JPS57146430A - Expanding method for tubular member having uneven inner face - Google Patents

Expanding method for tubular member having uneven inner face

Info

Publication number
JPS57146430A
JPS57146430A JP2997181A JP2997181A JPS57146430A JP S57146430 A JPS57146430 A JP S57146430A JP 2997181 A JP2997181 A JP 2997181A JP 2997181 A JP2997181 A JP 2997181A JP S57146430 A JPS57146430 A JP S57146430A
Authority
JP
Japan
Prior art keywords
tube
inner face
expanding
expanded
tubular member
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
JP2997181A
Other languages
Japanese (ja)
Inventor
Kenji Sugino
Yoshio Ino
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.)
Sugino Machine Ltd
Original Assignee
Sugino Machine 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 Sugino Machine Ltd filed Critical Sugino Machine Ltd
Priority to JP2997181A priority Critical patent/JPS57146430A/en
Publication of JPS57146430A publication Critical patent/JPS57146430A/en
Pending 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
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To make tube expanding without damaging the uneven shape of inner face of a tube by expanding a soft member inserted into a tubular member having an uneven inner face in radial direction and expanding the tube by its expanding force. CONSTITUTION:A tube 1 having an uneven inner face 2 is inserted into a tube hole 4 of a plate member 3. A bar member 6 having a fluid passage 7 is inserted in the tube 1 and a circular cylinder 5 is expanded by supplying high pressure fluid from the fluid passage 7, and the tube 1 is expanded by expanding force to bring the tube 1 into close contact with the plate member 3. At this time, the cylinder 5 cuts fully into recessed parts in the tube 1 and the tube is expanded by applying the liquid pressure uniformly on projected parts and recessed parts. The supplied fluid is normally used at 100-6,000kgF/cm<2> high pressure.
JP2997181A 1981-03-04 1981-03-04 Expanding method for tubular member having uneven inner face Pending JPS57146430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997181A JPS57146430A (en) 1981-03-04 1981-03-04 Expanding method for tubular member having uneven inner face

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997181A JPS57146430A (en) 1981-03-04 1981-03-04 Expanding method for tubular member having uneven inner face

Publications (1)

Publication Number Publication Date
JPS57146430A true JPS57146430A (en) 1982-09-09

Family

ID=12290842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997181A Pending JPS57146430A (en) 1981-03-04 1981-03-04 Expanding method for tubular member having uneven inner face

Country Status (1)

Country Link
JP (1) JPS57146430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498220A (en) * 1982-08-23 1985-02-12 The Trane Company Method for pre-expanding heat exchanger tube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112978A (en) * 1978-02-24 1979-09-04 Hitachi Ltd Uniform tube expander
JPS54121274A (en) * 1978-03-15 1979-09-20 Hitachi Ltd Method and apparatus for uniform expansion of tube
JPS5689340A (en) * 1979-12-19 1981-07-20 Showa Alum Corp Pipe expanding method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112978A (en) * 1978-02-24 1979-09-04 Hitachi Ltd Uniform tube expander
JPS54121274A (en) * 1978-03-15 1979-09-20 Hitachi Ltd Method and apparatus for uniform expansion of tube
JPS5689340A (en) * 1979-12-19 1981-07-20 Showa Alum Corp Pipe expanding method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498220A (en) * 1982-08-23 1985-02-12 The Trane Company Method for pre-expanding heat exchanger tube

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