What manufacturers hear most is why your steel castings are not made of iron castings? Or whether do you make cast iron parts?Many people have questions about the difference between steel castings and iron castings. Why do large foundries prefer to cast large steel castings?
That’s because the mechanical properties of steel castings are higher than those of cast iron, and they are widely used in mining, building materials, forging, hydraulic engineering, etc. However, cast steel is not perfect. Because the melting point of cast steel is relatively high, molten steel is prone to oxidation, the fluidity of molten steel is not as good as that of cast iron, and cast steel shrinks greatly. It is prone to insufficient pouring, cold shut, shrinkage cavities, cracks, etc. Defects such as sand adhesion make the casting process more complicated than that of iron castings.
1. Due to the poor fluidity of molten steel, it is easy to cause cold isolation and insufficient pouring. Steel casting processing manufacturers require that the wall thickness of large castings should not be less than 8MM. The pouring system structure is required to be simple and the cross-sectional size is larger than that of cast iron.
2. The shrinkage of castings exceeds that of cast iron. In order to prevent shrinkage cavities and other phenomena, manufacturers use risers, cold iron and other measures in the casting process according to the casting time to facilitate the smooth solidification of molten steel.
3. The produced castings need heat treatment in the later stage. Why is this? That is because there are casting defects such as pores, uneven structure, coarse grains, and large residual internal stress inside the casting in the as-cast state, which greatly reduces the strength, plasticity, and toughness of the casting. After heat treatment, the strength, plasticity, and toughness of large castings Improvement also increases the service life of steel castings.
Zhejiang Jinhua Shanvim Industry and Trade Co., Ltd., established in 1991. The company is a wear-resistant parts casting enterprise. The main products are the wear-resistant parts such as mantle, bowl liner, jaw plate, hammer, blow bar, ball mill liner, etc.. There are medium and high , Ultra-high manganese steel, medium carbon alloy steel , low, medium and high chromium cast iron materials, etc.. It mainly produces and supplies wear-resistant castings for mining, cement, building materials, infrastructure construction, electric power, sands and gravel aggregates, machinery manufacturing and other industries.
Shanvim as a global supplier of crusher wearing parts, we manufacture cone crusher wearing parts for different brands of crushers. We have more than 20 years of history in the field of CRUSHER WEAR PARTS. Since 2010, we have exported to America, Europe, Africa and other countries in the world.
Post time: Jan-18-2024