Precision casting processes cast steel with high dimensional accuracy. The general linear tolerance is 1%, the angle tolerance is: �±1/2 degrees, and the surface finish can reach Ra 1.6-3.2, which can save material and machining costs. It can produce parts with complex shapes, or cast multiple parts into one, eliminating assembly or welding work. Exquisite text or LOGO patterns can be cast on the surface of the product to enhance the product image. The casting material has a wide range of properties, heat resistance, wear resistance, corrosion resistance, and the material hardness can reach HRC15-60 to meet the needs of various working conditions. Casting production batch. The quantity is flexible, from small quantities to mass production, high efficiency, good repeatability; low mold costs, low initial investment in product development. Most of the large steel castings are the main load-bearing parts and support parts of major technical equipment. The castings are of huge size, complicated shape, and the thickness of the section is very different. 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. ã??ã?? Steel castings should be used after heat treatment. Because there are casting defects such as pores, cracks, shrinkage holes and shrinkage porosity, 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.
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