CN1473959A - Anti-corrosion technical process for submarine surface - Google Patents

Anti-corrosion technical process for submarine surface Download PDF

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Publication number
CN1473959A
CN1473959A CNA021460841A CN02146084A CN1473959A CN 1473959 A CN1473959 A CN 1473959A CN A021460841 A CNA021460841 A CN A021460841A CN 02146084 A CN02146084 A CN 02146084A CN 1473959 A CN1473959 A CN 1473959A
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submarine
plating bath
container
plating
coating
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CNA021460841A
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Chinese (zh)
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陈有孝
王锦瑞
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Abstract

The technological process of anticorrosion of submarine surface utilizes the overall sealing property of submarine for overall surface treatment. The surface of the submarine is first coated chemically with one layer of 3-5 microns thick copper and then one layer of 50-80 microns thick composite Ni-P coating. The composite Ni-P coating has very strong sea water corrosion resistance as well as high hardness, strength and wear resistance, and the present invention raises the reliability and fighting strength of submarine greatly.

Description

The surface anticorrosion processing method of submarine
Technical field: the effect in modernized war of conventionally-powered submarine and nuclear-powered submarine increases day by day, and especially modern war makes submarine become the indispensable equipment of modernized naval, also is the symbol of a national naval military strength.This project belongs to modernization of national defense field.
Background technology: because submarine slips into b.s.l. work for a long time.The submarine surface is subjected to the parasitic erosion of corrosion and ocean of seawater for a long time, the submarine shell mostly is high-quality alloy steel and is welded, the submarine surface is easy to be corroded under the acting in conjunction of surface stress, composition difference, seawater, ocean parasite and huge sea pressure, influence submarine work-ing life even the safety that directly jeopardizes submarine.The surface anticorrosion of submarine becomes the manufacturing problem of being badly in need of solution of countries in the world submarine for this reason.The leader of General Armament Department of PLA also pays much attention to the anticorrosion research on submarine surface.Because the curved transition of submarine profile is big, the surface anticorrosion of submarine substantially all is the method that adopts topcoating both at home and abroad.Though different types of coating has improved the antiseptic power on submarine surface, also differ greatly with the requirement for anticorrosion on submarine surface.
Summary of the invention: the present invention proposes the new processing method of a kind of submarine surface anticorrosive.The object of the present invention is achieved like this, and the first step adopts the method for electroless plating to plate the metallic copper that a layer thickness is 3～5 μ m at the submarine integral surface.Second step was the nickel-phosphorus composite bed that plates one deck 50～80 μ m on copper plate with the method for electroless plating, well-known metallic nickel is the best metallic substance of anti-seawater corrosion, the anti-seawater corrosion ability that any chemical coating all is not so good as metallic nickel is strong, for improving intensity, hardness, the resistance to corrosion of nickel layer, adopt the method for the compound plating of Ni-P, at the Ni-P composite bed of submarine integral surface plating one deck 0.02～0.2mm, its resistance to corrosion greatly strengthens.
Specific implementation method is:
1) build a 2-3 doubly to the closed container of submarine, inner surface of container is industrial enamel or stainless steel, and container places the vessel space middle part with four submarines of naming a person for a particular job, and around the container several shower nozzles is arranged, and can spray into liquid and high-pressure hydraulic pump is housed and fluid circulation system.
2) will simulate the submarine surface and make processing of rust removing, the dilute hydrochloric acid solution with 10% removes corrosion.
3) be that the sand grains of 2-3mm carries out sandblasting with granularity, further remove corrosion, the stain of submarine.
4) preparation copper facing liquid, concrete composition is:
(1)CuSO 4·5H 2O?????????????????????10～20％；
(2) Tartaric acid potassium sodium NaKC4H4Oi4H 2O 10～20%;
(3) the BDTA disodium salt 25～40%;
(4)NaOH??????????????????????????????7～15％；
(5) formaldehyde HCHO37% 10～15%;
(6) a, a 1-dipyridyl 0.05～0.1%;
(7) yellow prussiate of potash K 4(Fe (CN) 6) 20～30%.
PH value is transferred to 12.5 with NaOH, bath temperature is risen to 40-50 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps calculate the thickness of coating on submarine surface according to the change in concentration of plating bath, the copper at submarine surface plating one deck 3～5 μ m stops to spray, and plating bath is emitted from container.Till being neutrality with pure water rinsing submarine surface to effusive water.Treat the compound plating processing of step nickel-phosphorus down of the air-dry laggard row in submarine surface.
