FIELD: process engineering.
SUBSTANCE: invention relates to pipe rolling. ESR blanks are heated to ductility temperature and pierced at screw rolling stand to sleeves-blanks. Jar carbon washers are heated to ductility temperature. Mandrel with mandrel ring is fitted into mandrel head, jar carbon washer is fitted on carbon ring, mandrel is fitted in sleeve or hollow ESR ingot-billet to fit jar carbon washer to get seed ends and composite billet. Jar carbon ring for making of seed ends has cylindrical and conical sections. Conical part of said jar washer is used to centre sleeve front end or that of hollow ingot-billets relative to mandrel axis. Assembled sleeve is shaped at variable-profile gages to steel pipe with seed end and pilgrim head fitted on carbon jar washers.
EFFECT: complete rolling of sleeve and hollow ingot-billet front ends.
5 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| PRODUCTION OF 465×75 MM SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS FROM ESR INGOTS OF "10Х9МФБ-Ш"-GRADE STEEL | 2012 |
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| METHOD OF PRODUCING OF TUBE STOCK SIZED TO 290X12 MM TO SPECS 8-16 | 2012 |
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| METHOD FOR PRODUCING INGOT-BLANKS BY ELECTROSLAG REFINING OF HARD-TO-FORM STEELS AND ALLOYS AND FOR ROLLING OF THEM COMMERCIAL TUBES OF LARGE AND MEAN DIAMETERS IN TUBE ROLLING PLANTS WITH PILGER MILLS AND CONVERSION TUBES FOR REROLLING IN TUBE COLD ROLLING MILLS | 2006 |
|
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| METHOD FOR PRODUCTION OF BAR-INGOTS BY ELECTROSLAG REMELT FROM ALLOYED AND LOW-ALLOYED STEEL GRADES, ROLLING OF COMMERCIAL AND CONVERSION PIPES OF LARGE AND MEDIUM DIAMETERS ON TUBE-ROLLING PLANTS WITH PILGER ROLLING MILL | 2006 |
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|
RU2517068C1 |
