JP2891905B2 - Clad material - Google Patents
Clad materialInfo
- Publication number
- JP2891905B2 JP2891905B2 JP7194224A JP19422495A JP2891905B2 JP 2891905 B2 JP2891905 B2 JP 2891905B2 JP 7194224 A JP7194224 A JP 7194224A JP 19422495 A JP19422495 A JP 19422495A JP 2891905 B2 JP2891905 B2 JP 2891905B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- resistant metal
- layer
- base metal
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims description 58
- 239000002184 metal Substances 0.000 claims description 118
- 229910052751 metal Inorganic materials 0.000 claims description 118
- 230000007797 corrosion Effects 0.000 claims description 70
- 238000005260 corrosion Methods 0.000 claims description 70
- 239000010953 base metal Substances 0.000 claims description 59
- 239000010410 layer Substances 0.000 claims description 59
- 239000011247 coating layer Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 31
- 238000005304 joining Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002360 explosive Substances 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- -1 containing any of b Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、Ｆｅ系のベース金
属に対し、耐食性金属被覆層がシーム溶接により接合さ
れたクラッド材に関する。The present invention relates to a clad material in which a corrosion-resistant metal coating layer is joined to a Fe-based base metal by seam welding.
【０００２】[0002]
【従来の技術】従来、Ｆｅ系のベース金属に、ＴｉやＺ
ｒ等の耐食性金属被覆層を接合する方法としては、ベー
ス金属板の表面に耐食性金属板を重ね合わせ、その上に
配置された火薬の爆発力を利用して両者を圧接する爆発
圧接法、互いに積層されたベース金属板と耐食性金属板
とを圧延ロールにより圧延して両者を接合する圧延法、
さらにはスポット溶接を利用する方法等、各種のものが
実施ないし提案されている。2. Description of the Related Art Conventionally, Ti and Z have been used as Fe-based base metals.
As a method for joining the corrosion-resistant metal coating layer such as r, the corrosion-resistant metal plate is superimposed on the surface of the base metal plate, and the explosive pressure welding method in which the two are pressed against each other by using the explosive force of the explosive disposed thereon, A rolling method in which the laminated base metal plate and corrosion-resistant metal plate are rolled by rolling rolls and joined together,
Further, various methods such as a method using spot welding have been implemented or proposed.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の方法におい
ては次のような問題点がある。 (1)爆発圧接法では、火薬の爆発に伴い騒音が発生する
ので、実施場所の制約を受けるケースが多い。また、製
造できるクラッド材の寸法や形状に制約が多く、製造コ
ストも割り高である欠点がある。さらに、薄板状のクラ
ッド材の製造には不向きであり、そのような薄板状のも
のを得るためには厚板を爆発圧接後、さらに圧延を施す
必要があるなど、工数が増大する難点がある。 (2)圧延法では、製造できるクラッド材が板状のものに
限られるほか、大掛かりな圧延設備が必要なので設備費
用が高くつく欠点がある。また、曲面を有するベース金
属に被覆を行うことができないなど、ベース金属の形状
に対する融通性に欠ける難点がある。さらに、圧延のみ
では爆発圧接法等に比べると接合力が不足しがちで、圧
延後の拡散熱処理が必要となる場合も多く、工数及びコ
ストが増大しやすい難点がある。 (3)スポット溶接を用いた方法では、散点状のスポット
溶接部を多数形成しなければならないため、接合に手間
がかかる。また、点接合であるため接合力が不足しやす
く、さらにはベース金属と耐食性金属被覆層との間のシ
ール性を得にくい難点がある。The above conventional method has the following problems. (1) In the explosive welding method, noise is generated due to explosive explosives, so there are many cases where the implementation place is restricted. In addition, there are many restrictions on the size and shape of the clad material that can be manufactured, and the manufacturing cost is relatively high. Furthermore, it is not suitable for the production of a thin plate-like clad material, and in order to obtain such a thin plate-like material, it is necessary to further roll after thick plate explosion welding, and there is a problem that the number of steps is increased. . (2) In the rolling method, the clad material that can be produced is limited to a plate-like material, and the large-scale rolling equipment is required, so that the equipment cost is high. In addition, there is a problem that the base metal having a curved surface cannot be coated, and thus lacks flexibility with respect to the shape of the base metal. Further, the rolling force alone tends to be insufficient in bonding strength as compared with the explosion pressure welding method or the like, and often requires diffusion heat treatment after rolling, which tends to increase man-hours and costs. (3) In the method using spot welding, since a large number of spot-like spot welds must be formed, it takes time to join. In addition, because of the point joining, the joining force tends to be insufficient, and further, it is difficult to obtain a sealing property between the base metal and the corrosion-resistant metal coating layer.
【０００４】本発明の課題は、シーム溶接を用いて簡便
に製造され、しかも接合強度に優れたクラッド材を提供
することにある。An object of the present invention is to provide a clad material which is easily manufactured by seam welding and has excellent joining strength.
【０００５】[0005]
【課題を解決するための手段、作用及び効果】本発明の
クラッド材は、上述の課題を解決するために下記のよう
に構成されることを特徴とする。すなわち、Ｆｅ又はＦ
ｅ合金で構成されるベース金属層に対し、Ｆｅを主成分
とする金属で形成された金属網が積層される。そして、
その金属網に対しベース金属層とは反対側において、金
属網と接して耐食性金属被覆層が配置され、それらベー
ス金属層、金属網及び耐食性金属被覆層が、ローラ電極
により線状もしくは面状に形成されたシーム溶接部によ
って結合される。耐食性金属被覆層はＴｉ、Ｚｒ、Ｎ
ｂ、Ｔａ、Ｎｉのいずれかを主成分とする金属、又はス
テンレス鋼により構成される。これにより、耐食性金属
被覆層とベース金属層とが強固に結合されたクラッド材
が実現される。なお、ベース金属層は、例えば炭素鋼、
ステンレス鋼、及びその他の合金鋼により構成すること
ができる。Means for Solving the Problems, Functions and Effects The clad material of the present invention is characterized in that it is configured as follows to solve the above-mentioned problems. That is, Fe or F
A metal net formed of a metal containing Fe as a main component is laminated on a base metal layer made of an e-alloy. And
On the opposite side of the metal net from the base metal layer, a corrosion-resistant metal coating layer is arranged in contact with the metal net, and the base metal layer, the metal net and the corrosion-resistant metal coating layer are linearly or planarly formed by the roller electrode. Joined by the formed seam weld. Corrosion resistant metal coating layer is made of Ti, Zr, N
It is made of a metal mainly containing any of b, Ta, and Ni, or stainless steel. Thereby, a clad material in which the corrosion-resistant metal coating layer and the base metal layer are firmly bonded is realized. The base metal layer is, for example, carbon steel,
It can be made of stainless steel and other alloy steels.
