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Centrifugally cast heat resistant steel ZG40Cr25Ni20 reformer tube
Reformer is a common type of furnace used in steelmaking to convert pig iron into steel. In this process, high temperature and corrosion are the main problems faced by furnace tubes. Therefore, when choosing the furnace tube material, it is necessary to consider its heat resistance and corrosion resistance.
The main characteristics of ZG40Cr25Ni20 centrifugal cast pipe products are loss, high sulfur resistance, impact resistance, easy cutting, welding and so on. Compared with similar heat-resistant steel products, ZG40Cr25Ni20 centrifugal cast tube can improve the service life of 1-3 times, and the cost of similar materials is 5%-15% lower. It can be used continuously in the high temperature environment of 1000-1300℃. ZG40Cr25Ni20 centrifugal cast tube has good thermal fatigue resistance and performance, and repeated use is not easy to produce hot cracking phenomenon. ZG40Cr25Ni20 centrifugal cast pipe temperature can reach more than 1400℃, product quality is stable.
ZG40Cr25Ni20 heat resistant steel is widely used in radiation tubes and aerospace power fields. On the one hand, with the increase of the working temperature of the equipment and the extension of service time, the performance of austenitic heat-resistant steel is more and more demanding. At the same time, in the service process of austenitic heat-resistant steel, for a long time in high temperature combustion flue gas, high temperature failure phenomenon often occurs. Therefore, it is of great significance to study the high temperature failure cause of austenitic heat-resistant steel to prolong the service life. ZG40Cr25Ni20 heat resistant steel burn causes, in order to prevent ZG40Cr25Ni20 heat resistant steel prolong the service life to provide the basis for ZG40Cr25Ni20 steel pipe centrifugal casting seamless pipe high temperature resistance corrosion resistance oxidation resistance.
ZG40Cr25Ni20 centrifugal casting pipe can be divided into water cooled metal centrifugal casting pipe, coated metal centrifugal casting pipe, resin sand lined centrifugal casting pipe, ZG40Cr25Ni20 sand mold centrifugal casting pipe according to the characteristics of the mold.
Water cooled metal centrifugal casting pipe, centrifugal casting method, which is characterized by the use of long flow groove, can flow groove movement, also can flow groove movement. Because of the special water cooling device, the structure is complex and the cost is high. In addition, due to the chilling effect of water, the ZG40Cr25Ni20 cast pipe is easy to appear white phenomenon, the need for heat treatment, and the cast pipe production efficiency is high, generally used for small and medium caliber ductile iron pipe mass production. ZGCr25Ni35Nb centrifugal tube 40Cr25Ni20 centrifugal tube castings look good without porosity.
ZG40Cr25Ni20 centrifugal casting steel pipe, without adding any equipment and materials, you can control the equiaxed crystal rate of products, can get all fine equiaxed crystal products, greatly improve the mechanical properties of castings. ZG40Cr25Ni20 centrifugal cast pipe corrosion resistance high temperature radiation pipe slag discharge pipe size standard after high-speed rotation of centrifuge production of ZG40Cr25Ni20 centrifugal steel pipe, high density, specific gravity up to 7.85, uniform and dense organization, no porosity, porosity and other defects. The tensile strength is close to the strength of rolled seamless pipe, and the price is cheap, has obvious advantages. ZG40Cr25Ni20 steel pipe inside, outside diameter size, length, quantity can be produced according to customer needs.
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