Electroplating claw clamp

Dongguan Precision CastingWhat are the real things included in hardware casting technology:

Metal casting-production principle and technological process

1. Production principle: This method first makes a foam model according to the process requirements, coats a special high-temperature resistant coating, and then places it in a special sand box after drying. When the molten metal is cast in a vacuum state, the model vaporizes and the molten metal replaces the model, copying the same casting as the foam model.

2.Dongguan precision casting process:

A. Make foam gasification molds.

B. Combined pouring system.

C. The surface of the gasification mold is sprayed with special refractory paint and dried.

D. Place the specially-made sand box on the three-dimensional vibrating table.

E. Fill in the bottom sand (dry quartz sand) to compact and scrape.

F. Put the dried gasification model on the bottom sand, fill the dry sand according to the process requirements, CNC vibrate for an appropriate time, and then scrape the box opening.

G. Cover the mouth of the box with a plastic film, place a sprue cup, start the vacuum system, and after the dry sand is tightened and formed, pouring, the gasification model disappears, and the molten metal replaces its position.

H. Release the vacuum, turn over the box after the casting is condensed according to the process, and take out the casting from the loose quartz sand.

Uses and advantages of Dongguan precision castings lost foam

The lost foam casting process fully integrates the advantages of the solid and V method casting processes. It is suitable for steel, iron, aluminum and other grades, various materials, and large, medium and small castings of different structures. Using dry sand Solid type, copy the original prototype. The precision of the geometric dimensions of the casting is high, there is no flash, burr, cold barrier, uniformity, and the surface finish is close to precision casting. The internal structure of the casting is stable, and casting defects such as blisters, air and shrinkage are eliminated. , The process makes full use of the concept of environmental protection, and has low investment, and there is no pollution in the entire production process.