GB420036A - Method of and apparatus for the manufacture of seamless pipes - Google Patents
Method of and apparatus for the manufacture of seamless pipesInfo
- Publication number
- GB420036A GB420036A GB717734A GB717734A GB420036A GB 420036 A GB420036 A GB 420036A GB 717734 A GB717734 A GB 717734A GB 717734 A GB717734 A GB 717734A GB 420036 A GB420036 A GB 420036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rollers
- pass
- diameter
- reducing rolls
- reducing
- 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.)
- Expired
Links
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)
- Metal Extraction Processes (AREA)
Abstract
420,036. Rolling tubes. BARON, H., 231, Strand, London.-(Alfina Immobilien- Finanzierungs-und Verwaltungs Akt. - Ges. ; Glarus, Switzerland). March 6, 1934, No. 7177. [Class 83 (iv)] A pipe blank 1 is reduced on a pushing mandrel 2 by forcing it through a series of undriven reducing rolls 5a, 5<b>, 5<c>, 5d, the feed being assisted by large driven rollers 7<a>, 7b. The diameter of the reducing rolls is less than twice the diameter of the pass, and the diameter of the feed rollers should be from 1¢ to 4 times the diameter of the pass. The reducing pass may consist of three or more rollers, and the feedings pass may consist of two rollers only. The smaller rollers 7<b> may be undriven and thus become partially reducing rolls. The arc of contact of the reducing rolls may be small or flattened to reduce friction.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA72205D DE648918C (en) | 1934-01-03 | 1934-01-07 | Process for the production of seamless tubes |
DEA72468D DE636741C (en) | 1934-01-03 | 1934-02-11 | Device for the production of seamless tubes |
GB717734A GB420036A (en) | 1934-03-06 | 1934-03-06 | Method of and apparatus for the manufacture of seamless pipes |
US748071A US2044358A (en) | 1934-01-03 | 1934-10-12 | Manufacture of seamless pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB717734A GB420036A (en) | 1934-03-06 | 1934-03-06 | Method of and apparatus for the manufacture of seamless pipes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB420036A true GB420036A (en) | 1934-11-23 |
Family
ID=9828076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB717734A Expired GB420036A (en) | 1934-01-03 | 1934-03-06 | Method of and apparatus for the manufacture of seamless pipes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB420036A (en) |
-
1934
- 1934-03-06 GB GB717734A patent/GB420036A/en not_active Expired
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