CN103894329A - Method for spraying surface of engineering machinery covering part - Google Patents

Method for spraying surface of engineering machinery covering part Download PDF

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Publication number
CN103894329A
CN103894329A CN201410100588.8A CN201410100588A CN103894329A CN 103894329 A CN103894329 A CN 103894329A CN 201410100588 A CN201410100588 A CN 201410100588A CN 103894329 A CN103894329 A CN 103894329A
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China
Prior art keywords
spraying
processes
construction machinery
paint
finish paint
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CN201410100588.8A
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Chinese (zh)
Inventor
黄晓鹏
万芳新
杨传家
吴劲锋
同长虹
贺志洋
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Gansu Agricultural University
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Gansu Agricultural University
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Priority to CN201410100588.8A priority Critical patent/CN103894329A/en
Publication of CN103894329A publication Critical patent/CN103894329A/en
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Abstract

The invention provides a method for spraying the surface of an engineering machinery covering part. Before a complete machine is assembled, spraying of parts covering the surface of a machine body is finished, and assembling of the complete machine is then performed. The method for spraying the surface of the engineering machinery covering part includes the specific steps of surface preprocessing, primer spraying, primer drying, puttying, finish paint spraying, finish paint drying and polishing. The method is characterized in that a corrosion-resisting coating is sprayed after surface preprocessing and before primer spraying. According to the method for spraying the surface of the engineering machinery covering part, the spraying efficiency of the covering part can be improved, the spraying quality is guaranteed, the dosage of primer is reduced, and the number of times of spraying finish paint is reduced.

Description

A kind of method of Processes for Covering Parts of Construction Machinery surface spraying
Technical field
The present invention relates to a kind of covering material surface spraying method, relate to specifically a kind of Processes for Covering Parts of Construction Machinery surface spraying method.
Background technology
Engineering machinery is a kind of machinery of outwork, long term exposure is worked under the adverse circumstances such as atmosphere and different quality out of doors, and all bearing the corrosion in various degree of different geographical and environment all the time, thereby various " chronic diseases " and " frequently-occurring disease " of engineering machinery are caused.Engineering machinery surface spraying is an important step in construction machinery product manufacturing process.Antirust, corrosion protection coating quality is one of importance of product total quality.Overall engineering machine presentation quality has not only reflected product protection, decorate properties, and is the key factor that forms value of the product.In the production of Practical Project engineering goods and use procedure, often because Processes for Covering Parts of Construction Machinery surface spraying is off quality, cause the surface damages such as construction machinery product covering material surface pull-away or scratch, need to be to the processing of doing over again of these surfaces, expend a large amount of time and production cost, cause this unnecessary loss of volume.Equally, Processes for Covering Parts of Construction Machinery surface spraying is only paid attention to appearance, and the inherent quality of despising bottom, in use there is the series of problems such as face coat comes off, burn into acidifying in result, thereby has a strong impact on engineer machinery operation and Famous Construction Machinery Manufacturers man's reputation.Find out thus, Processes for Covering Parts of Construction Machinery surface spraying quality can't neglect, and surface spray coating process performance need further improves.Therefore, Processes for Covering Parts of Construction Machinery surface spraying is a technical barrier urgently to be resolved hurrily.
Summary of the invention
The invention provides. a kind of method of Processes for Covering Parts of Construction Machinery surface spraying, can improve covering spray efficiency and guarantee the quality of spraying, can strengthen that covering is anticorrosive, antiwear property, reduce the consumption of priming paint and reduced the number of times of spray paint.
For solving above technical problem, the invention provides following technical scheme: a kind of method of Processes for Covering Parts of Construction Machinery surface spraying, before assembling complete machine, first by complete the parts spraying of mulch-laying machine surface, then carry out final assembly.
The concrete steps of spraying method comprise: surface preparation, priming paint spraying, priming paint oven dry, Puttying, finish paint spraying, finish paint are dried and polishing, it is characterized in that, after surface preparation, before priming paint spraying, spray corrosion-resistant finishes; The material of described corrosion-resistant finishes is alloy powder; Described alloy powder is Ni60.The spraying method of described corrosion-resistant finishes is flame-spraying, and flame spray is apart from being 200mm, and coating thickness is 2mm.
Further, the bake out temperature of described priming paint is 120 ℃.
