FIELD: metallurgy.
SUBSTANCE: method includes manufacturing of jackets from bars of electroslag steel of grade 10GN2MFA, manufacturing of cylindrical bushings from bars of electroslag steel of grade 08H18N10t and manufacturing of end rings from solid-cast stocks of carbon steel grades. In electroslag bars they drill through holes, then they heat them to plasticity temperature, stitched in a cross-rolling mill on mandrels into cartridges, which are rolled in a pilgrim mill into tube stocks. Tube stocks with size 535×vn.245×2600-2650 and 585×vn.240×1800-1850 mm from steel 10GN2MFA are bored and turned into cylindrical jackets-stocks with size 520±1.0×vn.265+1.0/-0×1300 and 570±1.0×vn.255+1.0/-0×1750 mm. Tube stocks with size 280×77×4000 and 270×82.5×3700 mm from steel 08H18N10T are bored and turned into cylindrical bushings with size 265+0/-1.0×52.5×1300 and 255+0/-1.0×57.5×1750 mm. Solid-cast stocks of carbon steels with diameter 550 and 600 mm are bored, a through hole is drilled in stocks, and they are welded with a solid seam to one of sides of cylindrical jackets to form sleeves. Cylindrical bushings are inserted into formed sleeves and are connected by welding assembly seams with jackets and end rings. Produced bimetal stocks are heated to temperature 1250-1260°C, stitched into the cross-rolling mill into bimetal cartridges with size 540×vn.315×1910 and 600×vn.365×2700 mm, which are rolled on a pilgrim mill into hot-rolled tube stocks with size 371×50.5×4500 and 446×54×5100 mm. Hot-rolled tube stocks are bored and turned into finished bimetal pipes.
EFFECT: reduced number of pipe defects in thickness of a plating layer.
6 cl, 1 dwg, 2 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 |
| 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 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 |
| 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 |
| MANUFACTURING METHOD OF SEAMLESS PIPES WITH DIMENSIONS OF 299×10-13 mm FOR STEAM BOILERS, STEAM LINES AND HEADERS OF PLANTS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS FROM INGOTS OF ELECTROSLAG REMELTING OF STEEL GRADE "10Х9МФБ-Ш" | 2013 |
|
RU2545963C2 |
| 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 FROM ESR INGOTS OF "10Х9МФБ-Ш"-GRADE STEEL | 2012 |
|
RU2522513C1 |
| PRODUCTION OF 273×9-15 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 |
|
RU2530099C2 |
