Two-phase region heat treatment process for ferritic stainless steel hot rolled strip
A technology of hot-rolled strip steel and ferrite, which is applied in the field of stainless steel heat treatment, can solve the problems of no obvious improvement in stamping formability and wrinkle resistance, and achieve the suppression of the formation of cluster-like aggregation structures, developed texture, and improved plastic effect
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[0023] Example: Put the above-mentioned hot-rolled coils into a high-temperature box furnace to raise the temperature to 980°C, keep it for 3h, then cool it to 850°C with the furnace, keep it for 5h, recirculate this cycle once, and then cool it out with the furnace to below 250°C Air cooling, technology such as figure 2 Shown.
[0024] The mechanical properties of 430 ferritic stainless steel hot-rolled steel strip treated by two methods are shown in Table 1.
[0025] Table 1 Mechanical properties of 430 ferritic stainless steel hot rolled strip after treatment
[0026]
[0027] 430 ferritic stainless steel hot-rolled strip steel has the following mechanical properties after annealing: Rp 0.2 ≥205 MPa, Rm≥420MPa, A≥22%, HV value ≤200. It can be seen from Table 1 that the embodiment has lower strength, hardness and higher elongation, which is beneficial to the forming and processing of the plate and strip. The typical metallographic structure of the comparative example and the emb...
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