Further, the weight ratio of described priming paint and curing agent is 4:1.
Further, the weight ratio of described finish paint and curing agent is 4:1.
Further, the spraying number of times of described finish paint is that twice, two minor tick is dried and baking.
Further, described finish paint bake out temperature is 70 ℃.
The above is specific as follows:
1, surface preparation, removes surperficial grease, oxide skin and other dirts.Covering is placed on to shot blast room and carries out grinding process, then covering material surface is cleaned with phosphate.
2, corrosion-resistant finishes spraying, the pretreated covering of effects on surface sprays anticorrosive, abrasion resistance alloy powder, to form, covering material surface is had to defencive function.
3, priming paint spraying, adopts electrostatic hand gun, and this spraying method has the high feature of spray efficiency.
4, priming paint is dried, hot air circulation convection type, and its great advantage is for drying or baking evenly.
5, Puttying, the raw material of employing is atomized ash, its have curing rate fast, can polish, the advantage such as effects on surface powder metallurgy adhesive force is better, intensity is high, difficult drop-off.
6, finish paint spraying, first sprays baking-type mass-tone finish paint, after spray again the color-bar finish paint of bi-component.Reduce and dry number of times, improve quality and the efficiency of drying.
7, finish paint is dried and polishing, and hot air circulation convection type dries or bakes evenly.
The method of this Processes for Covering Parts of Construction Machinery surface spraying the present invention relates to, beneficial effect is as follows:
1. the present invention, for Processes for Covering Parts of Construction Machinery surface spraying, sprays assembling again by parts and replaces traditional complete machine spraying, has significantly improved covering spray efficiency and the quality of guaranteeing spraying.
2. the present invention is after covering material surface pretreatment, effects on surface sprays alloy powder, between priming paint and alloy powder, there is larger adhesive force, not only increased that covering is anticorrosive, antiwear property, and reduced the consumption of priming paint and reduced the number of times of spray paint.Meanwhile, the alloy powder of spraying is with low cost.
3. technique of the present invention has reduced spray paint oven dry number of times afterwards, and whole covering material surface spraying coating process is simplified, and has improved spraying coating process efficiency.
The specific embodiment
Elaborate whole spraying process below.
surface preparation:
Surface preparation, object is to remove the grease of covering material surface, oxide skin and other dirts.This processing method is: first the position rubber stoppers such as the machining hole on covering, screwed hole, machined surface are blocked, in order to avoid these holes or machined surface are broken by steel sand in Shot Blasting process.Then by suspender, covering is transported to super shot blasting cleaning chamber, regulate super shot blasting cleaning chamber processing time, steel sand jet velocity, pill casting wheel rotating speed, steel sand impact energy, throw the buttons such as steel sand amount, shot-blasting machine power, effective current, no-load current, full-load current, finally start super shot blasting cleaning chamber play button.The steel sand that utilizes shot-blasting machine to spray at a high speed from different spaces angle is beaten on covering, to reach the dirts such as rust cleaning, oxide skin.The Shot Blasting time: 5 minutes; Steel sand diameter used: 2mm; Steel sand jet velocity: 30m/s; Pill casting wheel rotating speed: 2000r/min; Steel sand impact energy: 0.4mV 2; Throw steel sand amount: 115KG/min; Shot-blasting machine power: 7.5KW; Effective current: 9A; No-load current: 5A; Full-load current: 14A; Ball blast surface cleanness and roughness: Sa2; Covering material surface is without visible grease and dirt, and oxide skin and iron rust are removed substantially.
Covering material surface phosphate after ball blast cleans: object is to remove surface residue and the sightless grease of naked eyes and dirt and can form to prevent oxidized acidifying film.The cleaning agent using is for without phosphorus powder sodium phosphate trimer, adding 1t concentration is 30%(m/m) add in the purge tank of 3t without phosphorus powder sodium tripolyphosphate solution, then add water that to adjust its concentration be 20%(m/m), and stir, keeping cleaning temperature is 25 ℃, and scavenging period is 10min.Water rinses again, and dries in air.Covering material surface now forms acidifying diaphragm, can prevent that in a short time covering material surface is oxidized in air.
