FIELD: process engineering.
SUBSTANCE: invention relates to pipe rolling. Billets are heated to ductility temperature and pieced at helical rolling mill at 325 mm diameter mandrel to 660×in.340×1590 mm sleeves-billets Said cold-charged sleeves-billets are heated to ductility temperature and pierced-rolled at 525 mm diameter mandrel to 670×in.540×3130 mm sleeves. Sleeves are tolled at Pilger mill to commercial 550×25×8000 mm pipes at rolls with body diameter of 1150 mm, flat die central angle of 90°, finishing section central angle of 40° and lengthwise taper angle of 40°. Roll rpm is set to 30 rpm, mean feeder backstroke - 1180 mm while mean feed of sleeves to source of strain - 18.5 mm.
EFFECT: decreased metal consumption factor.
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| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF SEAMLESS HOT-ROLLED MACHINED 610×36,53 mm PIPES OF 15X5M GRADE STEEL FOR COMMUNICATIONS OF REFINERIES | 2013 |
|
RU2545948C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED 530 MM AND 550 MM DIAMETER PIPES AT PRU WITH PILGER MILLS FOR STEAM BOILERS, STEAM LINES AND MANIFOLDS OF UNITS OPERATING WITH HIGH AND SUPERCRITICAL PARAMETERS OF STEAM | 2013 |
|
RU2545952C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 610×28-32×4700-5400 mm FROM "15Х1М1Ф"- AND "10Х9МФБ"-GRADE STEELS AT PRU 8-16'' WITH PILGER MILLS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING WITH HIGHER MECHANICAL PROPERTIES | 2012 |
|
RU2522514C1 |
| 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 HOT-ROLLED PIPES SIZED TO 630×28-32×4800-5500 mm FROM "15Х1М1Ф" AND "10Х9МФБ-Ш"-GRADE STEELS AT PRU 8-16" WITH PILGER MILLS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING WITH HIGHER MECHANICAL PROPERTIES | 2012 |
|
RU2530090C2 |
| PRODUCTION OF SEAMLESS HOT-ROLLED PIPES SIZED TO 610×28-32 mm FROM "15Х1М1Ф"- AND "10Х9МФБ-Ш"-GRADE STEELS AT PRU 8-16'' WITH PILGER MILLS FOR PIPELINES OF BOILER UNIT STEAM INTERMEDIATE OVERHEATING WITH HIGHER MECHANICAL PROPERTIES | 2012 |
|
RU2523394C1 |
| MANUFACTURING METHOD OF SEAMLESS HOT-ROLLED TUBES ON PIPE ROLLING UNITS WITH PILGER MILLS FOR STEAM BOILERS, STEAM LINES AND HEADERS OF UNITS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS | 2013 |
|
RU2545942C2 |
| 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 |
| PRODUCTION OF SEAMLESS HOT-WORKED MACHINED PIPES WITH SIZE 530(16 MM WITH INCREASED ACCURACY OUT OF STEEL GRADE "08X18H10T" FOR NUCLEAR POWER ENGINEERING STRUCTURES | 2013 |
|
RU2554250C1 |
| METHOD OF PRODUCTION OF SEAMLESS HOT-WORKED BOILER AND STEAM LINE 530×30-75 MM PIPES FROM "10Х9К3В2МФБР-Ш " GRADE REFRACTORY STEEL FOR POWER EQUIPMENT WITH STEAM SUPERCRITICAL PARAMETERS | 2014 |
|
RU2558319C1 |
