CN104149933A - Method for manufacturing anticorrosion ship hulls - Google Patents
Method for manufacturing anticorrosion ship hulls Download PDFInfo
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- CN104149933A CN104149933A CN201410372457.5A CN201410372457A CN104149933A CN 104149933 A CN104149933 A CN 104149933A CN 201410372457 A CN201410372457 A CN 201410372457A CN 104149933 A CN104149933 A CN 104149933A
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Abstract
The invention relates to the field of shipbuilding, in particular to a method for manufacturing anticorrosion ship hulls. The method for manufacturing the anticorrosion ship hulls includes steel flattening; welding and assembling; surface pre-cleaning; secondary rust removing; electroplating; protective layer covering. The method has the advantages that the problems that ship hulls in water are prone to corrosion can be solved, the ship hulls are abrasion-resistant and are high in strength, and accordingly the service lives of the ship hulls can be prolonged.
Description
Technical field
The present invention relates to shipbuilding field, related in particular to a kind of manufacture method of anticorrosion hull.
Background technology
On the earth, approximately 71% area is all ocean, marine resources are very abundant, but because the area of ocean is too wide, therefore need to just can shuttle back and forth in ocean by various ships, while can not get safeguarding if ship navigates by water for a long time in ocean, hull is easy to by seawater, marine atmosphere and marine organism corrsion or adheres to, and affects safety and the stability of ship navigation.
In order to prevent hull exterior draft partial corrosion or to be adhered to the navigation that affects ship by aquatic organism, need to, to hull outside face Timing Processing, in prior art, conventionally adopt and spray paint or electric plating method.If adopt the method for spraying paint to process hull outside face, layer of paint, under the immersion of seawater and the impact of marine climate, extremely easily comes off, and causes the anti-corrosion effect of waterproof very undesirable; If adopt electrochemical plating to process, not only the processing time longer, once processing method mal also can affect the navigation of ship.
Therefore, working out a kind of process simple, the anti-corrosion excellent of waterproof of processing, is the new problem that those skilled in the art require study.
Summary of the invention
The deficiency existing for prior art, object of the present invention is just to provide a kind of manufacture method of anticorrosion hull, has solved hull corrosion-prone problem in water, and this hull is more wear-resisting simultaneously, and intensity is higher, thereby has extended service life.
To achieve these goals, the technical solution used in the present invention is such: a kind of manufacture method of anticorrosion hull, comprises the following steps:
(1) prepare the steel for the manufacture of hull, in described steel, contain C, Mn, Si, P, S, AlS, Cu, Cr, Ni, Mo and Fe, described each component content is that C0.01 ~ 0.18%, Mn0.90 ~ 1.60%, Si0.10 ~ 0.50%, P0.01 ~ 0.04%, S0.01 ~ 0.04%, AlS >=0.015%, Cu0.01 ~ 0.35%, Cr0.01 ~ 0.20%, Ni0.01 ~ 0.40%, Mo0.01 ~ 0.08% and all the other are Fe;
(2) steel plate of the steel of step (1) being made utilizes leveler to correct, and steel plate is carried out to leveling back and forth at least one times by leveler;
(3) the straight shaped steel of the steel of step (1) being made utilizes section-straightening machine to correct;
(4) again the steel of step (7) are assembled into hull by the mode of welding;
(5) steel are carried out to surperficial pre-cleaning: adopt raw MAT'L ball blast method, adopt the rotary blade of centrifugal shot-blasting machine that shot or other abrasive materials are high-speed projected on the surface of steel, the oxide skin of steel surface and iron rust are peeled off;
(6) steel of step (5) pre-cleaning are carried out to secondary rust removal, adopt segmentation shot-peening method, utilize the mobile pressurized air of airduct high speed that shot is ejected on surface of steel plate, rusty scale and oxide skin are peeled off;
(7) steel of step (6) are used into electroplating solution and electroplated, described electroplating solution comprises following composition: nickelous sulfate, nickelous sulfate nickel sulfamic acid, nickel chloride, boric acid, described solution temperature is 30-70 ℃, the density of electric current is to replace between 5-10 A/dm2 and 40-55A/dm2, alternate frequency is 20-30 time, wherein the time between low current and high electric current compares for 1:2-2:3, and electroplating time is 15min-20min;
(8) steel that plated in step (7) are passed through through in sodium hydroxide solution, and dry after cleaning with clear water, temperature is controlled at 480-600 ℃;
(9) protective mulch: the steel surface of step (8) is coated to protective cover, and described protective cover is for first coating the anticorrosion waterproof layer of epoxy glass laminate, then coated in enamel anticorrosion with coat waterproof layer.
