CN101698189B - Zinc-galvanizing and paint-spraying coating process for submerged boat carrier - Google Patents
Zinc-galvanizing and paint-spraying coating process for submerged boat carrier Download PDFInfo
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- CN101698189B CN101698189B CN200910019294.1A CN200910019294A CN101698189B CN 101698189 B CN101698189 B CN 101698189B CN 200910019294 A CN200910019294 A CN 200910019294A CN 101698189 B CN101698189 B CN 101698189B
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Abstract
The invention discloses a zinc-galvanizing and paint-spraying coating process for a submerged boat carrier, which comprises the following steps of: (1) sand blasting treatment for a base material; (2) hot zinc-galvanizing treatment; (3) roughening treatment for a zinc-galvanized layer; (4) spraying a base paint; and (5) spraying a finish paint. In the process, a workpiece is subjected to zinc galvanizing, and a zinc layer is an anode coating which has a function of electrochemical protection; by the hot zinc-galvanizing treatment for the base material, the corrosion resistance of the product is greatly improved; the sand blasting treatment for the base material before the zinc-galvanizing treatment, the natural cooling treatment after the zinc-galvanizing treatment and the sand blasting treatment before paint spraying respectively improve the adhesive force between the base material and the zinc layer, and between the zinc layer and the paint, and guarantee the surface quality; and the surface of the zinc-galvanized workpiece is sprayed with the antirust paint so as to effectively protect the base material, prevent rust and corrosion, prolong the service life and meet requirements on special working environment of the submerged boat carrier and other large-scale mechanical parts.
Description
Technical field
The present invention relates to a kind of Zinc-galvanizing and paint-spraying coating process, particularly a kind of zinc-galvanizing and paint-spraying coating process, belongs to vehicle spraying technology field.
Background technology
Submerged boat carrier is the transport vehicle of designing and developing in recent years, can carry out underwater operation, transports ship, vehicle in seawater.Due to the particularity of working environment, the durability of submerged boat carrier main parts size (vehicle frame, wheel hub, oil cylinder etc.) and long-lasting and antirust, anticorrosive measure become important topic.
At present, conventional anti-corrosion measure adopts electrogalvanizing method, but the zinc coating thickness that such technology obtains little, be not suitable for large-scale component; Another kind of anti-corrosion measure is at workpiece surface spraying antirust paint, but its service life is low, can not meet equally long-acting antirust, etch-proof needs.Above-mentioned two kinds of traditional rust resistance and corrosion resistance measures, all can not meet under particular surroundings, protection ground, the need of work increasing the service life.
Summary of the invention
For the deficiency of prior art; technical problem to be solved by this invention is: a kind of zinc-galvanizing and paint-spraying coating process is provided; the object that reach effective protection workpiece ground, antirust, anticorrosion, increases the service life, meets the needs of the large scale machine parts particular surroundings operations such as submerged boat carrier.
For solving the problems of the technologies described above, the technical solution used in the present invention is that a kind of zinc-galvanizing and paint-spraying coating process, comprises the following steps:
(1) ground sanding processing;
(2) heat dip zinc treating;
(3) to the processing of zinc-impregnating layer hacking;
(4) priming paint spraying;
(5) finish paint spraying.
Above-mentioned zinc-galvanizing and paint-spraying coating process, comprises following content:
(1) ground sanding processing: after car load has welded, its assembly is gone to sanding room and carry out sanding, make each surface reach Sa2.5 grade standard; In this process, compressed air pressure is 0.5～0.6MPa; Shot diameter: 1.2～1.5mm; Shot hardness HV400～500; Nozzle diameter: 4～6mm;
(2) heat dip zinc treating: assembly after treatment sanding is carried out to heat dip zinc treating, and the minimum thickness of parts zinc-impregnating layer is 100um, soaks after zinc naturally cooling;
(3) sanding is carried out in parts zinc-impregnating layer surface and process again, strengthen zinc-impregnating layer surface roughness; When processing, compressed air pressure is 0.2～0.3MPa, shot diameter 0.8～1.0mm;
(4) priming paint spraying: steel sand, the dust of parts zinc-impregnating layer remained on surface to be sprayed are removed with compressed air, then used sticky cloth wiping all surface, remove the small floating dust on surface; Then spray priming paint twice at parts zinc-impregnating layer surface uniform, must not have drain spray, grinning effect, per pass film thickness is 20-25 μ m, and paint film gross thickness is not less than 40 μ m;
(5) finish paint spraying: spray paint after priming paint bone dry; Before finish paint spraying, first with 400# sand paper, priming paint is polished, and then use 600# sand papering, then dip degreaser by all surface wiping with cleansing tissue, finally use adhesive rag wiping, remove small floating dust; Evenly twice finish paint of spraying, must not have drain spray, grinning effect, and per pass film thickness is 25-30 μ m, and paint film gross thickness is not less than 50 μ m;
Above-mentioned zinc-galvanizing and paint-spraying coating process, wherein:
Priming paint is epoxy zinc rich primer, the two component priming paint taking epoxy resin and polyamide as base-material, as: Qing Daohai builds the HJ100 that Chemical Co., Ltd. produces;
Finish paint is aliphatic polyurethane top coat, taking aliphatic isocyanates and containing the acrylic resin of alkyl as base-material, and be equipped with the two component polyurethane finish paint of the composition such as weather-proof color, auxiliary agent, as: Qing Daohai builds the HJ500 that Chemical Co., Ltd. produces.
