What are the performance characteristics of precision castings?

1. The maximum length of precision castings is 700mm, the easy-to-make length is less than 200mm, and the maximum weight is about 100kg, usually less than 10kg.

2. The dimensional tolerance of precision castings is 20mm±0.13mm, 100mm±0.30mm, 200mm±0.43mm, and the dimensional accuracy of small parts is not easy to reach within ±0.10mm. The angle tolerance is ±0.5~±2.0 degrees, and the minimum thickness of precision castings is 0.5~1.5mm. The surface roughness of precision castings is about Rmax 4S~12S.

3. There are almost no restrictions on the materials of precision castings, such as aluminum alloys, magnesium alloys, titanium alloys, copper alloys, various steels, cobalt-based and nickel-based heat-resistant alloys, and hard materials.

4. Precision castings are used to produce complex-shaped workpieces with good dimensional accuracy and can be processed by cutting.

5. Precision castings save material waste and can be mass produced.

Dewaxed precision castings are widely used in jet engines, gas turbines, steam turbines, aircraft parts, internal combustion engines, vehicles, food machinery, printing machinery, paper machinery, compressors, valves, pumps, measuring instruments, sewing machines, weapons, Business machines, and other machine parts.