corrosion-resistant finishes spraying:
The spraying of corrosion-resistant finishes, object is to form certain thickness anticorrosive, the abrasion resistance coating that has at covering material surface.The raw material of coating spraying: nickel base self-fluxing alloy powder, i.e. Ni60 alloy powder, this coating has protection against oxidation film; fusing point is lower, and self-dissolving slagability is good, strong to the wetting power of multiple matrix and WC particle; coating good toughness, thermal spraying, spray welding process function admirable.Comprehensive because of its coating performance, there is excellent corrosion resistance, wearability, and also cheap, so apply at present quite extensive on market.The technological parameter of coating spraying: Ni60 alloy powder hardness: 60HRC; Spraying method: flame-spraying (simple to operate, and moderate); Flame spray distance: 200mm; Coating thickness: 2mm.This technique is that the number of times of spray paint technique minimizing spray paint has played vital effect.
spraying priming paint
Spraying priming paint, priming paint is one of crucial link of surface spraying, its effects on surface plays the effects such as sealing, isolation, protection against the tide, the selection of priming paint is most important, it should be combined closely with surface, form fine and close composite coating, the effect that play anticorrosion, improves face coat tack with upper strata paint again.Priming paint spraying coating process process is:
1, the material material of priming paint is selected; that comprehensive priming paint technological requirement priming paint raw material has is heat-resisting, anticorrosive, resistance to wear, the better feature such as viscosity; select EP-12 epoxy resin as priming paint raw material; because of in EP-12 epoxy resin; in film, zinc content is higher; have the effects such as good cathodic protection, excellent adhesive force, and EP-12 epoxy resin product is easy to get, price is comparatively cheap compared with other priming paint raw material.
2, the selection of curing agent, curing agent is the rate of drying that increases priming paint hardness and promote priming paint.In this technique, curing agent is selected diethylenetriamine; Facts have proved that it has quick increase priming paint hardness and rate of drying effect, and this material price is also comparatively cheap.
3, preparation proportioning, is that 4:1 prepares by EP-12 epoxy resin and curing agent according to weight ratio, and the demoulding time is 5 hours; Solidification temperature is 20 ℃, and be 10 hours hardening time.
4, spraying process, at normal temperatures, pass through suspender, the equipment such as driving are placed on the covering of handling well in paint spray booth, again the primer base preparing is poured in electrostatic gun, manually boot gun controls button, adopt and replace in length and breadth spraying method, from high to low, from left to right, from inside outwards order is sprayed on coating on covering material surface, in spraying process, spray gun must keep vertical with the angle of covering, and spray gun and covering material surface distance are 20cm, according to the translational speed of spray gun and coating rate of drying, environment temperature, dope viscosity is relevant, the translational speed of spray gun is that 30cm/s evenly moves, the pressure adjustable pressure of spraying is to 0.4MPa, the film thickness of spraying is 0.15 μ m, after priming paint spraying, use suspender, driving is delivered to hot wind drying room by covering again dries.
priming paint is dried:
Priming paint is dried, and by suspender, driving, the covering after priming paint spraying is transported to hot wind drying room, and the object of oven dry is to improve the performance such as adhesive force and heat resistance of priming paint and covering material surface.Hot wind drying room is equipped with two wind energy conversion systems that hot blast is provided, wind speed is 25cm/s, adopt hot air circulation convective principles that covering material surface priming paint is dried, bake out temperature need to reach 120 ℃, and in drying course, need to constantly adjust the position of covering, to reach the object of even oven dry, dry until 2h, touch covering material surface with hand, if sensory surface priming paint has and stickyly just carries out drying and processing 1h again.After drying and processing the priming paint surface of gained without bubble phenomenon, hand over that viscosity is large, adhesive force is high, resistance to water is stronger.Finally, carry out visual examination: with magnifying glass observe priming paint surface-brightening, smooth, do not allowed oil mark etc., and blibbing quantity≤3, bubble diameter≤1mm, solidify rear surface without obvious finger-marks, under 4KV high pressure, under 3.5mA electric current, priming paint surface is without punch-through.
