FIELD: rolled tube production, namely piercing ingots and blanks of titanium base alloys, possibly production of conversion large- and mean-diameter tubes in tube rolling plants with pilger mills.
SUBSTANCE: method comprises steps of heating drilled blanks and ingots in muffles till yielding temperature; piercing them in skew rolling mill with use of short mandrel to sleeves at interim cooling of outer surface of ingots and blanks before piercing. Cooling down of ingots and blanks is realized at rotating them in air for time period t =0.45 Db where t - cooling down time period, s; Db - outer diameter of ingots and blanks, mm. Cooling down may be also realized with use of gaseous agent chemically neutral to titanium base alloys and fed onto surfaces of rotating ingots and blanks for time period t = 95xDbxC where Db - outer diameter of ingots and blanks, m; C - speed of gaseous chemically neutral agent, m/s. Revolution number of ingots and blanks is (2 - 5) rev/min. Gaseous agent is fed at speed (2 - 3) m/s.
EFFECT: elimination of slipping, jamming and distortions of blanks due to friction factor uniform along perimeter and length.
3 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| TITANIUM BASE ALLOY INGOTS AND BILLETS PIERCING METHOD FOR MAKING SLEEVES IN SKEW ROLLING MILLS | 2005 |
|
RU2296019C1 |
| TITANIUM BASE ALLOY INGOT AND BILLET PIERCING METHOD IN SKEW ROLLING MILLS | 2005 |
|
RU2318622C2 |
| METHOD FOR PIERCING INGOTS AND BILLETS OF TITANIUM BASE ALLOYS TO SLEEVES IN SKEW ROLLING MILLS | 2005 |
|
RU2311978C2 |
| PLUG OF MILL FOR PIERCING INGOTS AND BILLETS OF TITANIUM BASE ALLOYS | 2005 |
|
RU2297894C2 |
| ROLLING METHOD OF CONVERSION TUBES OF LARGE AND MEAN DIAMETERS FROM INGOTS AND BILLETS OF TITANIUM BASE ALLOYS IN TUBE ROLLING AGGREGATES WITH PILGER MILLS | 2005 |
|
RU2315672C2 |
| ESR BLANK-INGOT FOR PIERCING AND ROLLING-OFF AT TWO-ROLL SCREW ROLLING MILL TO REROLLED SLEEVES-BLANKS FOR PRODUCTION OF MACHINED 610×36,53×3200-3550 mm PIPES FROM "08X18H10T"-GRADE STEEL FOR NUCLEAR POWER ENGINEERING STRUCTURES | 2013 |
|
RU2530430C1 |
| PRODUCTION OF LARGE- AND MEDIUM-DIAMETER REROLLING PIPES FROM TITANIUM-BASED ALLOY INGOTS AND BLANKS AT PIPE ROLLING UNIT WITH PILGER MILL | 2012 |
|
RU2523372C2 |
| BILLET FOR PIERCING AND ROLLING AT HELICAL ROLLING TWO-ROLL MILL OF 650×"500BH"×3250-3650 mm SLEEVE-BILLET FOR THEIR REROLLING TO COMMERCIAL 610×36,53×3150-3550 mm PIPES OF 15X5M-GRADE STEEL COMMUNICATIONS OF OIL REFINERIES WITH HIGHER-PRECISION GEOMETRICAL SIZES | 2013 |
|
RU2533612C2 |
| METHOD FOR PRODUCING CONVERSION TUBES OF LARGE AND MEAN DIAMETERS IN TUBE ROLLING PLANTS WITH PILGER MILLS FROM INGOTS AND BILLETS OF TITANIUM BASE ALLOYS | 2005 |
|
RU2311240C2 |
| METHOD OF HEATING INGOTS AND BLANKS MADE FROM TITANIUM-BASED ALLOY FOR PIERCING IN SKEW ROLLING MILLS | 2005 |
|
RU2312153C2 |