As a kind of preferred version, steel plate in described step (2) is sheet steel, the leveler adopting is multiaxis leveler, band steel or fritter sheet material also can be corrected on plate straightening machine simultaneously, the band steel of same thickness or fritter sheet material are placed on to one as on the steel plate of liner, then by plate straightening machine, carry out at least one times back and forth leveling.
As a kind of preferred version, the steel plate in described step (2) is plate iron, adopts large-scale hydraulic press to carry out leveling at platform.
As a kind of preferred version, the concentration of electroplating solution composition in described step (4): concentration is that 120 g/L-250 g/L nickelous sulfates, concentration are that 280 g/L-360g/L nickelous sulfate nickel sulfamic acids, concentration are that nickel chloride, the concentration of 15 g/L-25 g/L is the boric acid of 20 g/L.
The lathe of described section-straightening machine is that two supports and one push away support, support does not have power transmission, spacing between two supports can regulate as required, pushing away one of support loading can do on the slide block of horizontal reciprocating movement, by electrical motor, by retarder or by pneumatics, driving and making horizontal reciprocating movement, when correcting shaped steel, shaped steel is being leaned against in two supports, shaped steel between support is subject to pushing away the effect of support application force and produces distortion, to realize the object of correcting shaped steel.
Steel, when steel mill's hot rolling, can directly play oxidizing reaction with airborne oxygen, form oxide skin intact, fine and close on surface.During transportation is afterwards stored, moisture in steel surface meeting absorbed air, owing to containing a certain proportion of carbon and other elements in steel, thereby can form the micro cell of figure place and electrochemical corrosion occurs on the surface of steel, make surface produce rust staining, so will clear up the surface of steel.
On metal surface, using covering protection is the common and the most important method that prevents metal corrosion, and its effect is to make metal to be hedged off from the outer world.To hinder metal surface, form micro cell, from the external world, create conditions to avoid the generation of corrosion, cover not only close structure of protective cover used, complete atresia, not saturating electrolyte, and strong adhesion, high strength, wear-resisting, be evenly distributed.
Compared with prior art, beneficial effect of the present invention:
1. pair steel carry out leveling, make hull more attractive in appearance, are more conveyor line;
2. pair steel carry out electroplating after prerinse, secondary rust removal again, remove oxide skin and the rust staining of steel raw material;
3. pair hull protective mulch, the protective cover adopting is close structure not only, complete atresia, electrolyte thoroughly, and strong adhesion, high strength, wear-resisting, be evenly distributed, make more withstanding corrosion of hull, more wear-resisting, intensity is higher.
