ZG40Cr25Ni20Si2N Centrifugal Cast Pipes For The Metallurgical Industry

Centrifugal cast pipes, also known as centrifugal cast steel pipes, are particularly suitable for the centrifugal casting of heat-resistant steel pipes. Because the centrifugal casting method is used to produce centrifugal cast pipes, it not only has high efficiency but also the structure of the cast pipes is dense. Therefore, Western countries mostly adopt the centrifugal casting method for production.Centrifugal cast steel pipes can control the equiaxed crystal rate of the products without adding any equipment or materials, and can obtain products with all fine equiaxed crystals, greatly improving the mechanical properties of the castings. The centrifugal steel pipes produced by the high-speed rotation of the centrifuge have a high density, with a specific gravity reaching 7.85. The structure is uniform and dense, without defects such as pores and porosity. The tensile strength is close to that of rolled seamless tubes, and the price is low, which has obvious advantages. The inner and outer diameters, lengths and quantities of steel pipes can all be produced according to the needs of customers.

The main technical feature of centrifugal cast pipes is to control the pouring speed to be ≥20kg/s; Apply a protective agent to the inner wall during the pouring process; From any moment within 10 seconds from the start of pouring, increase the rotational speed of the mold cylinder in a certain pattern until the pouring is completed. After the pouring is completed, the rotational speed of the mold cylinder is continuously reduced in a certain pattern until the casting is completely solidified.The product is mainly used for transporting normal industrial gas pressure fluids such as water, natural gas, air, oil and heating cold-drawn alloy pipe steam, as well as welded steel pipes for other purposes. It is widely applied in professional roller tables, idlers, cylinder bodies and other fields of metallurgical equipment.