Zinc-galvanizing and paint-spraying coating process of the present invention, first soaks zinc by workpiece, and zinc layer is anode coating, can play electro-chemical protection, by the heat dip zinc treating to ground, has greatly improved the corrosion resistance of product; Soak the ground sanding processing before zinc, soak naturally cooling after zinc, the sanding processing before paint spraying, has improved respectively the adhesive force of ground and zinc layer, zinc layer and paint, has ensured surperficial quality; Carry out again the spraying of antirust paint soaking zinc surface of the work, met the needs of the large scale machine parts particular surroundings operations such as submerged boat carrier.
Meanwhile, select corresponding supporting paint in conjunction with different environments for use, finally ensured the quality of paint film, meet user demand.The finish paint of selecting, in paint film, zinc content is high, has cathodic protection performance, and fast drying has excellent adhesive force, wearability, impact resistance and excellent antiseptic property.The priming paint of selecting, paint film is tough and tensile, good decorative property, have excellent weather-proof, protect light, colour retention, and there is excellent chemical-resistant and resistance to water.The object that uses this technique can reach effective protection ground, antirust, anticorrosion, increase the service life.
Detailed description of the invention
Embodiment 1
1, coating process step:
(1) ground sanding processing.After car load has welded, its assembly is gone to sanding room and carry out sanding.Compressed air pressure is 0.5MPa, and shot diameter is 1.5mm, and shot hardness is HV400; Nozzle diameter is 4mm, and each surface reaches Sa2.5 grade standard.
(2) heat dip zinc treating.Assembly after treatment sanding is carried out to heat dip zinc treating.The minimum thickness that zinc parts are soaked in requirement is 100um, and zinc-impregnating layer is evenly smooth, and surface does not have obvious disadvantage, soaks after zinc naturally cooling.
(3) to the processing of zinc-impregnating layer hacking.Because the surface after zinc-plated is very smooth, after spraying priming paint, adhesive force is affected, and therefore requires that zinc coat is carried out to sanding and processes, requirement compressed air pressure is 0.2MPa, shot diameter: 1.0mm, soaks zinc surface roughness as principle to strengthen, and zinc layer must not be removed.
(4) priming paint spraying.With compressed air by the steel sand of remained on surface to be sprayed, dusts etc. are removed, then with sticky cloth to all surface wiping, remove the small floating dust on surface, require priming paint spraying twice, per pass film thickness is 20 μ m, paint film gross thickness must not be less than 40 μ m, spraying evenly, must not have drain spray, and grinning effect exists.
(5) finish paint spraying.After priming paint bone dry, carry out the spraying of finish paint.Before finish paint spraying, first with 400# sand paper, priming paint is polished, and then use 600# sand papering, then dip degreaser by all surface wiping with cleansing tissue, finally use adhesive rag wiping, remove small floating dust.Finish paint requires spraying twice, and per pass film thickness is 30 μ m, and paint film gross thickness must not be less than 50 μ m, spray evenly completely, must not have drain spray, grinning effect existence.
2. selected paint kind:
In the spraying type of paint, through the test to existing paint, use epoxy zinc rich primer and aliphatic polyurethane top coat, can reach satisfied effect.