The specific embodiment
Below with reference to specific embodiment, technical scheme provided by the invention is elaborated, should understands the following specific embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
Embodiment 1:
A manufacture method for anticorrosion hull, comprises the following steps:
(1) prepare the steel for the manufacture of hull, in described steel, contain C, Mn, Si, P, S, AlS, Cu, Cr, Ni, Mo and Fe, described each component content is that C0.01%, Mn0.90%, Si0.10%, P0.01%, S0.01%, AlS0.015%, Cu0.01%, Cr0.01%, Ni0.01%, Mo0.01% and all the other are Fe;
(2) steel plate of the steel of step (1) being made utilizes leveler to correct, and steel plate is carried out to leveling back and forth at least one times by leveler;
(3) the straight shaped steel of the steel of step (1) being made utilizes section-straightening machine to correct;
(4) again the steel of step (7) are assembled into hull by the mode of welding;
(5) steel are carried out to surperficial pre-cleaning: adopt raw MAT'L ball blast method, adopt the rotary blade of centrifugal shot-blasting machine that shot or other abrasive materials are high-speed projected on the surface of steel, the oxide skin of steel surface and iron rust are peeled off;
(6) steel of step (5) pre-cleaning are carried out to secondary rust removal, adopt segmentation shot-peening method, utilize the mobile pressurized air of airduct high speed that shot is ejected on surface of steel plate, rusty scale and oxide skin are peeled off;
(7) steel of step (6) are used into electroplating solution and electroplated, described electroplating solution comprises following composition: nickelous sulfate, nickelous sulfate nickel sulfamic acid, nickel chloride, boric acid, described solution temperature is 30 ℃, the density of electric current is to replace between 5 A/dm2 and 40A/dm2, alternate frequency is 20 times, wherein the time between low current and high electric current compares for 1:2, and electroplating time is 15min;
(8) steel that plated in step (7) are passed through through in sodium hydroxide solution, and dry after cleaning with clear water, temperature is controlled at 480 ℃;
(9) protective mulch: the steel surface of step (8) is coated to protective cover, and described protective cover is for first coating the anticorrosion waterproof layer of epoxy glass laminate, then coated in enamel anticorrosion with coat waterproof layer.
Steel plate in described step (2) is sheet steel, the leveler adopting is multiaxis leveler, band steel or fritter sheet material also can be corrected on plate straightening machine simultaneously, the band steel of same thickness or fritter sheet material are placed on to one as on the steel plate of liner, then by plate straightening machine, carry out at least one times back and forth leveling.
Steel plate in described step (2) is plate iron, adopts large-scale hydraulic press to carry out leveling at platform.
The concentration of electroplating solution composition in described step (4): concentration is that 120 g/L nickelous sulfates, concentration are that 280 g/L nickelous sulfate nickel sulfamic acids, concentration are that nickel chloride, the concentration of 15 g/L is the boric acid of 20 g/L.
Embodiment 2:
A manufacture method for anticorrosion hull, comprises the following steps:
(1) prepare the steel for the manufacture of hull, in described steel, contain C, Mn, Si, P, S, AlS, Cu, Cr, Ni, Mo and Fe, described each component content is that C0.18%, Mn1.60%, Si0.50%, P0.04%, S0.04%, AlS0.65%, Cu0.35%, Cr0.20%, Ni0.40%, Mo0.08% and all the other are Fe;
(2) steel plate of the steel of step (1) being made utilizes leveler to correct, and steel plate is carried out to leveling back and forth at least one times by leveler;
(3) the straight shaped steel of the steel of step (1) being made utilizes section-straightening machine to correct;
(4) again the steel of step (7) are assembled into hull by the mode of welding;
(5) steel are carried out to surperficial pre-cleaning: adopt raw MAT'L ball blast method, adopt the rotary blade of centrifugal shot-blasting machine that shot or other abrasive materials are high-speed projected on the surface of steel, the oxide skin of steel surface and iron rust are peeled off;
(6) steel of step (5) pre-cleaning are carried out to secondary rust removal, adopt segmentation shot-peening method, utilize the mobile pressurized air of airduct high speed that shot is ejected on surface of steel plate, rusty scale and oxide skin are peeled off;
(7) steel of step (6) are used into electroplating solution and electroplated, described electroplating solution comprises following composition: nickelous sulfate, nickelous sulfate nickel sulfamic acid, nickel chloride, boric acid, described solution temperature is 70 ℃, the density of electric current is to replace between 10 A/dm2 and 55A/dm2, alternate frequency is 30 times, wherein the time between low current and high electric current compares for 2:3, and electroplating time is 20min;
(8) steel that plated in step (7) are passed through through in sodium hydroxide solution, and dry after cleaning with clear water, temperature is controlled at 600 ℃;
(9) protective mulch: the steel surface of step (8) is coated to protective cover, and described protective cover is for first coating the anticorrosion waterproof layer of epoxy glass laminate, then coated in enamel anticorrosion with coat waterproof layer.
