阅读说明：本技术 一种电气柜板材喷塑工艺 (Plastic spraying process for electrical cabinet plate ) 是由 孙国强 卢双佳 林献品 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种电气柜板材喷塑工艺,包括如下步骤：A)尺寸预处理；B)表面预处理；C)喷塑前处理；D)喷塑；E)固化；F)喷塑后处理和G)成品检测和修补,与现有技术相比,本发明设计合理,喷塑工艺简单,便于操作实施的同时,得到的喷塑涂层的质量稳定可靠,具有良好的防腐蚀、耐刮擦和装饰性能。(The invention discloses a plastic spraying process for a plate of an electrical cabinet, which comprises the following steps: A) size pretreatment; B) surface pretreatment; C) plastic spraying pretreatment; D) spraying plastics; E) curing; F) and G) finished product detection and repair, compared with the prior art, the invention has the advantages of reasonable design, simple plastic spraying process, convenient operation and implementation, stable and reliable quality of the obtained plastic spraying coating, and good corrosion resistance, scraping resistance and decorative performance.)

1. The electrical cabinet plate plastic spraying process is characterized by comprising the following steps: the method comprises the following steps:

A) size pretreatment: detecting defects of the plate raw materials, selecting plates without defects, cutting the plate raw materials according to the size of the plate raw materials according to the processing requirements, and reserving the plate raw materials after cutting;

B) surface pretreatment: placing the cut plate in a working groove for degreasing, primary washing, derusting, secondary washing and drying, removing oil stains and iron rust on the surface of the plate, and drying for later use;

C) plastic spraying pretreatment: uniformly coating conductive putty on the clean and dry plate, after the putty is dried, grinding the plate by using abrasive paper, and sticking the part which does not need to be subjected to plastic spraying by using protective glue according to the actual plastic spraying requirement for later use;

D) spraying plastics: placing the plate subjected to the plastic spraying pretreatment in a high-voltage electrostatic field, grounding the plate, spraying the prepared plastic spraying coating on the plate by using a powder spraying gun connected to a negative electrode, and preheating the plate before plastic spraying if the room temperature is too low so as to ensure the thickness of the coating;

E) and (3) curing: the plate after plastic spraying is sent into drying equipment at the temperature of 180-200 ℃ for drying, the plastic spraying coating is solidified, and after drying is finished, the plate is taken out and cooled for later use;

F) and (3) carrying out posttreatment of plastic spraying: taking out the protective adhesive on the surface of the plate after the curing is finished, and flattening burrs on the coating for later use;

G) and (3) finished product detection and repair: and (3) detecting the coating defects of the plate subjected to the plastic spraying post-treatment, and if the plate with the defects of missing spraying, pinholes, collision damage, bubbles, agglomeration and the like is detected, repairing or spraying the plastic again on the plate.

2. The electrical cabinet plate plastic spraying process of claim 1, wherein: the defect detection in the step A) comprises surface defect detection of the plate and internal defect detection of the plate, wherein the surface defect detection adopts a visual detection device, and the internal defect detection adopts an ultrasonic defect detection device.

3. The electrical cabinet plate plastic spraying process of claim 1, wherein: and B), washing with pure water at the flow speed of 5-10m/s for 10-15min, wherein the temperature of the pure water is room temperature.

4. The electrical cabinet plate plastic spraying process of claim 1, wherein: and D), preheating the plate by adopting a constant-temperature heating box in the step D), wherein the preheating temperature is 20-30 ℃, and the preheating time is 25-30 min.

5. The electrical cabinet plate plastic spraying process of claim 1, wherein: the plastic spraying coating in the step D) is prepared by blending titanium dioxide, styrene-acrylic emulsion, epoxy acrylic emulsion, ethylene glycol, polyvinyl alcohol glue, alkyd varnish, polyvinyl acetate emulsion, tributyl phosphate, methyl silicone oil and resin pigment color paste.

6. The electrical cabinet plate plastic spraying process of claim 5, wherein: the plastic spraying coating comprises the following components in parts by weight: 8-12 parts of titanium dioxide, 8-12 parts of styrene-acrylic emulsion, 10-15 parts of epoxy acrylic emulsion, 6-9 parts of ethylene glycol, 8-12 parts of polyvinyl alcohol glue, 9-14 parts of alkyd varnish, 12-18 parts of polyvinyl acetate emulsion, 2-5 parts of tributyl phosphate, 2-5 parts of methyl silicone oil and a proper amount of resin pigment color paste.

7. The electrical cabinet plate plastic spraying process of claim 1, wherein: the drying equipment in the step E) is a constant-temperature wind-heat drying box, and the drying time is 7-12h according to the thickness of the coating.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of metal surface treatment, in particular to a plastic spraying process for an electrical cabinet plate.

