JPS5823838B2 - Flux for arc welding rods - Google Patents
Flux for arc welding rodsInfo
- Publication number
- JPS5823838B2 JPS5823838B2 JP932780A JP932780A JPS5823838B2 JP S5823838 B2 JPS5823838 B2 JP S5823838B2 JP 932780 A JP932780 A JP 932780A JP 932780 A JP932780 A JP 932780A JP S5823838 B2 JPS5823838 B2 JP S5823838B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- flux
- welding
- arc welding
- welding rods
- 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
Links
- 238000003466 welding Methods 0.000 title claims description 41
- 230000004907 flux Effects 0.000 title claims description 29
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims 1
- 238000005275 alloying Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- 239000010953 base metal Substances 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001295 No alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Description
【発明の詳細な説明】
本発明は表面硬化用被覆アーク溶接棒の被覆剤として使
用するアーク溶接棒用フラックスの配合に関し、特に軟
鋼の耐摩耗性溶接肉盛りに適したアーク溶接棒用フラッ
クスを提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the formulation of a flux for arc welding rods used as a coating agent for coated arc welding rods for surface hardening. This is what we provide.
スクリューコンベアーのスクリュー羽根、インペラーブ
レーカ−のインペラ或いは誘引ファンの翼等に於いては
処理対象物であるセメントクリンカ−１鉱滓、土砂及び
これらのダクト等の接触による摩耗が著るしく、摩耗の
激しい部分には、その対策として表面に耐摩耗性の肉盛
溶接が行なわれてきた。The screw blades of the screw conveyor, the impeller of the impeller breaker, the blades of the induction fan, etc. are subject to significant wear due to contact with the objects to be treated, such as cement clinker 1 slag, earth and sand, and these ducts. As a countermeasure to this problem, wear-resistant overlay welding has been applied to the surface of the parts.
この溶接には硬度の大きい溶着金属を生ずるような溶接
棒を用いて母材の上に肉盛溶接するものである。This welding involves overlay welding on the base metal using a welding rod that produces a hard deposited metal.
従来このような摩耗防止のための硬化肉盛溶接のために
は、フラックス中の合金成分としてＷの重量割合が７０
〜８０％程度となるＷ系溶接棒を使うことが多々あった
。Conventionally, for such hardfacing welding to prevent wear, the weight ratio of W as an alloy component in the flux was set at 70%.
W-based welding rods with a content of ~80% were often used.
しかしこの場合には肉盛溶接面の耐摩耗性は良好である
がフラックス中のＷ含有量が太きいため非常に単価が高
く、更に溶接時Ｗは母材に溶は込んで稀釈され充分な耐
摩耗性能を得るために二層、三層の肉盛を必要とし、非
常に高価であった。However, in this case, although the wear resistance of the overlay welding surface is good, the unit cost is very high because the W content in the flux is large, and furthermore, during welding, W is melted into the base metal and diluted, making it difficult to maintain sufficient wear resistance. In order to obtain wear resistance, two or three layers of overlay were required, which was very expensive.
本発明は従来品のこのような欠点を改善し、母材への溶
込みが少なく一層溶接で充分な耐摩耗性能を発揮でき、
しかも安価な表面硬化用被覆アーク溶接棒用フラックス
を提供するものである。The present invention improves these drawbacks of conventional products, has less penetration into the base metal, and can exhibit sufficient wear resistance performance during welding.
Furthermore, the present invention provides an inexpensive flux for surface hardening coated arc welding rods.
本発明者等は種々の合金成分の組合せを研究した結果、
上記従来のＷ系の溶接棒はＷＣ（タングステンカーバイ
ド）による硬度アップ効果を狙ったものであることから
、Ｗの使用をやめて、Ｃ，Ｓｉ。As a result of research into various alloy component combinations, the present inventors found that
Since the conventional W-based welding rods mentioned above aim to increase the hardness of WC (tungsten carbide), they have been replaced with C and Si instead of W.
Ｏｒ、Ｖ、Ｂ、Ｍｎを適量組合せることにより、必要硬
度を得ることが出来て、セメントクリンカ−１鉱滓、砂
等に対し耐摩耗性が高く且母材と溶込み合った稀釈肉盛
部の少ない安価なアーク溶接棒用フラックスを得ること
が出来た。By combining appropriate amounts of Or, V, B, and Mn, the required hardness can be obtained, and the dilution build-up part has high wear resistance against cement clinker-1 slag, sand, etc., and is fused into the base material. We were able to obtain a small amount of inexpensive flux for arc welding rods.
