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 deforming

Info

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
Application number
FR7611055A
Other languages
French (fr)
Other versions
FR2347989B1 (en
Inventor
Jacques Decours
Jean Gavinet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7611055A priority Critical patent/FR2347989A1/en
Publication of FR2347989A1 publication Critical patent/FR2347989A1/en
Application granted granted Critical
Publication of FR2347989B1 publication Critical patent/FR2347989B1/fr
Granted legal-status Critical Current

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.
FR7611055A 1976-04-14 1976-04-14 Hot working large refractory alloy blanks - by enclosing in a sheath before deforming Granted FR2347989A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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