【０００６】上述の構成のクラッド材は、ベース金属層
に対し、金属網及び耐食性金属被覆層をこの順序で積層
し、その積層方向においてローラ電極により加圧力を加
えて通電することにより積層体を抵抗発熱させ、さらに
その状態でローラ電極を積層体に対し相対的に回転させ
てシーム溶接部を形成することにより製造することがで
きる。この場合、積層体を複数のローラ電極の間に挟み
付けて通電することができる。一方、ローラ電極により
積層体を挟まずにシーム溶接を行う方法、例えば耐食性
金属被覆層側にローラ電極を配置し、これに対応して別
のローラ電極を同じ側に配置するとともに、一方のロー
ラ電極側から少なくとも耐食性金属被覆層及び金属網を
貫き、その積層面に沿って横方向へ曲がった後、再び各
層を上記とは逆順に貫いて他方のローラ電極側へ抜ける
通電経路を形成して溶接を行う、いわゆるシリーズシー
ム溶接法等を用いることもできる。なお、通電電流は交
流電流及び直流電流のいずれを用いてもよい。金属網は
網目が形成されていることから通電断面積が小さいの
で、抵抗発熱はその近傍で特に大きくなる。そして高温
となった金属網は、ローラ電極による加圧力によって上
記発熱により軟化した耐食性金属被覆層又はベース金属
層の少なくとも一方へ食い込んで、耐食性金属被覆層と
ベース金属層との間の結合力が高められるものと推測さ
れる。In the clad material having the above-described structure, a metal net and a corrosion-resistant metal coating layer are laminated on the base metal layer in this order, and a pressing force is applied by a roller electrode in the laminating direction to energize the laminated body. It can be manufactured by generating heat by resistance and further rotating the roller electrode relative to the laminate in that state to form a seam weld. In this case, the laminate can be sandwiched between a plurality of roller electrodes to conduct electricity. On the other hand, a method of performing seam welding without sandwiching the laminated body between the roller electrodes, for example, disposing a roller electrode on the corrosion-resistant metal coating layer side, and correspondingly disposing another roller electrode on the same side, After passing through at least the corrosion-resistant metal coating layer and the metal net from the electrode side, and bending laterally along the lamination surface, again form an energizing path to pass through each layer in the reverse order to the above and to the other roller electrode side. A so-called series seam welding method for performing welding can also be used. Note that any of an alternating current and a direct current may be used as the energizing current. Since the metal net has a mesh, the current-carrying cross-sectional area is small, so that the resistance heat is particularly large near the metal net. Then, the high-temperature metal net penetrates into at least one of the corrosion-resistant metal coating layer or the base metal layer softened by the heat generated by the pressing force of the roller electrode, and the bonding force between the corrosion-resistant metal coating layer and the base metal layer is reduced. It is presumed that it can be enhanced.
【０００７】以上説明したベース金属層を含むクラッド
材は、例えば次のような機器ないし構造物に使用するこ
とができる。 ・蒸留塔、反応器、反応塔、反応槽、薬品貯留槽、攪拌
槽、高圧ガスタワー、ヘッドタンク、セパレータ等の各
種塔槽類の内面ライニング。 ・熱交換器の内面被覆。特に、管板部の被覆。 ・タンクローリーの内面被覆。 ・真空蒸発缶の内面被覆。The clad material including the base metal layer described above can be used, for example, in the following equipment or structure.・ Inner lining of various towers such as distillation towers, reactors, reaction towers, reaction tanks, chemical storage tanks, stirring tanks, high pressure gas towers, head tanks, and separators. -Inner coating of heat exchanger. In particular, coating of the tube sheet.・ Inner coating of tank truck.・ Inner coating of vacuum evaporator.
【０００８】[0008]
【発明の実施の形態】以下、本発明のいくつかの実施の
形態を図面を用いて説明する。図１は、本発明のクラッ
ド材の製造方法を模式的に示すものであって、（ａ）に
示すように、炭素鋼、ステンレス鋼等のＦｅ系材料で構
成されるベース金属層１の上に、ステンレス鋼等で形成
される金属網３及びＴｉ、Ｚｒ等で構成される耐食性金
属被覆層としての耐食性金属板材４をこの順序で積層す
る。続いて同図（ｂ）に示すように、それらの積層体５
をその積層方向において、２つのローラ電極６の間で挟
み付け、図示しない空圧機構等の荷重付与手段により加
圧力をかけながら、交流電源７によりそれらローラ電極
６を介して積層体５に通電する。これにより、その通電
部において積層体５が抵抗発熱し、その状態でローラ電
極６を積層体５に対し、その板面に沿う方向に相対回転
させることにより、図２に示すように、ベース金属層
１、金属網３及び耐食性金属板材４を互いに結合する線
状のシーム溶接部８が形成されて本発明のクラッド材１
０となる。ここで、シーム溶接部８は、積層体５の板面
方向に沿って所定の間隔で複数形成されている。なお、
ローラ電極６への通電は連続的に行っても、断続的に行
ってもいずれでもよい。なお、以下の図面において、金
属網３及び耐食性金属板材４の厚さは誇張して描いてい
る場合があり、実際のクラッド材における寸法とは必ず
しも対応していない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a method of manufacturing a clad material according to the present invention. As shown in FIG. 1 (a), an upper surface of a base metal layer 1 made of an Fe-based material such as carbon steel or stainless steel is shown. Next, a metal net 3 formed of stainless steel or the like and a corrosion-resistant metal plate 4 as a corrosion-resistant metal coating layer made of Ti, Zr, etc. are laminated in this order. Subsequently, as shown in FIG.
