Mining machinery investment casting

Stainless steel precision castings have the advantages of high dimensional accuracy and good surface quality. In addition, molten die castings are generally less selective, no cutting, is an advanced process. Simply put, it is made of fusible material fusible model molten die castings stainless steel precision castings one of the process, so what are the ways of pouring stainless steel precision castings?

1.Directional crystallization

Turbine engine blades, magnetic tiles and some other sand casting castings, if its crystal organization is ordered in a certain direction columnar crystals, its working characteristics can be improved a lot, so the fusion mold casting directional crystal technology is rapidly developing.

2. Under crystallization pressure

The laminated sand casting pump body puts the shell into the pressure tank for pouring, then immediately closes the tower tank and enters the high pressure air or rare gas to make the casting condense under pressure to increase the density of the casting.

3. Pouring vacuum breathing

The laminated sand casting bearing seat will put the shell into the vacuum pouring box, according to the fine pores in the shell, absorb the gas in the shell, so that the alloy can fill the shell better, replicate the shape of the shell, improve the accuracy of the casting, avoid the air hole, under-pouring defects.

4. Intermittent hot gravity casting