FIELD: heat treatment of long products. SUBSTANCE: method for treatment of long products includes heating of product to temperature of austenization, passing the product through diaphragm which prevents contact of hot furnace gas with hardening medium. In this case, time of exposure to air does not exceed 3 s. Then, product is passed through aqueous solution of high-molecular substances and cooled at the rate of 50-130 C/s to temperature below the temperature of medium decomposition. Hardening medium is continuously circulated and cooled. EFFECT: higher efficiency. 1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| ELONGATE ARTICLE THERMAL TREATMENT UNIT | 1992 |
|
RU2009216C1 |
| 0 |
|
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| METAL HARDENING MEDIUM | 1999 |
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| METHOD OF ZINC-PLATING OF CONTINUOUS STEEL ARTICLES | 0 |
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| METHOD OF HEAT TREATMENT OF LONG-MEASURED ARTICLES SHAFT-LIKE | 1991 |
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| METHOD FOR HEAT TREATMENT OF DRAWN ARTICLES AND INSTALLATION FOR PERFORMING THE SAME | 1997 |
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RU2116360C1 |
