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How to make investment casting

Edit:Xiangyang Liqiang Machinery Co., Ltd.UpDate:2019-06-10

       Injection Casting The first step in production is to create a casting mold. The investment mold is a model for forming a cavity in a refractory shell. Therefore, in order to obtain a casting having high dimensional accuracy and surface finish, the investment mold should first have high dimensional accuracy and surface finish. In addition, the properties of investment casting itself should be as simple as possible for subsequent shell production.

       investment casting, Also known as "lost wax casting", several layers of refractory material are typically applied to the surface of the wax pattern. After it has hardened and dried, the wax mold is melted to form a shell, and the wax mold is melted. A method of forming a casing and then pouring it to obtain a casting.

       The alloys produced by the method include carbon steel, alloy steel, heat resistant alloy, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy and ductile iron.

        The shape of a cast casting is often complicated. The minimum diameter of the castable hole on the casting can be up to 0.5 mm, and the minimum wall thickness of the casting is 0.3 mm. In production, parts that are originally composed of several parts can be directly cast from the investment mold by changing the structure of the parts, and designed as an integral part to save processing time and metal material consumption, and make the part structure more reasonable.

       Investment Casting Castings Most of the weight is dozens of cows (ie tens of grams to a few kilograms). It is more cumbersome to use investment casting to produce overly heavy castings, but the current castings with a weight of investment have reached 800 cattle.

       Investment Casting process is complex and difficult to control. The materials used and consumed are more expensive. Therefore, it is suitable for producing small parts having complicated shapes, high precision requirements or difficult to perform other processing, such as blades of a turbine engine.


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