Controls & Transformers

Questions and Answers

For AC welding it is important to operate at a relatively high percent heat. This gives you the maximum efficiency and minimum off time during each weld cycle of the sine wave. So your weld schedule should be designed to optimize this situation as opposed to a high tap and a low setting where a large percentage of the time (each cycle) there is no current flow and the weld is actually cooling down. 

High frequency welding offer many advantages. Weight reduction and reduced power requirements are just part of the advantage. These advantages can add up in a large plant with many weld cells.

High frequency welding offer many advantages. The inverters found in many plants today offer both weight and power reductions. These changes can add up in a large plant with many weld cells.

High frequency welding offers weight reduction and plant power reduction but let’s look at this a little closer. Other benefits in control can also be realized.

If one were to design a weld, the control must provide functions such as squeeze, weld, hold and off. It does this by communicating with the cylinder or servo valve, the SCR or IGBT and or the NC device running the weld cell.

Have a Question?

Do you have a question that is not covered in our knowledgebase? Do you have questions regarding the above article? Click here to ask the professor.