Is sandwiched between two roller electrodes 6 in the laminating direction, and while the pressing force is applied by a load applying means such as a pneumatic mechanism (not shown), the laminate 5 is energized by the AC power supply 7 via the roller electrodes 6. I do. As a result, the laminated body 5 generates resistance heat in the current-carrying part, and in this state, the roller electrode 6 is relatively rotated with respect to the laminated body 5 in a direction along the plate surface, thereby obtaining the base metal as shown in FIG. A linear seam weld 8 for connecting the layer 1, the metal net 3, and the corrosion-resistant metal plate 4 to each other is formed, and the clad material 1 of the present invention is formed.
It becomes 0. Here, a plurality of seam welds 8 are formed at predetermined intervals along the plate surface direction of the laminate 5. In addition,
The energization of the roller electrode 6 may be performed continuously or intermittently. In the following drawings, the thicknesses of the metal net 3 and the corrosion-resistant metal plate 4 may be exaggerated and do not always correspond to the actual dimensions of the clad material.
【０００９】一方、図１４に示すように、ローラ電極６
により積層体５を挟まずにシーム溶接を行う方法、例え
ばシリーズシーム溶接法を用いることもできる。すなわ
ち、耐食性金属板材４側にローラ電極６を配置し、これ
に対応して別のローラ電極６を同じ側に配置する。そし
てそれらローラ電極６に通電すると、一方のローラ電極
６側から少なくとも耐食性金属板材４及び金属網３を貫
き、その積層面に沿って横方向へ曲がった後、再び各層
を上記とは逆順に貫いて他方のローラ電極６側へ抜ける
通電経路Ｉが形成されて、シーム溶接部が形成される。On the other hand, as shown in FIG.
A method of performing seam welding without sandwiching the laminated body 5, for example, a series seam welding method can also be used. That is, the roller electrode 6 is arranged on the corrosion-resistant metal plate 4 side, and another roller electrode 6 is arranged on the same side correspondingly. When the roller electrodes 6 are energized, they penetrate at least the corrosion-resistant metal plate material 4 and the metal net 3 from one roller electrode 6 side, bend laterally along the laminated surface thereof, and again penetrate each layer in the reverse order to the above. Thus, an energization path I is formed to pass to the other roller electrode 6, and a seam weld is formed.
【００１０】図３及び図４は、図２に示すクラッド材１
０の推測される断面構造の模式図を示している（図３は
Ｂ−Ｂ断面、図４はＡ−Ａ断面）。金属網３は網目が形
成されていることから通電断面積が小さいので、抵抗発
熱はその近傍で特に大きくなる。この発熱により、ベー
ス金属層１に比べて軟化しやすいＴｉないしＺｒ等で構
成された耐食性金属板材４が適度に軟化し、ローラ電極
６の加圧力により金属網３が、その軟化した耐食性金属
板材４へ比較的大きく食い込むこととなる。また、ベー
ス金属層１と金属網３との接触部には通電による抵抗発
熱に基づく成分拡散層１３が形成され、両者がその接触
部において結合される。このように、金属網３を仲立ち
として、ベース金属層１と耐食性金属板材４とが接合さ
れるものと推測される。ここで、金属網３の網目におい
て、耐食性金属板材４とベース金属層１とが直接接触す
る部分にも若干の成分拡散層１１が生じる場合がある。
さらに金属網３の耐食性金属板材４への食込部の周辺に
も成分拡散層１２が生じうる。なお、図４に示すよう
に、積層体５の、シーム溶接部８が形成されない部分に
おいては、ベース金属層１、金属網３、及び耐食性金属
板材４同士の間に結合は生じない。FIGS. 3 and 4 show the clad material 1 shown in FIG.
FIG. 3 shows a schematic view of a cross-sectional structure assumed to be 0 (FIG. 3 is a BB cross section, and FIG. 4 is an AA cross section). Since the metal mesh 3 has a small cross section due to the formation of the mesh, the resistance heating is particularly large in the vicinity thereof. Due to this heat, the corrosion-resistant metal plate material 4 made of Ti or Zr or the like which is softer than the base metal layer 1 is appropriately softened, and the metal net 3 is softened by the pressing force of the roller electrode 6. 4 will be relatively large. A component diffusion layer 13 is formed at a contact portion between the base metal layer 1 and the metal net 3 based on resistance heat generated by energization, and the two are joined at the contact portion. In this way, it is presumed that the base metal layer 1 and the corrosion-resistant metal plate member 4 are joined together with the metal net 3 as a middle point. Here, in the mesh of the metal mesh 3, a slight component diffusion layer 11 may also be generated in a portion where the corrosion-resistant metal plate 4 and the base metal layer 1 are in direct contact.
Further, the component diffusion layer 12 may also be formed around the biting portion of the metal net 3 into the corrosion-resistant metal plate 4. As shown in FIG. 4, in the portion of the laminate 5 where the seam weld 8 is not formed, no connection occurs between the base metal layer 1, the metal net 3, and the corrosion-resistant metal plate 4.
