公开(公告)号：US3582601A

公开(公告)日：1971-06-01

申请号：US3582601D

申请日：1970-01-26

Applicant: SMITH CORP A O

Inventor： WEPFER GEORGE R ,  WINSTROM BERTIL G

IPC: B23K9/02 ,  B23K9/025 ,  B23K9/18

CPC classification number: B23K9/02 ,  B23K9/0253 ,  B23K9/188

Abstract: A submerged arc-welding process performed on adjacent longitudinal edges of a pipe blank. Two submerged arc-welding units are supported on carriages which move on a stationary travel beam over the pipe blank. The welding units start welding at opposite ends of the longitudinal edges and weld toward each other until they meet. At that time one welding unit stops and returns while the second continues forward to overlap the welds while the fused flux remains electrically conductive at the area of overlap. After the second unit merges the welds, it returns.

公开(公告)号：US3047714A

公开(公告)日：1962-07-31

申请号：US81262659

申请日：1959-05-12

Applicant: SMITH CORP A O

Inventor： WEPFER GEORGE R

IPC: B23K9/173

CPC classification number: B23K9/173

公开(公告)号：US2665363A

公开(公告)日：1954-01-05

申请号：US22843351

申请日：1951-05-26

Applicant: SMITH CORP A O

Inventor： WEPFER GEORGE R

IPC: B23K9/10

CPC classification number: B23K9/1037