5) preparation Ni-P composite plating bath body, concrete composition is:
(1)NiSO 4·6H 2O???????????????????20％；
(2)NaH 2PO 2·H 2O?????????????????25％；
(3)Na 3C 6H 6O 7???????????????????20％；
(4)NaC 2H 3O 2?????????????????????10％；
(5)〔CH 2(NH 2)COOH〕??????????????10％。
With pure water pH value is transferred to 3.8, bath temperature is risen to 80-85 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps go out the thickness of coating on submarine surface according to the nickel ion concentration change calculations of plating bath, when reaching thickness requirement, stop to spray, plating bath is emitted from container.
6) the Ni-P composite bed thickness on measurement submarine surface, and P content requires between the 7-11%, and optimum value is 9%, and all the other are Ni.
7) to the compound plating of submarine the time, put a test block identical with the submarine surfacing, the test block overlay coating is carried out physics, the anti-rotten experiment of chemistry, to infer the compound plating effect on submarine surface.
We have done the compound plating experiment of surface Ni-P to four kinds of high-quality steel, prove its anti-seawater corrosion effect splendid (seeing Table 1).
Table 1: the corrosion situation of four kinds of steel in different media, 63%H 2SO 4Solution, 5 moles of KOH solution were put in seawater 90 days.
Material Highquality carbon steel Structural alloy steel High-quality alloy steel Manganese steel
??H 2SO Extremely serious Extremely serious Extremely serious Extremely serious
??KOH Extremely serious Extremely serious Extremely serious Extremely serious
Seawater Corrosion is arranged Corrosion is arranged Corrosion is arranged Corrosion is arranged
Table 2: after four kinds of steel pass through the compound plating of Ni-P in the table 1, the anticorrosive situation in different media
Material ????H 2SO ????KOH Seawater
The compound plating of Ni-P Good Good Extremely strong
Neutral salt spray test shows that the plating of carbon steel surface is the Ni-P composite bed of 30 μ m, and wherein P content 9%, and Ni content 91% is not seen corrosion through 3000 hours surfaces.
Embodiment 1:
The simulation submarine is carried out surperficial corrosion-resistant treatments:
(1) simulation submarine volume 1m 3(2) simulation submarine enclosure material: 40CrMnTi; (3) simulation submarine enclosure material thickness and processing 8mm, modifier treatment; (4) surface treatment container, volume 3m 3, stainless steel is made, and is provided with 36 nozzles in container.(5) simulation submarine surface treatment (simulation submarine profile is identical with the submarine profile); 1. rust cleaning is removed the alloy material surface corrosion with dilute hydrochloric acid; 2. carry out sandblasting with sand grains and further eliminate rust, remove stain.(6) copper-plated composition is formulated as: 1. CuSO 45H 2O 20g/L; 2. Tartaric acid potassium sodium NaKC4H4Oi4H 2O 16g/L%; 3. BDTA disodium salt 20g/L; 4. NaOH 14g/L; 5. formaldehyde HCHO37% 16ml/L; 6. a, a 1-dipyridyl 20ml/L; 7. yellow prussiate of potash K 4(Fe (CN) 6) 10mg/L.PH value is transferred to 12.5 with NaOH, bath temperature is risen to 46 ℃.8. will simulate submarine and prop to container central authorities, place some of test blocks simultaneously with four fulcrums.9. ON cycle water pump, plating bath sprays from nozzle, be full of container after, water pump continues operation, plating bath circulates in container.
Thickness of coated copper layer is controlled at 3.2～3.6 μ m.
(7) composition of plating Ni-P layer is formulated as:
1. select analytical pure NiSO for use 46H 2O 2kg;
2. select analytical pure NaH for use 2PO 2H 2O 2.5kg;
3. select analytical pure Na for use 3C 6H 6O 72kg;
4. select analytical pure NaC for use 2H 3O 21kg;
⑤〔CH 2(NH 2)COOH〕???????????????????1kg。
With pure water above-mentioned 10kg compound is transferred to pH value 3.8 for extremely, in the plating bath pond plating bath is heated, temperature rises to 82 ℃.
(8) will simulate submarine and prop to container central authorities, place some of test blocks simultaneously with four fulcrums.
(9) ON cycle water pump, plating bath sprays from nozzle, be full of container after, water pump continues operation, plating bath circulates in container.
(10) through 30 minutes, 1h, 1.5h, 2h ... take out test block respectively, measure thickness of coating, get about 30 μ m, stopped reaction is emitted plating bath.
(11) test block and simulation submarine overlay coating are analyzed, the result is as follows:
1. thickness of coating 30 μ m;
2. the coating P content 9.2%;
3. coating density 7.92g/cm 3
4. fusing point is 890 ℃;
5. coating hardness HV520.
Test block is heated for 380 ℃, handle through 6h, hardness value reaches more than the HV1000.
6. coating corrosion resistance test:
In neutral salt spray 3000 hours, do not find corrosion.
Description of drawings: electrically heated copper facing liquid pool and electrically heated plating Ni-P liquid pool are sent in the sealed vessel that has submarine through high-pressure hydraulic pump, by several shower nozzles around the container, nozzle tilts to make the liquid of ejection to flow in container to a direction, the amount that liquid sprays into container equates with the spout flow, plate in the pond to electrically heated by reverse flow valve again, realize liquid circulation.

