In various metal welding welding machine, depending on the welding process, the welding arc voltage and current have different requirements, so you need to different features of ac or dc power supply.
For example, in the point, convex, peak welding, resistance welding when need to adjust the welding isolation transformer voltage, on the edge of the original size (
Phase voltage regulator or change by cycle number)
, belongs to the thyristor
module used in ac voltage regulation;
Among various kinds of argon arc welding, CO2 gas shielded welding is needed is a dc or ac square wave power supply.
Communication applications, the thyristor module of parallel concatenated in main circuit, the dc voltage regulating applications, thyristor can form single, three-phase controlled or half or double star circuit.
Change the conduction Angle of thyristor or control of thyristor switch time can achieve the purpose of adjusting the welding voltage and current.
Especially in recent years, the development of CO2 gas shielded welding machine more quickly, according to reports, this kind of welding machine developed countries accounted for sixty percent, or seventy, the proportion of the proportion of the welding machine in our country is very low, is about twenty percent.
At present, the domestic CO2 gas shielded welding machine which has two kinds of controllable and uncontrollable, depending on the device.
Use the rectification is not controllable;
Using thyristor rectifier is controllable.
Across the country to chengdu, guangzhou and the east China region is faster.
Chooses the thyristor device is mostly bolt type or a proportion of diode is big, the second is the Japanese welding machine dedicated rectifier module.
Welder thyristor module classification and applications: electric welding machine used in the thyristor module by module cooling floor and electrode insulation can be divided into type insulation and insulation type two kinds, namely commonly known as bottom plate is charged.
Insulation type module of multi-purpose in ac welding machine, such as widely used in spot welding, resistance welding machine in the thyristor module MTX series;
Widely used in CO2 gas shielded welding machine, WSM MTG series such as common welding machine module.
Each welder used thyristor module in the table below description: more about thyristor knowledge welcome to visit the website.
Thyristor module true experts, in order to your satisfaction, we really heart.
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