FIELD: manufacture of rolled products. SUBSTANCE: method for thermal processing of rolled products, in particular, rod fittings of low-alloyed silico- manganese steels, involves cyclic water cooling of heated rolled product, with number of cycles being equal to two, at regulated cooling rate and supercooling surfaces of rolled product below temperature of Mh; providing intermediate and final warming of surfaces and final cooling in air. Method is characterized in that intermediate warming is carried out up to temperature Mn+(240-250) C and final warming is carried out up to temperature Mh+(50-70) C. Cooling during first and second cycles is provided at predetermined rates. Method is used for thermal processing of rolled products in small-section, rod or wire mills. EFFECT: improved strength and plastic characteristics of rolled products and reduced production costs. 1 tbl
Title | Year | Author | Number |
---|---|---|---|
METHOD OF HEAT TREATMENT OF ROLLED PRODUCTS | 1994 |
|
RU2081182C1 |
METHOD OF MAKING HIGH-STRENGTH HEAT-HARDENED REINFORCING-BAR STEEL | 2004 |
|
RU2287021C2 |
METHOD OF HEAT TREATMENT OF ROLLED PRODUCTS | 1995 |
|
RU2081189C1 |
METHOD OF THERMOMECHANICAL TREATMENT OF ROLLED PRODUCTS | 1999 |
|
RU2169198C2 |
HEAT TREATMENT METHOD FOR ROLLED PRODUCTS | 1992 |
|
RU2025503C1 |
METHOD OF HEAT TREATMENT OF ROLLED STOCK | 2002 |
|
RU2227811C1 |
METHOD OF PRODUCING HEAT-HARDENABLE REINFORCING ROD STEEL | 1999 |
|
RU2149193C1 |
0 |
|
SU1782241A3 | |
THERMAL-STRENGTHENED ROLLING PRODUCTION METHOD | 1992 |
|
RU2034043C1 |
PROCEDURE FOR FABRICATION OF ROD OF SCREW PROFILE | 2010 |
|
RU2425897C1 |
Authors
Dates
2003-09-27—Published
2001-11-02—Filed