Name: Helvi Unimig 518N Inverter Welder
Brand: Fepy
SKU: 32418-NOS
Price: 23333.33 AED
Availability: InStock

Question 1

What is the Helvi Unimig 518N Inverter Welder and what can it weld?

Accepted Answer

The Helvi Unimig 518N Inverter Welder is a compact, lightweight welding machine that uses premium inverter technology. It’s designed to deliver a smooth arc with minimal spatter and is suitable for welding mild steel, stainless steel and aluminium.

Question 2

What are the key features and protections of the 518N?

Accepted Answer

- 240V, 15A input power
- Premium inverter technology with IGBT-based performance
- Anti-stick protection to help prevent sticking tungsten/electrode
- Thermal overload protection to safeguard the unit
- Lightweight and portable with a robust casing
- Integrated fan for cool operation
- Digital display and easy control
- Adjustable two-roller wire feed with infinite wire feed speed
- Pulseweld and synergic welding modes for flexible options

Question 3

Which materials can this welder handle, and are there any material-specific considerations?

Accepted Answer

It’s suitable for welding mild steel, stainless steel and aluminium. For aluminium and stainless, ensure you use compatible welding wire and appropriate shielding gas (if required) and select the correct welding mode to optimize arc stability and weld quality.

Question 4

How does the two-roller wire feed and infinite wire feed speed work on the 518N?

Accepted Answer

The 518N features an adjustable two-roller wire feed system with a dial to set the feed speed. The infinite wire feed speed allows you to fine-tune the wire advancement for stable arc control and consistent welds across different thicknesses and wire types.

Question 5

What are pulseweld and synergic modes, and when should I use them?

Accepted Answer

Pulseweld provides a pulsed current option that helps control heat input and reduces distortion, which is useful for thin materials or when welding aluminium. Synergic mode automatically adjusts parameters based on the wire feed speed, making setup quicker and ensuring stable welding across a range of thicknesses.

Question 6

How do I set up and start welding with the 518N?

Accepted Answer

Basic setup steps: connect to a suitable 240V, 15A circuit; connect the ground clamp; choose the welding mode (manual or synergic), select wire type and diameter, adjust the wire feed speed, and set the arc parameters using the digital display. Ensure you have the correct welding wire and the appropriate shielding gas (if applicable) for your material.

Question 7

What safety precautions should I follow when using this welder?

Accepted Answer

- Wear a proper welding helmet with the correct shade for the process
- Use flame-resistant gloves, jacket and safety boots
- Ensure adequate ventilation to manage fumes
- Keep a fire extinguisher nearby and clear the area of flammable materials
- Check electrical connections and grounding before use
- Regularly inspect cables and clamps for wear

Question 8

What maintenance or care does the 518N require to stay in good working order?

Accepted Answer

- Keep the unit clean and free from dust
- Inspect grounding and leads for wear; replace as needed
- Ensure the cooling fan is not blocked and is functioning
- Store in a dry environment to prevent moisture damage
- Periodically check wire wheels and guide rollers for wear

Question 9

What are common issues you might encounter and how can you troubleshoot them?

Accepted Answer

- Arc not starting: check electrode/wire type, polarity, and ground connection
- Excessive spatter: verify wire speed, voltage settings and shielding gas (if used)
- Overheating: pause welding to allow cooling and ensure adequate ventilation
- Irregular arc: inspect connectors and cables for tightness and wear

Question 10

What are typical use cases for the Helvi Unimig 518N?

Accepted Answer

- Home and workshop metal fabrication projects
- Automotive repairs and rust removal tasks
- DIY projects that involve mild steel, stainless steel or aluminium
- Repairs and fabrication of small to medium gauge components

Question 11

How does the 518N compare to other inverter welders on Fepy.com, and which alternative might suit me best?

Accepted Answer

Compared to other inverter welders, the 518N emphasizes a balanced set of features: premium inverter technology, anti-stick and robust protections, versatile wire feed, and both pulseweld and synergic modes for flexibility. For alternatives on Fepy.com, you can explore models like the Unimig 520N Inverter Welder and the Unimig 518M Inverter Welder to gauge differences in wire feed control, modes, and general performance: https://fepy.com/product/unimig-520n-inverter-welder and https://fepy.com/product/unimig-518m-inverter-welder

Helvi Unimig 518N Inverter Welder

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Specification

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