论文部分内容阅读
日本工业科学和技术厅机械工程实验室研制成功一种利用磁场作用水平方向晃动电弧等离体的新的磁控制系统。电弧等离子焊接是用一个电极和待焊工件间电弧等离子体产生的热量进行焊接的一种技术。在放电期间电流增大时,焊接效率就提高,但是应用电流过大会引起焊接质量下降,如焊接表面粗糙。采用新的磁控制系统时,由于磁场的作用使电弧等离子体作水平晃动,以便提高电流值和改善焊接质量。若采用通常的方法,当放电电流为250安培时,4毫特斯拉(40高斯)的磁场不足于使电弧等离子体作左右晃动,而采用新方法时,只要磁场强度为2毫
Japanese Industrial Science and Technology Agency for Mechanical Engineering Laboratory successfully developed a magnetic field using the horizontal direction of the arc shaking the new magnetic control system. Arc plasma welding is a technique that uses a heat generated by an electrode and an arc plasma between parts to be welded. When the current increases during discharge, the welding efficiency increases, but the application of current over the General Assembly caused by the decline in welding quality, such as the welding surface roughness. With the new magnetic control system, the arc plasma is horizontally swayed by the action of the magnetic field in order to increase the current value and improve the welding quality. With the usual method, a magnetic field of 4 milliteslas (40 Gauss) is not enough to cause the arc plasma to sway from side to side when the discharge current is 250 amperes. With the new method, as long as the magnetic field strength is 2 milliamperes