Original title: which manufacturer of forged XM21 stainless steel is cost-effective?
XM21 stainless steel is a low carbon austenitic stainless steel, also known as AISI 304LN stainless steel. It is a variant formed by adding a small amount of nitrogen (N) element to 304 stainless steel, which has good corrosion resistance to acidic media, high temperature environments and chloride ions. This makes it widely used in the fields of chemical, petroleum and food processing.
Currently, XM21 stainless steel has good strength and plasticity, as well as high tensile strength and ductility. Therefore, it is suitable for the manufacture of components and parts that need to withstand high forces and vibrations. By adding nitrogen, XM21 stainless steel can improve the material's tendency to grain boundary corrosion. Grain boundary corrosion is a corrosion phenomenon caused by differences in the chemical composition of the grain boundary region in some specific environments.The nitrogen element of XM21 stainless steel can improve the stability and corrosion resistance of the grain boundary region.
Shanxi Yongxinsheng Heavy Industry Co., Ltd. has thirty years of experience in precision forging, and its products are exported to many countries such as South Korea, Japan, Russia, Brazil, etc. The following is an introduction by Yongxinsheng Heavy Industry about the specific steps of forging XM21 stainless steel:
First, material preparation
Select the appropriate quality of XM21 stainless steel billet to ensure that it meets the relevant specifications and requirements. The material should be treated with surface cleaning and removal of oxides and so on.
Second, heating
Put the XM21 stainless steel billet into the forging furnace and heat it according to the temperature curve in the forging process guide. Normally, the forging temperature of XM21 stainless steel ranges from 1000°C to 1200°C. The preheated XM21 stainless steel billet is randomly placed in the forging die and formed using forging machinery according to the desired shape and size. Different forging methods such as free forging, ring forging or die forging are available.
Third, control the deformation temperature
In the forging process, to control the deformation temperature, to avoid too high or too low temperature on the material properties have adverse effects. The deformation temperature can be controlled by adjusting the forging speed and temperature. And according to the nature of XM21 stainless steel and the shape of the required molding, to determine the appropriate forging pressure and speed. Too high forging pressure may lead to material fracture, while too low pressure may lead to incomplete forming.
Fourth, repeated forging and annealing
For complex shaped forgings, it may be necessary to carry out multiple forging and annealing to achieve the desired shape and performance. After each forging, a suitable annealing treatment is carried out to remove residual stresses and improve the plasticity of the material. After completing the forging, XM21 stainless steel forgings can be subjected to subsequent processes such as surface treatment, dressing and heat treatment to obtain the final product.
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Source: Shandong City News