【００１１】ここで、クラッド材１０全体における耐食
性金属板材４とベース金属層１との結合力は、シーム溶
接部８の形成本数、形成間隔及び形成幅を変更すること
により適宜調整することが可能である。また、シーム溶
接部８の幅は、ローラ電極６の幅を変更することにより
調整される。また、特に広幅のシーム溶接部８（あるい
は面状のシーム溶接部）が必要な場合は、隣接するシー
ム溶接部８が互いに接するようにないしは一部が重なる
ように形成すればよい。Here, the bonding strength between the corrosion-resistant metal plate 4 and the base metal layer 1 in the entire clad material 10 can be appropriately adjusted by changing the number, formation interval and width of the seam welds 8 to be formed. It is. Further, the width of the seam weld 8 is adjusted by changing the width of the roller electrode 6. In particular, when a wide seam weld 8 (or a planar seam weld) is required, the seam welds 8 may be formed so that adjacent seam welds 8 are in contact with each other or partially overlap.
【００１２】次に、耐食性金属板材４の材質及び厚さ
は、クラッド材が使用される環境に応じて設定される。
そして、金属網３を形成する線材の線径及び網目の開き
は、耐食性金属板材４の材質と厚さに応じて、ベース金
属層１との間で最適の接合力が得られるよう適宜設定さ
れる。そして、これに対応してシーム溶接の条件、すな
わち、溶接電流値、ローラ電極６による加圧力、溶接速
度（例えばローラ電極６の回転速度）、通電時間、休止
時間等が適宜設定されることとなる。例えば、溶接電流
の値は、抵抗発熱が極端に大きくなって金属網３が溶融
したり、逆に発熱が小さくなり過ぎて各層の接合状態が
不充分とならない範囲内で調整される。また、ローラ電
極６による加圧力は、金属網３が耐食性金属板材４（又
はベース金属層１）への圧入が過不足なく起こり、かつ
積層体５表面への電極ローラ６の極端な食込みが生じな
い範囲で調整される。Next, the material and thickness of the corrosion-resistant metal plate 4 are set according to the environment in which the clad material is used.
The wire diameter and mesh size of the wire material forming the metal mesh 3 are appropriately set according to the material and thickness of the corrosion-resistant metal plate material 4 so as to obtain an optimum joining force with the base metal layer 1. You. Correspondingly, the conditions for seam welding, that is, the welding current value, the pressing force by the roller electrode 6, the welding speed (for example, the rotation speed of the roller electrode 6), the energizing time, the pause time, and the like are appropriately set. Become. For example, the value of the welding current is adjusted within a range where the resistance heat generation becomes extremely large and the metal net 3 is melted, or conversely, the heat generation becomes too small and the bonding state of each layer becomes insufficient. In addition, the pressing force of the roller electrode 6 is such that the metal net 3 is pressed into the corrosion-resistant metal plate 4 (or the base metal layer 1) without excess or shortage, and the electrode roller 6 is extremely bite into the surface of the laminate 5. It is adjusted in the range that does not exist.
【００１３】例えば、ＴｉないしＺｒ系の耐食性金属板
材４と炭素鋼製のベース金属層１とを接合する場合、耐
食性金属板材４の厚さをＴ、金属網３を構成する線材の
線径をＭとすると、Ｍ／Ｔの値を0.1〜0.4の範囲で設定
するのがよい。Ｍ／Ｔが0.1未満となると金属網３の耐
食性金属板材４への食込みが不足して接合強度が低下す
る。また、0.4を越えると、逆に食込みが大きくなり過
ぎ、金属網３の網目が耐食性金属板材４の表面に浮き上
がって外観不良を起こしたり、網目が耐食性金属板材４
の表面側へ突き抜けてクラック等が生じたりして、ベー
ス金属層１に対する防食効果が損なわれることにもつな
がりうる。Ｍ／Ｔの値は、望ましくは0.15〜0.3とする
のがよい。For example, when joining a Ti or Zr-based corrosion-resistant metal plate 4 and a carbon steel base metal layer 1, the thickness of the corrosion-resistant metal plate 4 is T, and the wire diameter of the wire constituting the metal net 3 is T. When M is set, the value of M / T is preferably set in the range of 0.1 to 0.4. If the M / T is less than 0.1, the metal net 3 does not sufficiently penetrate into the corrosion-resistant metal plate 4 and the joining strength is reduced. On the other hand, if it exceeds 0.4, on the contrary, the penetration becomes too large, the mesh of the metal net 3 floats on the surface of the corrosion-resistant metal plate 4 and causes poor appearance, or the mesh becomes
Cracks or the like penetrating to the surface side of the base metal layer 1, which may lead to impairment of the anticorrosion effect on the base metal layer 1. The value of M / T is preferably set to 0.15 to 0.3.
【００１４】一方、網目の間隔（隣接する線材の内側同
士、すなわち空隙の間隔とする）をＤとした場合、Ｄ／
Ｍは1〜10の範囲で設定するのがよい。Ｄ／Ｍが1未満と
なると、網目の間隔が小さくなり過ぎて金属網３の食込
み深さが不足し、接合強度が低下する。一方、Ｄ／Ｍが
10を越えると耐食性金属板材４に食い込む金属網３の線
材の間隔がまばらになって、接合効果の低下につなが
る。Ｄ／Ｍの値は、望ましくは1.5〜7とするのがよい。On the other hand, if the distance between the meshes (the distance between the insides of adjacent wires, that is, the distance between voids) is D, then D / D
M is preferably set in the range of 1 to 10. When D / M is less than 1, the mesh interval becomes too small, the biting depth of the metal net 3 becomes insufficient, and the joining strength decreases. On the other hand, D / M
If it exceeds 10, the interval between the wires of the metal net 3 that bites into the corrosion-resistant metal plate 4 becomes sparse, and the joining effect is reduced. The value of D / M is preferably set to 1.5 to 7.
