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Manufacturing method of intermediate frequency water-cooled transformer

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19
2021-10

Do you need skilled operators when operating an intermediate frequency spot welder?

Before welding, it mainly finds suitable welding conditions at the beginning, and adjusts the suitable parameters according to the workpiece to be welded, then the control device (that is, the controller) will perform welding according to the set conditions, in order to find good welding conditions Requires people who are familiar with welding technology, but after setting good welding conditions, even workers without operating experience can operate it. But one thing worthy of our attention and learning is that during the operation, the surface of the electrode will form a white medium on its surface as the number of welding increases. If it is not ground in time, it will increase the resistance and affect the quality of the solder joints. In order to guarantee the welding quality at all times, a file or electrode dresser should be used for grinding regularly. During spot welding, there is a set of standard welding condition tables for mild steel, stainless steel, and aluminum alloy materials. After actual operation according to the welding condition table, if there is a problem with the nugget diameter or welding strength, then Modify the set value before and after this value to find out the welding conditions.       But if it is the same type of metal, it is also necessary to continuously improve the welding conditions according to its plate thickness, surface condition and target size of the nugget diameter of the joint, surface condition after welding and other requirements. But the most important thing to pay attention to is safety first!
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19
2021-10

Maintenance of transformer for intermediate frequency spot welding machine

1. Primary ground insulation inspection Primary ground insulation inspection requirements 1. Tool: 1000v shake meter, 2. Measurement method: first remove the incoming wire of the transformer primary first, and clamp one of the two test leads of the shake meter at the primary incoming wire terminal of the transformer. The other one is clamped on the screw that secures the transformer. Shake 3 to 4 times to observe the changes that are prevented. If the display is not large, it proves that the transformer is well insulated to the ground. If the resistance is less than 2 megohms, it should be abandoned. And notify maintenance.   2, secondary rectifier diode inspection    It is relatively simple to check the secondary rectifier diode. Use a digital multimeter to hit the diode gear, and measure with the red test lead on the top and the black test lead on the bottom. If the multimeter displays between 0.35 and 0.4, it is normal. If the value is lower than 0.01, it indicates that the diode has broken down. Not available   3. Inspection of cooling water circuit   When the welding machine is working, there is a large current continuously passing through the transformer, so the transformer will generate a certain amount of heat. Therefore, the unobstructed cooling water circuit will be particularly important. How to ensure that the cooling water path is unblocked? First of all, make sure that the water added in the ice water machine matched with the welding machine is pure water or distilled water. Secondly, the cold and water shortage pipes should be dredged every quarter by using a high-pressure air gun. And clean the water tank and condensate of the chiller.
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