금속 샌드위치 판재 대면적 롤 프로젝션 용접에 관한 연구 : Part 1 - 공정 모니터링A Study on Large Area Roll Projection Welding for Metallic Sandwich Plate : Part 1 - Process Monitoring
A roll projection welding machine is introduced to fabricate metallic sandwich plate consisting of a
structured inner sheet with projection-like shape and a pair of skin sheets. To fabricate the metallic
sandwich plate of consistent and good quality, two process monitoring methods are introduced; dynamic
resistance monitoring and skin sheet temperature monitoring. Dynamic resistance monitoring has no time
delay but gives only averaged value over plate width. Skin sheet temperature monitoring has certain
amount of time delay but is good for predicting weld quality of specified position. By the two
complementary monitoring methods, the characteristics of the new welding process is successfully
understood.