Guangzhou DuroWelder Limited - Welding Machines & Equipment

Main application and characteristicresistance 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.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.However, these two kinds of welding methods both cannot adjust welding current 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 middle frequency self auto 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.

1. Specially designed for welding thin steel sheets (low carbon, low alloy steel and stainless)2. Separated wire feeder design3. High speed of welding minimizes weld distortion4. Produces good quality welds with no slag 5. Allows operator to view arc and therefore more precise positioning of the weld in the assembly6. Transformer with a Tap switch allows selection of optimal welding power for various metal thicknesses

1. Specially designed for welding thin steel sheets (low carbon, low alloy steel and stainless)2. Separated wire feeder design3. High speed of welding minimizes weld distortion4. Produces good quality welds with no slag 5. Allows operator to view arc and therefore more precise positioning of the weld in the assembly6. Transformer with a Tap switch allows selection of optimal welding power for various metal thicknesses

We are offering Resistance Rolling Welding Machine/pneumatic Welding Machine.

1.Applying adjustable stroke cylinders for compression to avoid CoIIision and damage 0f upper and below electrodes 2.Being drixan by 3-phase step less speed electrodes. The welding speed adjustment is convenient and stable 3.Longitudinal and horizontal welding is suitable for requirement of different part welding. Smart and reasonable internal structure reduces welding performance weakening due to heat 4.The rotation conductance or sliver axis tile provides excellent contact and reduces electric energy transformation in maximum. 5.Being widely used in hardware. Household appliance. Auto .Basin making, Can making. And other metal manufacturing and reproducing industry

Mf series middle frequency inverter dc welding machinemain application and characteristicresistance welding is one kind of welding technology which melt the metalmaterial by the resistance heating energy which is generated by the weldingcurrent passing the workpiece itself. Therefore by increase or adjusting thewelding current frequency, it can change and improve the welding quality.just basing on this theory, we develop the middle frequency inverter dc weldingmachine, its welding current frequency increase to 1000hz from common 50hzor 60hz.the controlling time precision is much higher, the power factor is morethan 98%, without eddy current electromagnetic induction interference, thewelding quality is also improved a lot.while not for all the workpiece, the current optimum value is all same as1000hz, some need bigger welding frequency, others need less, just because thisreason, basing on the middle frequency welding technology, we also develop vfseries variable frequency welding machine which welding frequency isadjustable. The principle is that by the added a igbt pulse width adjustable"welding controller" and the output voltage of v and transformer turns n alladjustable "welding transformer" to fulfill the function of adjustable frequency.however, these two kinds of welding methods both cannot adjust welding currentvalue of each welding automatically according to the subtle changes of workpiece.In order to meet much higher request to welding quality, such as for theautomotive, aircraft and other high-end products, we develop one kind ofdynamic resistance principle middle frequency self auto adaptive controlsystem. It can install to both mf and vf welder, by this way they can adjust thewelding current automatically basing different product. This system is based onthe constant current mode control technique, according to the workpiece thickness