Steel used for casting. A type of casting alloy. Cast steel is divided into three categories: cast carbon steel, cast low alloy steel and cast special steel. Changshu Hongqiao Casting steel Co., LTD. Customized steel casting Marine steel casting ABS Marine engineering service BOP casting steel cast
① Cast carbon steel
Cast steel with carbon as the main alloying element and small amounts of other elements. Carbon content of less than 0.2% is cast low carbon steel, carbon content of 0.2%~0.5% is cast medium carbon steel, carbon content of more than 0.5% is cast high carbon steel. With the increase of carbon content, the strength and hardness of cast carbon steel increase. Cast carbon steel has high strength, plasticity and toughness, low cost, and is used in heavy machinery to manufacture parts that bear large loads, such as rolling machine frame, hydraulic press base, etc. It is used in the manufacture of heavy and impact-resistant parts such as bolsters, side frames, wheels and couplings on railway vehicles.
② Cast low alloy steel
Cast steel containing manganese, chromium, copper and other alloying elements. The total amount of alloying elements is generally less than 5%, which has greater impact toughness and can obtain better mechanical properties through heat treatment. Casting low alloy steel has better performance than carbon steel, which can reduce the quality of parts and increase the service life.
③ Casting special steel
Alloy cast steel, which is refined to meet special needs, has a wide variety, usually containing one or more high amounts of alloying elements to obtain some special properties. For example, high manganese steel containing 11% to 14% manganese can withstand impact wear, and is mostly used for wear-resistant parts of mining machinery and construction machinery; Various stainless steels with chromium or chromium nickel as the main alloying element are used for parts that work under corrosion or high temperature conditions above 650 ° C, such as chemical valve bodies, pumps, containers or turbine shells of large-capacity power stations.
Steel casting
1. Detection of surface and near-surface defects of castings
2 Detection of internal defects in castings For internal defects, the commonly used non-destructive testing methods are X-ray testing and ultrasonic testing. Among them, X-ray detection has the best effect, which can get an intuitive image reflecting the type, shape, size and distribution of internal defects, but for large castings with large thickness, ultrasonic detection is very effective, and can measure the position, equivalent size and distribution of internal defects more accurately.
Changshu Hongqiao Cast Steel Co., Ltd. mainly produces various specifications of carbon steel, high, middle and low alloy steel, stainless steel, heat-resistant steel, high manganese steel, high chromium cast iron. For petroleum, chemical industry, metallurgy, mining machinery, coal mining machinery, wind power, nuclear power, Marine and other industries to provide high-quality steel casting, and export abroad. Changshu Hongqiao Casting steel Co., LTD. Customized steel casting Marine steel casting ABS Marine engineering service BOP casting steel cast