Quality inspection standards for 9 processes of customized whole wood paint workshop
Guide: All painting processes shall be carried out in strict accordance with the provisions of the painting process. The color plate or the first sample shall be used for color matching. The process flow or processing standard (especially the paint ratio) shall not be changed at will. Inspection Standard of Paint Workshop All painting processes shall be carried out in strict accordance with the provisions of the paint process. The color plate or the first sample shall be used for color matching. The process flow or processing standard (especially the paint ratio) shall not be changed at will.
1： Blank inspection 1. Check whether the surface is not cleaned with glue, exposed nails, threading nails, etc. 2. Whether there are blisters, overlaps, sand penetration, scratches, degumming, large seams, lack of material or chipping, wavy lines or uneven surfaces on the pasted products. 3. Whether the milling part is complete, whether the sanding is in place and whether there is deformation. 4. Check whether the product joint is uneven, whether there are hammer marks, knife marks, wavy lines, whether the lines are smooth, and whether the product is not allowed to have obvious deformation. (Customized home network: dingzhijiang) 5. In case of any defective product processing, it is necessary to timely pick out the product and notify the previous process or the department to complete the processing. It is not allowed to continue processing the defective product, which affects the final quality of the product. 2： The white blank grinding shall pay attention to the surface nail hole, defect, crack and other defects according to the product characteristics, and the water-based filling soil shall be filled fully after proper color mixing, without missing filling, so as not to affect the quality of finished products. 1. The sandpaper model shall be used reasonably from coarse to fine (180 #, 240 #), and shall not exceed two levels. 2. Sanding shall be conducted along the wood grain. Irreversible sand, horizontal sand, sand deformation, sand leakage, sand penetration or sand exposure of the bottom material shall be conducted. The surface shall be flat and smooth. The carving and wire strip shall be polished in place smoothly without burrs and unevenness. 3. All adhesive watermarks on the front and four sides of the interface shall be treated. If there are cracks at the splice, they must be treated before painting. 4. The worktable shall be clean and tidy without hard objects or particles to avoid scratching the product. 5. The product shall be handled with care and shall not be dragged on the product surface. There shall be no foreign matters between panels. 6. The fillets must be smoothed without sharp corners and burrs. Before painting, all products must be subject to good rough and fine grinding, and the dust must be removed. The surface must be flat and smooth, and the appearance of the components should be free of obvious defects. The dust should be blown clean. Carving, lines, dead corners, etc. should be polished in place and cleaned in place to keep the products fresh. After fine grinding, the hands should not be rough. If there is any undesirable phenomenon, it must be handled before subsequent processing. 3： If the color of the product substrate is inconsistent, the color of the product shall be changed before painting, and then the next process can be started. 4： Wipe the color with a wool brush. After brushing the color remover on the product, use a rag to wipe it evenly along the texture, and clean it without sagging. The next process can be carried out within one hour in summer and three hours in winter. 5： Brush oil 1. Mix according to the proportion specified by the company, spray evenly in place, and thick coat the product parts once. (Customized home network: dingzhijiang) 2. It can be polished after being dried for more than 4 hours. 3. Use 240 # – 320 # sandpaper to polish along the direction of wood grain, which is required to be polished in place, smooth and flat, with no burr or undercut at the line, and no perforation is allowed. 6： Primer 1. It shall be prepared in strict accordance with the proportion specified by the paint company and shall not be prepared at will. 2. When spraying the primer, there shall be no sagging, uneven spraying, bubbles, missing spraying and other phenomena. (Customized home network: dingzhijiawang) 3. When spraying for many times, the interval time should be enough (PU paint is generally more than 2 hours, NC paint is generally more than 1 hour) to polish, and the bottom layer should be fully dry. 4. The parts without edge sealing are not allowed to expose the plates, and the primer must be sprayed in place. 7： Polish 1. The primer can be polished only after it is fully dry. The specification of sandpaper for polishing is 180 #. Before operation, check whether there is any defective paint. (such as pinholes, oil flow, etc., and grinding in place without perforation) The lines and arcs shall be smooth without burrs and other undesirable phenomena. 2. 180 # sandpaper for machine grinding or hand grinding (120 # sandpaper can be used for PE paint products). 3. The product shall be polished in place, and the product shall be flat, with smooth lines and radians. 8： Second grinding 1. Use 240 #, 320 #, 400 # and 600 # sandpaper respectively, first coarse and then fine. 2. It is required that the product shall be flat and smooth, with smooth lines, and the dead corners of carving shall be polished in place. The surface shall be free of such defects as grinding machine marks, sand marks, pits, sags, cracks, etc. 9： Finish paint 1. The proportion of color paint shall be strictly in accordance with the company’s proportion during color repair, and random operation is not allowed. 2. For color trimming, the first piece must be made and confirmed as qualified before batch processing. 3. Before color repair, all accessories shall be polished and dedusted in place, and they can be processed only after they are confirmed to be qualified, so as to avoid rework after color repair. 4. The operation method shall be correct, the color shall be trimmed evenly, and the construction shall be carried out in strict accordance with the color plate or the first sample. There shall be no color bleeding, color blooming and other phenomena. 5. The color plate shall be used to align the product parallel to the wood grain, and the overall color shall be consistent with the color plate or the first sample without obvious color difference. 6. Edges, lines and dead corners shall be trimmed in place without white, light color, etc. 7. The proportion of finish paint shall be strictly in accordance with the company’s proportion, and random operation is not allowed. 8. The spraying must be uniform without missing spraying or fault. The paint film must be full, with good leveling property, and the gloss shall be consistent with the company’s requirements. 9. The front side of the product requires that the product feel flat and smooth, without whitening, orange peel, pinhole, sagging, particle and other coating defects.
