用于汽车、拖拉机上的起动机是直流电机的一种特殊类型,其特点是低电压、大电流、短时定额工作。其电枢绕组与换向器的连接是用铜夹片夹持后,采用浸锡焊工艺焊接的。国内都采用这种传统工艺。国外绝大部分也采用该工艺。这种浸锡焊工艺存在用料多(铜、锡)、耗电多、砂眼多、加工性能差、产品质量差、作业环境差等缺点。当持续起动时间过长时,电枢就会发生甩锡现象,造成起动困难,甚至烧毁电枢。上海汽车电机厂是起动机专业生产厂,其产品质量与国外先进的同类产品相比有一定的差距,而电枢质量上的差距就更大,如继续采 For motor vehicles, tractors on the starter is a special type of DC motor, which is characterized by low voltage, high current, short-term fixed-scale work. The armature winding and the commutator is connected with the copper clip after the clamp, the use of soldering tin soldering process. Domestic use of this traditional process. The vast majority of foreign countries also use the technology. This immersion soldering process there are many materials (copper, tin), more power, more trachoma, poor processing performance, poor product quality, poor operating environment and other shortcomings. When the continuous starting time is too long, armature tin rejection occurs, resulting in difficult to start, or even burn the armature. Shanghai Automotive Motor Factory is a starter specializing in the production plant, its product quality and foreign advanced similar products compared to a certain gap, while the armature quality gap is even greater, such as continue mining