即ち本発明によればフラックス中の成分が重量受テ、
ＣＩｏ、０〜２２．５
Ｃｒ ３．０〜１７．０
Ｓｉ ６．０〜１７．５
Ｂ Ｏ３１〜 ２．０
■ １．０〜 ５．０
Ｍｎ ２．０〜８、Ｏ
Ｆｅ １２．０〜２３．０ （鉄合金中の鉄）とな
るように配合し、残部がスラッグ生成剤とからなること
を特徴とする表面硬化用被覆アーク溶接棒用のフラック
スが提供される。That is, according to the present invention, the components in the flux are as follows: CIo, 0-22.5 Cr 3.0-17.0 Si 6.0-17.5 B O31-2.0 ■ 1.0-5 .0 Mn 2.0-8, O Fe 12.0-23.0 (iron in iron alloy), and the remainder is a slag forming agent. Flux for welding rods is provided.
なお本発明においては、Ｃは黒鉛、カーボランダムまた
は鉄合金中の成分として、Ｓｉは鉄合金又はカーボラン
ダムとして、Ｃ！ｒ 、Ｂ 、 Ｖ、Ｍｎはいずれも鉄
合金として添加することができる。In the present invention, C is a component in graphite, carborundum, or iron alloy, Si is an iron alloy or carborundum, and C! r, B, V, and Mn can all be added as an iron alloy.
しかして溶着金属の化学成分中量も重要なものはＳｉと
Ｃであるが、Ｓｉのフラックス中の配合は６．０〜１７
．５重量％、好ましくは７．０〜１０．０重量％であり
、またＣのフラックス中の配合は１０．０〜２２．５重
量％、好ましくは１１．０〜１５．０重量％である。However, the important chemical components of the weld metal are Si and C, but the proportion of Si in the flux is 6.0 to 17.
．． The content of C in the flux is 10.0 to 22.5% by weight, preferably 11.0 to 15.0% by weight.
これはＳｉのフラックス中の割合が６．０重量％以下、
Ｃのフラックス中の割合が１０．０重量係以下になると
、Ｓｉの溶着金属中の割合が１．０重量係以下、Ｃの溶
着金属中の割合が１．５重量％以下となり、充分な炭化
物合金が生じないため硬度が得られず、母材との溶込み
が深くない拡散稀釈部が多くできてしまうからである。This means that the proportion of Si in the flux is 6.0% by weight or less,
When the proportion of C in the flux becomes 10.0% by weight or less, the proportion of Si in the weld metal becomes 1.0% by weight or less, the proportion of C in the welded metal becomes 1.5% by weight or less, and sufficient carbide is formed. This is because no alloy is formed, so hardness cannot be obtained, and many diffusion dilution areas are created that do not penetrate deeply into the base metal.
また、Ｓｉのフラックス中の割合が１７．５重量％以上
、Ｃのフラックス中の割合が２２，５重量％以上になる
と、Ｓｌの溶着金属中の割合が３．０重量％以上、Ｃの
溶着金属中の割合が４．２重量％以上となり、溶着金属
に気孔が多く発生し、又稀釈部はほとんどできないが、
硬度が低下してしまう。In addition, if the proportion of Si in the flux is 17.5% by weight or more and the proportion of C in the flux is 22.5% by weight or more, the proportion of Sl in the weld metal is 3.0% by weight or more, If the proportion in the metal is 4.2% by weight or more, many pores will occur in the welded metal, and there will be almost no dilution area.
Hardness decreases.
Ｂはフランクス中０．１〜２．０重量％（溶着金属中０
．１〜０．８重量％）、好ましくはフラックス中０．２
〜１．５重量％の範囲で必要な硬度が得られると共に溶
着金属部分の亀裂発生を防止することができる。B is 0.1 to 2.0% by weight in Franks (0% in weld metal)
．． 1-0.8% by weight), preferably 0.2% in flux
In the range of ~1.5% by weight, the necessary hardness can be obtained and cracking in the welded metal portion can be prevented.
