FIELD: rolled tube production, namely rolling conversion tubes of large and mean diameters in tube rolling plants with pilger mills from ingots and billets of titanium base alloys for further processing to commercial tubes by mechanical working or rolling in tube cold rolling mills.
SUBSTANCE: method comprises steps of rolling conversion tubes in pilger mill for further working them to commercial tubes, possibly by rolling in tube cold rolling mills along single-pass route at wall allowance ΔSm and conversion tubes for cold conversion- along multi-pass routes at wall allowance ΔSx where ΔSM = 16 -20 -allowance by wall thickness at conversion of conversion tubes to commercial ones by mechanical working or secondary rolling in tube cold rolling mills along single-pass route whose larger values are set for commercial tubes with large relation dt/st, mm; Δ Sx = 8 -12 - wall thickness allowance at conversion of conversion tubes to commercial ones by secondary rolling in tube cold rolling mill along multi-pass routes whose large values are set for commercial tubes with large relation dt/st, mm; dt - nominal outer diameter of commercial tubes, mm; st - nominal wall thickness of commercial tubes, mm, while relation of allowance values for mechanical working of outer and inner layers is determined according to expression ASmo/ASmi = ASxi/ASxo = 0.7 - 0.95 where less values ASo/ASi are set for commercial tubes with large relation dt/st; ASmo - wall thickness allowance at outer side at conversion of conversion tubes to commercial ones by mechanical working or rolling in tube cold rolling mills along single-pass route, mm; ASmi - wall thickness allowance at inner side at conversion of conversion tubes to commercial ones by mechanical working or rolling in tube cold rolling mills along single-pass route, mm; ASxo - wall thickness allowance at outer side at conversion of conversion tubes to commercial ones by rolling in tube cold rolling mills along multi-pass route, mm; ASxi - wall thickness allowance at inner side at conversion of conversion tubes to commercial ones by rolling in tube cold rolling mills along multi-pass route, mm.
EFFECT: reduced consumption factor of alloys, lowered cost of conversion and commercial tubes of titanium base alloys.
2 cl, 1 tbl
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| PRODUCTION METHOD OF TUBE STOCK OF LARGE AND MEDIUM DIAMETERS FROM TITANIUM-BASED ALLOYS | 2012 |
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| METHOD OF MANUFACTURE OF COLD DRAWN TRADE PIPES OF 273×10×8700-9500 mm SIZE FROM TITANIUM ALLOYS PT-1M AND PT-7M | 2017 |
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| METHOD OF COLD DRAWN TRADE PIPES MANUFACTURE OF 159x7x10000-11000 mm SIZE FROM TITANIUM ALLOYS PT-1M AND PT-7M | 2016 |
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| PRODUCTION OF SEAMLESS HOT-ROLLED MACHINED 610×36,53 mm PIPES OF 15X5M GRADE STEEL FOR COMMUNICATIONS OF REFINERIES | 2013 |
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| MANUFACTURING METHOD OF COLD-ROLLED MERCHANTABLE TUBES WITH SIZE OF 170×370 mm FROM STEEL GRADE "16Х12МВСФБР-Ш (ЭП823-Ш)" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
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| METHOD OF FABRICATION OF COMMERCIAL PIPES WITH SIZE 406,4+0,4/-0×14,38+0,28/-0,72 mm FROM TITANIUM ALLOY Gr 29 FOR FURTHER USE IN GEOTHERMAL WELLS CONSTRUCTION | 2013 |
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| 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 |
|
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| METHOD FOR PRODUCING BY ELECTROLAG REFINING INGOT-BLANKS OF HARD-TO-FORM STEELS AND ALLOYS AND FOR ROLLING OF THEM COMMERCIAL TUBES OF LARGE AND MEAN DIAMETERS IN TUBE ROLLING PLANTS WITH PILGER MILLS AND CONVERSION TUBES FOR FURTHER REROLLING IN TUBE COLD ROLLING MILLS | 2006 |
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| MANUFACTURING METHOD OF COLD-ROLLED MARKETABLE TUBES WITH DIMENSIONS OF 150×2×1200 mm WITH INCREASED ACCURACY AS TO DIAMETER AND WALL FROM STEEL GRADE "12Х12М1БФРУ-Ш" FOR FAST NEUTRON REACTORS OF NEW GENERATION | 2013 |
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RU2542147C1 |
