Characteristics and problems of valve casting process

Casting features:

1.Casting has a wide range of adaptability, great flexibility, product requirements and various working conditions. It can manufacture products of various metal materials, such as iron, carbon steel, low alloy steel, copper, copper alloy, aluminum, aluminum alloy, titanium alloy, etc. Compared with other molding methods, casting is not limited by the weight, size and shape of parts. The weight can be from several grams to several hundred tons, and the wall thickness can be from 0.3 mm to 1 m. as long as the shape is within the scope of casting technology, it is very complex, or it is difficult to machine, or even difficult to make parts, it can be obtained by casting.

2.Most of the raw materials used for casting come from a wide range of sources and are cheap, such as scrap steel, sand, etc. However, due to the recent rise of domestic casting and steel industry, the prices of these raw materials have risen.

3.Through the advanced casting technology, the dimensional accuracy and surface quality of castings can be improved, so that the parts can be cut less or not. It can save labor and material for product manufacturing, and save the overall production cost.

Casting problems:

1.Most of the foundry enterprises in China are backward in foundry technology and low in mechanization, which leads to low dimensional accuracy, poor surface quality, high consumption of energy and raw materials, low production efficiency, high labor intensity, serious environmental pollution and poor efficiency.

2.Casting is a high-risk industry, but also a bitter, dirty, tired work, poor industry efficiency, leaving no one. It is difficult to find technicians or operators, and there is no successor.

3.There are many casting processes and long processes, which are difficult to control the product quality and have a high rejection rate. Recently, the alloy price and labor cost have increased, and the casting cost has increased significantly.