Precision castings are metal parts or components manufactured through precision casting processes, characterized by high dimensional accuracy, good surface quality, complex internal structure, and a wide range of materials. They are widely used in modern manufacturing.

Characteristics

High dimensional accuracy: Due to the use of precision molds and process control, the dimensional accuracy of castings can reach a high level, usually within ± 0.1mm, which can meet high-precision assembly and fitting requirements.
Good surface quality: The casting surface is smooth, without defects such as sand holes and pores, and does not require extensive subsequent processing, which can meet high standards of appearance and functional requirements.
Complex internal structure: It is possible to produce parts with complex internal structures, such as thin walls, deep cavities, etc., which are difficult to achieve with traditional casting processes.
Wide range of materials: It can produce castings of various materials, such as stainless steel, aluminum alloy, copper alloy, carbon steel, alloy steel, etc., to meet the needs of different industries.

Process method

Investment casting, also known as lost wax casting, is a traditional method for manufacturing high-precision and high-quality metal parts. By making wax molds, coating refractory materials, dewaxing, baking shells, pouring metal materials, and other steps, high-precision finished products can be obtained.
Die casting: Pressing metal into a mold under high pressure to produce castings with accurate shape and size. Die casting process has stable structural dimensions, smooth surface, high one-time molding rate, and can manufacture some wide and thin-walled castings, commonly used in the production of automotive parts.
Injection molding: High precision casting technology is formed by injecting molten metal into a mold under high pressure, followed by rapid cooling and solidification. Suitable for producing small and medium-sized castings, as well as precision castings with complex production processes or difficult pouring.
Ceramic casting: a new process developed on the basis of ordinary sand casting, using ceramic slurry to make molds. The surface roughness of ceramic castings can reach Ra10~1.25 microns, and the dimensional accuracy can reach 3~5 levels, achieving the goal of minimal or no cutting.
Metal sand casting: Using casting alloys as raw materials, sand cores or sand molds are made, and then metal liquid is poured. After the casting cools down, it is taken out to obtain high-precision, good surface quality, and seamless castings.

Application Fields

Aerospace: Manufacturing complex shaped, high-temperature and high-pressure resistant key components such as turbine blades and combustion chambers to meet high-precision and high-performance requirements.
Medical devices: producing precision components with complex surfaces and biocompatibility requirements, such as artificial joints and dental implants.
Automobile manufacturing: producing components with precise structures and excellent mechanical properties such as engine cylinders, transmission gears, etc., to enhance the performance and reliability of automobiles.
Mold manufacturing: Casting various molds such as stamping dies, forging dies, plastic molds, metal molds, die-casting molds, glass molds, etc. The mold has a long service life and low manufacturing costs.
Electronic devices: Manufacturing precision components for electronic devices to achieve near net shape and reduce subsequent processing volume.