CA2076402A1 - Mandrel mill for seamless steel tubes - Google Patents
Mandrel mill for seamless steel tubesInfo
- Publication number
- CA2076402A1 CA2076402A1 CA 2076402 CA2076402A CA2076402A1 CA 2076402 A1 CA2076402 A1 CA 2076402A1 CA 2076402 CA2076402 CA 2076402 CA 2076402 A CA2076402 A CA 2076402A CA 2076402 A1 CA2076402 A1 CA 2076402A1
- Authority
- CA
- Canada
- Prior art keywords
- roll
- mandrel mill
- groove
- seamless steel
- steel tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 238000005096 rolling process Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
- B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Control Of Metal Rolling (AREA)
Abstract
A mandrel mill for rolling seamless steel tubes includes a plurality of roll stands each having a pair of rolls defining a roll groove therebetween, an axis of the rolls of each roll stand being orthogonal to the axis of the rolls of the adjacent roll stands. The mandrel mill further includes a mandrel bar disposed in the roll grooves configured by the roll stands. The ratio between the radius of curvature of a groove bottom of the groove and a distance between the groove bottom of the roll groove of the first stand ranges from 0.46 to 0.54, and that of the second stand ranges from 0.48 to 0.52.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3233835A JPH07102369B2 (en) | 1991-08-22 | 1991-08-22 | Mandrel mill |
JP233835/91 | 1991-08-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2076402A1 true CA2076402A1 (en) | 1993-02-23 |
CA2076402C CA2076402C (en) | 1996-03-05 |
Family
ID=16961316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2076402 Expired - Fee Related CA2076402C (en) | 1991-08-22 | 1992-08-19 | Mandrel mill for seamless steel tubes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0529943A3 (en) |
JP (1) | JPH07102369B2 (en) |
CA (1) | CA2076402C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008119706A (en) | 2006-11-09 | 2008-05-29 | Sumitomo Metal Ind Ltd | Mandrel mill and operation method thereof, and method for manufacturing seamless pipe |
JP5062522B2 (en) * | 2007-05-31 | 2012-10-31 | 住友金属工業株式会社 | Mandrel mill and seamless pipe manufacturing method |
CN114309076B (en) * | 2020-09-30 | 2023-05-16 | 宝武特种冶金有限公司 | Precision trimming method for ring hole type of seamless steel tube cold rolling mill |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58224155A (en) * | 1982-06-19 | 1983-12-26 | Kawasaki Steel Corp | Seamless two-phase stainless steel pipe and its manufacture |
JPS60106603A (en) * | 1983-11-15 | 1985-06-12 | Kawasaki Steel Corp | Manufacture of seamless steel pipe |
JPS6384720A (en) * | 1986-09-30 | 1988-04-15 | Kawasaki Steel Corp | Manufacture of seamless pipe by mandrel mill |
JPH01186205A (en) * | 1988-01-22 | 1989-07-25 | Nippon Steel Corp | Mandrel mill for manufacturing seamless steel tube |
JPH01284411A (en) * | 1988-05-09 | 1989-11-15 | Nkk Corp | Caliber roll for mandrel mill |
-
1991
- 1991-08-22 JP JP3233835A patent/JPH07102369B2/en not_active Expired - Fee Related
-
1992
- 1992-08-19 CA CA 2076402 patent/CA2076402C/en not_active Expired - Fee Related
- 1992-08-20 EP EP19920307612 patent/EP0529943A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0529943A3 (en) | 1993-06-30 |
JPH0550115A (en) | 1993-03-02 |
EP0529943A2 (en) | 1993-03-03 |
JPH07102369B2 (en) | 1995-11-08 |
CA2076402C (en) | 1996-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |