What are the importance of grinding process in furniture, paint and coatings? How to choose sand paper in grinding process? Answer: as the saying goes: "10 painter, three points in the sand", the importance of grinding in painting in the visible. Grinding process mainly has three major functions:
For the substrate is to remove the burr on the base surface, oil, dust and so on;
The surface for the scratch putty, the general surface is rough, need to get through grinding the flat surface, thus grinding can reduce surface roughness effect;
Enhancing adhesion of coating. Before spraying new paint, it is necessary to polish the old paint film after work. Because the coating is bad on the surface of over smooth surface, the mechanical adhesion of coating can be enhanced after grinding.
In doing open wood or solid wood veneer furniture, generally do not scrape painted transparent putty, in order to avoid wood eyes filled dead, can not open the effect of furniture. Nitrocellulose putty (one component), the use of no need to add curing agent, and class PU (two-component) putty, when used, need to add curing agent. Putty can be directly according to the requirements of good brushing or scraping putty, generally two times better, after 4 hours of hard work after scraping burnished, then coated with transparent primer, this can reduce the number of application of transparent primer, reduce the infiltration of depression, help improve the fullness, reduce the cost. If it is not directly on the slab putty spraying transparent primer, primer is transparent by Mukong endosmotic, spraying times still difficult to fill the wood hole, the time-consuming, cost increase.
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