To achieve faster welding speed is the hope of many enterprises. In resistance welding, using large current and short time (hard specification) welding is one of the options. Therefore, it is always expected that the welding current will rise faster. This is the same as the pulse hot press welding machine, the heating speed should be increased. There is an option of gain in the pulse hot press welding machine. By modifying the "gain" and changing the heating rate, there is also gain in the high frequency resistance welding machine.
In high-speed welding of high quality, the current rising speed of high-frequency resistance welding machine plays a very important role. Generally speaking, the faster the rising speed is, the better. For example, the rising speed of transistor spot welder is faster and smoother than that of high frequency spot welder. This is a different concept from the current slow rise setting in welding parameter setting, which can not be confused, especially pointed out.
"Gain" is a parameter that determines the speed of current rise.
The greater the gain setting, the faster the current will rise. Generally, 4kHz inverter spot welding machine can reach the set value within 2ms. However, if the gain is too large, the current will fall back to the set value (with current peak value) after rising to 10% higher than the set value, forming current overshoot, which is beneficial for welding some products, but will cause bad phenomena such as explosion when welding some products. This requires experienced technologists to choose suitable "gain" welding power models for customers.
The "gain" of some resistance spot welding machine models of Miyagi company can be set externally, which saves a lot of trouble for the salesperson to select. Of course, it also adds a variable for the customer to determine the process parameters. But it's better than nothing, which may be one of the reasons why the price of its products is high.
The "gain" of the high frequency resistance welding machine produced by our company can not be set externally, but we can set the appropriate "gain" before leaving the factory according to the characteristics of the products welded by customers. In some industries, we have formed corresponding series of welding power supply to adapt to the welding characteristics of industrial products. If the customer can give us workpiece or put forward relevant requirements before choosing high frequency resistance welding machine or high frequency welding power supply, we will evaluate and configure the customer before leaving the factory.
Last week, we met a customer who asked for automatic welding of alloy wire. We have matched the equipment the customer ordered this time, which will make the customer more satisfied in terms of performance.
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