JPS5456953A - Process for strengthening welded zone - Google Patents

Process for strengthening welded zone

Info

Publication number
JPS5456953A
JPS5456953A JP12243977A JP12243977A JPS5456953A JP S5456953 A JPS5456953 A JP S5456953A JP 12243977 A JP12243977 A JP 12243977A JP 12243977 A JP12243977 A JP 12243977A JP S5456953 A JPS5456953 A JP S5456953A
Authority
JP
Japan
Prior art keywords
weld metal
welding
forging
blow
pressure forging
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
JP12243977A
Other languages
Japanese (ja)
Inventor
Iwao Takase
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12243977A priority Critical patent/JPS5456953A/en
Publication of JPS5456953A publication Critical patent/JPS5456953A/en
Pending legal-status Critical Current

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  • Arc Welding In General (AREA)

Abstract

PURPOSE: To provide the subject process comprising welding a weld metal and a heat while subjecting the same to compulsory pressure forging in the cooling step directly after the welding, thereby making tenacious the joint portion of a large size weld structure and a restraint member.
CONSTITUTION: In the cooling step where a weld metal directly after welding is cooled, the variation in the temperatures of weld metal and the heat influenced part are detected by a temperature senser 5 fitted to the side surface of a pressure forging blow part 1, and pressure forging is carried out by a blow hammer 2. By the application of the forging and plastic processing, reduction of residual stress of the weld metal and conversion of compression stress are attempted, and the joint part comes to have high strength and high tenacity. Also, high temperature cracks are difficult to be generated. Further, when the head part of the blow hammer 2 is rendered into a flat head conical type, crotching in a workpiece 9 and spraying are effectively prevented
COPYRIGHT: (C)1979,JPO&Japio
JP12243977A 1977-10-14 1977-10-14 Process for strengthening welded zone Pending JPS5456953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12243977A JPS5456953A (en) 1977-10-14 1977-10-14 Process for strengthening welded zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12243977A JPS5456953A (en) 1977-10-14 1977-10-14 Process for strengthening welded zone

Publications (1)

Publication Number Publication Date
JPS5456953A true JPS5456953A (en) 1979-05-08

Family

ID=14835863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12243977A Pending JPS5456953A (en) 1977-10-14 1977-10-14 Process for strengthening welded zone

Country Status (1)

Country Link
JP (1) JPS5456953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473558B1 (en) * 2001-11-12 2005-03-08 엘지전선 주식회사 Junction Method For Minimization Of Thermal Deformation In Contact Region Between Two Materials Using Initial Elastic Deformation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473558B1 (en) * 2001-11-12 2005-03-08 엘지전선 주식회사 Junction Method For Minimization Of Thermal Deformation In Contact Region Between Two Materials Using Initial Elastic Deformation

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