(1) epoxy zinc rich primer, the two component priming paint taking epoxy resin and polyamide as base-material, as: Qing Daohai builds the HJ100 that Chemical Co., Ltd. produces; In paint film, zinc content is high, has cathodic protection performance, and fast drying has excellent adhesive force, wearability, impact resistance and excellent antiseptic property.
(2) aliphatic polyurethane top coat, taking aliphatic isocyanates and containing the acrylic resin of alkyl as base-material, and be equipped with the two component polyurethane finish paint of the composition such as weather-proof color, auxiliary agent, as: Qing Daohai builds the HJ500 that Chemical Co., Ltd. produces; Paint film is tough and tensile, good decorative property, have excellent weather-proof, protect light, colour retention, and there is excellent chemical-resistant and resistance to water.
Embodiment 2
1, coating process step:
(1) ground sanding processing.After car load has welded, its assembly is gone to sanding room and carry out sanding.Compressed air pressure is 0.6MPa, shot diameter: 1.2mm, shot hardness HV500; Nozzle diameter: 6mm, each surface reaches Sa2.5 grade standard.
(2) heat dip zinc treating.Assembly after treatment sanding is carried out to heat dip zinc treating.The minimum thickness that zinc parts are soaked in requirement is 100um, and zinc-impregnating layer is evenly smooth, and surface does not have obvious disadvantage, soaks after zinc naturally cooling.
(3) to the processing of zinc-impregnating layer hacking.Because the surface after zinc-plated is very smooth, after spraying priming paint, adhesive force is affected, and therefore requires that zinc coat is carried out to sanding and processes, requirement compressed air pressure is 0.3MPa, shot diameter: 0.8mm, soaks zinc surface roughness as principle to strengthen, and zinc layer must not be removed.
(4) priming paint spraying.With compressed air by the steel sand of remained on surface to be sprayed, dusts etc. are removed, then with sticky cloth to all surface wiping, remove the small floating dust on surface, require priming paint spraying twice, per pass film thickness is 25 μ m, paint film gross thickness must not be less than 40 μ m, spraying evenly, must not have drain spray, and grinning effect exists.
(5) finish paint spraying.After priming paint bone dry, carry out the spraying of finish paint.Before finish paint spraying, first with 400# sand paper, priming paint is polished, and then use 600# sand papering, then dip degreaser by all surface wiping with cleansing tissue, finally use adhesive rag wiping, remove small floating dust.Finish paint requires spraying twice, and per pass film thickness is 25 μ m, and paint film gross thickness must not be less than 50 μ m, spray evenly completely, must not have drain spray, grinning effect existence.
2. selected paint kind:
In the spraying type of paint, through the test to existing paint, use epoxy zinc rich primer and aliphatic polyurethane top coat, can reach satisfied effect.
(1) epoxy zinc rich primer, the two component priming paint taking epoxy resin and polyamide as base-material, as: Qing Daohai builds the HJ100 that Chemical Co., Ltd. produces; In paint film, zinc content is high, has cathodic protection performance, and fast drying has excellent adhesive force, wearability, impact resistance and excellent antiseptic property.
(2) aliphatic polyurethane top coat, taking aliphatic isocyanates and containing the acrylic resin of alkyl as base-material, and be equipped with the two component polyurethane finish paint of the composition such as weather-proof color, auxiliary agent, as: Qing Daohai builds the HJ500 that Chemical Co., Ltd. produces; Paint film is tough and tensile, good decorative property, have excellent weather-proof, protect light, colour retention, and there is excellent chemical-resistant and resistance to water.
Embodiment 3
1, coating process step:
(1) ground sanding processing.After car load has welded, its assembly is gone to sanding room and carry out sanding.Compressed air pressure is 0.55MPa, shot diameter: 1.4mm, shot hardness HV450; Nozzle diameter: 5mm, each surface reaches Sa2.5 grade standard.
(2) heat dip zinc treating.Assembly after treatment sanding is carried out to heat dip zinc treating.The minimum thickness that zinc parts are soaked in requirement is 100um, and zinc-impregnating layer is evenly smooth, and surface does not have obvious disadvantage, soaks after zinc naturally cooling.
(3) to the processing of zinc-impregnating layer hacking.Because the surface after zinc-plated is very smooth, after spraying priming paint, adhesive force is affected, and therefore requires that zinc coat is carried out to sanding and processes, requirement compressed air pressure is 0.25MPa, shot diameter: 0.9mm, soaks zinc surface roughness as principle to strengthen, and zinc layer must not be removed.