【００１５】次に、金属網３を使用して、厚さが特に大
きい耐食性金属板材４をベース金属層１と接合する場
合、シーム溶接に必要な電流密度を確保するためには、
耐食性金属板材４の厚さに合わせて溶接電流を高くする
か又は通電時間を長くする必要が生ずる。ところが、金
属網３は耐食性金属板材４との接触面積が小さく電気比
抵抗が高いことから、溶接電流の増大に伴い、金属網３
近傍において過剰な発熱が生じやすくなる。その結果、
図５（ａ）に示すように、耐食性金属板材４が軟化し過
ぎて金属網３が耐食性金属板材４中に完全に埋没してし
まい、金属網３の食込みによる接合効果が損なわれる場
合がある。このような場合、（ｂ）に示すように、２な
いしそれ以上の枚数の金属網３を重ねて使用すれば、上
記のような埋没が生じても、それら複数の金属網３の一
部のものがベース金属層１と耐食性金属板材４との間に
またがって存在することで、所定の結合力を確保するこ
とができるようになる。Next, when the corrosion-resistant metal plate 4 having a particularly large thickness is joined to the base metal layer 1 using the metal net 3, in order to secure a current density required for seam welding,
In accordance with the thickness of the corrosion-resistant metal sheet material 4, it is necessary to increase the welding current or lengthen the energization time. However, since the metal mesh 3 has a small contact area with the corrosion-resistant metal plate 4 and a high electric resistivity, the metal mesh 3 increases with an increase in welding current.
Excessive heat is likely to be generated in the vicinity. as a result,
As shown in FIG. 5A, the corrosion-resistant metal plate 4 is excessively softened, and the metal net 3 is completely buried in the corrosion-resistant metal plate 4, and the joining effect due to the penetration of the metal net 3 may be impaired. . In such a case, as shown in (b), if two or more metal nets 3 are used in an overlapping manner, even if the above-mentioned burial occurs, a part of the plurality of metal nets 3 may be used. Since the object is present between the base metal layer 1 and the corrosion-resistant metal plate 4, a predetermined bonding force can be secured.
【００１６】以下、上記クラッド材の使用例について説
明する。図６は、ベース金属層１を円筒状に形成したク
ラッド材１０の例を示している。この場合、耐食性金属
板材４は円筒内面（もしくは外面：この場合は図６にお
いて、ベース金属層１と耐食性金属板材４との位置関係
が反転する）を覆うように配置されるとともに、シーム
溶接部８は、（ａ）に示すように円筒の周方向に沿うも
のを複数本、円筒の軸方向に沿って所定の間隔で形成し
たり、（ｂ）に示すように螺旋状に形成したり、さらに
は（ｃ）に示すように円筒の軸方向に沿う直線状のもの
を複数本、円筒の周方向に沿って所定の間隔で形成する
ことができる。このような形状のものは、例えば、塔槽
類や熱交換器の胴部、あるいはパイプ内面又は外面に耐
食性金属被覆を施す場合等に適用できる。Hereinafter, examples of use of the clad material will be described. FIG. 6 shows an example of the clad material 10 in which the base metal layer 1 is formed in a cylindrical shape. In this case, the corrosion-resistant metal plate 4 is disposed so as to cover the inner surface of the cylinder (or the outer surface; in this case, the positional relationship between the base metal layer 1 and the corrosion-resistant metal plate 4 is reversed in FIG. 6), and the seam welding portion is provided. 8 is formed by a plurality of pieces along the circumferential direction of the cylinder as shown in (a) at predetermined intervals along the axial direction of the cylinder, or formed in a spiral shape as shown in (b), Furthermore, as shown in (c), a plurality of linear members along the axial direction of the cylinder can be formed at predetermined intervals along the circumferential direction of the cylinder. Such a shape can be applied, for example, to a case where a corrosion-resistant metal coating is applied to the body of a tower or a heat exchanger, or the inner or outer surface of a pipe.
【００１７】図７は、ベース金属層１が中空円錐状ない
し円錐台状に形成された例を示しており、耐食性金属板
材４はその内面側に配置される。そして、シーム溶接部
８は、（ａ）に示すようにその周方向に沿って形成した
り、あるいは（ｂ）に示すようにその母線に沿う方向に
形成することができる。このような形状のものは、例え
ば塔槽類上部ないし下部の縮径部分に適用することがで
きる。FIG. 7 shows an example in which the base metal layer 1 is formed in the shape of a hollow cone or a truncated cone, and the corrosion-resistant metal plate 4 is disposed on the inner surface side. The seam weld 8 can be formed along the circumferential direction as shown in (a) or in the direction along the generatrix as shown in (b). Such a shape can be applied, for example, to a reduced diameter portion in the upper or lower part of the tower tanks.
【００１８】図８に示すベース金属層１は、円形の平面
形状を有し、その中央部が凸曲面状に膨出する蓋状に形
成されて、その内面側（凹部側）が耐食性金属板材４で
覆われている。このような形状のものは、例えば塔槽類
や熱交換器等の鏡板に適用することが可能である。図９
は、シーム溶接部８の形成パターンの例を示しており、
（ａ）、（ｂ）は同心円状に形成した例を、（ｃ）、
（ｄ）は放射状に形成した例を、さらに（ｅ）は同心円
状のものと放射状のものとを組み合わせた例を、（ｆ）
は直径方向に延びる直線状のものを所定の間隔で形成し
た例をそれぞれ示している。The base metal layer 1 shown in FIG. 8 has a circular planar shape, the center of which is formed in a lid shape protruding in a convex curved shape, and the inner surface side (recess side) of which is a corrosion-resistant metal plate material. 4 is covered. Those having such a shape can be applied to, for example, end plates such as towers and tanks and heat exchangers. FIG.
Shows an example of the formation pattern of the seam welded portion 8,
(A) and (b) are examples formed concentrically, (c),
(D) shows an example formed radially, (e) shows an example combining a concentric shape and a radial shape, (f)
Indicates an example in which linear objects extending in the diameter direction are formed at predetermined intervals.