Steel plate in described step (2) is sheet steel, the leveler adopting is multiaxis leveler, band steel or fritter sheet material also can be corrected on plate straightening machine simultaneously, the band steel of same thickness or fritter sheet material are placed on to one as on the steel plate of liner, then by plate straightening machine, carry out at least one times back and forth leveling.
Steel plate in described step (2) is plate iron, adopts large-scale hydraulic press to carry out leveling at platform.
The concentration of electroplating solution composition in described step (4): concentration is that 250 g/L nickelous sulfates, concentration are that 360g/L nickelous sulfate nickel sulfamic acid, concentration are that nickel chloride, the concentration of 25 g/L is the boric acid of 20 g/L.
The present invention is with low cost, control step is simple, efficiency is high, and it is even to obtain product, withstanding corrosion, abrasion test, coating surface is smooth, be difficult for cracking, and first adopt the anticorrosion waterproof layer of epoxy glass laminate, Properties of Epoxy Resin is superior, mechanical strength is high, cohesive force is large, shrinkage percentage is little, the chemical mediators such as soda acid are had to certain stability, performance of watertightness is good, and environment friendly corrosion protection, the anticorrosion waterproof layer of rear employing ceramic glaze paint, nontoxic, double environment friendly corrosion protection, and coating surface smooth, glaze is full, there is good adhesive ability, resistance to abrasion and elasticity, suppress microbial reproduction growth simultaneously and destroy hull surface.
Finally it should be noted that, above embodiment is the non-limiting technical scheme in order to technical scheme of the present invention to be described only, those of ordinary skill in the art is to be understood that, those are modified or are equal to replacement technical scheme of the present invention, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. a manufacture method for anticorrosion hull, is characterized in that, comprises the following steps:
(1) prepare the steel for the manufacture of hull, in described steel, contain C, Mn, Si, P, S, AlS, Cu, Cr, Ni, Mo and Fe, described each component content is that C0.01 ~ 0.18%, Mn0.90 ~ 1.60%, Si0.10 ~ 0.50%, P0.01 ~ 0.04%, S0.01 ~ 0.04%, AlS >=0.015%, Cu0.01 ~ 0.35%, Cr0.01 ~ 0.20%, Ni0.01 ~ 0.40%, Mo0.01 ~ 0.08% and all the other are Fe;
(2) steel plate of the steel of step (1) being made utilizes leveler to correct, and steel plate is carried out to leveling back and forth at least one times by leveler;
(3) the straight shaped steel of the steel of step (1) being made utilizes section-straightening machine to correct;
(4) again the steel of step (7) are assembled into hull by the mode of welding;
(5) steel are carried out to surperficial pre-cleaning: adopt raw MAT'L ball blast method, adopt the rotary blade of centrifugal shot-blasting machine that shot or other abrasive materials are high-speed projected on the surface of steel, the oxide skin of steel surface and iron rust are peeled off;
(6) steel of step (5) pre-cleaning are carried out to secondary rust removal, adopt segmentation shot-peening method, utilize the mobile pressurized air of airduct high speed that shot is ejected on surface of steel plate, rusty scale and oxide skin are peeled off;
(7) steel of step (6) are used into electroplating solution and electroplated, described electroplating solution comprises following composition: nickelous sulfate, nickelous sulfate nickel sulfamic acid, nickel chloride, boric acid, described solution temperature is 30-70 ℃, the density of electric current is to replace between 5-10 A/dm2 and 40-55A/dm2, alternate frequency is 20-30 time, wherein the time between low current and high electric current compares for 1:2-2:3, and electroplating time is 15min-20min;
(8) steel that plated in step (7) are passed through through in sodium hydroxide solution, and dry after cleaning with clear water, temperature is controlled at 480-600 ℃;
(9) protective mulch: the steel surface of step (8) is coated to protective cover, and described protective cover is for first coating the anticorrosion waterproof layer of epoxy glass laminate, then coated in enamel anticorrosion with coat waterproof layer.