(4) priming paint spraying.With compressed air by the steel sand of remained on surface to be sprayed, dusts etc. are removed, then with sticky cloth to all surface wiping, remove the small floating dust on surface, require priming paint spraying twice, per pass film thickness is 23 μ m, paint film gross thickness must not be less than 40 μ m, spraying evenly, must not have drain spray, and grinning effect exists.
(5) finish paint spraying.After priming paint bone dry, carry out the spraying of finish paint.Before finish paint spraying, first with 400# sand paper, priming paint is polished, and then use 600# sand papering, then dip degreaser by all surface wiping with cleansing tissue, finally use adhesive rag wiping, remove small floating dust.Finish paint requires spraying twice, and per pass film thickness is 28 μ m, and paint film gross thickness must not be less than 50 μ m, spray evenly completely, must not have drain spray, grinning effect existence.
2. selected paint kind:
In the spraying type of paint, through the test to existing paint, use epoxy zinc rich primer and aliphatic polyurethane top coat, can reach satisfied effect.
(1) epoxy zinc rich primer, the two component priming paint taking epoxy resin and polyamide as base-material, as: Qing Daohai builds the HJ100 that Chemical Co., Ltd. produces; In paint film, zinc content is high, has cathodic protection performance, and fast drying has excellent adhesive force, wearability, impact resistance and excellent antiseptic property.
(2) aliphatic polyurethane top coat, taking aliphatic isocyanates and containing the acrylic resin of alkyl as base-material, and be equipped with the two component polyurethane finish paint of the composition such as weather-proof color, auxiliary agent, as: Qing Daohai builds the HJ500 that Chemical Co., Ltd. produces; Paint film is tough and tensile, good decorative property, have excellent weather-proof, protect light, colour retention, and there is excellent chemical-resistant and resistance to water.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, variation, remodeling, interpolation or the replacement made, all should belong to protection scope of the present invention.
Claims (2)
1. a zinc-galvanizing and paint-spraying coating process, comprises the following steps and content:
(1) ground sanding processing: after car load has welded, its assembly is gone to sanding room and carry out sanding; Compressed air pressure is 0.5～0.6MPa, shot diameter: 1.2～1.5mm, and shot hardness HV400～500, nozzle diameter: 4～6mm, each surface reaches Sa2.5 grade standard;
(2) heat dip zinc treating: assembly after treatment sanding is carried out to heat dip zinc treating; The minimum thickness that zinc parts are soaked in requirement is 100 μ m, soaks after zinc naturally cooling;
(3) to the processing of zinc-impregnating layer hacking: because the surface after zinc-plated is very smooth, after spraying priming paint, adhesive force is affected, therefore require that zinc coat is carried out to sanding and process, requiring compressed air pressure is 0.2～0.3MPa, shot diameter: 0.8～1.0mm;
(4) priming paint spraying: by the steel sand of remained on surface to be sprayed, dust is removed with compressed air, then with sticky cloth to all surface wiping, remove the small floating dust on surface, require priming paint spraying twice, per pass film thickness is 20-25 μ m, and paint film gross thickness must not be less than 40 μ m;
(5) finish paint spraying: carry out the spraying of finish paint after priming paint bone dry; Before finish paint spraying, first with 400# sand paper, priming paint is polished, and then use 600# sand papering, then dip degreaser by all surface wiping with cleansing tissue, finally use adhesive rag wiping, remove small floating dust; Finish paint requires spraying twice, and per pass film thickness is 25-30 μ m, and paint film gross thickness must not be less than 50 μ m.
2. zinc-galvanizing and paint-spraying coating process according to claim 1, wherein:
Priming paint is epoxy zinc rich primer, the two component priming paint taking epoxy resin and polyamide as base-material;
Finish paint is aliphatic polyurethane top coat, taking aliphatic isocyanates and containing the acrylic resin of alkyl as base-material, and be equipped with the two component polyurethane finish paint of the composition such as weather-proof color, auxiliary agent.
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| CN200910019294.1A CN101698189B (en) | 2009-10-16 | 2009-10-16 | Zinc-galvanizing and paint-spraying coating process for submerged boat carrier |
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| CN200910019294.1A CN101698189B (en) | 2009-10-16 | 2009-10-16 | Zinc-galvanizing and paint-spraying coating process for submerged boat carrier |
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