The quality of the raw materials used in the production of wear-resistant castings, the quality of their metal charging materials, fluxes, modifiers, refractories, fuels, and materials such as foundry sand, moulding sand binders and paints must all meet the standards for their use. In the design process of wear-resistant castings, the geometric shape and size of cast iron should be effectively determined according to its working conditions and the properties of metal materials. The rationality of the design must also be considered from the point of view of casting alloy and casting process characteristics.
To a certain extent, wear-resistant castings only form the standardization of die design in squeeze casting, so that they can develop faster and better. The operation must go through its cleaning process. The equipment for this kind of work is a polishing machine, a shot blasting machine, a riser cutting machine and so on.
Some wear-resistant castings have to be treated after casting, such as heat treatment, shaping, rust prevention, rough processing and so on, due to special requirements. Casting process can be divided into three basic parts, namely, casting metal preparation, casting preparation and casting processing. Cast metal is a metal material used in casting production. It is an alloy consisting mainly of a metal element and other metal or non-metallic elements, commonly known as a cast alloy, mainly cast iron. Cast steel and cast non-ferrous alloys.
The main carbides of wear-resistant castings are MC, M23C6 and M6C in carbide-strengthened cobalt-chromium-tungsten alloy, and M23C6 is precipitated at grain boundary and dendrite during slow cooling in cast cobalt-chromium-tungsten alloy. In some alloys the fine M23C6 can form eutectic. MC carbide particles with the matrix γ and can not have a significant effect on the dislocation directly so the strengthening effect of the alloy is not obvious. The fine dispersed carbides have a good strengthening effect.
Wear-resistant castings have wide flexibility and adaptability. The size of liquid molded parts is almost unlimited, its weight can range from a few grams to several hundred tons, and its wall thickness can range from 0.5mm to about 1m. Any metal material that can be dissolved into liquid in industry can be used in liquid forming.http://www.wuxiorient.com/