2. the manufacture method of a kind of anticorrosion hull according to claim 1, it is characterized in that: the steel plate in described step (2) is sheet steel, the leveler adopting is multiaxis leveler, band steel or fritter sheet material also can be corrected on plate straightening machine simultaneously, the band steel of same thickness or fritter sheet material are placed on to one as on the steel plate of liner, then by plate straightening machine, carry out at least one times back and forth leveling.
3. the manufacture method of a kind of anticorrosion hull according to claim 1, is characterized in that: the steel plate in described step (2) is plate iron, adopts large-scale hydraulic press to carry out leveling at platform.
4. the manufacture method of a kind of anticorrosion hull according to claim 1, is characterized in that: the concentration of electroplating solution composition in described step (4): concentration is that 120 g/L-250 g/L nickelous sulfates, concentration are that 280 g/L-360g/L nickelous sulfate nickel sulfamic acids, concentration are that nickel chloride, the concentration of 15 g/L-25 g/L is the boric acid of 20 g/L.
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| CN201410372457.5A CN104149933A (en) | 2014-07-31 | 2014-07-31 | Method for manufacturing anticorrosion ship hulls |
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| CN201410372457.5A CN104149933A (en) | 2014-07-31 | 2014-07-31 | Method for manufacturing anticorrosion ship hulls |
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Citations (4)
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|---|---|---|---|---|
| JPH04202784A (en) * | 1990-11-30 | 1992-07-23 | Nkk Corp | Method for manufacturing iron-zinc alloy coated steel sheet having multiple iron-zinc alloy plating layers with excellent electrodeposition coating properties and workability |
| CN1099429A (en) * | 1993-06-29 | 1995-03-01 | 日本钢管株式会社 | Surface treated steel sheet and method therefor |
| CN103276297A (en) * | 2013-06-09 | 2013-09-04 | 嘉兴市新纪元钢管制造有限公司 | Self-connecting type and high-strength seamless steel tube for rope coring drill rod, as well as manufacturing method thereof |
| CN103703156A (en) * | 2011-07-29 | 2014-04-02 | 新日铁住金株式会社 | High-strength zinc-plated steel sheet and high-strength steel sheet having superior moldability, and method for producing each |
-
2014
- 2014-07-31 CN CN201410372457.5A patent/CN104149933A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04202784A (en) * | 1990-11-30 | 1992-07-23 | Nkk Corp | Method for manufacturing iron-zinc alloy coated steel sheet having multiple iron-zinc alloy plating layers with excellent electrodeposition coating properties and workability |
| CN1099429A (en) * | 1993-06-29 | 1995-03-01 | 日本钢管株式会社 | Surface treated steel sheet and method therefor |
| CN103703156A (en) * | 2011-07-29 | 2014-04-02 | 新日铁住金株式会社 | High-strength zinc-plated steel sheet and high-strength steel sheet having superior moldability, and method for producing each |
| CN103276297A (en) * | 2013-06-09 | 2013-09-04 | 嘉兴市新纪元钢管制造有限公司 | Self-connecting type and high-strength seamless steel tube for rope coring drill rod, as well as manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 许友林等: "船舶防腐蚀技术应用及其发展", 《中国修船》 * |
| 韩恩厚等: "海洋工程结构与船舶的腐蚀防护——现状与趋势", 《中国材料进展》 * |
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Application publication date: 20141119 Assignee: JIANGSU YICHUN WUJIAZUI SHIPBUILDING INDUSTRY CO., LTD. Assignor: Nanjing Wu Jiazui shipbuilding company limited Contract record no.: 2015320000061 Denomination of invention: Method for manufacturing anticorrosion ship hulls License type: Exclusive License Record date: 20150317 |
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Assignee: JIANGSU YICHUN WUJIAZUI SHIPBUILDING INDUSTRY CO., LTD. Assignor: Nanjing Wu Jiazui shipbuilding company limited Contract record no.: 2015320000061 Date of cancellation: 20180408 |
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