JPS55141312A - Manufacture of laminated metallic pipe - Google Patents

Manufacture of laminated metallic pipe

Info

Publication number
JPS55141312A
JPS55141312A JP4946179A JP4946179A JPS55141312A JP S55141312 A JPS55141312 A JP S55141312A JP 4946179 A JP4946179 A JP 4946179A JP 4946179 A JP4946179 A JP 4946179A JP S55141312 A JPS55141312 A JP S55141312A
Authority
JP
Japan
Prior art keywords
tubular body
billet
metallic pipe
reduction
applying
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
JP4946179A
Other languages
Japanese (ja)
Inventor
Chihiro Hayashi
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 JP4946179A priority Critical patent/JPS55141312A/en
Publication of JPS55141312A publication Critical patent/JPS55141312A/en
Pending legal-status Critical Current

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  • Metal Extraction Processes (AREA)

Abstract

PURPOSE: To improve the production efficiency and the inspection yield of the product, by inserting the tubular body to be the inner layer into the tubular body to be the outer layer, by applying the cold stretch-reduction, and then, by heating and extruding according to the press system.
CONSTITUTION: The small diameter tubular body 2 or the rod is inserted into the large diameter tubular body 1, and after applying the reducing work, the assembly is treated by the cold stretch-reduction to form the hollow or solid laminated billet 3. This billet 3 is cut into the specified length, and is heated to the specified temperature. In case of the solid laminated billet, the piercing work is applied, and then, the extrusion, etc., according to the press system is applied to obtain the desired laminated metallic pipe. According to this method, since the parent metal is perfectly tight contacting with the clad metal at the stage of the billet 3, the perfect metallurgical bonding can be obtained from top and bottom after undergoing the hot press.
COPYRIGHT: (C)1980,JPO&Japio
JP4946179A 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe Pending JPS55141312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4946179A JPS55141312A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4946179A JPS55141312A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Publications (1)

Publication Number Publication Date
JPS55141312A true JPS55141312A (en) 1980-11-05

Family

ID=12831777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4946179A Pending JPS55141312A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Country Status (1)

Country Link
JP (1) JPS55141312A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501957A (en) * 1973-05-11 1975-01-10
JPS5178773A (en) * 1974-12-30 1976-07-08 Kobe Steel Ltd ARUMINIUMUFUKUGOBIRETSUTONO SEISAKUHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501957A (en) * 1973-05-11 1975-01-10
JPS5178773A (en) * 1974-12-30 1976-07-08 Kobe Steel Ltd ARUMINIUMUFUKUGOBIRETSUTONO SEISAKUHOHO

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