Stainless steel solution heat treatment is to heat the stainless steel to high temperature and then quickly cooled, so that the carbon reached the supersaturation state, to improve its plasticity and toughness. Solution heat treatment is the production of stainless steel pipe one of the torch to take a detailed look at today's heat treatment temperature control for the importance of stainless steel pipe production.
Solution heat treatment for austenitic stainless steel is the most effective softening process, after solution heat treatment of stainless steel welded pipe can get the best corrosion resistance, low strength and good plasticity, so as to be able to meet the various industrial pipe Claim. Usually austenitic stainless steel solution treatment temperature in the 1050 ~ 1150e, if not reach this temperature, its internal organization is unstable, there will be carbide precipitation, leading to the surface of steel pipe can not reach the bright color, the tube surface will show a black .
In addition, the stainless steel pipe heated to 1050 ~ 1150e, then immediately cooled down the pipe, on the one hand to ensure that the austenite in the cooling process is not precipitation, on the other hand out of the furnace pipe (leaving the gas protection atmosphere) The temperature should be reduced to no oxidation temperature. Can be seen that the cooling temperature is very important to strictly control the temperature range.
Therefore, in the whole solution heat treatment process, the stainless steel pipe heating and cooling temperature are required to strictly monitor the best in this process will protect the stainless steel pipe, in order to avoid the high temperature state of the pipe water oxidation.
