CN105618349A - Paint coating process - Google Patents

Abstract

The invention discloses a paint coating process. The process includes the following steps of material obtaining, paint mixing, clean grinding, derusting, grinding, deoiling, undercoat spraying, putty pasting, conducting of the next procedure, self-inspection, preparation of varnish, preparation of finishing coat, sanding, red hole filling putty pasting, floating coat spraying and sanding. According to the process, the procedures are reasonably and coordinately arranged, the rejection rate can be effectively decreased, and product quality is high.

Description

A kind of paint coating process

Technical field

The present invention relates to paint coating process.

Background technology

There is processing step phenomenon inharmonious, irrational in existing paint coating process, produces sometimes to repeat to process or excess processes, have a strong impact on product quality, and percent defective is higher, require higher to employee's operant skill, cause product cost higher.

Additionally existing paint coating process processing step is tediously long, and the distribution of each operation exists many irrational places.

Summary of the invention

In order to realize the purpose of the present invention, the present invention provides the paint coating process that a kind of procedure arrangement is reasonable, coordinate.

For solving above-mentioned technical problem, the present invention adopts the following technical scheme that

A kind of paint coating process, comprises the steps:

1), technological process: eye ash �� middle painting �� sand papering is filled out in neck material �� paint �� cleaning polishing �� rust cleaning �� polishing �� oil removing �� priming paint �� scraping with atomic ash �� Song Xia road �� self-inspection �� varnish �� finish paint �� sand papering �� scrape redness;

2), technological parameter:

2.1) relative humidity of environment to control below 50%, and optimum ambient temperature is at 18 DEG C-25 DEG C;

2.2) selecting relatively fine sandpaper (600#--800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

2.3) prime 2��3 roads, finish paint 2��3 road; The every layer thickness of primer coating is 20��30 ��m; The every layer thickness of topcoat is 25��35 ��m, and gross thickness is 40��50 ��m;

2.4) low-viscosity dope, nozzle diameter 1��1.5mm; High viscosity coating, nozzle diameter 2��3mm; The relation of painted object and nozzle: spray little area, nozzle diameter 1��1.5mm; Spraying large area, nozzle diameter 2.5��3mm;

2.5) spraying air pressure: 0.35��0.7mpa(is 3��6kg/c about)

2.6) general spray base is 200��300mm;

3), application front surface processes

3.1) must remove clean by being coated with the impurity such as the welding slag on surface, spatter thing, overlap, burr, greasy dirt before application;

3.2) selecting waterproof abrasive paper (600#---800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

3.3) clean and select banana oil to clean, must wash clean, it is impossible to have residue; Natural air drying;

4), primer spray

Notice that spray base 200��300mm, spraying rate are medium, at the uniform velocity spray; Spraying to overlap, and in layer carries out in order, and priming, it is uniform and thin to require; Conventional priming paint has metal conditioner, epoxy primer, red lead anticorrosive primer etc.; (parkerized rete outward appearance is lark, and phosphating coat surface ordinary circumstance is without sand paper hacking);

5), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

6), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

7), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

8), dry: natural airing: be put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

9), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

10), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

11), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

12), dry:

12.1) natural airing: being put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

12.2) baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

13), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete; Baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

14), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete;

15), sand papering

Polishing, uses #800 liquid honing, and surface must polish smooth;

Technique sand paper is applied: mill putty P120��280; Mill floating coating P600��800; Mill varnish is resprayed P1000��1200; Flour milling paint waxing P1500; Acryl facet corase grind P200��400; Acryl topcoating paint P800;

16), finish paint

Paint: 4:1 allotment generally pressed by paint and firming agent, and the paint such as viscosity for different cultivars is excessive, is transferred to desirable application viscosity with matched diluent, stirs and be finally filtered to remove impurity; Finish paint spraying 2-3 road, between every layer, flow time is 10MIN, to guarantee that in coating, solvent fully volatilizees, dried film thickness 40-50 ��m; Dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H;

17), varnish

Coating varnish allotment ratio: main, Gu, rare: 5:2:1-2; Dried film thickness 20-30 ��m, dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H.

Procedure arrangement of the present invention is reasonable, coordination, it is possible to be effectively reduced percent defective and product quality is high.

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described:

A kind of paint coating process, comprises the steps:

1), technological process: eye ash �� middle painting �� sand papering is filled out in neck material �� paint �� cleaning polishing �� rust cleaning �� polishing �� oil removing �� priming paint �� scraping with atomic ash �� Song Xia road �� self-inspection �� varnish �� finish paint �� sand papering �� scrape redness;

2), technological parameter:

2.1) relative humidity of environment to control below 50%, and optimum ambient temperature is at 18 DEG C-25 DEG C;

2.2) selecting relatively fine sandpaper (600#--800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

2.3) prime 2��3 roads, finish paint 2��3 road; The every layer thickness of primer coating is 20��30 ��m; The every layer thickness of topcoat is 25��35 ��m, and gross thickness is 40��50 ��m;

2.4) low-viscosity dope, nozzle diameter 1��1.5mm; High viscosity coating, nozzle diameter 2��3mm; The relation of painted object and nozzle: spray little area, nozzle diameter 1��1.5mm; Spraying large area, nozzle diameter 2.5��3mm;

2.5) spraying air pressure: 0.35��0.7mpa(is 3��6kg/c about)

2.6) general spray base is 200��300mm;

3), application front surface processes

3.1) must remove clean by being coated with the impurity such as the welding slag on surface, spatter thing, overlap, burr, greasy dirt before application;

3.2) selecting waterproof abrasive paper (600#---800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

3.3) clean and select banana oil to clean, must wash clean, it is impossible to have residue; Natural air drying;

