JP2531744B2 - Marine steel structure anticorrosion protection cover - Google Patents
Marine steel structure anticorrosion protection coverInfo
- Publication number
- JP2531744B2 JP2531744B2 JP63126842A JP12684288A JP2531744B2 JP 2531744 B2 JP2531744 B2 JP 2531744B2 JP 63126842 A JP63126842 A JP 63126842A JP 12684288 A JP12684288 A JP 12684288A JP 2531744 B2 JP2531744 B2 JP 2531744B2
- Authority
- JP
- Japan
- Prior art keywords
- protective cover
- steel structure
- anticorrosion
- anode material
- marine steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 63
- 239000010959 steel Substances 0.000 title claims description 63
- 230000001681 protective effect Effects 0.000 claims description 46
- 239000010405 anode material Substances 0.000 claims description 30
- 239000011247 coating layer Substances 0.000 claims description 17
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 239000013521 mastic Substances 0.000 description 15
- 239000013535 sea water Substances 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 239000004264 Petrolatum Substances 0.000 description 8
- 229940066842 petrolatum Drugs 0.000 description 8
- 235000019271 petrolatum Nutrition 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 230000003449 preventive effect Effects 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Prevention Of Electric Corrosion (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、海洋鋼構造物のうちで最も腐食されやす
い部分、例えば、潮の満潮、干潮により海水中に潜った
り海面上に露出したりする干満帯（タイダル）または海
水のしぶきのかかる飛沫体（スプラッシュゾーン）の防
食に用いる保護カバーに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a portion of a marine steel structure that is most likely to be corroded, such as diving in seawater or exposing on the sea surface due to high tide or low tide. The present invention relates to a protective cover used for preventing corrosion of tidal zones (tidal) or splashes of sea water (splash zone).
一般に、海洋鋼構造物、例えば鋼矢板等を海中に構築
した場合、上記鋼矢板の干満帯および飛沫体にあたる部
分には、ペトロラタムテープ、マスチックまたはペトロ
ラタムパテ等の封着部材を貼付けまたは塗布し、上記封
着部材を上記鋼矢板と同一形状をしたプラスチック製保
護カバーで被覆し、上記保護カバーをボルト等で固定し
て防食効果を高めていた。Generally, when a marine steel structure, for example, a steel sheet pile or the like is constructed in the sea, the portion corresponding to the tidal zone and the droplets of the steel sheet pile is attached or coated with a sealing member such as petrolatum tape, mastic or petrolatum putty, The sealing member is covered with a plastic protective cover having the same shape as the steel sheet pile, and the protective cover is fixed with bolts or the like to enhance the anticorrosion effect.
この従来の保護カバーを用いる防食法を第３図にもと
づいて具体的に説明する。The anticorrosion method using this conventional protective cover will be specifically described with reference to FIG.
第３図は、従来のマスチックおよびペトロラタムパテ
と保護カバーを用いて海水からの腐食防止を施した鋼矢
板の断面図であり、１は保護カバー、２はマスチック、
２′はペトロラタムパテ、３は鋼矢板、４はボルト、５
は結合部である。FIG. 3 is a cross-sectional view of a steel sheet pile in which corrosion prevention from seawater is performed using a conventional mastic and petrolatum putty and a protective cover, 1 is a protective cover, 2 is a mastic,
2'is petrolatum putty, 3 is steel sheet pile, 4 is bolt, 5
Is a joint.
上記第３図にみられるように、組立てられた鋼矢板３
の海側表面にまずマスチック２を貼付ける。この場合、
鋼矢板３の接合部５には、特に水密性を確保するために
ペトロラタムパテ２′を用いて目張りを行なうことも行
なわれている。このようにして貼付けられたマスチック
２を保護するために、上記マスチック２を保護カバー１
で被覆し、上記保護カバー１は保護カバー１の貫通孔９
に通したボルト４をしめることにより上記マスチック２
を圧着し鋼矢板３に固着される。As seen in FIG. 3 above, the assembled steel sheet pile 3
First, stick Mastic 2 on the sea side surface of. in this case,
At the joint portion 5 of the steel sheet pile 3, a petrolatum putty 2'is also used as a seal to ensure watertightness. In order to protect the mastic 2 attached in this manner, the mastic 2 is protected by a protective cover 1
The protective cover 1 is covered with a through hole 9 of the protective cover 1.
By tightening the bolt 4 passed through the
Is pressed and fixed to the steel sheet pile 3.