Ｏｒ、Ｍｎ、Ｖは主として耐摩耗性を与える効果があり
、フラックス中Ｏｒは３．０〜１７．０重量％（溶着金
属中３．０〜１１．０重量％）、好ましくはフラックス
中５．０〜１４．０重量楚の範囲で必要な硬度が得られ
、フラックス中Ｍｎは２．０〜８．０重量％（溶着金属
中０．３〜４．０重量％）、好ましくはフラックス中２
．０〜７．０重量％の範囲で溶着金属の脱酸不足の防止
及び必要硬度の維持が得られ、またフラックス中Ｖは１
．０〜５．０重量％（溶着金属中０５〜２．０重量％）
、好ましくはフランクス中１．１〜４．０重量楚の範囲
で溶着金属の硬度を得ることが出来る。Or, Mn, and V mainly have the effect of imparting wear resistance, and Or in the flux is 3.0 to 17.0% by weight (3.0 to 11.0% by weight in the weld metal), preferably 5.0 to 17.0% by weight in the flux. The required hardness is obtained in the range of 0 to 14.0% by weight, and Mn in the flux is 2.0 to 8.0% by weight (0.3 to 4.0% by weight in the weld metal), preferably 2% in the flux.
．． In the range of 0 to 7.0% by weight, insufficient deoxidation of the weld metal can be prevented and the required hardness can be maintained, and V in the flux is 1.
．． 0 to 5.0% by weight (05 to 2.0% by weight in weld metal)
The hardness of the weld metal can preferably be obtained in the range of 1.1 to 4.0 kg by weight in Franks.
上記の通り構成された本発明のアーク溶接棒用フラック
スを用いた場合には従来品に比してＷの含有量が皆無に
も拘らず溶着金属中に硬度の高い炭化物合金が点在含有
され、従って耐摩耗性が犬であり、又Ｓｉ、Ｃの含有量
が多いために母材との溶込みが浅く稀釈部が出来にくい
という効果がある。When using the flux for arc welding rods of the present invention configured as described above, even though the content of W is completely absent compared to conventional products, carbide alloys with high hardness are scattered in the deposited metal. Therefore, the wear resistance is poor, and since the content of Si and C is high, penetration into the base material is shallow, making it difficult to form diluted parts.
従来−例としてファンのケーシングライナー及び側壁の
耐摩耗対策としてＷ系溶接棒によりビード盛りを施した
ときには、一層溶接のみでは拡散稀釈され充分な耐摩耗
効果が得られなかったが、本発明の溶接棒にてビード盛
りを施した結果、稀釈部は少なく、一層溶接のみで充分
耐摩耗効果を得ることが可能となった。Conventional example: When a bead was applied to the casing liner and side wall of a fan using a W-based welding rod as a wear-resistant measure, single-layer welding alone caused diffusion and dilution and did not provide a sufficient wear-resistant effect, but the welding of the present invention As a result of applying the bead with a rod, there were few diluted parts, and it became possible to obtain sufficient wear resistance with only welding.
以下実例によって本発明を更に詳述する。The present invention will be explained in more detail with reference to examples below.
実施例 １
直径５へのＪＩＳＧ３５２３ＳＷＹ１１心線に第１表に
示す配合割合のフラックスを外径８．５鬼（心線５５％
、フラックス４５％の重量割合）になる様に固着した溶
接棒にてビード盛を実施した際の溶着金属の化学成分と
ショアー硬度を第２表に示す。Example 1 A JIS G 3523 SWY 11 core wire with a diameter of 5 and a flux of the blending ratio shown in Table 1 was applied to an outer diameter of 8.5 mm (core wire 55%).
Table 2 shows the chemical composition and Shore hardness of the weld metal when bead deposition was carried out using a welding rod fixed so that the flux was 45% by weight.
上記の通り本発明のアーク溶接棒用フラックスを用いた
表面硬化用被覆アーク溶接棒は、高価なＷ或いは入手困
難なＭｏを使用することなくして、平均ショアー硬度が
８１〜８６程度で、ショアー硬度最大９４〜９６の硬化
部が点在する溶着金属を得ることができ、従って耐摩耗
性は著しく大であった。As mentioned above, the coated arc welding rod for surface hardening using the flux for arc welding rods of the present invention has an average Shore hardness of about 81 to 86 without using expensive W or difficult-to-obtain Mo. It was possible to obtain a deposited metal with a maximum of 94 to 96 hardened areas, and the wear resistance was therefore significantly higher.
