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Foundry - Process classification and elements of castings

People's lives can now get better and better. With the development of society, today's enterprises are also undergoing difficult transformations. Users of wear-resistant castings at home and abroad have increasingly higher requirements for the quality of wear-resistant castings, and market competition is becoming increasingly fierce, which has promoted the development of wear-resistant castings. New surface treatment technologies for various die-casting molds are constantly emerging. Below, let's take a look at the casting plant—casting process classification and elements.

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Foundry - Classification of Castings

Foundry - Castings are classified as follows: sand castings, continuous casting, die casting, low pressure casting, centrifugal casting, gravity die casting, vacuum die casting, squeeze casting, lost foam casting.

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Main sections of a foundry

Foundry molding technology equipment is the main equipment including the molding department. The number of molding process equipment depends on the foundry's production development plan and the productivity of the molding equipment. According to the degree of mechanization, the modeling department can be divided into two categories: manual modeling department or simple mechanized modeling department, mechanized modeling department or automated modeling department.

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What are the differences between cast steel and cast iron?

The essential difference between cast iron and cast steel lies in their different chemical compositions. In engineering, it is generally considered that iron has a carbon content higher than 2%, while steel has a carbon content lower than this value. Due to the different compositions, the microstructure and properties are also different. Generally speaking, cast steel has good plasticity and toughness, exhibiting good elongation, area reduction, and impact toughness, while cast iron has hard and brittle mechanical properties.

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The role of five elements in cast iron parts

Cast iron is a cast iron-based alloy with a carbon content of more than 2%, and also contains silicon and small amounts of elements such as manganese, phosphorus, and sulfur. White cast iron, gray cast iron, and ductile iron are common. The conventional elements of cast iron are carbon, silicon, manganese, sulfur, and phosphorus, which are our five major conventional elements and are important factors that directly affect the mechanical properties of castings.

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Some knowledge points of cast iron

Compared to carbon steel, cast iron has a higher content of C and Si in its chemical composition (C 2.5% ~ 4.0%, Si 1.0% ~ 3.0%), higher impurity elements Mn, P, S, and alloy elements in some alloy cast irons with special properties. The presence and content of all these elements will directly affect the structure and properties of cast iron.

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