Wet resin sand adopted in iron mold sand coated casting process

Abstract

The invention relates to wet resin sand adopted in an iron mold sand coated casting process. The wet resin sand comprises the following components including, by weight, 98-99 parts of phenolic resin sand, 0.5-0.8 part of water and 0.7-1.2 parts of furan resin. When the wet resin sand provided by the invention is used as core-making sand of an iron mold cavity core, original core-making sand formedby mixing rick fat oil and original sand can be replaced. The whole making method is simple, the production environment is purified, the iron mold quality is guaranteed, and the production cost of enterprises is reduced; and meanwhile the labor intensity of a sand cleaning procedure is relieved, the shaving amount is reduced, and the cost can be reduced by about 150 thousands each year for companies.

Description

technical field [0001] The invention belongs to the field of sand-coated iron mold casting, and in particular relates to wet resin sand used in the sand-coated iron mold casting process. Background technique [0002] Iron mold, as a tool that must be used in the iron mold sand-coating process, its casting quality will directly affect the quality of the products produced by it. [0003] In the field of iron mold sand-covered casting, casting cores are widely used in both the production of iron molds and the parting of products. Traditional cores are usually prepared by mixing raw sand and synthetic fat oil. During the baking process after the core is formed, the synthetic fat oil will be transformed into polluting exhaust gas, seriously polluting the environment, and cannot adapt to the existing Environmental protection requirements; the core formed by the preparation of synthetic grease and raw sand, in the process of iron mold making, due to the characteristics of the core...

AI Technical Summary

Problems solved by technology

Traditional cores are usually prepared by mixing raw sand and synthetic fat oil. During the baking process after the core is formed, the synthetic fat oil will be transformed into polluting exhaust gas, seriously polluting the environment, and cannot adapt to the existing Environmental protection requirements; the core formed by the preparation of synthetic grease and raw sand, in the process of iron mold making, due to the characteristics of the core material, after the molten iron is injected into the cavity, it is easy to form surface cracks, which will not only cause the inner wall of the cavity to form different sizes. First, the casting burrs and splits lead to poor surface quality of the mold cavity, cumbersome sand scraping and cleaning process, and also affect the consistency of the size of the iron mold cavity. After the casting is formed, it is easy to cause casting defects on the surface of the casting