実施例 ２
実施例１と同様の溶接棒を用い、第１図イに示す様に厚
さ９鬼の５Ｓ４１鋼板３にビード盛浴接をした後（ＩＨ
２）面で切断し、母材３と溶着金属４の稀釈度合を観察
したが、稀釈部即ち３と４の境界部５の厚みは０．５
％以内であった。Example 2 Using the same welding rod as in Example 1, welded a 5S41 steel plate 3 with a thickness of 9 mm as shown in Fig.
2) The dilution degree of the base metal 3 and the weld metal 4 was observed by cutting at the plane, and the thickness of the diluted part, that is, the boundary part 5 between 3 and 4 was 0.5.
It was within %.
比較例
フラックス中にＷＣＣ粉末７御〜８０
有する市販のＷ系耐摩耗性肉盛り用溶接棒（溶着金属の
化学成分が下記の表３に示すもの）を用い実施例２と同
様にビード盛溶接をした後（１１）（１２）面を切断し
、母材１３と溶着金属１４の稀釈具合を観察したところ
、稀釈部即ち１３と１４の境界部１５の厚みは２〜４Ｘ
であった。Comparative Example Bead welding was carried out in the same manner as in Example 2 using a commercially available W-based wear-resistant overlay welding rod (the chemical composition of the weld metal is shown in Table 3 below) containing 7 to 80 WCC powder in flux. After cutting the surfaces (11) and (12) and observing the degree of dilution of the base metal 13 and weld metal 14, it was found that the thickness of the diluted part, that is, the boundary part 15 between 13 and 14 was 2 to 4X.
Met.
第１図イは本発明のアーク溶接棒用フラックスを用いた
表面硬化用被覆アーク溶接棒を用いて溶接した際の溶接
状態を示す斜視図、第１図口は溶接個所の稀釈部断面を
示す略図、第２図イは公知の溶接棒を用いて溶接した際
の溶接状態を示す斜視図、第２図ｏ１ま溶接個所の稀釈
付断面を示す略図である。
図中、３，１３は鋼板、４，１４はビード盛部、５．１
５は母材と溶着金属の稀釈部を表わす。Figure 1A is a perspective view showing the welding state when welding is performed using a coated arc welding rod for surface hardening using the flux for arc welding rods of the present invention, and Figure 1A shows a cross section of the diluted part of the welding location. 2A is a perspective view showing a welding state when welding using a known welding rod, and FIG. 2A is a schematic view showing a diluted cross section of a welding location. In the figure, 3 and 13 are steel plates, 4 and 14 are bead embankments, and 5.1
5 represents a diluted portion of the base material and weld metal.
Claims (1)
肉盛浴接に使用される被覆アーク溶接棒のフラックスで
あって、フラックス中の合金元素の成分が、Ｃ！１０．
０〜２２．５重量％、Ｃｒ３．０〜１７．０重量楚、Ｓ
ｉ６．０〜１７．５重量楚、Ｂ ０．１〜２０重量楚、
Ｖｌ、Ｏ〜５．０重量楚、Ｍｎ２．０〜８．０重量楚、
Ｆ ｅ １２．０〜２３．０重量％（鉄合金中の鉄）、
残部がスラグ生成剤とからなることを特徴とするアーク
溶接棒用のフラックス。1. A flux for a coated arc welding rod that uses mild steel as the welding rod core wire and is used for overlay bath welding by arc welding, and the alloying element in the flux is C! 10.
0-22.5% by weight, Cr3.0-17.0% by weight, S
i6.0~17.5 weight Chu, B 0.1~20 weight Chu,
Vl, O~5.0 weight Chu, Mn2.0~8.0 weight Chu,
Fe 12.0-23.0% by weight (iron in iron alloy),
A flux for arc welding rods, characterized in that the remainder consists of a slag forming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP932780A JPS5823838B2 (en) | 1980-01-31 | 1980-01-31 | Flux for arc welding rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP932780A JPS5823838B2 (en) | 1980-01-31 | 1980-01-31 | Flux for arc welding rods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56109190A JPS56109190A (en) | 1981-08-29 |
| JPS5823838B2 true JPS5823838B2 (en) | 1983-05-17 |
Family
ID=11717369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP932780A Expired JPS5823838B2 (en) | 1980-01-31 | 1980-01-31 | Flux for arc welding rods |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823838B2 (en) |
-
1980
- 1980-01-31 JP JP932780A patent/JPS5823838B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56109190A (en) | 1981-08-29 |
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