従来、海中に構築した鋼矢板の干満帯（タイダル）お
よび飛沫体（スプラッシュゾーン）は、上述の如くにし
て海水から水密的に絶縁され、腐食を防いでいたのであ
る。Heretofore, the tidal zones (tidal) and splashes (splash zones) of steel sheet piles constructed in the sea were watertightly insulated from seawater as described above to prevent corrosion.
ところが、上記保護カバー１と鋼矢板３の間にマスチ
ック２を挾んでボルト４を締めつけることによりマスチ
ック２を圧着する従来の鋼矢板防食法では、 マスチック２にボルト４を通すための貫通孔９を設け
て圧着するために、上記貫通孔９とボルト４との間隙か
ら海水が浸透し、鋼矢板を腐食する。However, in the conventional steel sheet pile anticorrosion method in which the mastic 2 is crimped by sandwiching the mastic 2 between the protective cover 1 and the steel sheet pile 3 and tightening the bolt 4, the through hole 9 for inserting the bolt 4 into the mastic 2 is formed. Since it is provided and crimped, seawater permeates through the gap between the through hole 9 and the bolt 4 and corrodes the steel sheet pile.
鋼矢板の結合部５の近傍の複雑な形状をした部分をボ
ルト４を締めつけることによりマスチック２を圧着して
も、下地となる鋼矢板３が複雑な形状をしているために
圧着不足部分が生じ、上記圧着不足部分に海水が浸透し
て滞留し鋼矢板を腐食する。Even if the mastic 2 is crimped by tightening the bolt 4 at a portion having a complicated shape in the vicinity of the joint portion 5 of the steel sheet pile, the insufficiently crimped portion is caused because the steel sheet pile 3 as the base has a complicated shape. The seawater permeates and stays in the insufficiently crimped portion and corrodes the steel sheet pile.
保護カバーの端部、保護カバーの接合部は、上記お
よびと同様に圧着不足部分が生じやすく、ペトロラタ
ムパテ対象面への海水浸透、滞留を引起し、腐食の原因
となる。At the end of the protective cover and the joint of the protective cover, the insufficient crimping portion is likely to occur as in the above and the above case, which causes permeation and retention of seawater on the target surface of the petrolatum putty and causes corrosion.
したがって、従来の鋼矢板防食法では、いずれにして
も腐食防止は不完全となるという問題点があった。Therefore, the conventional steel sheet pile anticorrosion method has a problem that the corrosion prevention is incomplete in any case.
一方、海洋鋼構造物の表面に流電陽極材を含む防錆剤
を塗布して海洋鋼構造物自体の防食を行うことも知られ
ているが、この流電陽極材を含む防錆剤を塗布した海洋
鋼構造物にマスチックを貼付けても、防錆剤の防食効果
が低下すると、防錆剤の再塗布を行う必要があり、一度
敷設された海洋鋼構造物に防錆剤を再度塗布することは
非常に困難であった。On the other hand, it is also known to apply a rust preventive agent containing a galvanic anode material to the surface of a marine steel structure to prevent corrosion of the marine steel structure itself. Even if a mastic is applied to the applied marine steel structure, if the anticorrosive effect of the rust preventive agent decreases, it is necessary to reapply the rust preventive agent, and the rust preventive agent is applied again to the once laid marine steel structure. It was very difficult to do.
そこで、本発明者等は、かかる観点から創意工夫を行
った結果、 （ａ）海洋鋼構造物の干満帯、飛沫帯等の海水浸透予想
部表面を、マスチック、ペトロラタムテープ、ペトロラ
タムパテ等の封着部材で被覆し、その上に流電陽極材か
らなる被覆層と合成樹脂製保護カバーからなる防食保護
カバーをボルトによって取り付けると、海洋鋼構造物と
防食保護カバーの流電陽極材被覆層とはボルトおよび流
電陽極材が溶出したイオンによって電気的に接続し、海
水の滞留等による海洋鋼構造物の腐食を防止することが
できる、 （ｂ）防食保護カバーの流電陽極材を一層積極的に海洋
鋼構造物と電気的に接続させるには、突起を有する保護
カバーと流電陽極材とからなる防食保護カバーを用いる
とよい、 などの知見を得たのである。Then, as a result of the inventor's ingenuity from such a viewpoint, (a) the seawater permeation prediction surface such as a tidal zone and a splash zone of a marine steel structure is sealed with a mastic, a petrolatum tape, a petrolatum putty, etc. When the anticorrosion protection cover made of the galvanic anode material and the synthetic resin protective cover is attached by bolts, the galvanic anode material coating layer of the marine steel structure and the anticorrosion protective cover is formed. Bolts and galvanic anode material can be electrically connected by dissolved ions to prevent corrosion of marine steel structures due to seawater retention, etc. (b) The galvanic anode material of the anticorrosion protection cover is more positive Therefore, in order to electrically connect to a marine steel structure, it is preferable to use an anticorrosion protective cover composed of a protective cover having protrusions and a galvanic anode material.
