The casting precision, surface finish, material density, metallographic structure and mechanical properties of sand casting are often poor, so when these performance requirements of castings are higher, other casting methods, such as investment (loss), should be used. Casting, die casting, low pressure casting, etc., the following editors introduce the company:
I. Features and advantages of precision casting:
Precision casting, also known as investment casting, has the following characteristics compared to other casting methods and part forming methods:
1. The casting has high dimensional accuracy, fine surface roughness value, the dimensional accuracy of the casting can reach 4-6, the surface roughness can reach 0.4-3.2μm, which can greatly reduce the machining allowance of the casting, and can realize the manufacture without any allowance. reduce manufacturing cost.
2. It can cast castings with complex shapes and difficult to process by other methods. The casting profile size is as small as a few millimeters to thousands of millimeters, the wall thickness is the thinnest 0.5mm, and the smallest hole is less than 1.0mm.
3. Alloy materials are not limited: such as carbon steel, stainless steel, alloy steel, copper alloy, aluminum alloy and high temperature alloy, titanium alloy and precious metal can be produced by precision casting. For alloy materials that are difficult to forge, weld and cut, It is especially suitable for the production of precision casting methods.
4. High production flexibility and adaptability. It can be used for large-volume production as well as small batch or even single-piece production.
In summary, precision casting has the advantages of small investment scale, large production capacity, low production cost, simple process of complex products, and quick investment. It is in a favorable position in the competition with other processes and production methods, and the prospect is bright. .