FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, in particular, to production of steels with lowered (LH) and regulated hardenability (RH) in open-hearth, electric-arc, induction furnaces and oxygen converters. Proposed method comprises loading of charge into melt aggregates from iron-carbon alloy, scrap with specified content of manganese, silicon, chrome, nickel, copper; content of each of them is expanded compared to known methods of steel making RH and LH, which simplifies the process.
EFFECT: invention makes it possible to strictly comply with the specified chemical composition of RH and LH steel by content of carbon and value of ideal critical diameter of quenching (D id_cr_) at preset size of actual austenite grain to be obtained during final thermal treatment of parts.
3 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF THERMAL TREATMENT OF PARTS FROM STRUCTURAL STEEL OF LOWER AND REGULATED HARDENABILITY | 2010 |
|
RU2450060C1 |
| STRUCTURAL STEEL FOR VOLUME-SURFACE HARDENING | 2011 |
|
RU2450079C1 |
| METHOD FOR MAKING STRUCTURAL STEEL OF REDUCED AND SPECIFIED HARDNESS PENETRATION | 2010 |
|
RU2451090C1 |
| METHOD OF HEAT TREATMENT OF STEELS WITH LOW (LH) AND REGULATED (RH) HARDENING ABILITY OF 4TH GENERATION | 2019 |
|
RU2739462C1 |
| METHOD OF OPEN HEARTH MAKING OF LOW-HARDENABILITY STRUCTURAL STEEL | 2000 |
|
RU2164536C1 |
| OIL COUNTRY TUBULAR GOODS OF HEAVY-DUTY | 2007 |
|
RU2352647C1 |
| TUBE STOCK OUT OF MICRO ALLOYED STEEL | 2006 |
|
RU2336320C1 |
| METHOD FOR PRODUCING ROLLED SHEETS 8-50 mm THICK FROM COLD-RESISTANT HIGH-STRENGTH HIGH-RIGID STEEL | 2023 |
|
RU2808637C1 |
| ROUND ROLLED STOCK FROM BORON-CONTAINING STEEL OF INCREASED HARDENING CAPACITY | 2011 |
|
RU2469106C1 |
| TUBE STOCK OUT OF ALLOYED HEAT RESISTANT STEEL | 2006 |
|
RU2336330C1 |