【００１９】ここで、本耐食性金属板材４は、予め複数
部分に分割されたものを溶接（例えばＴＩＧ溶接）等で
接合することにより形成してもよい。図９（ｇ）は、耐
食性金属板材４を放射状に分割して形成した例を示して
おり、その放射状の突き合わせ部が継ぎ目溶接部９によ
り接合されて一体化され、シーム溶接部８によりベース
金属層１と接合される。なお、シーム溶接部８は、継ぎ
目溶接部９を避けつつ同心円状に形成されている。一
方、（ｅ）及び（ｈ）に示す例においては、耐食性金属
板材４は円形の分割面により、円形の内側部４ａとドー
ナツ状の外側部４ｂとに分割されており、外側部４ｂは
さらに放射状に分割され、それら各々の突き合わせ部が
継ぎ目溶接部９により接合される。なお、ベース金属層
１は、耐食性金属板材４の内側部４ａに対応する内側部
分と、それ以外の部分（外側部分）とに分割して形成す
ることが可能である。この場合、その分割された内側部
分及び外側部分に対し、予め別々に耐食性金属板材４を
シーム溶接部８により接合しておき、その後それら内側
部分及び外側部分のベース金属層１同士及び耐食性金属
板材４同士を溶接等で接合するようにしてもよい。Here, the present corrosion-resistant metal sheet material 4 may be formed by joining in advance what has been divided into a plurality of portions by welding (for example, TIG welding). FIG. 9 (g) shows an example in which the corrosion-resistant metal plate material 4 is radially divided and formed, and the radial butted portions are joined and integrated by a seam weld 9, and the base metal is welded by a seam weld 8. Joined with layer 1. The seam weld 8 is formed concentrically while avoiding the seam weld 9. On the other hand, in the examples shown in (e) and (h), the corrosion-resistant metal plate 4 is divided into a circular inner part 4a and a donut-shaped outer part 4b by a circular division surface, and the outer part 4b is further divided. They are divided radially and their butted portions are joined by seam welds 9. The base metal layer 1 can be formed by being divided into an inner portion corresponding to the inner portion 4a of the corrosion-resistant metal plate member 4 and another portion (outer portion). In this case, the corrosion-resistant metal plate material 4 is separately joined to the divided inner portion and the outer portion in advance by a seam welded portion 8, and then the base metal layers 1 of the inner portion and the outer portion and the corrosion-resistant metal plate material The four may be joined by welding or the like.
【００２０】図１０は、ベース金属層１が方形板状に形
成されたクラッド材の例を示しており、（ａ）はクラッ
ド材１０の一辺に沿う方向に延びるシーム溶接部８が複
数本、それと交差する方向に所定の間隔で並んで形成さ
れた例を、（ｂ）はその並んで配置されたシーム溶接部
８の両端部側に、それと交差する方向に延びるシーム溶
接部８を配置した例を、（ｃ）は板の中央から放射状に
延びるシーム溶接部８を形成した例をそれぞれ示してい
る。また、図１１に示すように、ベース金属層１の板面
に突起部１０ｂが形成されている場合には、その突起部
１０ｂを避けつつシーム溶接部８を形成することも可能
である。FIG. 10 shows an example of a clad material in which the base metal layer 1 is formed in a rectangular plate shape. FIG. 10A shows a plurality of seam welds 8 extending in a direction along one side of the clad material 10. (B) shows an example in which the seam welds 8 extending in the direction intersecting with the seam welds 8 arranged side by side are arranged at both end sides of the seam welds 8 arranged side by side. (C) shows an example in which a seam weld 8 extending radially from the center of the plate is formed. In addition, as shown in FIG. 11, when the projection 10b is formed on the plate surface of the base metal layer 1, the seam weld 8 can be formed while avoiding the projection 10b.
【００２１】図１２は、厚板状に形成されたベース金属
層１の板面に浅い凹所１ａを形成し、対応する形状の耐
食性金属板材４をそこに嵌め込むとともに、その耐食性
金属板材４の縁部にのみシーム溶接部８を形成した例を
示している。また、図１３は、クラッド材１０を熱交換
器の管板７１に適用した例を示している。その製造方法
であるが、まず予めベース金属層１及び耐食性金属板材
４に多数の貫通孔４０ａを形成し、その耐食性金属板材
４をベース金属層１の上面に重ね合わせ、その重なり部
においてシーム溶接部８を形成する。次に、そのベース
金属層１を円筒状の胴体部５０と溶接により一体化す
る。そして、ベース金属層１の各貫通孔４０ａに管材４
０を挿入し、それらの端面同士を一致させた状態で管材
４０の周縁部と耐食性金属板材４とを固着・溶接する。FIG. 12 shows a case where a shallow recess 1a is formed in the plate surface of a base metal layer 1 formed in a thick plate shape, and a corrosion-resistant metal plate material 4 of a corresponding shape is fitted therein, and the corrosion-resistant metal plate material 4 is formed. 2 shows an example in which the seam welded portion 8 is formed only at the edge. FIG. 13 shows an example in which the clad material 10 is applied to a tube sheet 71 of a heat exchanger. In the manufacturing method, first, a large number of through holes 40a are formed in the base metal layer 1 and the corrosion-resistant metal plate 4 in advance, the corrosion-resistant metal plate 4 is overlapped on the upper surface of the base metal layer 1, and seam welding is performed at the overlapping portion. The part 8 is formed. Next, the base metal layer 1 is integrated with the cylindrical body 50 by welding. Then, the pipe material 4 is inserted into each through hole 40a of the base metal layer 1.
0, and the periphery of the pipe member 40 and the corrosion-resistant metal plate member 4 are fixed and welded together with their end faces aligned.
【００２２】[0022]
（実施例）縦50cm、横50cm、厚さ12mmの板状に形成した
ベース金属層上に、それと同面積のステンレス鋼網（線
径：0.1〜0.5mm、網目間隔：16〜100mesh）、及び耐食
性金属板材（厚さ0.5〜1.5mm）を積層し、図１に示す方
法により、ベース金属層の長手方向に沿うシーム溶接部
を25mm間隔で形成してクラッド材とした（表１、試料番
号１〜９）。一方、金属網を使用せず、耐食性金属板材
とベース金属層とを直接重ね合わせてシーム溶接を施し
た試料（表１、試料番号１０〜１５）も合わせて作製し
た。(Example) On a base metal layer formed in a plate shape having a length of 50 cm, a width of 50 cm, and a thickness of 12 mm, a stainless steel net (wire diameter: 0.1 to 0.5 mm, mesh interval: 16 to 100 mesh) having the same area as the base metal layer, and A corrosion-resistant metal plate material (thickness: 0.5 to 1.5 mm) was laminated, and a seam weld along the longitudinal direction of the base metal layer was formed at intervals of 25 mm by the method shown in FIG. 1 to obtain a clad material (Table 1, sample number). 1-9). On the other hand, a sample (Table 1, Sample Nos. 10 to 15) in which the corrosion-resistant metal plate material and the base metal layer were directly overlapped and subjected to seam welding without using a metal net was also prepared.
【００２３】各部に使用した材質は下記の通りである。 ・ベース金属層：炭素鋼（SS400）、ステンレス鋼（SUS
304、SUS316）。 ・耐食性金属板材：Ｔｉ、Ｚｒ、Ｎｂ、Ｔａ、Ｔｉ−Ｐ
ｄ合金（Ｐｄ：0.15wt%、残部Ｔｉ、wt%は重量％を示
す）、ステンレス鋼（SUS304）。 ・金属網：ステンレス鋼（SUS304）、炭素鋼（SS40
0）。The materials used for each part are as follows.・ Base metal layer: Carbon steel (SS400), stainless steel (SUS
304, SUS316).・ Corrosion-resistant metal plate material: Ti, Zr, Nb, Ta, Ti-P
d alloy (Pd: 0.15 wt%, balance Ti, wt% indicates wt%), stainless steel (SUS304).・ Metal net: Stainless steel (SUS304), carbon steel (SS40)
0).
【００２４】また、シーム溶接の条件は下記の範囲で調
整した： ・溶接電流：5000〜25000Ａ ・通電時間：5〜50サイクル ・休止時間：5〜50サイクル ・加圧力：500〜1500kg ・電極幅：5〜20mm ・溶接速度：500〜1500mm/分。 そして、得られたクラッド材に対し、曲げ試験（内側曲
げ半径：クラッド材の厚さの２倍、曲げ角度：180°）
を行い、耐食性金属板材とベース金属層との間の剥がれ
発生の有無に基づいて接合状態の良否の判定を行った。
結果を表１に示す。The conditions for seam welding were adjusted in the following ranges: welding current: 5000-25000 A; energizing time: 5-50 cycles; rest time: 5-50 cycles; pressing force: 500-1500 kg; : 5 ~ 20mm ・ Welding speed: 500 ~ 1500mm / min. Then, a bending test is performed on the obtained clad material (inner bending radius: twice the thickness of the clad material, bending angle: 180 °).
Was performed, and the quality of the joined state was determined based on whether or not peeling occurred between the corrosion-resistant metal plate material and the base metal layer.
Table 1 shows the results.
【００２５】[0025]
【表１】 [Table 1]
【００２６】本発明のクラッド材はいずれも良好な接合
状態を示したのに対し、比較例のクラッド材はいずれも
剥がれが発生していることがわかる。It can be seen that the clad materials of the present invention all exhibited a good bonding state, whereas the clad materials of the comparative examples all showed peeling.
【図１】本発明のクラッド材の製造方法を概念的に示す
図。FIG. 1 is a view conceptually showing a method for manufacturing a clad material of the present invention.
【図２】本発明のクラッド材のシーム溶接部の形成工程
を示す斜視図。FIG. 2 is a perspective view showing a step of forming a seam weld of the clad material of the present invention.
【図３】図２のＢ−Ｂ断面図。FIG. 3 is a sectional view taken along line BB of FIG. 2;
【図４】同じくＡ−Ａ断面図。FIG. 4 is a sectional view taken along the line AA of FIG.
【図５】金属網１枚のみ使用した場合と、２枚の金属網
を使用した場合の効果の違いを説明する模式図。FIG. 5 is a schematic diagram illustrating a difference between an effect when only one metal net is used and an effect when two metal nets are used.
【図６】ベース金属層を円筒状に形成した例を示す斜視
図。FIG. 6 is a perspective view showing an example in which a base metal layer is formed in a cylindrical shape.
【図７】同じく円錐状に形成した例を示す斜視図。FIG. 7 is a perspective view showing an example of forming the same conical shape.
【図８】同じく偏平蓋状に形成した例を示す斜視図。FIG. 8 is a perspective view showing an example in which it is similarly formed in a flat lid shape.
【図９】そのシーム溶接部の形成パターンを示す模式
図。FIG. 9 is a schematic diagram showing a formation pattern of the seam weld.
【図１０】ベース金属層を方形板状に形成した例を示す
模式図。FIG. 10 is a schematic view showing an example in which a base metal layer is formed in a rectangular plate shape.
【図１１】板面上に形成された突起部を避けつつシーム
溶接部を形成した例を示す平面及び側面図。11A and 11B are a plan view and a side view showing an example in which a seam weld is formed while avoiding a projection formed on a plate surface.
【図１２】耐食性金属板材の縁部にのみシーム溶接部を
形成した例を示す平面及び側面図。FIG. 12 is a plan view and a side view showing an example in which a seam weld is formed only at the edge of a corrosion-resistant metal plate material.
【図１３】耐食性金属板材の板面に多数の管材を接合し
た例を示す平面及び側面図。FIG. 13 is a plan view and a side view showing an example in which a large number of pipes are joined to a plate surface of a corrosion-resistant metal plate.
