FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Proposed method comprises casting the ingots by electric slag remelting. Said ingots are machined to ingots-billets. Said ingots-billets are heated to ductility temperature. First, said ingots are pierced at helical rolling stand to make sleeves. The latter are cooled down and repaired, if required. Said sleeve billets are reheated from cold-charged state to ductility temperature. Said ingots are pierced at helical rolling stand to make sleeves, heat treated, etched, subjected to ultrasound control and accepted.
EFFECT: higher surface quality, lower metal input and higher efficiency of Pilger plant.
6 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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| PRODUCTION OF 550×25-30 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 | 2014 |
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| METHOD TO PRODUCE SEAMLESS PIPES WITH SIZE OF 377H14-60 MM FOR STEAM BOILERS, STEAM LINES AND HEADERS OF PLANTS WITH HIGH AND SUPERCRITICAL PARAMETERS OF STEAM FROM STEEL OF GRADE 10H9MFB-SH | 2012 |
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