日本川崎钢铁公司已经研制成功一种新的利用 CO_2气体保护的电弧焊方法。采用这种方法在现场焊接管桩时,效率可提高一倍,而且不需要熟练的焊工。这种焊接法所用的装置和焊条材料也已由川崎钢铁公司和日立公司研制成功。在高层建筑的基础工程中,需采用大量的管桩,每一个管桩一般利用三节或四节15米长的钢管相互焊接起来。新研究成功的焊接方法(称作 KH—P 焊接方法)可以在建筑现场全自动地完成焊接作业。电焊机的主要零件包括一个焊接头和一个供线(焊条)装置,这两者都由一个电磁轮驱动并能自动地在导轨中运动。电焊机是 Kawasaki Steel Co., Ltd. of Japan has successfully developed a new arc welding method using CO 2 gas protection. With this method, pipe piles are welded in the field, doubling the efficiency and eliminating the need for a skilled welder. Equipment and electrode materials used in this welding method have also been successfully developed by Kawasaki Steel and Hitachi. In the basic construction of high-rise buildings, a large number of pipe piles are required. Each pipe pile is welded to each other by using three or four 15-meter long steel pipes. New research Successful welding methods (known as KH-P welding methods) allow the welding operation to be completed automatically at the construction site. The main components of a welding machine include a welding head and a wire feeding device, both driven by an electromagnet and automatically moved in the guide. Welder is