GB445248A - Process for the manufacture of seamless metal tubes - Google Patents
Process for the manufacture of seamless metal tubesInfo
- Publication number
- GB445248A GB445248A GB29594/35A GB2959435A GB445248A GB 445248 A GB445248 A GB 445248A GB 29594/35 A GB29594/35 A GB 29594/35A GB 2959435 A GB2959435 A GB 2959435A GB 445248 A GB445248 A GB 445248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pass
- diameter
- tube
- roll
- mandrel
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 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)
- Forging (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
445,248. Rolling tubes. ALFINA IMMOBILIEN-FINANZIERUNGS & VERWALTUNGS AKT.-GES., Glarus, Switzerland. Oct. 26, 1935, No. 29594. Convention date, Oct. 27, 1934. [Class 83 (iv)] A cup-shaped billet is pushed by a mandrel through undriven tube-forming rolls which rapidly reduce the cross-section to at least <1>/5 of its initial area; the number of roll passes K1 to Kn are at least equal to the proportionate reduction (i.e. 5/1) and the ratio of roll diameter to pass diameter (i.e. tube diameter) varies from at least 0À3 in the first pass to at most 2À5 at the last pass. The trough diameter of the roll in the largest pass is smaller than the diameter of the pass and increases successively in each reducing pass until it is greater than the last pass diameter. These proportions are said to prevent the mandrel from pushing through or leaving the tube. The pass may be formed by three coacting rolls shaped so that only the middle 60 arc of the groove surface of each roll bears on the tube.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT445248X | 1934-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB445248A true GB445248A (en) | 1936-04-06 |
Family
ID=3674306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29594/35A Expired GB445248A (en) | 1934-10-27 | 1935-10-26 | Process for the manufacture of seamless metal tubes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2041937A (en) |
| GB (1) | GB445248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1118726B (en) * | 1956-06-12 | 1961-12-07 | Eugene Weiss Dipl Ing | Process, for example impact process, for stretching metallic hollow bodies, e.g. Pipes, over a mandrel and for this purpose trained non-round caliber rows |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2739372A (en) * | 1951-03-30 | 1956-03-27 | United States Steel Corp | Method of making propeller-blade blanks |
| NL207167A (en) * | 1955-05-17 | 1900-01-01 | Delta Kuehlschrank G M B H | |
| DE2333916C2 (en) * | 1973-07-04 | 1986-01-09 | Kocks Technik Gmbh & Co, 4010 Hilden | Calibration of the rolls of a reducing mill for tubes |
| IT1078828B (en) * | 1975-06-25 | 1985-05-08 | Mannesmann Roehren Werke Ag | CALIBRATION OF A THREE-CYLINDER REDUCING ROLLER TO AVOID THE FORMATION OF POLYGONS INSIDE THE PIPES ON THE OCCASION OF THE REDUCING LAMINATION OF THE PIPES |
| DE2844042A1 (en) * | 1978-10-09 | 1980-04-24 | Kocks Gmbh Friedrich | ROLLER ROLLER |
| EP0476793B1 (en) * | 1990-09-19 | 1995-04-19 | MANNESMANN Aktiengesellschaft | Rolling mill for stretching hollow blanks on a mandril |
| US6490900B1 (en) | 2000-10-11 | 2002-12-10 | American Cast Iron Pipe Company | Pipe gauging and rounding apparatus and method |
| CN102989913A (en) * | 2012-12-28 | 2013-03-27 | 太原通泽重工有限公司 | Steel tube necking mechanism |
-
1935
- 1935-10-23 US US46402A patent/US2041937A/en not_active Expired - Lifetime
- 1935-10-26 GB GB29594/35A patent/GB445248A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1118726B (en) * | 1956-06-12 | 1961-12-07 | Eugene Weiss Dipl Ing | Process, for example impact process, for stretching metallic hollow bodies, e.g. Pipes, over a mandrel and for this purpose trained non-round caliber rows |
Also Published As
| Publication number | Publication date |
|---|---|
| US2041937A (en) | 1936-05-26 |
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