JPS55149791A - Heat treating method of round bar enclosed weld zone - Google Patents

Heat treating method of round bar enclosed weld zone

Info

Publication number
JPS55149791A
JPS55149791A JP5840479A JP5840479A JPS55149791A JP S55149791 A JPS55149791 A JP S55149791A JP 5840479 A JP5840479 A JP 5840479A JP 5840479 A JP5840479 A JP 5840479A JP S55149791 A JPS55149791 A JP S55149791A
Authority
JP
Japan
Prior art keywords
round bar
welding
enclosed
base metals
weld zone
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
JP5840479A
Other languages
Japanese (ja)
Inventor
Akihide Murakami
Minoru Honda
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen 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 Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP5840479A priority Critical patent/JPS55149791A/en
Publication of JPS55149791A publication Critical patent/JPS55149791A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To heat treat the round bar enclosed weld zone so as to have sufficient tensile strength and have all perfect values in the impact values of respective zone by holding the round bar after enclosed welding at the specified temperature then subjecting the same to water hardening and annealing followed by air cooling.
CONSTITUTION: A copper strap 7 is applied to the groove of round bar base metals 6 of hardened and annealed material and the base metals are welded by welding electrode 160W170A by using, e.g., low hydrogen type electrode containing N-13; 3.5%Ni, after which the same heat treatment as that at the time of manufacturing the base metals 6 is done. namely, after the base metal 6 having undergone this enclosed welding is held for 1 hour at 880W920°C, it is water-hardened thence annealed to 600W650°C, thence it is air cooled. As a result of this, the degradation in the toughness of each part after the welding may be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP5840479A 1979-05-10 1979-05-10 Heat treating method of round bar enclosed weld zone Pending JPS55149791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5840479A JPS55149791A (en) 1979-05-10 1979-05-10 Heat treating method of round bar enclosed weld zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5840479A JPS55149791A (en) 1979-05-10 1979-05-10 Heat treating method of round bar enclosed weld zone

Publications (1)

Publication Number Publication Date
JPS55149791A true JPS55149791A (en) 1980-11-21

Family

ID=13083416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5840479A Pending JPS55149791A (en) 1979-05-10 1979-05-10 Heat treating method of round bar enclosed weld zone

Country Status (1)

Country Link
JP (1) JPS55149791A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024879A (en) * 2003-01-08 2009-02-05 Hiroshi Moriya Camera setting base

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024879A (en) * 2003-01-08 2009-02-05 Hiroshi Moriya Camera setting base

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