puttying:
Puttying, object is in order to fill up rugged position in priming paint surface, the overall leveling on maintenance priming paint surface and smooth, is step important in covering material surface coating process.Raw material used is HL-2 atomized ash (unsaturated polyester resin putty), and this raw material is not only originated easily, cost is low, and heat-resisting, shock resistance, corrosion resistance are good.With the curing agent of its configuration be sodium peroxide, thereby be deployed into conveniently two novel pointing patching materials of component of one.Concrete allotment parameter is mixing ratio (weight ratio), atomized ash host: curing agent=100:2.Technical process, scrapes the atomized ash painting modulating on the priming paint surface after polishing with scraper, needs thick-layer to be coated with and scrapes, repeatedly thin scraping to thickness 0.1 μ m.When painting is scraped, there is Bubble formation, need to thoroughly strike off with scraper, to guarantee good adhesive force.After scraped finish, carry out the polishing of 30min water mill, and then carry out 2h dry grinding and process, the last thin scraping with atomic ash of blade coating to be to fill and lead up tiny defect, at 25 ℃ of temperature, then sprays display layer and polishing checks tiny defect, then remake follow-up spraying, dry and can finally polish for 30 minutes.
finish paint spraying:
Finish paint spraying, finish paint is also one of crucial link of surface spraying, its objective is and improves surface scratch resistance, hardness, gloss, transparency, resistance to ag(e)ing etc.Its effects on surface plays the effects such as sealing, isolation, protection against the tide, and the selection of finish paint is also vital, and it should be closely integrated into fine and close composite coating with bottom surface, plays again surface anticorrosive, improves the effect of face coat tack.Meanwhile, the quality of finish paint directly affects the quality of whole paint, has the function of decorative appearance.Finish paint spraying coating process process is:
1, the material of finish paint is selected, and comprehensive finish paint technological requirement finish paint raw material is the same with priming paint, also to have heat-resisting, anticorrosive, resistance to wear, the better feature such as viscosity, but finish paint has the requirement of better color and luster.This process choice polyurethane is as finish paint raw material, because of excellent mechanical performances such as it has with substrate bonding excellent performance, resistance to wears, resistance to deflection, anti-aging, resistance to fungi is good, it also possess cold resistance good, ventilative, can wash, easy to process, price is excellent honest and clean.Meanwhile, also play and improve gloss, viscosity and the several functions such as wear-resisting.
2, the selection of curing agent, curing agent is drying time, hardness, the durability that increases finish paint.In this technique, curing agent is selected aromatic isocyanate; Facts have proved that it has quick increase finish paint hardness, durability effect, and this material price is also comparatively cheap.
3, the selection of diluent, the object of dilution is to regulate finish paint viscosity, so that the operations such as brushing, spraying improve stability, the increase finish paint adhesive force of paint storage and reduce finish paint surface skining.Select dimethylbenzene as diluent, because it has good dissolubility, volatilizees and go out and noresidue material with the rate of drying of film from film polyurethane finish, and can well mix with dimethylbenzene diluent.Dimethylbenzene this as a little less than colourless transparent liquid, toxicity, price comparison is cheap.4, preparation proportioning, is that 4:1:1 prepares by former polyurethane paint and curing agent, diluent according to weight ratio, and uniform stirring.The demoulding time is 6 hours; Solidification temperature is 20 ℃, and be 10 hours hardening time, is diluted to concentration 20%, and dilution viscosity is 30sec.
5, spraying process, first by paint spray booth's dedusting, then is stained with degreasing agent by clean cloth, and wiping coating surface, to remove the foreign material such as oil content, dirt, finally does last dust removal process with adhesive fabric.By the equipment such as suspender, driving, the surface preparation of handling well, priming paint, oven dry, Puttying covering are placed in finish paint paint spray booth, again the finish paint coating preparing is poured in electrostatic gun, manually boot gun controls button, adopt and replace in length and breadth spraying method, from high to low, from left to right, from inside outwards order is sprayed on coating on covering material surface, first spray baking-type mass-tone finish paint, after spray again the color-bar finish paint of bi-component.Hand spray wind speed is 0.5m/s; Air themperature is 25 ℃.In spraying process, spray gun must keep vertical with the angle of covering, and spray gun and covering material surface distance are 20cm, relevant according to the translational speed of spray gun and coating rate of drying, environment temperature, dope viscosity, the translational speed of spray gun is that 30cm/s evenly moves, and the pressure adjustable pressure of spraying is to 0.4MPa, build: the film thickness of 0.10 μ m spraying is 0.20 μ m, after spraying, after standing and drying 10min, 60 ℃ are toasted 40min.
