来源：http://www.jnmcd.com 发布时间：2019-06-17 浏览：次
I. Electric Welding Machine Drying Method
1. In order to monitor the change of current in the process of dryness, a ammeter can be connected in series to see if the current can reach the rated current of the reducer motor. The dry DC speed regulating motor with AC welding machine does not need to stop disassembling and inspecting, which reduces the workload. At the same time, under the condition of electrification, the speed reducing motor uses its own resistance to heat the coil, making the coil average heated, and the dryness effect is better.
2. The dry operation wiring and AC of DC welding machine are similar. The series ammeter should be DC ammeter. It is convenient to operate the damp retarder motor with DC welding machine, and it can stop the long-term dryness of large and medium-sized retarder motor and high-voltage retarder motor at the same time. In this way, when the welding machine works for a long time or at high current, its internal components will not be damaged by long time and high current, so it can be used for a long time for large and medium-sized deceleration motors. It is worth noting that when these two methods are dry, all contacts must be well contacted and tightened. Special wires should be used for the lead-out wire of the welding machine, and the size of the requested cross-section should meet the current carrying capacity of the output current of the welding machine. Pay attention to the cooling of the transformer of the welding machine itself, and ensure that the insulation resistance of the reducer motor can not be less than 0.1M. Also pay close attention to the speed reduction motor winding temperature and timely adjustment of voltage and current.
2. External heat source heating method
After the damp DC motor is disassembled and inspected, the high-power incandescent bulb is put into the reducer motor to stop baking, or the reducer motor is put into the drying room to stop drying. This method is convenient to operate, safe and reliable, but only suitable for small speed reduction motors which are easy to disassemble and check. For large and medium-sized or not easy to disassemble and inspect the deceleration motor, the workload is relatively large, but also reduces the feasibility. It should be noted that the bulb or heat source should not be too close to the coil in order to prevent the coil from burning out. Canvas and other items can be covered on the housing of the decelerating motor to stop the insulation.
3. Excitation Coil Drying Method
The method of excitation coil drying is to winding the excitation coil on the core of the stator coil of the decelerating motor and connecting it to the alternating current to make the stator produce magnetic flux and dry the stator of the decelerating motor relying on its iron loss.
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