Die for casting locking ring

Abstract

The invention discloses a die for casting a locking ring, which comprises an upper die (1), a lower die (2) and a sand core (3). The upper die (1), the lower die (2) and the sand core (3) are combined to form a casting cavity of the locking ring to be cast. The die is characterized in that the sand core (3) is fixed with the upper die (1), a whole including the sand core and the upper die is combined with the lower die during installation, and a junction surface between the upper die and the lower die can generally keep horizontal, so that even though sand grains or other sundries exist on the lower die, the sand core can keep horizontal and be free of slope, wall thickness of the locking ring is guaranteed, and acceptability of the casting is improved.

Description

technical field [0001] The invention relates to a casting mold, in particular to a mold for casting a locking ring. Background technique [0002] The locking ring is an important part of the coal mill, which requires wear resistance and heat resistance during work. Since the locking ring is a rotating body, there are high requirements for the wall thickness of the locking ring. The locking ring is generally produced by casting. The mold used to cast the locking ring mainly includes an upper mold, a lower mold and a sand core. After the upper mold, the lower mold and the sand core are combined, the casting mold of the locking ring to be cast is formed. cavity. At present, the upper mold, the lower mold and the sand core are generally combined directly. When combining, the sand core is directly placed on the lower mold, and then the upper mold is combined with the lower mold. When the sand core is combined with the lower mold, the lower mold and sand There may be sand or ot...

AI Technical Summary

Problems solved by technology

At present, the upper mold, the lower mold and the sand core are generally combined directly. When combining, the sand core is directly placed on the lower mold, and then the upper mold is combined with the lower mold. When the sand core is combined with the lower mold, the lower mold and sand There may be sand or other debris on the joint surface of the core, which will cause a certain inclination when the sand core is placed on the lower mold, and the shape of the casting cavity surrounded by the upper mold, the lower mold and the sand core will be different. Change, the wall thickness of each place will be different, which will affect the quality of the locking ring, and may produce waste products in severe cases

Images