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2.换向性能差(火花大)现象和修理直焊机的换向性能好坏,是保证焊接性能和产品寿命的重要因素,国家标准明确规定了火花等级,制造厂出厂产品都符合标准要求方能出厂。用户经一段使用时间后,出现较大火花,甚至整流子表面出现严重的烧灼现象,如果不及时检查排除故障,恶性循环使其整流子烧伤加剧,会缩短焊机寿命和影响焊接稳定性。常见产生火花大的原因和修理方法介绍如下: (1)整流子变形,个别片高。接近停转时可明显听到电刷与整流片间跳动的“答、答”声,整流子表面磨损的痕迹很不均匀。这是由于制造厂加工整流子过程中,加温加压上没有保证质量,使用后由于温度升高和离
2. Reversible poor performance (large sparks) phenomenon and repair straight welder commutation performance is good or bad, is to ensure the welding performance and product life an important factor in the national standard specifies the spark level, the factory manufactured products are in line with standard requirements Only factory. Users after a period of use, a larger spark, and even severe surface burnout phenomenon, if not promptly check the troubleshooting, a vicious circle commutator burn, will shorten the welding machine life and affect the welding stability. The common causes of sparks and repair methods are described below: (1) Commutator deformation, high individual pieces. Close to stall can be clearly heard between the brush and rectifier beating between the “answer, answer” sound, the surface of the commutator wear traces are very uneven. This is due to manufacturing process of the commutator, there is no guarantee of quality heating and pressurizing, after use due to temperature rise and distance