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.)
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KKfiledCriticalBabcock Hitachi KK
Priority to JP9814578ApriorityCriticalpatent/JPS5524768A/en
Publication of JPS5524768ApublicationCriticalpatent/JPS5524768A/en
PURPOSE: To perform welding effectively void of flaw such as crack or the like by welding surface beveling portion after welding for two passes or more at the inner beveling portion at the both sides welding process of pipe material, etc.
CONSTITUTION: Beveling 2 is formed by positioning two weldments 1,1' opposed against each other and its aperture and the condition are maintained by the holding jig 3 attached on the outside of the weldments. Welding is performed as the first step by forming deoosit metal 4 as the first layer from inside surface leaving small spaced beveling 2, and the second step is performed by adding welding upon the beveling 2 forming delosit metal 4' as the second layer. Upon the outer side beveling 2 which is left as small soace, welding is performed forming deposit metal 5 and the desired welding process is completed by removing the holder jig 3.
COPYRIGHT: (C)1980,JPO&Japio
JP9814578A1978-08-141978-08-14Welding process
PendingJPS5524768A
(en)