Thermal processing method of chromium-containing ferrite refractory steel
A heat treatment method and heat-resistant steel technology, applied in the field of thermal processing of metal materials, can solve the problems of small grain size unfavorable long-term creep, lack of application prospects, etc., and achieve the effect of easy operation and simple process steps
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[0018] The heat treatment method of the chromium-containing ferritic heat-resistant steel proposed by the present invention, the weight percentage of each element in the ferritic heat-resistant steel is:
[0019]
[0020]
[0021] Surplus is Fe, it is characterized in that this heat treatment method comprises the following steps:
[0022] (1) Heat the ferritic heat-resistant steel parts to 1050 ° C ~ 1250 ° C, and keep it warm for 1 to 2 hours;
[0023] (2) Cooling the ferritic heat-resistant steel part in step (1) to 800°C-900°C, keeping it warm for 1-2 hours, and water quenching to room temperature;
[0024] Or: cooling the ferritic heat-resistant steel parts in step (1) to 800°C-900°C, deforming the ferritic heat-resistant steel parts to reduce the thickness of the ferritic heat-resistant steel parts by 20%-70 %, heat preservation for 1 to 2 hours, water quenching to room temperature; (3) heat the ferritic heat-resistant steel parts in step (2) to 700°C to 800°C, hea...
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