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Zhejiang Yihong stainless steel pipeline equipment Co., Ltd! EN
Low temperature resistance of stainless steel seamless pipe :2021-05-24 10:36:16

   Stainless steel seamless steel pipe It is suitable for the application of raw materials in low temperature environment. The category of low temperature is different, and its characteristics are very different. When manufacturing industrial grade nitrogen or oxygen, the gas is refrigerated at ultra-low temperature, and liquid nitrogen (vaporization temperature - 196 ℃) and liquid oxygen (- 183 ℃) are separated. In recent years, there are electric energy and gas with very little environmental pollution. Under the ultra-low temperature working conditions of production and manufacturing equipment, 304 stainless steel pipe can be used to transport large-scale to all parts of the country.

 Low temperature resistance of stainless steel seamless pipe (Fig. 1)

Stainless steel seamless pipe

Generally, seamless pipe is also a kind of high toughness raw material, but in low temperature environment, its compressive strength and ductility are weakened to some extent, so its application is limited. Austenitic stainless steel pipe and metallographic stainless steel pipe have their own excellent characteristics at room temperature and high temperature environment respectively, but they are not good at low temperature as ordinary steel. Be careful in application. Martensite 304 stainless steel pipe is widely used because of its high quality.


Process performance of stainless steel seamless steel pipe at low temperature: at low temperature, resistor, coefficient of thermal expansion, thermal conductivity, quality thermal fusion and magnetic belt will have a very large transformation. The coefficient of thermal expansion decreases at low temperature; thermal conductivity. The quality of hot melt is greatly reduced at low temperature.


In addition, the longitudinal elastic die is expanded at lower temperature. The stainless steel tube has no magnetism at room temperature, but becomes magnetic at low temperature. It is easy to convert into austenitic stainless steel plate. Tensile test at ultra-low temperature leads to in-situ stress relief. Low temperature characteristics of stainless steel plate seamless steel pipe; Low temperature aging - in low temperature environment, the kinetic energy of deformation is small. The tensile strength and cross-sectional shrinkage decrease. It is mainly produced in metallographic organization of BCC lattice constant. The article comes from the network. If there is any infringement or violation, please contact us for deletion.


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