How to scrape car putty tutorial
等混合调制面成，主要用于填平已涂有底漆的凸凹不平的表面缺陷。 The putty is made of mixed pigments, driers,etc., and is mainly used to fill in uneven surface defects that have been coated with primer.
、间隙、细小的裂缝等缺陷，都可用腻子来弥补。 Defects such as, gaps, and small cracks on the metal surface can be made up with putty. The basic properties and common characteristics of various putties are that their viscosity can be adjusted with supporting solvents. Their film formation is hard, their adhesion is strong, and they have good scratching, sanding, abrasion resistance and fineness. They are dry. high speed.
Putty must have a good binding force with the undercoat layer and the top surface coating, and the amount of paint absorbed is small, and its color and the color of the paint must not affect each other. After the putty coating is polished, it can become a smooth and flat surface with a certain coating thickness and a certain roughness within the allowable coating size range.
表面及，获得与良好部件表面相同的、具有良好的保护性与装饰性的涂层外观。 As a special kind of paint, putty to a large extent makes up for various defects on the surface of the coating, expands the application range of the coating, and makes many surfaces that require coating and have various defects on the surface. , with the same protective surface and good decorative appearance as the surface of good parts.
For the surface of the coated object with less defects and less, it can better achieve the purpose of high decoration.
The two base coats in the coating (commonly known as "two paste", also known as "putty paste") can be used to fill in large area surface defects, and can increase the thickness of the coating to a certain extent, so that the surface of the object to be coated The coating finally achieves a smoother, more shiny appearance.The types of putty have been introduced previously, and the scraping techniques of putty are mainly introduced here.
Way to scrape puttyThere are two ways to apply putty: full scraping and alternate hard and soft scraping. Full scraping can be divided into two types: filling scraping and lean scraping. Soft and hard alternate scraping can be divided into "scraping first" and "striping with belt." . The tools commonly used for scraping putty are mainly steel scrapers, putty trays, putty trays, rubber scrapers, and inlay knives. The purpose of filling and scraping is to fill the surface of the component with a thick putty in several times. When filling and scraping, mainly use the elastic part of the upper part of the mouth of the hard scraper to cooperate with hand strength.
The thickness of the putty used by scraping is slightly lower. It is used for the last one or two times of scraping to smooth the putty on the surface of the component.
During the secondary coating, the putty is scraped with a hard scraper (the upper part of the scraper plays the main role) to make the putty thin and bright.
将其平整，它适用于较大面积的刮涂。 The "first up and then back" in the alternating hard and soft scraping is to fill or hang the putty one by one first, and then flatten ithard . It is suitable for large area scraping. "Bear with a scraper", that is, flatten the edge of the putty, which is suitable for scraping and coating small areas or complex shapes.
When scraping vertical surfaces, it is better to use "soft on and hard to close", that is, first use a soft scraper to hang the putty on the vertical surface, and then use a hard scraper to flatten the putty. phenomenon.
When scraping both flat and curved components, the "hard-to-hard" method should be used, that is, both the putty and the putty are collected with a hard scraper to make the scraped surface smooth. When scraping simple curved surface components, the "soft up and soft close" method should be used, that is, soft putty tools are used when putting and putting putty, so as to facilitate the scraping of the round shape according to the graphics on the surface of the component.
When scraping the putty, please pay attention to: before the direct scraping, the metal surface should be coated with the matching primer, and the putty should be scraped after it is completely dry.
When scraping, the scraper should be pressed down gently and transported along the long axis of the coating surface; the amount of putty should be moderate each time to avoid causing honeycomb and pinholes;
When the last putty reaches the semi-dry state, apply it again.