FIELD: process engineering.
SUBSTANCE: invention relates to production of seamless three-layer pipes with outer and inner plating layers. Ingots are cast by ESR from "10ГН2МФА"-grade steel. Central bore is drilled therein and ingots are heated to ductility temperature. First, said ingots are rolled at helical rolling stand to sleeves. The latter are rolled at Pilger mills to thick-wall hot-rolled pipes to be turned and pierced to pipe billets of required size. 08X18H10T-grade steel ply is built up on inner layer while bimetallic billets ate bored to commercial pipes with preset depth of walls of parent metal and plating plies. Note here that outer and inner surfaces of 219-630×1200-3200±50 mm pipe billets are coated by electric welding with plating plies of rustproof steels and alloys, their depth being defined by mathematical relationships.
EFFECT: lower metal and alloy input, pipe longer life.
3 cl
| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF BIMETAL 351×36 mm PIPES FOR NUCLEAR POWER STATIONS FROM "10ГН2МФА"-GRADE STEEL WITH INTERNAL CLAD PLY OF "08X18H10T" STEEL | 2013 |
|
RU2545933C2 |
| 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 |
| 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 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 |
| 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 |
| 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 |
| 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 COLD-FORMED OIL-WELL TUBING SIZED TO 168,3×10,6×5000-10000 mm | 2013 |
|
RU2545950C2 |
| METHOD OF PRODUCTION OF COLD-ROLLED PIPES WITH SIZE VN346(40 MM FROM STEEL OF GRADE "08-18=10T-+" FOR NUCLEAR POWER ENGINEERING FACILITIES | 2013 |
|
RU2547054C2 |
| PRODUCTION OF 299×10-60 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS OF "10Х9МФБ-Ш"-GRADE STEEL | 2012 |
|
RU2522512C1 |
