The necessity of heat treatment for stainless steel wire mesh

Stainless steel wire mesh has always been loved by people, and its corrosion resistance is particularly valued. The surface of stainless steel wire mesh is smooth and bright, will not rust, and can withstand harsh weather. So, such a good product must also have its special treatment. The stainless steel wire mesh has its characteristics only after heat treatment.

Heat treatment technology is also a key link in the entire stainless steel mesh production process. The strength and hardness of the stainless steel mesh after explosion welding increase. The plasticity is reduced, which is not conducive to subsequent straightening and use requirements.

The process of heat treatment is actually to eliminate the internal stress after explosive recombination. Improve plasticity. However, since generally stainless steel has its own solid solution treatment system, it will inevitably conflict with the heat treatment system of carbon steel, such as ultra-low carbon dual-phase 00Crl8Ni5M. When 3512, 00Cr22Ni5M03N, etc. stay below 950Y for a long time, it is easy to precipitate the Fe-Cr interstitial brittle phase, which will seriously deteriorate the plasticity and intergranular corrosion resistance of stainless steel. The general normalizing temperature of carbon structural steel is 890Y. Nearby, long-term over-temperature heating will cause coarse grains and reduced toughness.

Combinations like this are particularly important in the selection of heat treatment temperature, holding time and cooling system. In addition, the heat treatment system also has a great impact on the shear strength of stainless steel mesh. Taking 1Crl8Ni8T1+16Mn stainless steel mesh as an example, when the heat treatment temperature is higher than 400 degrees, the shear strength decreases significantly due to the coarse grains in the base layer, but the impact toughness , bending properties and elongation can be significantly improved with the increase of heat treatment temperature.