この発明は、かかる知見に基づいてなされたものであ
って、 海洋鋼構造物と相似の断面形状を有し、さらに貫通孔
を有する合成樹脂製保護カバーと、上記保護カバーの片
面に形成された流電陽極材からなる被覆膜とで構成され
た海洋鋼構造物の防食保護カバーであって、 上記合成樹脂製保護カバーは、流電陽極材からなる被
覆層が形成されている片側の側壁に突起が設けられてい
る保護カバーである海洋鋼構造物防食保護カバーに特徴
を有するものである。The present invention has been made based on such findings, and has a synthetic resin protective cover having a cross-sectional shape similar to that of a marine steel structure and further having a through hole, and is formed on one surface of the protective cover. A protective cover for a marine steel structure composed of a coating film made of galvanic anode material, wherein the synthetic resin protective cover is one side wall on which a coating layer made of galvanic anode material is formed. The present invention is characterized by a marine steel structure anticorrosion protective cover which is a protective cover provided with protrusions.
上記流電陽極材からなる被覆層は亜鉛又は亜鉛合金が
一般に使用されているが、上記亜鉛または亜鉛合金に限
定されることなく、鋼よりも電位が卑な金属およびその
合金、例えば、アルミニウム、マンガン、マグネシウム
およびそれらの合金が使用される。The coating layer made of the galvanic anode material is generally zinc or a zinc alloy, but is not limited to the zinc or the zinc alloy, a metal having a lower potential than steel and its alloy, for example, aluminum, Manganese, magnesium and their alloys are used.
上記保護カバーは、プラスチック等の合成樹脂で作成
することが好ましい。合成樹脂製保護カバーの片面に流
電陽極材からなる被覆層を形成するには、無電解メッ
キ、溶射、蒸着等の手段により行うことができるが、流
電陽極材からなるシートを接着剤等で貼付けてもよい。The protective cover is preferably made of synthetic resin such as plastic. The coating layer made of galvanic anode material can be formed on one surface of the synthetic resin protective cover by means of electroless plating, thermal spraying, vapor deposition, etc. You may attach it with.
流電陽極材の被覆層が海洋鋼構造物とボルトを介して
接触していれば十分に海洋鋼構造物の防食は行なわれる
が、ボルトと流電陽極材の被覆層の接触が不完全であっ
て、 流電陽極材が完全に海洋鋼構造物と接触していなくて
も流電陽極材が海洋鋼構造物のごく近くに存在し、流電
陽極材が海水に浸漬していれば溶解し、流電陽極材のイ
オンが防食効果を発揮するので電気的に接続したと同様
な効果がある。しかしこの発明の防食保護カバーの流電
陽極材を一層積極的に海洋鋼構造物と電気的に接続させ
るには、突起を有する保護カバーと流電陽極材とからな
る防食保護カバーを用いるとよい。上記保護カバーの突
起は封着部材を貫通し流電陽極材と海洋鋼構造物を接触
せしめる作用と外部より上記封着部材を海洋鋼構造物表
面に強固に圧着させる作用を有する。If the coating layer of the galvanic anode material is in contact with the marine steel structure via the bolts, the corrosion of the marine steel structure is sufficiently performed, but the contact between the bolt and the coating layer of the galvanic anode material is incomplete. Therefore, even if the galvanic anode material is not completely in contact with the marine steel structure, the galvanic anode material exists in the immediate vicinity of the marine steel structure, and the galvanic anode material is dissolved if it is immersed in seawater. However, since the ions of the galvanic anode material exert the anticorrosion effect, there is the same effect as when electrically connected. However, in order to more positively electrically connect the galvanic anode material of the anticorrosion protective cover of the present invention to the marine steel structure, it is preferable to use the anticorrosion protective cover composed of the protective cover having protrusions and the galvanic anode material. . The protrusion of the protective cover has a function of penetrating the sealing member to bring the galvanic anode material and the marine steel structure into contact with each other and a function of firmly pressing the sealing member to the surface of the marine steel structure from the outside.
つぎに、この発明を実施例にもとづいて具体的に説明
する。Next, the present invention will be specifically described based on Examples.