Claims (2)

1, the present invention proposes the processing method that a kind of submarine surface anticorrosion is handled.Its characteristic is:
1) build a 2-3 doubly to the closed container of submarine, inner surface of container is industrial enamel or stainless steel, and container places the vessel space middle part with four submarines of naming a person for a particular job, and around the container several shower nozzles is arranged, and can spray into liquid and high-pressure hydraulic pump is housed and fluid circulation system.
2) processing of rust removing is made on the submarine surface, available 10% dilute hydrochloric acid solution removes corrosion.
3) be that the sand grains of 2-3mm carries out sandblasting with granularity, further remove corrosion, the stain of submarine.
4) preparation copper facing liquid, concrete composition is:
(1)CuSO 4·5H 2O????????????????????????10～20％；
(2) Tartaric acid potassium sodium NaKC 4H 4Oi4H 2O 10～20%;
(3) the BDTA disodium salt 25～40%;
(4)NaOH?????????????????????????????????7～15％；
(5) formaldehyde HCHO37% 10～15%;
(6) a, a 1-dipyridyl 0.05～0.1%;
(7) yellow prussiate of potash K 4(Fe (CN) 6) 20～30%.
PH value is transferred to 12.5 with NaOH, bath temperature is risen to 40-50 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps calculate the thickness of coating on submarine surface according to the change in concentration of plating bath, the copper at submarine surface plating one deck 3～5 μ m stops to spray, and plating bath is emitted from container.Till being neutrality with pure water rinsing submarine surface to effusive water.Treat the compound plating processing of step nickel-phosphorus down of the air-dry laggard row in submarine surface.
5) preparation Ni-P composite plating bath body, concrete composition is:
(1)NiSO 4·6H 2O????????????????20％；
(2)NaH 2PO 2·H 2O??????????????25％；
(3)Na 3C 6H 6O 7????????????????20％；
(4)NaC 2H 3O 2??????????????????10％；
(5)〔CH 2(NH 2)COOH〕???????????10％。
With pure water pH value is transferred to 3.8, bath temperature is risen to 80-85 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps go out the thickness of coating on submarine surface according to the nickel ion concentration change calculations of plating bath, when reaching thickness requirement, stop to spray, plating bath is emitted from container.
6) the Ni-P composite bed thickness on measurement submarine surface, and P content requires between the 7-11%, and optimum value is 9%, and all the other are Ni.
7) to the compound plating of submarine the time, put a test block identical with the submarine surfacing, the test block overlay coating is carried out physics, the anti-rotten experiment of chemistry, to infer the compound plating effect on submarine surface.
2, the processing method of handling according to claims 1 described submarine surface anticorrosion, its characteristic is:
1) build a 2-3 doubly to the closed container of submarine, inner surface of container is industrial enamel or stainless steel, and container places the vessel space middle part with four submarines of naming a person for a particular job, and around the container several shower nozzles is arranged, and can spray into liquid and high-pressure hydraulic pump is housed and fluid circulation system.
2) processing of rust removing is made on the submarine surface, available 10% dilute hydrochloric acid solution removes corrosion.
3) be that the sand grains of 2-3mm carries out sandblasting with granularity, further remove corrosion, the stain of submarine.
