FIELD: process engineering.
SUBSTANCE: invention relates to pipe rolling. ESR ingots-billets sized to 640×1750 are heated to 1230-1250°C, pierced at helical rolling mill to sleeves sized to 670×int.465×2830 mm to be rolled at Pilger mill with jar carbon to rerolled 590×85×3900 mm pipes. Mot rolled Pilger heads are removed from rerolled pipes and seed ends, trimmed, bored and turned to 580±1.0×74.5±1.0×3300 mm jackets-billets. Steel "08X18H10T" 25±1.0 mm deep ply is arc welded on inner surface of the latter and re-bored to bimetal 580±1.0×int.430±1.0×95±1.0×3300 mm billets. The latter are heated to 1250-1260°C, blown and rolled at Pilger mill to hot rolled tube stock sized to 426×40×8500 mm and rerolled at CPR 450 mill to commercial cold-rolled bimetal 351×36×11000 mm pipes with clad ply depth of 7±2 mm of "08X18H10T" grade steel.
EFFECT: lower metal input, decreased clad ply flaws.
3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF "вн.279×36 (351×36)" AND "вн. 346×40" (426×40) mm PIPES FOR NUCLEAR POWER STATIONS FROM "10ГН2МФА" AND "08Х18Н10Т" GRADE STEELS WITH 7 mm INNER CLAD PLY | 2013 |
|
RU2542129C2 |
| BIMETAL BLANK FROM ("10ГН2МФА+08Х18Н10Т") GRADE STEELS AND ITS FABRICATION FOR PRODUCTION OF COLD-ROLLED BIMETAL OUT 279×36- AND OUT 346×40 mm SIZE PIPES WITH INNER CLAD 7±2 mm DEEP PLY FROM "08Х18Н10Т" GRADE STEEL FOR NUCLEAR POWER STRUCTURES | 2013 |
|
RU2554249C2 |
| METHOD TO PRODUCE HOT-ROLLED MECHANICALLY TREATED BIMETAL PIPES WITH SIZE VN279X36 (351X36) AND VN346X40 (426X40) MM FROM STEEL OF GRADES 10GN2MFA+08X18N10T WITH INTERNAL PLATING LAYER OF STEEL 08H18N10T WITH THICKNESS OF 7±2 MM | 2012 |
|
RU2516137C1 |
| BIMETAL BLANK OUT OF STEEL GRADES "10+=2¦LL" AND "08-18=10T" TO MANUFACTURE HOT-ROLLED, MACHINED, BIMETAL PIPES WITH SIZE "T=279(36" MM FOR NUCLEAR POWER FACILITIES | 2013 |
|
RU2567420C2 |
| PRODUCTION OF BIMETAL "T=279×36" (351×36) mm PIPES WITH INNER PLATING LAYER FROM "10ГН2МФА"- AND "08X18H10T"-GRADE STEELS FOR NUCLEAR POWER PLANT STRUCTURES | 2012 |
|
RU2523382C2 |
| PRODUCTION OF BILLETS WITH OUTER AND INNER PLATING PLIES FROM CORROSION-RESISTANT STEELS AND ALLOYS FOR PRODUCTION OF SEAMLESS THREE-LAYER HOT- AND COLD-ROLLED COMMERCIAL AND REROLLED LONGER-LIFE PIPES FOR GAS AND GAS CONDENSATE EXTRACTION IN HYDROGEN SULPHIDE-BEARING MEDIA, ITS TRANSPORTATION AND GENERAL PURPOSE PIPES | 2013 |
|
RU2535151C2 |
| MANUFACTURING METHOD OF THREE-LAYERED HOLLOW CENTRIFUGAL CAST SECTIONS FROM DIFFICULT-TO-FORM STEEL GRADES AND ALLOYS, WHICH ARE CLADDED WITH DUCTILE CARBON STEEL GRADES, AND ROLLING FROM THEM ON PIPE ROLLING UNITS WITH PILGER MILLS OF HOT-ROLLED MECHANICALLY TREATED MERCHANTABLE AND PROCESS PIPES OF LARGE AND MEAN DIAMETERS | 2013 |
|
RU2550040C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED 550×25 mm PIPES AT 8-16" PRU WITH PILGER MILLS | 2012 |
|
RU2547973C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 610×28-32×5300-6000 mm FROM "15Х1М1Ф"- AND "10Х9МФБ-Ш"-GRADE STEELS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING | 2012 |
|
RU2527523C2 |
| PRODUCTION OF SEAMLESS COLD-FORMED OIL-WELL TUBING SIZED TO 168,3×10,6×5000-10000 mm | 2013 |
|
RU2545950C2 |
