Precision Casting Steel Casting Requirements

Precision Casting Steel Casting Requirements

Jun 12, 2020

Precision casting processing has high dimensional accuracy of cast steel. The general linear tolerance is 1%, the angular tolerance is: ±1/2 degrees, and the surface finish can reach Ra 1.6-3.2, which can save materials and machining costs. It can produce parts with complex shapes, or cast multiple parts into one, eliminating the need for assembly or welding. You can cast exquisite text or LOGO on the surface of the product to improve the product image. Casting materials have a wide range of properties, heat resistance, wear resistance, corrosion resistance, and material hardness up to HRC15-60 to meet the needs of various working conditions. Casting production batch. The quantity is flexible, from a small amount to large batch production, with high efficiency and good repeatability; the mold cost is low, and the initial investment in product development is small.

Most of the large steel castings are the main load-bearing and supporting parts in major technical equipment. The castings are huge in size, complex in shape, and have a wide cross-section. Such castings are often in high-temperature and high-pressure working conditions, and their performance and quality requirements are very strict, especially More stringent requirements for high temperature performance.

Cast steel parts should be used after heat treatment. Because of the existence of casting defects such as pores, cracks, shrinkage holes and shrinkage, coarse grains, uneven structure and residual internal stress in the steel castings in the as-cast state, the strength, especially the plasticity and toughness of the steel castings are greatly reduced.