Acceptance must-have mixed oil brushing common problems

Mixed oil painting is a construction project that is technically and technically very strong. The quality varies greatly. It is necessary to operate in strict accordance with standard procedures to ensure quality. Therefore, in the acceptance of mixed oil brushing, the color of the brushing surface is the same and there is no trace of brush marks. No peeling, leaking brush, anti-rust, whitening, bottoming, falling, wrinkling, wrapping and color are allowed. The defects such as unevenness, pull line inspection decoration line, color line straight, error is less than 1 mm, used to touch the paint surface is smooth, no block feel, wood adjacent hardware, glass and walls clean, no traces of oil.
Common oil quality problems and treatment methods
(1) Top Paint Brushing: The common quality problems of top paint painting include bottom penetration, anti-alkali, cracking, and uneven coating. 1 through the bottom: The main reason is that the grassroots improper handling and paint too thin, caused by lack of hiding power, the prevention and treatment method is to clean up the oil, rust, etc. when the grassroots treatment, the construction of the paint to adjust the consistency is appropriate, if thinned It can be solved by increasing the number of brushings.
2 Anti-alkali: Mainly because of the dampness of the base layer, the top base must be dry before it can be painted. If there is anti-alkali, it should be reworked and repaired. When the grass is dry, puttying will be done and the painting operation will be carried out.
3 cracking: it is due to putty shrinkage. The main reason is that before the construction, the putty was not completely dry and the putty was scraped again. The second time the putty was not dried, the paint was applied, causing cracking in the back layer of the putty. The construction should wait for the putty to dry again and then scrape it again. The thickness of the putty should not exceed 2 mm. Rework and repair should be scraped first cracked, and then putty scraper, putty and then painted finish.
4 The top is not smooth: The main reason is that in addition to the unsatisfactory base treatment, the paint is too thick and the thickness of the coating is also an important reason. In addition to the prevention and treatment methods, the primary treatment must be smooth and clean, and the consistency of the paint adjustment during construction should be appropriate. The paint brush should be thin every time to prevent accumulation. When repairing, leveling can be done with fine sandpaper.
(2) Mixed oil brushing on wood surface: The common quality defects of brushed oil on wood surface include falling, brushing, bleed, blistering, wrinkles, and rough coating, among which falling, brushing, wrinkles and coating The causes of rough film and its treatment methods are basically the same as that of varnishes, which can be solved by referring to the methods provided by the clean oil construction section. Focus here to solve the problem of blistering and bleeding.
1 Foaming: It is caused by the high moisture content of wood or the wood itself containing oil, especially when the big core board is directly painted and mixed with oil. In addition, the construction environment is too high, the surface of the wood is dry, and the inner layer is not yet dry, it is also an important reason to brush the oil again. During the construction, it is necessary to ensure that the wood is dry and completely removes the grease from the wood. During the operation, it is necessary to wait until the upper layer of the coating is completely dry before painting. When repairing, air bubbles should be removed and the bottom layer should be cleaned. After drying, brush 107 glue and putty putty. After the putty is dry, apply a brush to the surface.
(2) Bleeding: Mainly due to the penetration of dyestuffs in the wood, the penetration of the wood grease or the deeper color of the bottom layer than the surface layer. The method of prevention and treatment is that during construction, the color of the surface layer should be deeper than the bottom layer, and the parts with high dye and lignin content in the wood, such as thrift, must be sealed with the paint film. If bleed occurs, polish the paint before repairing, and then paint again.

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