发明名称 |
PRODUCTION OF 465×15-60 mm SEAMLESS HOT-ROLLED PIPES FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDS OF PLANTS WITH HIGH AND SUPERHIGH STEAM PARAMETERS FROM ESR INGOTS OF 10?9???-?-GRADE STEEL |
摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to pipe rolling. ESR ingots are turned to drill central 100±5 mm bore to get ingots-billets sized to 565×100×1750±50 mm. Ingots-billets are heated to 1200-1210°C and pierced to 580×290×2040-2160 mm with diameter increase of 2.5-2.8%. Reheating is performed from cold charging to 1190-1200°C, ingots-billets are pierced-rolled with diameter increase of 3.4-3.5% and rolled to commercial pipes at Pilger mill. Rolling at Pilger mill is performed with feed of, where m-15-16 is geed at rolling pipes with wall depth of 21 mm; µis rolling-out at 426mm-dia pipes with iwall depth. Process wastes are cut by hot cutting saw, pipes are straightened at six-roll straightener, heat treated, etched and subjected to ultrasound control and acceptance.EFFECT: higher mechanical properties and precision of pipe sizes.2 tbl |
申请公布号 |
RU2542145(C2) |
申请公布日期 |
2015.02.20 |
申请号 |
RU20130112451 |
申请日期 |
2013.03.19 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "CHELJABINSKIJ TRUBOPROKATNYJ ZAVOD" |
发明人 |
SAF'JANOV ANATOLIJ VASIL'EVICH;FEDOROV ALEKSANDR ANATOL'EVICH;TAZETDINOV VALENTIN IREKLEEVICH;DUB ALEKSEJ VLADIMIROVICH;VORONIN ANATOLIJ ANDREEVICH;SKOROBOGATYKH VLADIMIR NIKOLAEVICH;SHCHENKOVA IZABELLA ALEKSEEVNA;GOLOVINOV VALERIJ ALEKSANDROVICH;KLIMOV NIKOLAJ PETROVICH;SAF'JANOV ALEKSANDR ANATOL'EVICH;MATJUSHIN ALEKSANDR JUR'EVICH;BARICHKO VLADIMIR SERGEEVICH;BUBNOV KONSTANTIN EHDUARDOVICH;EREMIN VIKTOR NIKOLAEVICH |
分类号 |
B21B19/04 |
主分类号 |
B21B19/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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