BRAND LINCOLN MODEL INVERTEC STT 2 TROLLEY LF 30 (LINC FEED) POWER 200 A VOLTAGE 380 V

A wire welder, or MIG (Metal Inert Gas) welder, is a machine used for precise, high-quality welds. Here is a detailed overview of its features:

### Parts of a wire welder

1. **Control Unit**: The main part of the machine, which includes all controls and electronic components.
2. **Welding Torch**: The hand tool used by the welder to perform welding.
3. **Ground Lead**: Conducts return current to the welding power source.
4. **Wire Feeder**: Mechanism that pushes welding wire through the torch.
5. **Wire Drive Roller**: Part of the wire feeder that helps push the wire toward the torch.
6. **Inert gas tank**: Contains shielding gas, such as argon or CO2, which protects the weld from oxidation.
7. **Gas Flow Regulator**: Controls the amount of gas flowing to the torch.
8. **Control Panel**: Allows the operator to adjust welding parameters, such as wire speed and current.

### Executable processes

- **Welding**: Joins two pieces of metal by fusion.
- **Joint Filling**: Adds filler material to fill gaps between joints.
- **Repairs**: Performs repairs on damaged metal components.

### Workable materials

- **Mild steel**
- **Stainless steel**
- **Aluminium**
- **Copper**
- **Brass**
- **Non-ferrous metals (with appropriate gas and wire)**

### Better brands

Some of the best-known and most respected manufacturers of wire welders include:

- **Lincoln Electric**: Renowned for the quality and reliability of its machines.
- **Miller Electric**: Offers innovative and high-performance machines.
- **Hobart**: Known for the robustness and durability of its welding machines.
- **ESAB**: Renowned for advanced and versatile welding solutions.
- **Kemppi**: Appreciated for the high technology and efficiency of its machines.

### Types of wire welders

- **MIG (Metal Inert Gas) welders**: They use inert gas such as argon or a mixture of gases to protect the weld.
- **MAG (Metal Active Gas) welders**: They use active gases such as CO2 or gas mixtures for welding protection, especially suitable for carbon steel.
- **MIG/MAG welders**: Versatile machines that can use both inert and active gas, adaptable to different materials.

### Wire welding machine power supply

- **Electric**: The most common power source, it can be single-phase or three-phase depending on the power of the machine.
- **Generator**: In environments without stable electrical power, a generator can be used to power the welder.

### Advantages of buying a used wire welder

1. **Reduced Cost**: Used machines are generally much cheaper than new ones.
2. **Faster return on investment**: The lower initial cost allows you to recover your investment faster.
3. **Proven Reliability**: Well-maintained machines have already proven their durability and reliability.
4. **Immediate availability**: Used machines are often ready for use without waiting times for delivery.
5. **Possibility of customization**: It is possible to make changes or updates to adapt the machine to specific production needs.
6. **Compatibility with existing equipment**: A used machine can be compatible with existing equipment and systems, reducing additional investments.

### Final thoughts

Buying a used wire welder can be a strategic choice for companies that want to contain costs without compromising the quality and efficiency of welding. However, it is essential to check the condition of the machine, the availability of spare parts and the manufacturer's technical support to ensure that the welding machine can operate to its maximum capabilities.