Sand coated moulding working process of bucket teeth & adapter
Sand coated moulding working process is almost like Lost-wax Moulding Working Process, but only one different:
Lost-wax Moulding use water glass as a binder and quartz sand is mixed into a molding sand according to a certain ratio. After the shape is formed, carbon dioxide is blown and solidified, and then the mold is molded, combined, and cast into a casting.
The coated Sand moulding is to heat the quartz sand and put it into the sand mixer. Add the resin, curing agent and anti-caking agent to make the surface of the quartz sand coated with a resin film. After mixing, the mixture is cooled and crushed for use.
Advantages of coated sand castings:
- Small pollution: The work site environment has improved significantly. Although the coating method based on coated sand has a certain influence on the environment, it has a small amount of sand used, and all the waste sand after use is recycled. The work site is clean and free of dust.
2, the sand-covered layer is thin, the amount is small: the production cost is low, the waste is small, and the used sand after use can be recycled and recycled.
- Change the appearance quality of the blank, reduce the cutting allowance, high process yield and stable quality.
- Improve the intrinsic quality of the product. Since the cooling speed of the coated sand molding is fast, the graphite form of the casting is greatly improved, the mechanical properties of the product are improved, and the service life of the product is increased.
- The coated sand molding adopts automatic production line operation to improve production efficiency, reduce labor intensity of workers and shorten labor time.