Method for casting cast iron piece with long service life

Abstract

The invention relates to the technical field of cast iron piece casting, and discloses a method for casting a cast iron piece with the long service life. The method specifically comprises the following steps that 1, a wooden mold is manufactured according to design size data of the cast iron piece, and after the wooden mold is manufactured, a pattern plate is pasted on the outer surface of the wooden mold; 2, a riser, a pouring opening and a vent hole are formed in the upper part of the wooden mold, a wooden rod is used for blocking the riser, the pouring opening and the vent hole, and the surface of the wooden mold is finely ground through a grinding tool, so that the surface of the wooden mold is flat and smooth; 3, a wooden box body is manufactured according to the size of the wooden mold, a gap exists between the inner wall of the wooden box body and the wooden mold, the wooden mold is placed into the wooden box body for later use, and the riser, the pouring opening and the vent hole of the wooden mold face upwards; and 4, the gap between the wooden box body and the wooden mold is filled with fire clay to be full. According to the method for casting the cast iron piece with thelong service life, the quality and the service life of the cast iron piece are effectively improved.

Description

technical field [0001] The invention relates to the technical field of cast iron castings, in particular to an iron casting casting method with long service life. Background technique [0002] Cast iron is a workpiece made of molten iron. The raw material of cast iron is a cast iron-based alloy with a carbon content greater than 2%. It also contains silicon and a small amount of manganese, phosphorus, sulfur and other elements. It has a low melting point and flow Good performance, simple smelting, low cost, wear resistance and so on. [0003] Most of the existing casting methods of iron castings use the sand casting method. The sand casting is to make a wooden mold according to the shape of the iron casting, and then use the molding sand to shape the wooden mold. After the molding, the wooden mold is taken out and poured into the sand mold. Molten iron, molten iron is cooled and solidified to form iron castings. The surface roughness of iron castings cast by this method is ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for casting iron castings with long service life, which has the advantages of being able to improve the surface quality and service life of iron castings, and solves the problem of the surface quality of iron castings cast by the existing iron casting casting method. and poor service life