[ background of the invention ]

The paint is a general name of materials which are applied to the surface of an object and can form a tough protective film, the building paint is an important class of paint, and the paint used for spraying plastics on buildings, exterior walls, ceilings, floors and toilets is generally called building paint in China. Plastic spraying is a surface treatment method for spraying plastic powder on parts. Spraying plastics is electrostatic powder spraying coating which is often said by us.

The said multi-colour spraying plastics paint is composed of incompatible two-phase components, in which one phase of dispersion medium is continuous phase and another phase is dispersed phase, and when it is coated, it can obtain luxurious, beautiful and multi-colour pattern by means of one-step spraying. The plastic spraying is to utilize an electrostatic generator to charge plastic powder, the plastic powder is adsorbed on the surface of an iron plate or other products, then the plastic powder is baked at 180-220 ℃ to be melted and adhered on the surface of metal or other objects, the plastic spraying products are mostly used for boxes used indoors, and a paint film has a flat or matte effect. In order to meet the requirements of corrosion resistance, scratch resistance and decoration on the surface of an electric cabinet, a plastic spraying process for the electric cabinet plate is needed to be provided.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides a plastic spraying process for an electrical cabinet plate, which has the advantages of reasonable design, simple plastic spraying process, convenience in operation and implementation, stable and reliable quality of an obtained plastic spraying coating, and good corrosion resistance, scraping resistance and decoration performance.

In order to achieve the purpose, the invention provides a plastic spraying process for an electrical cabinet plate, which comprises the following steps:

A) size pretreatment: detecting defects of the plate raw materials, selecting plates without defects, cutting the plate raw materials according to the size of the plate raw materials according to the processing requirements, and reserving the plate raw materials after cutting;

B) surface pretreatment: placing the cut plate in a working groove for degreasing, primary washing, derusting, secondary washing and drying, removing oil stains and iron rust on the surface of the plate, and drying for later use;

C) plastic spraying pretreatment: uniformly coating conductive putty on the clean and dry plate, after the putty is dried, grinding the plate by using abrasive paper, and sticking the part which does not need to be subjected to plastic spraying by using protective glue according to the actual plastic spraying requirement for later use;

D) spraying plastics: placing the plate subjected to the plastic spraying pretreatment in a high-voltage electrostatic field, grounding the plate, spraying the prepared plastic spraying coating on the plate by using a powder spraying gun connected to a negative electrode, and preheating the plate before plastic spraying if the room temperature is too low so as to ensure the thickness of the coating;

E) and (3) curing: the plate after plastic spraying is sent into drying equipment at the temperature of 180-200 ℃ for drying, the plastic spraying coating is solidified, and after drying is finished, the plate is taken out and cooled for later use;

F) and (3) carrying out posttreatment of plastic spraying: taking out the protective adhesive on the surface of the plate after the curing is finished, and flattening burrs on the coating for later use;

G) and (3) finished product detection and repair: and (3) detecting the coating defects of the plate subjected to the plastic spraying post-treatment, and if the plate with the defects of missing spraying, pinholes, collision damage, bubbles, agglomeration and the like is detected, repairing or spraying the plastic again on the plate.

Preferably, the defect detection in the step a) includes surface defect detection of the sheet material and internal defect detection of the sheet material, the surface defect detection adopts a visual detection device, and the internal defect adopts an ultrasonic defect detection device.

Preferably, the first water washing and the second water washing in the step B) are washed by pure water with the flow rate of 5-10m/s, the washing time is 10-15min, and the temperature of the pure water is room temperature.

Preferably, the plate is preheated by a constant-temperature heating box in the step D), the preheating temperature is 20-30 ℃, and the preheating time is 25-30 min.

Preferably, the plastic spraying coating in the step D) is prepared by blending titanium dioxide, styrene-acrylic emulsion, epoxy acrylic emulsion, ethylene glycol, polyvinyl alcohol glue, alkyd varnish, polyvinyl acetate emulsion, tributyl phosphate, methyl silicone oil and resin pigment color paste.

Preferably, the plastic-spraying coating comprises the following components in parts by weight: 8-12 parts of titanium dioxide, 8-12 parts of styrene-acrylic emulsion, 10-15 parts of epoxy acrylic emulsion, 6-9 parts of ethylene glycol, 8-12 parts of polyvinyl alcohol glue, 9-14 parts of alkyd varnish, 12-18 parts of polyvinyl acetate emulsion, 2-5 parts of tributyl phosphate, 2-5 parts of methyl silicone oil and a proper amount of resin pigment color paste.

Preferably, the drying device in the step E) is a constant-temperature air-heating drying box, and the drying time is 7-12h according to the thickness of the coating.

The invention has the beneficial effects that: compared with the prior art, the invention has the advantages of reasonable design, simple plastic spraying process, convenient operation and implementation, stable and reliable quality of the obtained plastic spraying coating, and good corrosion resistance, scraping resistance and decorative performance.

[ detailed description ] embodiments