JPS61111726A - Working method for pipe end of steel pipe - Google Patents

Working method for pipe end of steel pipe

Info

Publication number
JPS61111726A
JPS61111726A JP23180384A JP23180384A JPS61111726A JP S61111726 A JPS61111726 A JP S61111726A JP 23180384 A JP23180384 A JP 23180384A JP 23180384 A JP23180384 A JP 23180384A JP S61111726 A JPS61111726 A JP S61111726A
Authority
JP
Japan
Prior art keywords
face
steel pipe
end part
metal die
pipe
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.)
Pending
Application number
JP23180384A
Other languages
Japanese (ja)
Inventor
Masaaki Inoue
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP23180384A priority Critical patent/JPS61111726A/en
Publication of JPS61111726A publication Critical patent/JPS61111726A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00Flanging or other edge treatment, e.g. of tubes
    • B21D19/08Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws

Abstract

PURPOSE:To form a piping joint with a press work without a skill fullness by folding back the face of the end part with inserting the second metal die into the expanded steel pipe end part after expanding the pipe so that the face of the end part can be inclined for the axial core with inserting the first metal die into the end part of a steel pipe. CONSTITUTION:A metal die 11 has a tapered face 11a and the diameter A of an inserting part is approximately same as the inner diameter of a steel pipe 10. The angle made by the tapered face 11a and the axial core of the steel pipe 10 is 45 deg.. The pipe expansion is then performed with inserting the metal die 11 into the end part 10a of the steel pipe 10 at the first step. a metal die 12 has the folded back face 12b which is at right angle to the axial core in continuation to a curved face 12a and also the diameter A of the inserting part is almost equal to the inner diameter of the steel pipe 10. And it is inserted into the end part 10a of the steel pipe 10 which is expanded by the metal die 12 at the second step. Then the face of the end part 10a is curved smoothly by the curved face 12a and further folded back at right angles to the axial core by the folded back face 12b and a pipe joint face is made. With inserting a loose flange 13 a joint is formed.
JP23180384A 1984-11-02 1984-11-02 Working method for pipe end of steel pipe Pending JPS61111726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23180384A JPS61111726A (en) 1984-11-02 1984-11-02 Working method for pipe end of steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23180384A JPS61111726A (en) 1984-11-02 1984-11-02 Working method for pipe end of steel pipe

Publications (1)

Publication Number Publication Date
JPS61111726A true JPS61111726A (en) 1986-05-29

Family

ID=16929263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23180384A Pending JPS61111726A (en) 1984-11-02 1984-11-02 Working method for pipe end of steel pipe

Country Status (1)

Country Link
JP (1) JPS61111726A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022634A1 (en) * 1993-04-06 1994-10-13 Alberto Navarra Pruna Method for fabricating an expulsion tubular for moulds
FR2721257A1 (en) * 1994-06-15 1995-12-22 Continental Ag Tyre valve insert for high pressure pneumatic tyres
KR100952496B1 (en) * 2008-03-20 2010-04-13 한립지엘공업(주) Method for producing flange of a high-pressure pipe
KR100953892B1 (en) 2008-01-29 2010-04-22 (주)페스코 Forming method of a long neck flange using upsetting and expanding
KR101042387B1 (en) 2010-06-29 2011-06-17 최연학 Manufacturing method for connecting bracket of vehicle
CN107812817A (en) * 2017-12-15 2018-03-20 江苏建中新材料科技有限公司 Automobile steel pipe forming production line

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022634A1 (en) * 1993-04-06 1994-10-13 Alberto Navarra Pruna Method for fabricating an expulsion tubular for moulds
ES2093545A1 (en) * 1993-04-06 1996-12-16 Pruna Alberto Navarra Method for fabricating an expulsion tubular for moulds.
FR2721257A1 (en) * 1994-06-15 1995-12-22 Continental Ag Tyre valve insert for high pressure pneumatic tyres
KR100953892B1 (en) 2008-01-29 2010-04-22 (주)페스코 Forming method of a long neck flange using upsetting and expanding
KR100952496B1 (en) * 2008-03-20 2010-04-13 한립지엘공업(주) Method for producing flange of a high-pressure pipe
KR101042387B1 (en) 2010-06-29 2011-06-17 최연학 Manufacturing method for connecting bracket of vehicle
CN107812817A (en) * 2017-12-15 2018-03-20 江苏建中新材料科技有限公司 Automobile steel pipe forming production line

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