4) preparation copper facing liquid, concrete composition is:
(1)CuSO 4·5H 2O???????????????????20％；
(2) Tartaric acid potassium sodium NaKC 4H 4Oi4H 2O 10%;
(3) the BDTA disodium salt 29.9%;
(4)NaOH????????????????????????????15％；
(5) formaldehyde HCHO37% 15%;
(6) a, a 1-dipyridyl 0.1%;
(7) yellow prussiate of potash K 4(Fe (CN) 6) 15%.
PH value is transferred to 12.5 with NaOH, bath temperature is risen to 45 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps calculate the thickness of coating on submarine surface according to the change in concentration of plating bath, the copper at submarine surface plating one deck 3.6 μ m stops to spray, and plating bath is emitted from container.Till being neutrality with pure water rinsing submarine surface to effusive water.Treat the compound plating processing of step nickel-phosphorus down of the air-dry laggard row in submarine surface.
5) preparation Ni-P composite plating bath body, concrete composition is:
(1)NiSO 4·6H 2O????????????????????20％；
(2)NaH 2PO 2·H 2O??????????????????25％；
(3)Na 3C 6H 6O 7????????????????????20％；
(4)NaC 2H 3O 2??????????????????????10％；
(5)〔CH 2(NH 2)COOH〕???????????????10％。
With pure water pH value is transferred to 3.8, bath temperature is risen to 80-85 ℃.
With water pump plating bath is sprayed to submarine from different perspectives, make plating bath be full of container, under the effect of spraying, plating bath is in the submarine surface flow.According to the thickness requirement controlled liq spraying cycle mobile time of coating, perhaps go out the thickness of coating on submarine surface according to the nickel ion concentration change calculations of plating bath, when reaching thickness requirement, stop to spray, plating bath is emitted from container.
6) the Ni-P composite bed thickness on measurement submarine surface, and P content requires between the 7-11%, and optimum value is 9%, and all the other are Ni.
7) to the compound plating of submarine the time, put a test block identical with the submarine surfacing, the test block overlay coating is carried out physics, the anti-rotten experiment of chemistry, to infer the compound plating effect on submarine surface.
CNA021460841A 2002-10-30 2002-10-30 Anti-corrosion technical process for submarine surface Pending CN1473959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA021460841A CN1473959A (en) 2002-10-30 2002-10-30 Anti-corrosion technical process for submarine surface

Publications (1)

Publication Number Publication Date
CN1473959A true CN1473959A (en) 2004-02-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139747A (en) * 2010-12-06 2011-08-03 青岛双瑞海洋环境工程有限公司 Antifouling system and method for ship propeller
CN105350007A (en) * 2015-10-19 2016-02-24 无锡清杨机械制造有限公司 Derusting method for rusty surface of machine
US20220168995A1 (en) * 2019-04-02 2022-06-02 Sumitomo Electric Industries, Ltd. Composite member and heat radiation member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139747A (en) * 2010-12-06 2011-08-03 青岛双瑞海洋环境工程有限公司 Antifouling system and method for ship propeller
CN105350007A (en) * 2015-10-19 2016-02-24 无锡清杨机械制造有限公司 Derusting method for rusty surface of machine
US20220168995A1 (en) * 2019-04-02 2022-06-02 Sumitomo Electric Industries, Ltd. Composite member and heat radiation member
US11890831B2 (en) * 2019-04-02 2024-02-06 Sumitomo Electric Industries, Ltd. Composite member and heat radiation member
JP7469295B2 (en) 2019-04-02 2024-04-16 住友電気工業株式会社 Composite material and heat dissipation material

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