Conventional magnetic field form used in welding technology including horizontal magnetic field, vertical magnetic field and sharp-angled magnetic field, mainly excited by DC, AC and pulse excitation.

• 传统的外加磁场形式主要包括横向磁场,纵向磁场和尖角磁场等几种,励磁方式主要采用直流、交流以及脉冲励磁等。