FR2347989A1 - Hot working large refractory alloy blanks - by enclosing in a sheath before deforming - Google Patents
Hot working large refractory alloy blanks - by enclosing in a sheath before deformingInfo
- Publication number
- FR2347989A1 FR2347989A1 FR7611055A FR7611055A FR2347989A1 FR 2347989 A1 FR2347989 A1 FR 2347989A1 FR 7611055 A FR7611055 A FR 7611055A FR 7611055 A FR7611055 A FR 7611055A FR 2347989 A1 FR2347989 A1 FR 2347989A1
- Authority
- FR
- France
- Prior art keywords
- sheath
- enclosing
- hot working
- refractory alloy
- sheath before
- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
-
- 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
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- 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
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Forging (AREA)
Abstract
Large parts made of refractory alloys are plastically deformed by placing the part in an sheath of thickness >0.5 mm, the sheath having a lower resistance hot plastic deformation than the part, and plastically deforming the alloy in the heated state. The sheath is subsequently removed. Refractory alloys normally difficult to hot work are shaped into tubes, wires, bars, etc. The composite part/sheath is easier to deform than the part on its own. The sheath retains the heat ensuring that the part is practically at a uniform temp. Defects in the refractory alloy are avoided. In the case of drawing the sheath transmits the pressure to the part and the process is almost hydrostatic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7611055A FR2347989A1 (en) | 1976-04-14 | 1976-04-14 | Hot working large refractory alloy blanks - by enclosing in a sheath before deforming |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7611055A FR2347989A1 (en) | 1976-04-14 | 1976-04-14 | Hot working large refractory alloy blanks - by enclosing in a sheath before deforming |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2347989A1 true FR2347989A1 (en) | 1977-11-10 |
FR2347989B1 FR2347989B1 (en) | 1981-02-13 |
Family
ID=9171847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7611055A Granted FR2347989A1 (en) | 1976-04-14 | 1976-04-14 | Hot working large refractory alloy blanks - by enclosing in a sheath before deforming |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2347989A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0277690A2 (en) * | 1987-02-03 | 1988-08-10 | Philips Patentverwaltung GmbH | Method of making tungsten steel articles by mechanically bending a sheet of tungsten steel |
-
1976
- 1976-04-14 FR FR7611055A patent/FR2347989A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0277690A2 (en) * | 1987-02-03 | 1988-08-10 | Philips Patentverwaltung GmbH | Method of making tungsten steel articles by mechanically bending a sheet of tungsten steel |
EP0277690A3 (en) * | 1987-02-03 | 1990-05-02 | Philips Patentverwaltung GmbH | Method of making tungsten steel articles by mechanically bending a sheet of tungsten steel |
Also Published As
Publication number | Publication date |
---|---|
FR2347989B1 (en) | 1981-02-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licenses | ||
ST | Notification of lapse |