JPS63123534A - Manufacture of elbow with straight pipe part - Google Patents

Manufacture of elbow with straight pipe part

Info

Publication number
JPS63123534A
JPS63123534A JP26891786A JP26891786A JPS63123534A JP S63123534 A JPS63123534 A JP S63123534A JP 26891786 A JP26891786 A JP 26891786A JP 26891786 A JP26891786 A JP 26891786A JP S63123534 A JPS63123534 A JP S63123534A
Authority
JP
Japan
Prior art keywords
elbow
straight pipe
diameter
equal
outer diameter
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
JP26891786A
Other languages
Japanese (ja)
Inventor
Masayasu Kojima
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP26891786A priority Critical patent/JPS63123534A/en
Publication of JPS63123534A publication Critical patent/JPS63123534A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture the elbow with straight pipe part whose outer diameters are all equal in a good shape without any correction stage by pushing the straight pipe in which a deformable solid material is packed into the split die for pushing-in whose inner bore diameter is equal to the outer diameter of the elbow from the start point up to finish point.
CONSTITUTION: A work support 23 is fitted to the split die 17 for push conically engaged with the case 20 that all of the inner diameter from the start point e-e' of the cylindrical guide part 19-1 and concentric curved part 19-2 of a die hole 19 reaching up to the finishing point b-b' are equal to the elbow outer diameter D. The deformable solid material 25 freezed by packing a water and sand, for instance, is filled up at the inner part of a straight pipe 15 whose outer diameter is equal to the elbow outer diameter D where a blind patch 22 is welded on its end face. This straight pipe 15 is inserted into the work support 23, pushed in by a push punch 24 and made the elbow 16 with straight pipe part, and after eliminating the solid material 25 a tip part 28 is cut on the b-b' line. The conventional stage of correcting a tapered elbow part with its diameter expansion is saved and the process is shortened by forming in good shape even the elbow part of thin thickness and small bent diameter.
COPYRIGHT: (C)1988,JPO&Japio
JP26891786A 1986-11-11 1986-11-11 Manufacture of elbow with straight pipe part Pending JPS63123534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26891786A JPS63123534A (en) 1986-11-11 1986-11-11 Manufacture of elbow with straight pipe part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26891786A JPS63123534A (en) 1986-11-11 1986-11-11 Manufacture of elbow with straight pipe part

Publications (1)

Publication Number Publication Date
JPS63123534A true JPS63123534A (en) 1988-05-27

Family

ID=17465072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26891786A Pending JPS63123534A (en) 1986-11-11 1986-11-11 Manufacture of elbow with straight pipe part

Country Status (1)

Country Link
JP (1) JPS63123534A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008302380A (en) * 2007-06-06 2008-12-18 Jfe Steel Kk Method for bending pipe
CN107263134A (en) * 2017-05-04 2017-10-20 西安优耐特容器制造有限公司 A kind of supporting tool and forming method for thin-wall bend cold forming
KR102340897B1 (en) * 2021-05-14 2021-12-17 주식회사 한국슈어조인트 Bend forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008302380A (en) * 2007-06-06 2008-12-18 Jfe Steel Kk Method for bending pipe
CN107263134A (en) * 2017-05-04 2017-10-20 西安优耐特容器制造有限公司 A kind of supporting tool and forming method for thin-wall bend cold forming
KR102340897B1 (en) * 2021-05-14 2021-12-17 주식회사 한국슈어조인트 Bend forming device

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