The most important thing for us to make flanges is to understand the material of flanges. The flange materials we usually produce mainly include carbon steel flanges, stainless steel flanges and alloy steel flanges, while the stainless steel materials are specifically divided into ferrite, austenitic stainless steel and duplex stainless steel.
With the development of flange forging technology, all kinds of high-quality stainless steel are emerging, which leads to the continuous high-performance stainless steel flanges. Although the treatment process of stainless steel flange has a great impact on the properties of stainless steel flange, the heat treatment of stainless steel itself can better play the function of stainless steel. Today, let's learn about the heat treatment principle of austenitic stainless steel flanges. During the heating and cooling process of stainless steel with different steel grades, the transformation of matrix structure, the formation and transformation of carbon, nitride and intermetallics are different, which have different effects on the properties of stainless steel. In this way, the performance of stainless steel flanges with different raw materials will be different. Therefore, the appropriate heat treatment process should be selected according to the steel type and purpose of use during the heat treatment of stainless steel. The stainless steel flanges we often contact are austenitic stainless steel flanges. Therefore, the focus is on the heat treatment of raw materials of austenitic stainless steel flanges. The reason for heat treatment is that the matrix structure of austenitic stainless steel is austenitic, and there is no martensitic transformation and hardenability during heating and cooling. The purpose of austenitic heat treatment is to improve corrosion resistance, eliminate the adverse effects of the second phase, eliminate stress, or soften the work hardened material. Only in this way can we meet the use requirements of our stainless steel flanges.