Spray paint again, spraying method or according to spraying method alternately in length and breadth, from high to low, from left to right, order from inside outwards, first spray baking-type mass-tone finish paint, after spray again the color-bar finish paint of bi-component.In spraying process, find to occur the tiny flaws such as pore for the second time, just repeat spraying in these regions, until tiny flaw disappears completely.Hand spray wind speed is 0.5m/s; Air themperature is 25 ℃, spray gun must keep vertical with the angle of covering, and spray gun and covering material surface distance are 20cm, now spray gun translational speed is that 25cm/s evenly moves, the pressure adjustable pressure of spraying is to 0.35MPa, and build is 0.10 μ m, and the film thickness of spraying is 0.15 μ m, after spraying, after standing and drying 10min, 60 ℃ are toasted 30min.After spraying altogether twice finish paint, after priming paint spraying with suspender, drive a vehicle and again covering delivered to hot wind drying room and dry.
finish paint is dried and polishing:
Finish paint is dried and polishing, adopts hot air circulation convection type, and surface is dried or be evenly roasting.Drying plant is hot wind drying room; Bake out temperature is 70 ℃; Drying time is 12 hours; Dry object and be obtain finish paint surface without bubble phenomenon, hand over that viscosity is large, adhesive force is high, resistance to water, resistance to acids and bases are stronger.
Finish paint stoving process process is, by suspender, driving, the covering after finish paint spraying is transported to hot wind drying room, hot wind drying room is equipped with two wind energy conversion systems that hot blast is provided, regulating the wind speed of wind energy conversion system is 20cm/s, adopt hot air circulation convective principles that covering material surface finish paint is dried, bake out temperature need to reach 70 ℃, and in drying course, need to constantly adjust the position of covering, to reach the object of even oven dry, dry until 12h, touch covering material surface with hand, if sensory surface priming paint has and stickyly just carries out drying and processing 2h again.After drying and processing the finish paint surface of gained without bubble phenomenon, hand over that viscosity is large, adhesive force is high, resistance to water is stronger.After drying and processing, the finish paint to dry is needed to slight polishing or polishing, inhomogeneous to obtain desirable gloss and to eliminate enamelled coating.Finally, visual examination: with magnifying glass observe priming paint surface-brightening, smooth, do not allowed oil mark etc., and blibbing quantity≤2, bubble diameter≤1mm, solidify rear surface without obvious finger-marks, under 6KV high pressure, under 5.0mA electric current, face surface is without punch-through; The hydrochloric acid that is 30% in concentration or sodium hydroxide solution soak 24 hours, and the corrosion-free phenomenon in finish paint surface produces; Hardness test, Pencil with 2B hardness adds 1kgf to 45 ° of directions 5mm that paddles, and does not scratch vestige; Glossiness >=90%.
The specific embodiment of the present invention does not form the restriction to the application's scope; every within the spirit and principle of the present invention design, any modification that one of skill in the art can make, be equal to and replace and within improvement etc. all should be included in protection scope of the present invention.

Claims (10)

1. a method for Processes for Covering Parts of Construction Machinery surface spraying, is characterized in that, before assembling complete machine, first by complete the parts spraying of mulch-laying machine surface, then carries out final assembly.
2. according to claim 1. a kind of method of Processes for Covering Parts of Construction Machinery surface spraying, the concrete steps of spraying method comprise: surface preparation, priming paint spraying, priming paint oven dry, Puttying, finish paint spraying, finish paint are dried and polishing, it is characterized in that, after surface preparation, before priming paint spraying, spray corrosion-resistant finishes.
3. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that,
The material of described corrosion-resistant finishes is alloy powder.
4. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 3, is characterized in that, described alloy powder is Ni60.
5. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: the spraying method of described corrosion-resistant finishes is flame-spraying, and flame spray is apart from being 200mm, and coating thickness is 2mm.
6. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: the bake out temperature of described priming paint is 120 ℃.
7. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: the weight ratio of described priming paint and curing agent is 4:1.
8. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: the weight ratio of described finish paint and curing agent is 4:1.
9. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: the spraying number of times of described finish paint is that twice, two minor tick is dried and baking.
10. the method for a kind of Processes for Covering Parts of Construction Machinery surface spraying according to claim 2, is characterized in that: described finish paint bake out temperature is 70 ℃.
