FR2298380A1 - Procede de fabr - Google Patents
Procede de fabrInfo
- Publication number
- FR2298380A1 FR2298380A1 FR7501966A FR7501966A FR2298380A1 FR 2298380 A1 FR2298380 A1 FR 2298380A1 FR 7501966 A FR7501966 A FR 7501966A FR 7501966 A FR7501966 A FR 7501966A FR 2298380 A1 FR2298380 A1 FR 2298380A1
- Authority
- FR
- France
- Prior art keywords
- prodn
- wall tubes
- sectional area
- increased cross
- die blocks
- 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
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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- 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
-
- 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
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501966A FR2298380A1 (fr) | 1975-01-22 | 1975-01-22 | Procede de fabr |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501966A FR2298380A1 (fr) | 1975-01-22 | 1975-01-22 | Procede de fabr |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2298380A1 true FR2298380A1 (fr) | 1976-08-20 |
FR2298380B1 FR2298380B1 (fr) | 1977-07-15 |
Family
ID=9150162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7501966A Granted FR2298380A1 (fr) | 1975-01-22 | 1975-01-22 | Procede de fabr |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2298380A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865959A1 (fr) * | 2004-02-09 | 2005-08-12 | Cci | Procede de fabrication d'elements constitutifs de bancs de moulage de poutrelles precontraintes |
-
1975
- 1975-01-22 FR FR7501966A patent/FR2298380A1/fr active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865959A1 (fr) * | 2004-02-09 | 2005-08-12 | Cci | Procede de fabrication d'elements constitutifs de bancs de moulage de poutrelles precontraintes |
Also Published As
Publication number | Publication date |
---|---|
FR2298380B1 (fr) | 1977-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |