Projection Welding Machine
Medium Frequency Projection Welding Machine
- High power factor which is above 0.9. Adopts IGBT module inverter, the welding current peak is low, the control stability is good, and the welding spatter is reduced. The welding current waveform is complete without zero crossing, the welding time is shorter than that of the power frequency welding machine, and the welding stability zone is enlarged. It has a good welding effect on various materials such as carbon steel, high-strength steel, stainless steel, coated steel, aluminum, magnesium, and titanium alloy.
Introduction of Projection Welding Machine
Resistance projection welding is a form of spot welding. Projection welding is mainly used for welding low-carbon steel and low-alloy steel stamping parts, such as welding nuts on thin plates. The main application of projection welding is to connect some stamped low carbon steel, low alloy steel and HSLA steel parts. In the process of stamping (punching, drawing or forming), one of the parts must be formed into a bump in the stamping process, so that projection welding can be carried out. Projection welding can also be used to connect thread-cut parts to stamping parts, and protrusions can be processed at the ends of thread-cut parts by cutting or cold forming.
Projection welding is most successfully used on parts with a thickness of 0.56～3.18mm (0.022～0.125in). Sections with a thickness of less than 0.25mm (0.010in) are more suitable for spot welding. With the development of the automobile industry, high-productivity projection welding has been widely used in the manufacture of automobile parts. Projection welding is also widely used in the connection of wires and pipes.
Features of Projection Welding Machine
The intermediate frequency inverter welding machine is a three-phase alternating current that is bridge rectified and filtered to obtain a relatively stable direct current. The 1000 Hz intermediate frequency alternating current is generated through the inverter, and then the resistance welding transformer is fed, and the resistance welding transformer secondary output low-voltage alternating current is single-phase full-wave rectified to produce direct current with a small amount of pulsation for welding.
The intermediate frequency welding power supply is a three-phase balanced load, which has a much smaller impact on the power grid than single-phase AC welding, which reduces the requirements of the power supply system. Because the primary input frequency of the resistance welding transformer is higher, the volume and weight of the transformer can be greatly reduced. It is only 1/4 to 1/3 of the AC transformer of the same power, the output welding current is DC, the power factor is as high as 90%, the thermal efficiency is high, the welding time is short, and the transformer power required under the same welding capacity is only AC About 1/2 of the transformer power, the energy saving effect is remarkable.
Technical Specification of Projection Welding Machine
Model | Unit | DTB-50 | DTB-100 | DTB-200 | DTB-320 | |
Input Power | V | 380 | 380 | 380 | 380 | |
Rated Capacity | kVA | 50 | 100 | 200 | 320 | |
Secondary no-load Voltage | V | 8.4 | 9 | 9 | 9 | |
Secondary | Continuous Current | kA | 4.2 | 8.5 | 17 | 25.5 |
Max Current | kA | 18 | 28 | 55 | 70 | |
Max Pressure | kN | 6 | 10 | 15 | 24 | |
Electrode Stroke | mm | 60 | 100 | 100 | 100 | |
Water Consumption | L/min | 20 | 25 | 35 | 50 | |
Electrode | Diameter | mm | 16 | 20 | 25 | 25 |
Holder | mm | 25*170 | 32*200 | 40*250 | 40*250 | |
Arm | mm | 60*200 | 80*240 | 100*340 | 100*340 | |
Platform | mm | 110*130 | 150*160 | 200*190 | 200*190 | |
Welding Thickness | Carbon Steel | mm | 2.5+2.5 | 4+4 | 6+6 | 5+5 |
Aluminum | mm | 1+1 | 2+2 | 2.5+2.5 | 3.5+3.5 | |
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Email: info@resistancewelder.com
Tel: 0086-130-8387-7627
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