CN201410100588.8A 2014-03-18 2014-03-18 Method for spraying surface of engineering machinery covering part Pending CN103894329A (en)

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
CN104831123A (en) * 2015-05-26 2015-08-12 广东电网有限责任公司电力科学研究院 Anticorrosion coating, powder raw materials thereof and production method and application of anticorrosion coating
CN104889037A (en) * 2015-05-18 2015-09-09 安徽中能电气股份有限公司 Paint spraying process of cabinet body plate of power distribution cabinet
CN105665262A (en) * 2016-04-12 2016-06-15 安徽昌永得机械有限公司 Coating wet-spraying wet process for engineering machinery
CN106040514A (en) * 2016-06-22 2016-10-26 安徽天富泵阀有限公司 Brushing method of chemical pump body paint
CN106378294A (en) * 2016-08-30 2017-02-08 宁波科镭汽车零部件有限公司 Automobile part spray coating process
CN106423798A (en) * 2016-09-30 2017-02-22 宁波东昊汽车部件有限公司 Dustproof automobile air outlet and manufacturing process
CN107134340A (en) * 2017-07-05 2017-09-05 深圳市金核科技股份有限公司 A kind of antifreeze plate with diaphragm and preparation method
CN108176567A (en) * 2017-12-28 2018-06-19 合肥和安机械制造有限公司 A kind of vacuum static electricity coating process
CN108220866A (en) * 2016-12-22 2018-06-29 无锡金科涂装有限公司 Spraying method
CN108327655A (en) * 2018-02-28 2018-07-27 太仓鸿恩电子科技有限公司 A kind of streamlined high-strength vehicle central control panel and its spraying process
US20200161047A1 (en) * 2017-04-19 2020-05-21 Advanced Technology & Materials Co., Ltd. Method for preparing rare earth permanent magnet material
CN112024338A (en) * 2020-08-07 2020-12-04 伊恩斯国际新材料技术(北京)有限公司 Method for spraying zinc by using environment-friendly super-corrosion-resistant new material
CN112354828A (en) * 2020-10-10 2021-02-12 仪征常众汽车部件有限公司 Coating method for automobile body covering part

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* Cited by examiner, † Cited by third party
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CN104889037A (en) * 2015-05-18 2015-09-09 安徽中能电气股份有限公司 Paint spraying process of cabinet body plate of power distribution cabinet
CN104831123A (en) * 2015-05-26 2015-08-12 广东电网有限责任公司电力科学研究院 Anticorrosion coating, powder raw materials thereof and production method and application of anticorrosion coating
CN105665262A (en) * 2016-04-12 2016-06-15 安徽昌永得机械有限公司 Coating wet-spraying wet process for engineering machinery
CN106040514A (en) * 2016-06-22 2016-10-26 安徽天富泵阀有限公司 Brushing method of chemical pump body paint
CN106378294B (en) * 2016-08-30 2019-07-23 宁波科镭汽车零部件有限公司 A kind of spraying process of automobile parts
CN106378294A (en) * 2016-08-30 2017-02-08 宁波科镭汽车零部件有限公司 Automobile part spray coating process
CN106423798A (en) * 2016-09-30 2017-02-22 宁波东昊汽车部件有限公司 Dustproof automobile air outlet and manufacturing process
CN108220866A (en) * 2016-12-22 2018-06-29 无锡金科涂装有限公司 Spraying method
US20200161047A1 (en) * 2017-04-19 2020-05-21 Advanced Technology & Materials Co., Ltd. Method for preparing rare earth permanent magnet material
CN107134340A (en) * 2017-07-05 2017-09-05 深圳市金核科技股份有限公司 A kind of antifreeze plate with diaphragm and preparation method
CN108176567A (en) * 2017-12-28 2018-06-19 合肥和安机械制造有限公司 A kind of vacuum static electricity coating process
CN108327655A (en) * 2018-02-28 2018-07-27 太仓鸿恩电子科技有限公司 A kind of streamlined high-strength vehicle central control panel and its spraying process
CN112024338A (en) * 2020-08-07 2020-12-04 伊恩斯国际新材料技术(北京)有限公司 Method for spraying zinc by using environment-friendly super-corrosion-resistant new material
CN112354828A (en) * 2020-10-10 2021-02-12 仪征常众汽车部件有限公司 Coating method for automobile body covering part

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