Introduction of precision casting (Metal Casting)

26 7 月, 2019

What is precision casting?



Precision casting method refers to the use of non-metallic mold (shell mold), accuracy dimension and the bright surface is higher than the general sand casting method which has a unique characteristic and advantages different from general traditional casting, forging, and mechanical cutting.


Precision casting is divided into several categories, including lost-wax casting, die-casting, gravity casting and sand casting, etc. We’ll elaborate on these kinds of methods and also introduce the advantages and the applications.


What is the advantage of precision casting?


  • Can produce parts with arbitrarily complex shapes, especially those with complex internal cavity shapes
  • Adaptability, unlimited alloy types, almost unlimited casting size
  • Wide source of materials, remeltable waste, low equipment investment
  • High scrap rate, low surface quality and poor working conditions



What is the process of precision casting?


Liquid metal→filling→solidification shrinkage→casting



What is the application of precision casting?



The metal type has high manufacturing cost, long cycle and strict process requirements. It is not suitable for the production of single-piece small batch castings. It is mainly suitable for mass production of non-ferrous alloy castings, such as aluminum pistons for airplanes, automobiles, internal combustion engines, motorcycles, etc. , cylinder block, cylinder head, oil pump casing and copper alloy bushings, bushings, etc. For black alloy castings, it is also limited to medium and small castings with simple shapes.