JPS55141314A - Manufacture of laminated metallic pipe - Google Patents

Manufacture of laminated metallic pipe

Info

Publication number
JPS55141314A
JPS55141314A JP4946379A JP4946379A JPS55141314A JP S55141314 A JPS55141314 A JP S55141314A JP 4946379 A JP4946379 A JP 4946379A JP 4946379 A JP4946379 A JP 4946379A JP S55141314 A JPS55141314 A JP S55141314A
Authority
JP
Japan
Prior art keywords
bloom
pipe
tubular body
reduction
cut
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
JP4946379A
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 JP4946379A priority Critical patent/JPS55141314A/en
Publication of JPS55141314A publication Critical patent/JPS55141314A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the production efficiency and the inspection yield of product, by inserting the material bloom to be inner layer into the tubular body to be the outer layer, by applying the cold stretch-reduction, and then, by blooming to obtain the pipe blank.
CONSTITUTION: The material bloom 2 is inserted into the tubular body 1, and the reducing work is applied to this assembly; after that, the assembly is treated by the cold stretch-reduction to form the laminated bloom 3. This bloom 3 is cut into the specified length, and is heated to specified temperatures, and is hot rolled by the steel billet blooming mill to form the round bar type laminated billet. Then, this is cut into the specified length and is sent into the pipe manufacturing process, where the extrusion method, etc., is applied to form the pipe. According to this method, because the parent metal and the clad metal are perfectly tight contacting at the stage of the bloom 3, the perfect metallurgical bonding from top to bottom can be obtained by the hot rolling pass.
COPYRIGHT: (C)1980,JPO&Japio
JP4946379A 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe Pending JPS55141314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4946379A JPS55141314A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4946379A JPS55141314A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Publications (1)

Publication Number Publication Date
JPS55141314A true JPS55141314A (en) 1980-11-05

Family

ID=12831831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4946379A Pending JPS55141314A (en) 1979-04-21 1979-04-21 Manufacture of laminated metallic pipe

Country Status (1)

Country Link
JP (1) JPS55141314A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075961A (en) * 1973-04-20 1975-06-21
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
JPS5075961A (en) * 1973-04-20 1975-06-21
JPS5178773A (en) * 1974-12-30 1976-07-08 Kobe Steel Ltd ARUMINIUMUFUKUGOBIRETSUTONO SEISAKUHOHO

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