【図１４】シリーズシーム溶接法によりシーム溶接部を
形成する方法を示す説明図。FIG. 14 is an explanatory view showing a method of forming a seam weld by a series seam welding method.
１ ベース金属層 ３ 金属網 ４ 耐食性金属板材（耐食性金属被覆層） ６ ローラ電極 ８ シーム溶接部 １０ クラッド材 DESCRIPTION OF SYMBOLS 1 Base metal layer 3 Metal net 4 Corrosion-resistant metal plate material (corrosion-resistant metal coating layer) 6 Roller electrode 8 Seam welded part 10 Cladding material
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２３Ｋ 20/00 ３６０ Ｂ２３Ｋ 20/00 ３６０Ｄ ３６０Ｅ 20/16 20/16 (58)調査した分野(Int.Cl.6，ＤＢ名) B32B 15/01 B23K 11/06 320 B23K 20/00 360 B23K 20/16 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 6 identification code FI B23K 20/00 360 B23K 20/00 360D 360E 20/16 20/16 (58) Investigated field (Int.Cl. 6 , DB name ) B32B 15/01 B23K 11/06 320 B23K 20/00 360 B23K 20/16
Claims (4)
属層と、 そのベース金属層に積層され、かつＦｅを主成分とする
金属により構成される金属網と、 前記ベース金属層とは反対側から前記金属網に積層さ
れ、Ｔｉ、Ｚｒ、Ｎｂ、Ｔａ、Ｎｉのいずれかを主成分
とする金属、又はステンレス鋼により構成される耐食性
金属被覆層と、 ローラ電極により線状もしくは面状に形成され、それら
ベース金属層、金属網及び耐食性金属被覆層を互いに結
合するシーム溶接部とを含み、 前記金属網の網目の間隔をＤ、前記金属網を構成する線
材の線径をＭとして、Ｄ／Ｍが1〜10の範囲で設定され
るとともに、前記シーム溶接部において、前記金属網が
前記耐食性金属被覆層及び前記ベース金属層の少なくと
も一方へ食い込んでいる ことを特徴とするクラッド材。1. A base metal layer made of Fe or an Fe alloy, a metal net laminated on the base metal layer and made of a metal containing Fe as a main component, and an opposite side to the base metal layer And a corrosion-resistant metal coating layer composed of a metal mainly composed of one of Ti, Zr, Nb, Ta, and Ni, or stainless steel, and formed linearly or planarly by roller electrodes. is, they base metal layer, and a seam weld that binds together the metal mesh and corrosion resistant metal coating layer, the spacing of the mesh of the metal net D, lines constituting the metal net
D / M is set in the range of 1 to 10, where M is the wire diameter of the material.
At the seam weld,
At least the corrosion-resistant metal coating layer and the base metal layer
Clad material that also cuts into one side .
網を構成する線材の線径をＭとして、Ｍ／Ｔの値が0.1Assuming that the wire diameter of the wire constituting the net is M, the value of M / T is 0.1
〜0.4の範囲で設定されている請求項１記載のクラッド2. The cladding according to claim 1, wherein the cladding is set within a range of 0.4 to 0.4.
材。Wood.
合金である請求項１又は２に記載のクラッド材。3. The corrosion-resistant metal coating layer is made of Ti or Ti.
3. The clad material according to claim 1, which is an alloy.
合金である請求項１又は２に記載のクラッド材。4. The corrosion-resistant metal coating layer is made of Zr or Zr.
3. The clad material according to claim 1, which is an alloy.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7194224A JP2891905B2 (en) | 1995-07-06 | 1995-07-06 | Clad material |
| TW084108646A TW340078B (en) | 1995-07-06 | 1995-08-18 | Process of manufacturing rion-copper substrate coating welding containing metal-mesh intermediate layers |
| GB9611223A GB2302901B (en) | 1995-07-06 | 1996-05-30 | Cladding material |
| US08/658,122 US5874178A (en) | 1995-07-06 | 1996-06-04 | Cladding material |
| FI962410A FI120868B (en) | 1995-07-06 | 1996-06-11 | Metalliverhousmateriaali |
| NL1003419A NL1003419C2 (en) | 1995-07-06 | 1996-06-25 | Upholstery material. |
| DE19626603A DE19626603B4 (en) | 1995-07-06 | 1996-07-02 | Clad material or layered composite |
| CN96107025A CN1088648C (en) | 1995-07-06 | 1996-07-05 | Coating material |
| CNB02108761XA CN1182937C (en) | 1995-07-06 | 1996-07-05 | Coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7194224A JP2891905B2 (en) | 1995-07-06 | 1995-07-06 | Clad material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0919986A JPH0919986A (en) | 1997-01-21 |
| JP2891905B2 true JP2891905B2 (en) | 1999-05-17 |
Family
ID=16321032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7194224A Expired - Lifetime JP2891905B2 (en) | 1995-07-06 | 1995-07-06 | Clad material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2891905B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188524A (en) * | 2018-01-16 | 2018-06-22 | 向海星 | A kind of steel stainless steel composite plate plate type radiator |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100406361B1 (en) * | 1998-10-28 | 2003-12-18 | 주식회사 포스코 | Apparatus for cladding material and a method of manufacturing cladding material by using |
| US7588664B2 (en) * | 2005-07-27 | 2009-09-15 | Chicago Bridge & Iron Company | Oil distillation vacuum column with thickened plate in the vapor horn section |
| WO2019069368A1 (en) * | 2017-10-03 | 2019-04-11 | 株式会社昭和テックス | Method for joining metal materials and metal mesh sheet joining material used therein |
-
1995
- 1995-07-06 JP JP7194224A patent/JP2891905B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188524A (en) * | 2018-01-16 | 2018-06-22 | 向海星 | A kind of steel stainless steel composite plate plate type radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0919986A (en) | 1997-01-21 |
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