4), primer spray

Notice that spray base 200��300mm, spraying rate are medium, at the uniform velocity spray; Spraying to overlap, and in layer carries out in order, and priming, it is uniform and thin to require; Conventional priming paint has metal conditioner, epoxy primer, red lead anticorrosive primer etc.; (parkerized rete outward appearance is lark, and phosphating coat surface ordinary circumstance is without sand paper hacking);

5), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

6), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

7), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

8), dry: natural airing: be put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

9), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

10), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

11), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

12), dry:

12.1) natural airing: being put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

12.2) baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

13), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete; Baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

14), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete;

15), sand papering

Polishing, uses #800 liquid honing, and surface must polish smooth;

Technique sand paper is applied: mill putty P120��280; Mill floating coating P600��800; Mill varnish is resprayed P1000��1200; Flour milling paint waxing P1500; Acryl facet corase grind P200��400; Acryl topcoating paint P800;

16), finish paint

Paint: 4:1 allotment generally pressed by paint and firming agent, and the paint such as viscosity for different cultivars is excessive, is transferred to desirable application viscosity with matched diluent, stirs and be finally filtered to remove impurity; Finish paint spraying 2-3 road, between every layer, flow time is 10MIN, to guarantee that in coating, solvent fully volatilizees, dried film thickness 40-50 ��m; Dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H;

17), varnish

Coating varnish allotment ratio: main, Gu, rare: 5:2:1-2; Dried film thickness 20-30 ��m, dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H.

Claims (1)

1. a paint coating process, comprises the steps:

1), technological process: eye ash �� middle painting �� sand papering is filled out in neck material �� paint �� cleaning polishing �� rust cleaning �� polishing �� oil removing �� priming paint �� scraping with atomic ash �� Song Xia road �� self-inspection �� varnish �� finish paint �� sand papering �� scrape redness;

2), technological parameter:

2.1) relative humidity of environment to control below 50%, and optimum ambient temperature is at 18 DEG C-25 DEG C;

2.2) selecting relatively fine sandpaper (600#--800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

2.3) prime 2��3 roads, finish paint 2��3 road; The every layer thickness of primer coating is 20��30 ��m; The every layer thickness of topcoat is 25��35 ��m, and gross thickness is 40��50 ��m;

2.4) low-viscosity dope, nozzle diameter 1��1.5mm; High viscosity coating, nozzle diameter 2��3mm; The relation of painted object and nozzle: spray little area, nozzle diameter 1��1.5mm; Spraying large area, nozzle diameter 2.5��3mm;

2.5) spraying air pressure: 0.35��0.7mpa(is 3��6kg/c about)

2.6) general spray base is 200��300mm;

3), application front surface processes

3.1) must remove clean by being coated with the impurity such as the welding slag on surface, spatter thing, overlap, burr, greasy dirt before application;

3.2) selecting waterproof abrasive paper (600#---800#) polishing after polishing machine polishing, the roughness caused after polishing is no more than 51 ��m;

3.3) clean and select banana oil to clean, must wash clean, it is impossible to have residue; Natural air drying;

4), primer spray

Notice that spray base 200��300mm, spraying rate are medium, at the uniform velocity spray; Spraying to overlap, and in layer carries out in order, and priming, it is uniform and thin to require; Conventional priming paint has metal conditioner, epoxy primer, red lead anticorrosive primer etc.; (parkerized rete outward appearance is lark, and phosphating coat surface ordinary circumstance is without sand paper hacking);

5), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

6), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

7), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

8), dry: natural airing: be put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

9), scraping with atomic ash

Puttying is smooth for ensureing smooth surface, the defect such as hole that simultaneously product fill motional collision produces and sand holes, scrapes the added time and wants conscientious, must not leak and scrape; Blade coating carries out in the same direction, must not roundtrip operation; Should scraping relatively thin, dried putty is not allow for coming off, slight crack every time; Must not there is tacky, bottom drain phenomenon existence after drying;

10), polishing putty: polishing putty, smooth with 600# liquid honing, and with air gun, polishing break flour cleaned out;

11), middle painting

Spray floating coating, the same primer spray of technique; Company is coated with typically by Soviet Union's ash scholar's priming paint; Floating coating 2-3 time; Thickness 30��40 ��m;

12), dry:

12.1) natural airing: being put on display rack by workpiece natural air drying, summer generally wants more than 4 hours, and winter time to be grown;

12.2) baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

13), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete; Baking priming paint, the baking temperature in middle level and time; 80 DEG C of 30 ~ 40MIN of the baking of priming paint and intermediate layer paint or room temperature are placed 8-24H and are polished;

14), scrape redness and fill out eye ash

Scraping red ash, it is therefore an objective to fill up sand holes and the putty polished off, therefore this work item operation can not be impetuous, and leakage is found out in carefulness, fills up complete;

15), sand papering

Polishing, uses #800 liquid honing, and surface must polish smooth;

Technique sand paper is applied: mill putty P120��280; Mill floating coating P600��800; Mill varnish is resprayed P1000��1200; Flour milling paint waxing P1500; Acryl facet corase grind P200��400; Acryl topcoating paint P800;

16), finish paint

Paint: 4:1 allotment generally pressed by paint and firming agent, and the paint such as viscosity for different cultivars is excessive, is transferred to desirable application viscosity with matched diluent, stirs and be finally filtered to remove impurity; Finish paint spraying 2-3 road, between every layer, flow time is 10MIN, to guarantee that in coating, solvent fully volatilizees, dried film thickness 40-50 ��m; Dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H;

17), varnish

Coating varnish allotment ratio: main, Gu, rare: 5:2:1-2; Dried film thickness 20-30 ��m, dry: 80 DEG C, 30-40MIN is dried or room temperature places 8-24H.