Guangzhou DuroWelder Limited

Welding Machine, Spot Welding Machine, Inverter DC Welder manufacturer / supplier in China, offering Factory Price High Quality Inverter DC Welding Machine, Dr Series Capacitive Discharge Spot Welding Machine, Dw-1kw Mini Induction Heating Machine for Car Bolt Heat and so on.

Factory Price High Quality Inverter DC Welding Machine

FOB Price:US $1 - 10,000 / Set
Min. Order (Sets) FOB Price
1+ US $1-10,000 / Set
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Min. Order: 1 Set
Port: Guangzhou, China
Production Capacity: 30 Sets/ Month
Payment Terms: T/T, D/P, Western Union, Money Gram

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Basic Info.

Model NO.:MF 50-300KVA
Cooling Way:Water Cooling
Electrode Stroke:Vertical
Electric Current:Inverter DC
Conductive Way:Both-Sided
Welding Spot Number:Single
Rated Capacity:50-300kVA
Primary Voltage:380V/415V/480V 50/60Hz
Rated Duty Cycle:50%
Usage:Welding Thicker Workpiece
Use:Metals Welding
Transport Package:Angle Iron Frame and Human Made Wooden Sheet Box
Origin:Guangdong, China
HS Code:8515190000

Product Description

Middle Frequency Inverter DC Welding Machine

Main Application and Characteristic:
1. Resistance Welding is one kind of welding technology which melt the metal material by the resistance heating energy which is generated by the welding current passing the workpiece itself. Therefore by increase or adjusting the welding current frequency, it can change and improve the welding quality. 
Just basing on this theory, we develop the Middle Frequency Inverter DC Welding Machine, its welding current frequency increase to 1000HZ from common 50HZ or 60HZ. 
The controlling time precision is much higher, the power factor is more than 98%, without eddy current electromagnetic induction interference, the welding quality is also improved a lot. 
2. While not for all the workpiece, the current optimum value is all same as 1000HZ, some need bigger welding frequency, others need less, just because this reason, basing on the Middle Frequency Welding Technology, we also develop VF Series Variable Frequency Welding Machine which welding frequency is adjustable. 
The principle is that by the added a IGBT pulse width adjustable "Welding Controller" and the output voltage of V and transformer turns N all adjustable "Welding Transformer" to fulfill the function of adjustable frequency. 
3. However, these two kinds of welding methods both can not adjust welding currecnt value of each welding automatically according to the subtle changes of workpiece. 
In order to meet much higher request to welding quality, such as for the automotive, aircraft and other high-end products, we develop one kind of "Dynamic Resistance Principle Auto Self Adaptive Control System". It can install to both MF and VF Welder, by this way they can adjust the welding current automatically basing different product. 
This system is based on the constant current mode control technique, according to the workpiece thickness, different dirt surface of workpiece and the corrosion degree, current shunt, the operator's individual difference factors, such as the subtle changes and solder joints, it can automatically adjust welding current during the welding process of each welding spot, ensure the consistency of the welding quality and effect. 
4. Middle Frequency and Variable Frequency Welder are both powered by three-phase power, compared to the traditional AC welder two-phase power supply, will not cause the fluctuation of power supply, also can adapt suddenly lifting voltage strongly. Current output is also more accurate, more stable, more energy saving and more efficient. 
5. These kinds of higher technology is specially suitable for welding higher conductive rate of material, such as aluminum, copper, silver, and so on. Also good at welding much more thicker workpiece, automobile, aerospace, and other high request products and industry.
Rated Voltage3-Phase, AC, 380---415----480V, 50/60HZ.
Rated Capacity50KVA90KVA150KVA170KVA250KVA300KVA
Rated Duty Cycle50%50%50%50%50%50%
Max Welding Current18500A23500A32000A40500A56500A80000A
Electrode Stroke75MM100MM
Welding Arm Spacing260MM320MM
Air Source Pressure0.6MPa
Cooling Water Flow16L/Minute25L/Minute35 L/Minute45L/Minute
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Guangzhou DuroWelder Limited

- Guangdong, China
- Manufacturer/Factory & Trading Company

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