第１図は、海洋鋼構造物の鋼矢板の防食に用いるこの
発明の防食保護カバーの一部断面図、 第２図は、上記第１図の防食保護カバーを海洋鋼構造
物の鋼矢板に取付けて防食処理を施した状態の一部断面
図、 第３図は、海洋鋼構造物の鋼矢板に従来の保護カバー
を取付けて防食処理を施した状態の一部断面図である。FIG. 1 is a partial cross-sectional view of an anticorrosion protective cover of the present invention used for anticorrosion of a steel sheet pile of a marine steel structure, and FIG. 2 is a steel sheet pile of a marine steel structure using the anticorrosion protective cover of FIG. FIG. 3 is a partial cross-sectional view showing a state in which a conventional protective cover is attached to a steel sheet pile of a marine steel structure and subjected to anticorrosion treatment.
まず、第１図に示されるこの発明の防食保護カバーに
ついて説明する。First, the anticorrosion protection cover of the present invention shown in FIG. 1 will be described.
第１図に示されるこの発明の防食保護カバー８は、鋼
矢板の組立曲線に沿う形状を有するプラスチック製の保
護カバー１の片面に、亜鉛を溶射またはシート状にして
接着するなどして流電陽極材被覆層６を形成することに
より製造される。この防食保護カバー８は、鋼矢板３の
片面にマスチック２を被覆したのち、ボルト４を保護カ
バー８の貫通孔９に通すことにより鋼矢板３に取付けら
れる。この場合、防食保護カバー８に設けられたボルト
４の貫通孔９の間隙から海水が浸透しても、流電陽極材
被覆層６が犠牲陽極となって鋼矢板３の腐食は妨げられ
る。The anticorrosion protection cover 8 of the present invention shown in FIG. 1 is a galvanic coating formed by spraying zinc or adhering it in a sheet shape on one surface of a plastic protection cover 1 having a shape along the assembly curve of a steel sheet pile. It is manufactured by forming the anode material coating layer 6. The anticorrosion protection cover 8 is attached to the steel sheet pile 3 by coating the mastic 2 on one surface of the steel sheet pile 3 and then inserting the bolt 4 into the through hole 9 of the protection cover 8. In this case, even if seawater permeates through the gap of the through hole 9 of the bolt 4 provided in the anticorrosion protection cover 8, the galvanic anode material coating layer 6 serves as a sacrificial anode to prevent corrosion of the steel sheet pile 3.
第１図に示されるこの発明の実施例の防食保護カバー
８は、片面に突起７を有するプラスチック製保護カバー
１と流電陽極材被覆層６からなり、この防食保護カバー
８は、第２図に示されるように、ボルト４で鋼矢板３に
固定すると上記突起７はマスチック２を貫通し、保護カ
バー１の表面に形成される流電陽極材被覆層６を鋼矢板
３に電気的に接続させることができる。The anticorrosion protective cover 8 of the embodiment of the present invention shown in FIG. 1 comprises a plastic protective cover 1 having a projection 7 on one side and a galvanic anode material coating layer 6. The anticorrosion protective cover 8 is shown in FIG. As shown in FIG. 4, when the bolts 4 are fixed to the steel sheet pile 3, the protrusions 7 penetrate the mastic 2, and the galvanic anode material coating layer 6 formed on the surface of the protective cover 1 is electrically connected to the steel sheet pile 3. Can be made.
（１）この発明の防食保護カバーを用いると、従来の防
食法と全く同じ方法で簡単に海洋鋼構造物に防食処理を
施すことができ、海洋鋼構造物の表面に被覆した封着部
材の密着が不完全であって、海水が海洋鋼構造物と封着
部材の隙間に滞留しても、この発明の防食保護カバーの
流電陽極材被覆層により海洋鋼構造物の腐食は防止され
るので、従来よりも封着部材の被覆に注意を払う必要が
なく、また流電陽極材被覆層が消耗しても防食保護カバ
ーを交換するだけで簡単に流電陽極材被覆層を更新する
ことができる、 （２）この発明の防食保護カバー突起を有するので、封
着部材を従来よりも一層強固に海洋鋼構造物に固着する
ことができるとともに、流電陽極材被覆層と海洋鋼構造
物とを電気的に十分に接続することができる、 などの優れた効果を奏するものである。(1) By using the anticorrosion protective cover of the present invention, it is possible to easily perform anticorrosion treatment on a marine steel structure by exactly the same method as a conventional anticorrosion method, and a sealing member coated on the surface of the marine steel structure can be provided. Even if seawater is imperfectly adhered and seawater stays in the gap between the marine steel structure and the sealing member, the galvanic anode material coating layer of the anticorrosion protection cover of the present invention prevents corrosion of the marine steel structure. Therefore, it is not necessary to pay more attention to the coating of the sealing member than before, and even if the coating layer of the galvanic anode material is consumed, the coating layer of the galvanic anode material can be easily updated simply by replacing the anticorrosion protection cover. (2) Since it has the anticorrosion protection cover protrusion of the present invention, the sealing member can be more firmly fixed to the marine steel structure as compared with the conventional one, and the galvanic anode material coating layer and the marine steel structure are also provided. Can be electrically connected to the Was one in which the effect.
