GB386518A - Method of extruding metal sections with progressively diminishing cross-section - Google Patents
Method of extruding metal sections with progressively diminishing cross-sectionInfo
- Publication number
- GB386518A GB386518A GB1436032A GB1436032A GB386518A GB 386518 A GB386518 A GB 386518A GB 1436032 A GB1436032 A GB 1436032A GB 1436032 A GB1436032 A GB 1436032A GB 386518 A GB386518 A GB 386518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- section
- girders
- taper
- billet
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/08—Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Extrusion Of Metal (AREA)
Abstract
386,518. Squirting. MOND, A. L., 19, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) May 20, 1932, No. 14360. [Classes 83 (ii) and 83 (iv).] Making bars.- Girders, tubes, &c. of progressively -diminishing thickness of metal are formed by extruding a billet e through a die b with the use of a mandrel d of rapidly tapering cross section which travels through the die. A tube so formed has a constant outer but an increasing inner diameter. Girders with flanges steadily decreasing in thickness may be similarly formed with the use of one or more tapered mandrel members. In the formation of a form g, Fig. 4b, tapered in the same direction on the inner and outer faces, the outer part of the mandrel f is formed of a series of flat springs which yield to allow the section which is of slower taper than the mandrel, to expand the mandrel freely. The mandrel d may, if necessary be detachably secured to the ram c and be formed of a number of detachable parts. The mandrel may be formed to produce a steady taper, or the billet may not be shaped exactly to fit the mandrel, but itself be formed, when cast, to produce a steady taper. The process is applicable to alloys of copper, lead, aluminium, and magnesium, and to girders for aircraft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1436032A GB386518A (en) | 1932-05-20 | 1932-05-20 | Method of extruding metal sections with progressively diminishing cross-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1436032A GB386518A (en) | 1932-05-20 | 1932-05-20 | Method of extruding metal sections with progressively diminishing cross-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB386518A true GB386518A (en) | 1933-01-19 |
Family
ID=10039789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1436032A Expired GB386518A (en) | 1932-05-20 | 1932-05-20 | Method of extruding metal sections with progressively diminishing cross-section |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB386518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2512264A (en) * | 1948-10-06 | 1950-06-20 | Charles A Brauchler | Method of making propeller blades |
-
1932
- 1932-05-20 GB GB1436032A patent/GB386518A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2512264A (en) * | 1948-10-06 | 1950-06-20 | Charles A Brauchler | Method of making propeller blades |
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