JPS57165139A - Fixing method for flange on steel pipe - Google Patents

Fixing method for flange on steel pipe

Info

Publication number
JPS57165139A
JPS57165139A JP4916981A JP4916981A JPS57165139A JP S57165139 A JPS57165139 A JP S57165139A JP 4916981 A JP4916981 A JP 4916981A JP 4916981 A JP4916981 A JP 4916981A JP S57165139 A JPS57165139 A JP S57165139A
Authority
JP
Japan
Prior art keywords
steel pipe
flange
boss part
press
outside circumference
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
JP4916981A
Other languages
Japanese (ja)
Other versions
JPS591490B2 (en
Inventor
Yoshihide Hinohara
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4916981A priority Critical patent/JPS591490B2/en
Publication of JPS57165139A publication Critical patent/JPS57165139A/en
Publication of JPS591490B2 publication Critical patent/JPS591490B2/en
Expired legal-status Critical Current

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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in

Abstract

PURPOSE:To obtain a flanged steel pipe superior in quality, by constricting and deforming a boss part, which is preliminarily formed on a flange, together with the outside circumference of the steel pipe by the mold clamping action of a press jig to make this boss part and the steel pipe into one body. CONSTITUTION:A boss part 3 bent in the direction of a plane is formed on the inside edge of a flange part 2 of a polygonal or annular plane flange member 1 obtained by punching a steel pipe. After this boss part 3 is inserted to the outside circumference of a steel pipe 4, the steel pipe 4 is inserted into a supporting hole 7 of a lower mold 6 of a press jig 5. Next, an upper mold 10 of the jig 5 is inserted to the flange part 2, and an upper face 8 of the lower mold 6 and a lower face 11 of the upper mold 10 are clamped to hold and compress the flange part 2 between these faces. The outside circumference of the boss part of the member 1 is contracted toward the inside by a taper hole 9 of the lower mold 6, and simultaneously, the end part of the steel pipe 4 has the diameter expanded by a taper root part 15 of the upper mold 10. As a result, the steel pipe 4 is press-fixed to the inside circumference of the boss part 3 by a taper press- contacting face 16 which is so inclined that the diameter is expanded toward the outside circumference at the end part of the steel pipe 4. By this method, mass production of flanged steel pipes is possible.
JP4916981A 1981-03-31 1981-03-31 How to fix flanges on steel pipes Expired JPS591490B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4916981A JPS591490B2 (en) 1981-03-31 1981-03-31 How to fix flanges on steel pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4916981A JPS591490B2 (en) 1981-03-31 1981-03-31 How to fix flanges on steel pipes

Publications (2)

Publication Number Publication Date
JPS57165139A true JPS57165139A (en) 1982-10-12
JPS591490B2 JPS591490B2 (en) 1984-01-12

Family

ID=12823565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4916981A Expired JPS591490B2 (en) 1981-03-31 1981-03-31 How to fix flanges on steel pipes

Country Status (1)

Country Link
JP (1) JPS591490B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903967A (en) * 1993-10-12 1999-05-18 Mitsuba Corporation Double cylinder body and a manufacturing method thereof
JP2008110084A (en) * 2006-10-31 2008-05-15 Iwasaki Electric Co Ltd Ultraviolet sterilizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903967A (en) * 1993-10-12 1999-05-18 Mitsuba Corporation Double cylinder body and a manufacturing method thereof
JP2008110084A (en) * 2006-10-31 2008-05-15 Iwasaki Electric Co Ltd Ultraviolet sterilizer

Also Published As

Publication number Publication date
JPS591490B2 (en) 1984-01-12

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