What are the methods to determine the pouring surface of stainless steel precision casting?

Method to determine stainless steel precision casting pouring surface.

1. The important processing surface or main processing surface of stainless steel precision casting faces downward or is located on the side: during pouring, the gas in the molten metal, the slag and the sand in the casting mold will float, which may cause pores and slag inclusions in the upper part of the casting. .With the possibility of defects appearing in the lower part of the casting, the structure of defects such as blisters is relatively dense.

In order to ensure the quality of the important working surface, the pouring position of the machine tool body should face the downward guide rail surface. The quality requirements of its circumferential surface are high, and the vertical pouring scheme can make the circumferential surface on the side to ensure uniform quality.

2. The large surface is poured downward or inclined: Since the molten metal has strong heat radiation to the upper part of the mold during pouring, the top sand mold will crack when it expands and arches, resulting in defects such as sand inclusions and blisters on the large surface. The large surface is poured downward or inclined. Can avoid casting defects in large-surface production.

The thin wall of stainless steel investment casting faces downward, sideways or tilted: In order to avoid cold insulation in the thin-walled part of the casting. If there are no casting defects, the thin wall with a larger area should be placed in the lower part of the casting, or placed on the side wall or tilted Location.

The thickness of stainless steel precision casting should mostly be placed on the top or on the side of the parting surface. The main purpose is to facilitate placing the riser in the thick place for feeding.