GB1343601A - Tubular metal elements - Google Patents
Tubular metal elementsInfo
- Publication number
- GB1343601A GB1343601A GB5382570A GB1343601DA GB1343601A GB 1343601 A GB1343601 A GB 1343601A GB 5382570 A GB5382570 A GB 5382570A GB 1343601D A GB1343601D A GB 1343601DA GB 1343601 A GB1343601 A GB 1343601A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- tapering
- constant
- tubes
- initial
- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
- B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Extrusion Of Metal (AREA)
Abstract
1343601 Making lamp-posts, masts etc.; stamping; extruding E C FRATER 8 Nov 1971 [12 Nov 1970] 53825/70 Headings B3A and B3Q Externally tapered metal tubes are made by fluid-inflating tubes of variable wall thickness so as to reduce the variation. Lamp-posts, ship's masts or booms may be formed in steel or aluminium alloy. The initial tube may be of constant or tapering external or internal crosssection, e.g. the external cross-section may be circular, oval, D-shape or of streamline form. In the example, the initial tube is formed by extruding a hollow billet on a tapering mandrel through a die (8), Fig. 1 (not shown), to form a tube having a constant outside diameter and a tapering bore. The mandrel (12) may be free, fixed to an extrusion ram (4) or moved at a different rate from that of the ram. Fluidinflation follows with axial pressure applied by members 16, 18 to form a tapered tube of constant wall-thickness. The necked end (22), Fig. 3 (not shown), may be removed. Aluminium alloy initial tubes may be annealed before inflation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5382570 | 1970-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1343601A true GB1343601A (en) | 1974-01-16 |
Family
ID=10469108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5382570A Expired GB1343601A (en) | 1970-11-12 | 1970-11-12 | Tubular metal elements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1343601A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1007128A3 (en) * | 1992-11-03 | 1995-04-04 | Picanol Nv | Method for manufacturing a pipe with a random flow section |
US6116074A (en) * | 1997-04-23 | 2000-09-12 | Daimler-Benz Aktiengesellschaft | Extrusion arrangement and process for manufacturing hollow-profile workpieces made of metal |
CN106311785A (en) * | 2016-10-20 | 2017-01-11 | 瑞安市金裕铝业有限公司 | Aluminum alloy aluminum bar and method for manufacturing aluminum lamp through aluminum alloy aluminum bar |
-
1970
- 1970-11-12 GB GB5382570A patent/GB1343601A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1007128A3 (en) * | 1992-11-03 | 1995-04-04 | Picanol Nv | Method for manufacturing a pipe with a random flow section |
US6116074A (en) * | 1997-04-23 | 2000-09-12 | Daimler-Benz Aktiengesellschaft | Extrusion arrangement and process for manufacturing hollow-profile workpieces made of metal |
CN106311785A (en) * | 2016-10-20 | 2017-01-11 | 瑞安市金裕铝业有限公司 | Aluminum alloy aluminum bar and method for manufacturing aluminum lamp through aluminum alloy aluminum bar |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |