FIELD: rolled tube production, namely working tool of piercing mills, possibly for making conversion tubes of large and mean diameters from titanium base alloys in tube rolling plants with pilger mills, namely producing tube blanks for making bottles or other tube products.
SUBSTANCE: plug of piercing mill for piercing ingots and billets of titanium base alloys includes nose part in the form of cone, working part for deformation of sleeve wall, cylindrical band for forming inner diameter and for calibrating sleeve wall, inverse cone in the form of cylindrical stem with length L r.c. = (0.2 -).5) Lm and with diameter D r.c. = [Dm -(4 -5)] mm, where Lm - total length of plug, mm; Dm - diameter of plug, mm. Invention prevents partially or completely occurring of annular mushroom-shaped swellings on inner surface of sleeves.
EFFECT: shortened time period, improved condition of guiding plug to sleeve, elevated temperature of starting process of rolling sleeves to conversion tubes, lowered consumption of titanium base alloy, reduced cost of conversion of ingots or blanks of titanium base alloys to tube blanks.
2 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2517068C1 |
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|
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|
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| METHOD FOR PIERCING INGOTS AND BLANKS OF TITANIUM-BASE ALLOYS | 2005 |
|
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| 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 |
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|
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| METHOD FOR PRODUCING HOT ROLLED COMMERCIAL AND CONVERSION TUBES OF LARGE AND MEAN DIAMETERS OF HARD-TO-FORM STEELS AND ALLOYS IN TUBE ROLLING PLANTS WITH PILGER MILLS | 2006 |
|
RU2311979C1 |
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RU2322316C2 |
