FIELD: metallurgy industry.
SUBSTANCE: invention refers to thermal treatment procedure of forges intended for manufacturing parts and assemblies operating at low temperatures, for example containers for transporting and long-term storage (more than 50 years) of spent nuclear fuel. The result is achieved due to the fact that semi-finished product is subject to hardening from temperature which is above critical point Ac3, high-temperature tempering within temperature range of 620-670°C with cooling in the air and to additional tempering within temperature range of 400-450°C with exposure time of 3-3.5 hours with subsequent cooling in the air.
EFFECT: increasing cold resistance of low-carbon steels.
1 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR HEAT TREATMENT OF FLATS OUT OF LOW CARBON FERRITE-PEARLITE STEEL | 2009 |
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| THERMAL TREATMENT OF WELDS OF LOW-CARBON FERRITE-PERLITE STEELS | 2014 |
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