Heat treatment method for high-chromium steel and heat-treated high-chromium steel
The invention provides a heat treatment method for high-chromium steel and the heat-treated high-chromium steel, and belongs to the technical field of steel machining. The heat treatment method for the high-chromium steel comprises the following steps that the high-chromium steel is subjected to hig...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a heat treatment method for high-chromium steel and the heat-treated high-chromium steel, and belongs to the technical field of steel machining. The heat treatment method for the high-chromium steel comprises the following steps that the high-chromium steel is subjected to high-temperature austenitizing treatment firstly, the high-chromium steel is subjected to low-temperature austenitizing treatment, then the high-chromium steel is subjected to cooling treatment by adopting a cooling medium, the treatment temperature in the high-temperature austenitizing treatment step is 1140 DEG C-1160 DEG C, the treatment temperature in the low-temperature austenitizing treatment step is 850 DEG C-1050 DEG C, and the cooling speed of the cooling medium to the high-chromium steel is 30 DEG C/min-100 DEG C/min. According to the treatment method, the impact toughness is effectively improved while the heat-treated high-chromium steel has relatively high hardness; and according to the heat-treated high-c |
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