JPS6440116A - Manufacture of triplet pipe by mechanical bonding - Google Patents

Manufacture of triplet pipe by mechanical bonding

Info

Publication number
JPS6440116A
JPS6440116A JP19737887A JP19737887A JPS6440116A JP S6440116 A JPS6440116 A JP S6440116A JP 19737887 A JP19737887 A JP 19737887A JP 19737887 A JP19737887 A JP 19737887A JP S6440116 A JPS6440116 A JP S6440116A
Authority
JP
Japan
Prior art keywords
pipe
duplex
triplet
percentage
heated
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
JP19737887A
Other languages
Japanese (ja)
Inventor
Hirohisa Ichihara
Daigo Sumimoto
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP19737887A priority Critical patent/JPS6440116A/en
Publication of JPS6440116A publication Critical patent/JPS6440116A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce manufacturing cost and to improve product quality by performing the diameter reducing work of the combination of the inner pipe and intermediate pipe in a cold state, then by inserting this duplex pipe into a heated outer pipe and performing a diameter reducing. CONSTITUTION:The thin thickness inner pipe 2 is inserted into the intermediate pipe 1 pointed previously, then the drawing is performed through a die 3, to stick the intermediate pipe 1 fast to the inner pipe 2 uniformly in a whole extent. And the outer diameter contracting percentage of the inner pipe is set within the range of 0.5-5.0. The outer pipe 6 heated in the prescribed temp. is sent in on conveying rolls, and the duplex pipe 4 and the outer pipe 6 are charged to a rolling mill 8 through a pushing machine 7 to subject to drawing roll. For the bonding of the outer pipe 6 with the duplex pipe 4 is performed through a thermal shrinkage of the outer pipe 6, the contracting percentage of the outer pipe 6 is managed small. In this way, because the triplet pipe 9 is manufactured in good yield, its manufacturing cost is reduced. Because the adherent of the triplet pipe 9 is sufficient, the product quality is improved.
JP19737887A 1987-08-07 1987-08-07 Manufacture of triplet pipe by mechanical bonding Pending JPS6440116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19737887A JPS6440116A (en) 1987-08-07 1987-08-07 Manufacture of triplet pipe by mechanical bonding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19737887A JPS6440116A (en) 1987-08-07 1987-08-07 Manufacture of triplet pipe by mechanical bonding

Publications (1)

Publication Number Publication Date
JPS6440116A true JPS6440116A (en) 1989-02-10

Family

ID=16373513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19737887A Pending JPS6440116A (en) 1987-08-07 1987-08-07 Manufacture of triplet pipe by mechanical bonding

Country Status (1)

Country Link
JP (1) JPS6440116A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03234314A (en) * 1990-02-09 1991-10-18 Nippon Steel Corp Manufacture of double tube
KR20160065098A (en) * 2013-08-23 2016-06-08 발로렉 튜보스 두 브라질 에스.에이. Process for producing a multilayer pipe having a metallurgical bond by drawing, and multilayer pipe produced by this process
JP2016534880A (en) * 2013-08-23 2016-11-10 ヴァルレック・トゥーボス・ド・ブラジル・ソシエダージ・アノニマVallourec Tubos do Brasil S.A. Method for manufacturing multilayer pipes by expansion and multilayer pipes manufactured by said method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03234314A (en) * 1990-02-09 1991-10-18 Nippon Steel Corp Manufacture of double tube
KR20160065098A (en) * 2013-08-23 2016-06-08 발로렉 튜보스 두 브라질 에스.에이. Process for producing a multilayer pipe having a metallurgical bond by drawing, and multilayer pipe produced by this process
JP2016534880A (en) * 2013-08-23 2016-11-10 ヴァルレック・トゥーボス・ド・ブラジル・ソシエダージ・アノニマVallourec Tubos do Brasil S.A. Method for manufacturing multilayer pipes by expansion and multilayer pipes manufactured by said method
JP2016537203A (en) * 2013-08-23 2016-12-01 ヴァルレック・トゥーボス・ド・ブラジル・ソシエダージ・アノニマVallourec Tubos do Brasil S.A. Method for producing multilayer pipes with metaradical bonds by drawing and multilayer pipes produced by the process

Similar Documents

Publication Publication Date Title
JPH01145132A (en) Method and apparatus for manufacturing apertured film
JPH01216830A (en) Process for manufacturing laminate of metal sheet and filament-reinforced synthetic layer
JPS6440116A (en) Manufacture of triplet pipe by mechanical bonding
TW339372B (en) Production method of a spinning ring for a ring spinning machine
JPS5611119A (en) Manufacture of stepped hollow shaft
JPS63126602A (en) Production of stainless steel clad copper bar
SU1693775A1 (en) Roll-type sheet bending machine
JPH02121739A (en) Manufacture of multistage and multigroove v-pulley
JPH01162532A (en) Manufacture of hollow needlelike article
JPS615924A (en) Continuous manufacture of synthetic resin hollow body
JPS63290606A (en) Manufacture of seamless steel pipe
JPS6167537A (en) Forming method of outer ring with shaft of uniform universal joint, or the like
JPS62207525A (en) Ring mill rolling mill
JPS5733933A (en) Manufacture of conveying roller for high temperature object
JPS63299815A (en) Production of double tube
JPS62124042A (en) Manufacture of multi-grooved v-pulley made of sheet metal, having bearing
JPS5776330A (en) Manufacturing method of dry-type clutch facing
JPS58110107A (en) Controlling method for wall thickness in stretch reducer for pipe
JPS62279002A (en) Production of channel
JPS63238986A (en) Manufacture of composite material with deformed cross section
JPS57137032A (en) Spinning forming method
JPS603902A (en) Cold rolling method of steel strip by sendzimir mill
JPS55141522A (en) Manufacture of ferrite stainless steel sheet with very little ridging
JPS5868514A (en) Plastic roller and its forming method
JPH03243209A (en) Grooving method on inner surface of metallic tube