WO2007145737A3 - Creep forming and stress relieving in metal bar - Google Patents

Creep forming and stress relieving in metal bar Download PDF

Info

Publication number
WO2007145737A3
WO2007145737A3 PCT/US2007/011037 US2007011037W WO2007145737A3 WO 2007145737 A3 WO2007145737 A3 WO 2007145737A3 US 2007011037 W US2007011037 W US 2007011037W WO 2007145737 A3 WO2007145737 A3 WO 2007145737A3
Authority
WO
WIPO (PCT)
Prior art keywords
metal bar
temperature
forming
inch
die
Prior art date
Application number
PCT/US2007/011037
Other languages
French (fr)
Other versions
WO2007145737A2 (en
Inventor
Kuninori Minakawa
Arvind R Keskar
Adrian Barb
Original Assignee
Rti Int Metals Inc
Kuninori Minakawa
Arvind R Keskar
Adrian Barb
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 Rti Int Metals Inc, Kuninori Minakawa, Arvind R Keskar, Adrian Barb filed Critical Rti Int Metals Inc
Priority to JP2009515392A priority Critical patent/JP2009539620A/en
Priority to EP07756226A priority patent/EP2049279A2/en
Publication of WO2007145737A2 publication Critical patent/WO2007145737A2/en
Publication of WO2007145737A3 publication Critical patent/WO2007145737A3/en

Links

Classifications

    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/02—Bending by stretching or pulling over a die
    • 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
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools

Abstract

A hot creep stretch wrap forming method includes heating a metal bar (16) to a forming temperature within a temperature range suitable for creep deformation thereof, applying a stretching force to the metal bar at a strain rate no greater than 0.05 inch/inch/second, And wrapping the metal bar around a die (12), preferably having a thermally and /or electrically insulative work surface (34, 36). The stretching force is typically applied to a strain ranging from 0.5% to 15.0%. The metal bar (16) most preferably is a titanium alloy with a forming temperature ranging from 0.45 to 0.60 of its melting temperature. The wrapped metal bar is held in position and its temperature maintained within the temperature range typically for 5 to 120 minutes for stress relief. Preferably, the metal bar (16) is held substantially at the forming temperature throughout the process. Thermal insulation (62) around the die and metal bar reduce heat loss form the metal bar.
PCT/US2007/011037 2006-06-15 2007-05-08 Creep forming and stress relieving in metal bar WO2007145737A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009515392A JP2009539620A (en) 2006-06-15 2007-05-08 Creep forming and stress relaxation of metal bars
EP07756226A EP2049279A2 (en) 2006-06-15 2007-05-08 Method and apparatus for creep forming of and relieving stress in an elongated metal bar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/455,052 2006-06-15
US11/455,052 US20070261463A1 (en) 2006-05-11 2006-06-15 Method and apparatus for creep forming of and relieving stress in an elongated metal bar

Publications (2)

Publication Number Publication Date
WO2007145737A2 WO2007145737A2 (en) 2007-12-21
WO2007145737A3 true WO2007145737A3 (en) 2008-08-07

Family

ID=38832259

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/011037 WO2007145737A2 (en) 2006-06-15 2007-05-08 Creep forming and stress relieving in metal bar

Country Status (6)

Country Link
US (1) US20070261463A1 (en)
EP (1) EP2049279A2 (en)
JP (1) JP2009539620A (en)
KR (1) KR20090018791A (en)
CN (1) CN101466485A (en)
WO (1) WO2007145737A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8210020B2 (en) * 2009-02-25 2012-07-03 Rti International Metals, Inc. Hot stretch forming die having distortion-minimizing characteristics
US20130094919A1 (en) * 2011-10-14 2013-04-18 Bell Helicopter Textron Inc. System and method of manufacturing a structure with a high performance metal alloy
US10149362B2 (en) 2013-08-01 2018-12-04 Power Integrations, Inc. Solid state lighting control with dimmer interface to control brightness
CN104438496B (en) * 2014-10-10 2016-09-14 北京航空航天大学 A kind of curved couveuse of section bar hot-drawn and temperature control system thereof
CN110976581B (en) * 2019-11-13 2021-02-05 北京航空航天大学 Heat preservation tool for hot stretch bending of section bar
CN113070406B (en) * 2021-05-14 2022-04-29 中南大学 Flexible die applied to creep age forming and creep age forming method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722068A (en) * 1971-02-22 1973-03-27 Northrop Corp Method for forming titanium sheets
US3920175A (en) * 1974-10-03 1975-11-18 Rockwell International Corp Method for superplastic forming of metals with concurrent diffusion bonding
US3927817A (en) * 1974-10-03 1975-12-23 Rockwell International Corp Method for making metallic sandwich structures
US4030172A (en) * 1976-07-08 1977-06-21 Gentry Elvin O Crankshaft-forming apparatus and method
US4117970A (en) * 1976-11-16 1978-10-03 Rockwell International Corporation Method for fabrication of honeycomb structures
US4354369A (en) * 1980-05-16 1982-10-19 Rockwell International Corporation Method for superplastic forming
US5819572A (en) * 1997-07-22 1998-10-13 General Motors Corporation Lubrication system for hot forming

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952767A (en) * 1960-09-13 Thermo stretch forming of metal
US2486817A (en) * 1948-11-24 1949-11-01 Glenn L Martin Co Apparatus for stretch forming hard metal alloys
US3021887A (en) * 1956-07-19 1962-02-20 Rohr Aircraft Corp Titanium stretch forming
US2905225A (en) * 1956-09-13 1959-09-22 Romeo A Lalli Stretch former with replaceable heated die and pivotally mounted draw bar
US3426569A (en) * 1967-01-31 1969-02-11 Cyril Bath Co Stretch forming machine and segmental adjustable die combination
US3452573A (en) * 1967-06-14 1969-07-01 Cyril Bath Co Stretch wrapping fixture and combination thereof with drawing dies and press
US3568490A (en) * 1968-09-27 1971-03-09 Fairchild Hiller Corp Method and apparatus for heat forming elongated metal panels
US3584487A (en) * 1969-01-16 1971-06-15 Arne H Carlson Precision forming of titanium alloys and the like by use of induction heating
US3934441A (en) * 1974-07-08 1976-01-27 Rockwell International Corporation Controlled environment superplastic forming of metals
US3933020A (en) * 1974-07-18 1976-01-20 Tre Corporation Method for stretch wrapping of panels
US3974673A (en) * 1975-04-07 1976-08-17 Rockwell International Corporation Titanium parts manufacturing
US4011429A (en) * 1975-10-20 1977-03-08 Northrop Corporation Hot stretch-wrap forming with resistance heating
US4188811A (en) * 1978-07-26 1980-02-19 Chem-Tronics, Inc. Metal forming methods
US4242899A (en) * 1979-03-05 1981-01-06 The United States Of America As Represented By The Secretary Of The Air Force Thermoclamps
US4268246A (en) * 1979-09-21 1981-05-19 Chicago Bridge & Iron Company Method and apparatus for metal object heat treatment
US4406393A (en) * 1981-03-23 1983-09-27 Rockwell International Corporation Method of making filamentary reinforced metallic structures
FR2620956A1 (en) * 1987-09-29 1989-03-31 Inst Francais Du Petrole METHOD FOR FORMING TITANIUM OR TITANIUM ALLOY SURFACE SHEET ELEMENT
US4984348A (en) * 1989-01-17 1991-01-15 Rohr Industries, Inc. Superplastic drape forming
US5119535A (en) * 1989-09-18 1992-06-09 The Boeing Company Method of reconfiguring rigid and semirigid structures
US5687900A (en) * 1995-03-28 1997-11-18 Mcdonnell Douglas Corporation Structural panel having a predetermined shape and an associated method for superplastically forming and diffusion bonding the structural panel
US5823034A (en) * 1997-10-10 1998-10-20 Hyperform Technologies, Inc. Superplastic metalforming with self-contained die
US6047583A (en) * 1999-05-10 2000-04-11 General Motors Corporation Seal bead for superplastic forming of aluminum sheet
WO2000074441A1 (en) * 1999-06-01 2000-12-07 Mehmet Terziakin Instant heating process with electric current application to the workpiece for high strength metal forming
US6564606B2 (en) * 2000-06-16 2003-05-20 Nhk Spring Co., Ltd. Manufacturing method and manufacturing apparatus for metallic bellows
DE10063287B4 (en) * 2000-12-19 2007-05-03 Airbus Deutschland Gmbh Method for forming a metal sheet
US6776020B2 (en) * 2002-10-11 2004-08-17 General Motors Corporation Method for stretching forming and transporting and aluminum metal sheet
US7850058B2 (en) * 2004-03-31 2010-12-14 The Boeing Company Superplastic forming of titanium assemblies
US7533794B2 (en) * 2004-03-31 2009-05-19 The Boring Company Superplastic forming and diffusion bonding of fine grain titanium
US20060230807A1 (en) * 2005-04-14 2006-10-19 Shultz Stephen W Creep forming a work piece
US7669452B2 (en) * 2005-11-04 2010-03-02 Cyril Bath Company Titanium stretch forming apparatus and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722068A (en) * 1971-02-22 1973-03-27 Northrop Corp Method for forming titanium sheets
US3920175A (en) * 1974-10-03 1975-11-18 Rockwell International Corp Method for superplastic forming of metals with concurrent diffusion bonding
US3927817A (en) * 1974-10-03 1975-12-23 Rockwell International Corp Method for making metallic sandwich structures
US4030172A (en) * 1976-07-08 1977-06-21 Gentry Elvin O Crankshaft-forming apparatus and method
US4117970A (en) * 1976-11-16 1978-10-03 Rockwell International Corporation Method for fabrication of honeycomb structures
US4354369A (en) * 1980-05-16 1982-10-19 Rockwell International Corporation Method for superplastic forming
US5819572A (en) * 1997-07-22 1998-10-13 General Motors Corporation Lubrication system for hot forming

Also Published As

Publication number Publication date
CN101466485A (en) 2009-06-24
EP2049279A2 (en) 2009-04-22
WO2007145737A2 (en) 2007-12-21
US20070261463A1 (en) 2007-11-15
KR20090018791A (en) 2009-02-23
JP2009539620A (en) 2009-11-19

Similar Documents

Publication Publication Date Title
WO2007133546A3 (en) Method and apparatus for creep forming of and relieving stress in an elongated metal bar
WO2007145737A3 (en) Creep forming and stress relieving in metal bar
WO2007000700A3 (en) Hair styling appliance
WO2008059242A3 (en) Process for forming metal alloy sheet components
WO2006011127A3 (en) Medical devices formed from shape memory alloys displaying a stress-retained martensitic state and method for use thereof
MY148425A (en) Process for hot rolling and for heat treatment of a steel strip
WO2007133392A3 (en) Rapid thermal response induction heating system for platen embossing
US20130037183A1 (en) Thermal treatment for the stress-relief of titanium alloy parts
WO2008009825A3 (en) Process for manufacturing hot-forged parts made of a magnesium alloy
KR20090008383A (en) Method and apparatus for hot forming elongated metallic bars
WO2009051134A1 (en) Magnesium hot rolling method and magnesium hot rolling apparatus
WO2009141565A3 (en) Method for treating an asbestos solid
KR970014875A (en) METHOD FOR MANUFACTURING MOISTURE MATERIAL FOR COPY ALLOY FOR STEEL STEEL CASTING AND METHOD THEREOF
BR9508144A (en) Method to increase the limit load of cold rolled steel profiles that is part of an in-line manufacturing process
JP6508568B2 (en) Method of correcting shape of material for turbine blade and method of manufacturing material for turbine blade
CN102399961A (en) Heat treatment process for improving GH4145 alloy pipe
HK1071171A1 (en) Aluminum-silicon alloys having improved mechanicalproperties
WO2004031418A3 (en) Method for manufacturing products by means of deformation at increased temperatures
CN103320596A (en) Manufacturing process of tin-phosphor bronze stretching rod
CN112935161A (en) Method for forming large flat die forging
TW200740556A (en) Manufacturing method of adjustable wrench and adjustable wrench from the manufacturing method
CN104076058B (en) Method for manufacturing anvil for thermal simulation testing machine
Jablonska et al. Investigation of properties and structure of the alloy based on intermetallic phase FeAl after hot plastic deformation
WO2007065380A3 (en) Method of production of high-strength low-alloyed steel pipes
Bourouga et al. The workpiece-die thermal contact during a hot forging process: validation of the thermal contact resistance assumption and influence of the workpiece constitutive law

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780022015.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07756226

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2007756226

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1020087028376

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2009515392

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU