The View of Investment Casting

Date:27-02-2017

Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques.[1] The term "lost-wax casting" can also refer to modern investment casting processes. investment casting is an industrial process used to create metal parts with great detail that would be difficult or impossible to achieve with other casting methods.

Investment casting is one of the most basic metal-forming techniques. It is a multi-step process that delivers fine details at a reasonable cost. The equipment cost for investment casting is considered to be minimal, compared with other forms of full-mold casting or die casting.

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 ductile iron.

The shape of the investment casting is generally complicated, the minimum diameter of the castable hole can be up to 0.5mm, and the minimum wall thickness of the casting is 0.3mm.

The biggest advantage of investment casting is the fact that the die-casting has a high dimensional accuracy and surface finish, so it can reduce the machining work, only in the parts require a higher part to leave a little margin can be processed, and even some castings only Stay polished, polished margin, no mechanical processing can be used. It can be seen that the use of investment casting method can save a lot of machine tools and processing time, substantial savings in metal raw materials.

Another advantage of the investment casting method is that it can cast complex castings of various alloys, especially casting high temperature alloy castings. Such as jet engine blades, the streamlined profile and cooling with the cavity, with the mechanical processing technology is almost impossible to form. The production of the investment casting process not only can be mass production, to ensure the consistency of the casting, but also to avoid the mechanical processing of residual stress after the knife.