第１図は、この発明の防食保護カバーの一部断面図、 第２図は、第１図の防食保護カバーを海洋鋼構造物に取
付けた状態を示す一部断面図、 第３図は、海洋鋼構造物の鋼矢板に従来の保護カバーを
取付けて防食処理を施した状態の一部断面図である。 １……保護カバー、２……マスチック、３……鋼矢板、
４……ボルト、５……結合部、６……流電陽極材被覆
層、７……突起、８……この発明の防食保護カバー、９
……貫通孔1 is a partial sectional view of an anticorrosion protective cover of the present invention, FIG. 2 is a partial sectional view showing a state in which the anticorrosion protective cover of FIG. 1 is attached to a marine steel structure, and FIG. 3 is It is a partial cross section figure of the state where the conventional protective cover was attached to the steel sheet pile of a marine steel structure, and the anticorrosion process was performed. 1 ... Protective cover, 2 ... Mastic, 3 ... Steel sheet pile,
4 ... Bolt, 5 ... Coupling part, 6 ... Galvanic anode material coating layer, 7 ... Projection, 8 ... Corrosion protection cover of this invention, 9
...... Through hole
Claims (1)
し、側壁にボルトの貫通孔を有する合成樹脂製保護カバ
ーと、上記保護カバーの片側に形成された流電陽極材か
らなる被覆層とで構成されてなる海洋鋼構造物防食保護
カバーであって、 上記合成樹脂製保護カバーは、流電陽極材からなる被覆
層が形成されている片側の側壁に突起が設けられている
保護カバーであることを特徴とする海洋鋼構造物防食保
護カバー。1. A synthetic resin protective cover having a cross-sectional shape similar to that of a marine steel structure and having a through hole for a bolt on a side wall, and a galvanic anode material formed on one side of the protective cover. A marine steel structure anticorrosion protective cover composed of a coating layer, wherein the synthetic resin protective cover is provided with a protrusion on one side wall on which a coating layer made of galvanic anode material is formed. An anticorrosion protective cover for marine steel structures, which is a protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126842A JP2531744B2 (en) | 1988-05-24 | 1988-05-24 | Marine steel structure anticorrosion protection cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126842A JP2531744B2 (en) | 1988-05-24 | 1988-05-24 | Marine steel structure anticorrosion protection cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01298186A JPH01298186A (en) | 1989-12-01 |
| JP2531744B2 true JP2531744B2 (en) | 1996-09-04 |
Family
ID=14945227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63126842A Expired - Lifetime JP2531744B2 (en) | 1988-05-24 | 1988-05-24 | Marine steel structure anticorrosion protection cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531744B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001323431A (en) * | 2000-05-17 | 2001-11-22 | Nippon Steel Corp | Heavy corrosion resistant polyurethane coated steel |
| CN201674886U (en) * | 2009-10-22 | 2010-12-22 | 吴为国 | Reduction gearbox of waterwheel aerator and seawater aerator with same |
| US11274411B2 (en) | 2018-07-10 | 2022-03-15 | Edelman Projects Pty Ltd | Wall protection assembly |
| CN116495127A (en) * | 2023-04-27 | 2023-07-28 | 江南造船(集团)有限责任公司 | An anti-corrosion installation method for connectors of compass equipment outside the cabin of a ship |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56102584A (en) * | 1980-01-21 | 1981-08-17 | Showa Netsugaku Kogyo Kk | Corrosion inhibitor for galvanic anode method |
| JPS5713889U (en) * | 1980-06-30 | 1982-01-23 | ||
| JPS5853137A (en) * | 1981-09-25 | 1983-03-29 | Nec Corp | Permanent magnet for traveling wave tube |
| JPS60374U (en) * | 1983-05-30 | 1985-01-05 | 東北金属工業株式会社 | Seed crystal support |
| JPS60159061U (en) * | 1984-03-30 | 1985-10-23 | 新日本製鐵株式会社 | Cover for anti-corrosion lining of steel sheet pile wall |
| JPS6372891A (en) * | 1986-09-12 | 1988-04-02 | Mitsubishi Cable Ind Ltd | Corrosion resistant tape |
-
1988
- 1988-05-24 JP JP63126842A patent/JP2531744B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01298186A (en) | 1989-12-01 |
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