FIELD: metallurgy.
SUBSTANCE: during hardening it is heated to 850-890°C, first it is cooled in saturated NaCl salt solution, where it is exposed to 250-450°C, and then in oil to room temperature. Drawing is performed with the item heated in oil to 190-210°C during 2-3 hours depending on its sizes, and then heated item is placed into oil from room temperature, which is stirred from time to time, and item is cooled to room temperature.
EFFECT: improving quality owing to more homogeneous hardness of item made from chromium tool steel.
1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HEAT TREATMENT OF STEEL | 2023 |
|
RU2814340C1 |
| METHOD FOR HEAT TREATMENT OF WORKPIECE FROM STAINLESS CHROMIUM STEEL | 2014 |
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| METHOD OF HARDENING HIGHER THAN 68,0 HRC IN PRODUCTS MADE OF TOOL STEEL | 2007 |
|
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| METHOD FOR MANUFACTURING PARTS FROM HIGH-CARBON STEELS | 2021 |
|
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| METHOD OF THERMOCYCLIC TREATMENT OF HIGHCHROMIUM TOOL STEEL FOR SECONDARY HARDNESS | 2000 |
|
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| HAND TOOLS AND HEAT TREATMENT METHOD OF TOOL | 2007 |
|
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| BURIN MAKING METHOD | 1998 |
|
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| METHOD OF STAMP STEEL TREATMENT | 0 |
|
SU771173A1 |
| METHOD FOR HEAT TREATING PRODUCTS | 0 |
|
SU973639A1 |
| PREPARATION OF STEEL STRUCTURE FOR FURTHER THERMAL TREATMENT | 2013 |
|
RU2526341C1 |
