The strengthening and toughening treatment of 2Crl3 studied in the experiment takes the heat treatment process as a means and the steam filter valve as an example to explore the performance change and mechanism under the heat treatment process parameters. Steam valve is a valve body that controls the inlet and outlet of gas steam. The steam valve is precision cast with 2Crl3 stainless steel material. Its valve body is mostly used for marine equipment, chemical equipment, power plant equipment, etc. with the development trend of high parameter, high performance and large-scale industrial equipment, the matched steam valve body is required to have higher performance.
The figure shows the failed valve parts. The valve body equipment processed with 2Crl3 as the raw material. Under the harsh working environment, the material itself needs to accept a series of challenges such as high temperature and high pressure, alternating load and corrosive medium. It not only needs excellent manufacturing process, but also the performance index of the material itself is very important. Due to the stress concentration, grinding and erosion of the working environment, 2Crl3 material must have certain requirements for toughness, strength and hardness. According to the requirements of 2Crl3 stainless steel material given by China Shipbuilding Heavy Industry Fengfan Precision Casting Co., Ltd., the impact toughness Akv value is required to be greater than 39.2j, The hardness is about 220-255hbw, the tensile strength is more than 490mpa, and the elongation is more than 12%. Taking 2Crl3 material as the research object, through heat treatment test research and reasonable test scheme, the best process of strength and initial matching is obtained. The formation mechanism of 2ch3 strengthening and toughening is known by in-depth analysis of the structure of the material itself, which not only optimizes the heat treatment process of the material itself, but also improves production efficiency, reduces resource waste, reduces loss cost and so on.