FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and can be used for production of rings from chromomanganese steels. Blank is formed at forming tool speed making at least 0.05 m/s. Said blank is formed by forming tool at speed of at least 5 m/s to initial ring blank. The latter is heated and rolled at rolls in two steps. At first step, it is heated and rolled to intermediate ring blank with OD making at least 0.95 of finished ring. The rolls are unclamped to cool down said intermediate ring blank. At second step, the latter is again heated to temperature lower than steel recrystallization temperature by at least 50°C and rolled to required sizes of finished article. Note here that forming forces are decreased while roll rpm is increased to mate rolled blank temperature drop.
EFFECT: higher strength.
2 cl, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MANUFACTURING METHOD OF BINDING RINGS FOR ROTORS OF TURBINE GENERATORS | 2019 |
|
RU2741048C1 |
| PROCESS FOR FORMING RINGS OF FINE-GRAIN STRUCTURE BLANKS | 2004 |
|
RU2271261C1 |
| METHOD OF PRODUCING THE ROLLED RINGS WITH REGULAR MICROSTRUCTURE | 2017 |
|
RU2659501C1 |
| BALL VALVE HALF-BODY AND PREPARATION METHOD THEREOF | 2014 |
|
RU2597852C2 |
| METHOD FOR PRODUCING RING BLANKS OF HIGH-ALLOY REFRACTORY ALLOYS | 2005 |
|
RU2301718C2 |
| METHOD OF MANUFACTURE OF DISTRIBUTION RING BLANKS FROM HIGH-ALLOY NICKEL ALLOYS | 2006 |
|
RU2335372C2 |
| METHOD FOR MAKING RECTANGULAR BILLET AND APPARATUS FOR PERFORMING THE SAME | 2000 |
|
RU2198064C2 |
| RING MAKING METHOD | 0 |
|
SU1696070A1 |
| PRODUCTION OF SEAMLESS HOT-WORKED MACHINED 610×36,53×3000-3450 mm FROM 15X5M-GRADE STEEL FOR REFINERY COMMUNICATIONS WITH STRINGENT REQUIREMENTS TO GEOMETRICAL SIZES | 2013 |
|
RU2537638C2 |
| METHOD OF ROLLING RING BLANKS | 0 |
|
SU1355335A1 |
