CT-520 - Welding machine Vevor - Free user manual and instructions
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| Product type | MMA/TIG arc welding machine |
| Brand | Vevor |
| Model | CT-520 |
| Dimensions (L x W x H) | 345 x 145 x 235 mm |
| Net weight | 4.5 kg |
| Power supply | 220 V - 240 V, 50/60 Hz |
| Welding current | 20 A - 200 A (adjustable) |
| Open circuit voltage | 60 V |
| Duty cycle | 60% at 160 A |
| Main functions | MMA welding, TIG welding, overheating protection, cooling fan |
| Current adjustment | Potentiometer with digital display |
| Current type | Direct current (DC) |
| Torch connector | Standard euro connector |
| Ground clamp | Included, with 2 m cable |
| Torch cable | 3 m, with electrode holder |
| Maintenance and cleaning | Clean the connectors and ventilation grille with a dry cloth, check the cables regularly |
| Safety | Overcurrent protection, thermal protection, and automatic shutdown in case of overheating |
| Spare parts and repairability | Electrodes, cables, ground clamp, TIG torch, fan available as spare parts |
| General information | Use in workshop and DIY, forced cooling by fan |
Frequently Asked Questions - CT-520 Vevor
What amperage should I choose for welding steel?
For MMA welding, the amperage depends on the thickness of the part and the diameter of the electrode. For a 2.5 mm electrode, set the current between 70 A and 90 A. For a 3.2 mm electrode, use 100 A to 130 A. Start low and adjust until you get a stable arc. Use the current adjustment to adapt the power.
Can I weld stainless steel with this machine?
Yes, the CT-520 can weld stainless steel using stainless steel electrodes (for example E308). For optimal results, clean the surface and use an appropriate gas flow rate if you use the TIG function.
What is the difference between MMA and TIG welding?
MMA (arc) welding uses a coated electrode that melts and creates the weld. TIG welding uses a tungsten electrode and a separate filler metal, allowing a more precise and aesthetic weld. The CT-520 offers both modes.
How do I install the ground clamp?
Attach the ground clamp to the workpiece, near the welding area, after turning off the machine. Make sure the contact surface is clean and free of paint or rust to ensure a good electrical circuit.
The machine heats up quickly, is this normal?
It is normal for the machine to heat up during use, especially at high amperage. The cooling fan activates automatically. The duty cycle is 60% at 160 A, meaning after 6 minutes of welding, you must let it cool for 4 minutes. If the thermal protection activates, stop welding and let it cool.
What electrodes should I use with the CT-520?
For MMA welding, use rutile electrodes (E6013) for mild steel, basic electrodes (E7018) for more demanding work, or stainless steel electrodes (E308) for stainless steel. Check the diameter and recommended amperage.
Why are my welds porous?
Porosity is often caused by too high a current, too fast a welding speed, incorrect gas flow, or a dirty surface. Clean the part carefully, use a suitable current, and check the gas if you are in TIG. The gas flow rate should be set around 10-15 L/min.
How do I set the TIG function?
To weld in TIG, connect the TIG torch to the euro connector and the gas cylinder with the regulator. Select TIG mode on the panel, set the current according to the metal thickness, and open the gas valve. Use a suitable tungsten electrode.
Can this machine weld aluminum?
Welding aluminum is difficult with a standard MMA/TIG machine because it requires alternating current (AC). This machine provides direct current (DC), so it is not suitable for aluminum. Use it for steel or stainless steel.
What safety precautions should I take?
Always wear a welding helmet with filter glass, gloves, and flame-resistant clothing. Before welding, keep any flammable materials away, work in a ventilated area, and check that the cables are in good condition. Never touch the hot workpiece without protection.
User questions about CT-520 Vevor
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USER MANUAL CT-520 Vevor
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Product information
Brand : Vevor
Model : CT-520
Category : Welding machine