Metal Casting is a process of smelting metal material into a liquid that meets certain requirements and pouring it into a mould. After cooling and solidifying and finishing, a casting with a predetermined shape, size and performance is obtained. Because the casting blank is almost formed, the purpose of avoiding machining or small amount of machining reduces the cost and time to a certain extent. Casting is one of the basic processes of modern machinery manufacturing industry. One common used process is Investment casting.
Investment casting usually refers to making patterns in fusible materials, covering the surface of the pattern with several layers of refractory materials, and then melting the pattern out of the mold shell to obtain a mold without a parting surface. After high temperature baking can be sand-filled casting scheme.
The types of alloys that can be produced by investment casting are carbon steel, alloy steel, heat-resistant alloy, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy, and nodular cast iron.
Advantage:
High dimensions accuracy. Generally can reach CT4-6, it can improve the utilization rate of metal materials. Investment casting can significantly reduce the amount of processing of the product's forming surface and mating surface, save the consumption of cutting table materials and cutting tool materials; can maximize the similarity between the blank and the part, and bring great benefits to the structural design of the part. Convenience. Casting castings with complex shapes Investment casting can cast castings with very complicated shapes, castings with wall thickness of 0.5mm and weight as small as 1g, and can also cast combined and integral castings; it is not restricted by alloy materials. Investment casting can cast carbon steel, alloy steel, ductile cast iron, copper alloy and aluminum alloy castings, as well as castings of high-temperature alloys, magnesium alloys, titanium alloys and precious metals. For alloy materials that are difficult to forge, weld, and cut, it is particularly suitable for casting by precision casting; high production flexibility and adaptability. Investment casting is suitable for both mass production, small batch production and even single piece production.
