1. Introduction
The HITBOX HBM1200 is a versatile 3-in-1 semi-automatic inverter welding machine designed for MIG, MMA (Arc), and Lift TIG welding processes. This compact and lightweight unit is suitable for various welding tasks on carbon steel and stainless steel, offering high efficiency and ease of use for both beginners and experienced welders. It supports both 110V and 220V power inputs, making it adaptable for different work environments.

Figure 1: HITBOX HBM1200 Welding Machine and Accessories
2. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged. The standard HBM1200 package includes:
- 1x HBM1200 Mig Welder
- 1x 1.8m Earth Clamp
- 1x 1.8m 200A Electrode Holder
- 1x 1.7m MB15 Mig Torch
- 1x Flux Cored Wire (0.5kg)
- 1x User Manual
If your package includes the optional TIG Torch, it will contain:
- 1x HBM1200 Mig Welder
- 1x 1.8m Earth Clamp
- 1x 1.8m 200A Electrode Holder
- 1x 3m MB15 Mig Torch
- 1x Flux Cored Wire (0.5kg)
- 1x 10-25 Plug TIG Torch
- 1x User Manual
3. Setup
3.1 Power Connection
The HBM1200 welding machine supports both 110V and 220V power inputs. Ensure the power source matches the machine's requirements and that the connection is secure.
3.2 Connecting Welding Accessories
- Earth Clamp: Connect the earth clamp cable to the negative (-) terminal on the front panel of the welder. Securely attach the clamp to the workpiece to ensure a good electrical connection.
- Electrode Holder (for MMA): Connect the electrode holder cable to the positive (+) terminal on the front panel for MMA welding.
- MIG Torch: Connect the MIG torch to the appropriate connector on the front panel.
- TIG Torch (Optional): If using the 10-25 Plug TIG torch, connect it to the designated port.
3.3 Wire Installation (for MIG Welding)
For MIG welding, install the flux-cored wire as follows:
- Open the side panel of the welder to access the wire feed mechanism.
- Place the 1kg spool of flux-cored wire onto the spindle.
- Thread the wire through the drive roller mechanism. Ensure the correct groove (0.8mm or 1.0mm) on the drive roller is selected for your wire diameter.
- Feed the wire into the MIG torch liner until it emerges from the contact tip.
- Close the side panel securely.

Figure 2: Wire Feed Mechanism
4. Operating Instructions
4.1 Control Panel Overview
The HBM1200 features a user-friendly control panel with a digital display and adjustment knobs:
- Digital Display: Shows current welding parameters.
- Mode Selection Button (Red button in the middle): Press to cycle through MIG, MMA, and Lift TIG welding modes.
- Current Control Knob ('A'): Adjusts the welding current (amperage).
- Voltage Control Knob ('V'): Adjusts the welding voltage (for MIG mode).
- Wire Feed Speed Knob: Adjusts the wire feeding speed (for MIG mode).

Figure 3: Control Panel
4.2 Welding Modes
The HBM1200 supports the following welding processes:
- MMA (Manual Metal Arc) / ARC Welding: Use with 2.5mm-3.2mm welding rods (e.g., 6013, 7018). Weldable plate thickness: 1-6mm.
- Lift TIG Welding: Requires an optional TIG torch. Weldable plate thickness: 1-3mm.
- No-Gas MIG Welding: Uses flux-cored wire (0.8mm or 1.0mm). Weldable plate thickness: 0.8-3mm.

Figure 4: Weldable Plate Thickness by Mode
4.3 General Operation Steps
- Turn on the welder using the power switch.
- Select the desired welding mode (MIG, MMA, or Lift TIG) by pressing the red button on the control panel.
- Adjust the current and voltage (for MIG) or current (for MMA/TIG) using the respective knobs. Refer to welding charts for recommended settings based on material type and thickness.
- For MIG welding, adjust the wire feed speed.
- Begin welding, ensuring proper safety precautions are followed.
Video 1: HBM1200 3-in-1 Welding Machine Demonstration, showing portability, control panel functions, and welding in MMA, Lift TIG, and No-Gas MIG modes.
4.4 Duty Cycle
The HBM1200 has a rated usage of 40%, meaning it can operate for 4 minutes continuously followed by a 6-minute rest period to prevent overheating. This ensures optimal performance and extends the lifespan of the machine.

Figure 5: Duty Cycle Illustration
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your welding machine.
- Cleaning: Regularly clean the machine's exterior and ventilation openings to prevent dust and debris buildup. Use compressed air to clear internal components if necessary, ensuring the machine is unplugged.
- Torch and Cable Inspection: Inspect welding torches, cables, and connections for wear, damage, or loose fittings before each use. Replace worn parts immediately.
- MIG Nozzle and Contact Tip: For MIG welding, regularly clean the nozzle and replace the contact tip as it wears out to ensure consistent wire feeding and arc stability.
- Wire Feed Mechanism: Keep the wire feed rollers clean and free of debris. Ensure the tension is correctly set for the wire diameter being used.
- Cooling System: The machine is equipped with a cool air radiator. Ensure the cooling fan is unobstructed and functioning correctly to prevent overheating.

Figure 6: Cooling Fan
6. Troubleshooting
If you encounter issues with your HBM1200 welder, consider the following common problems and solutions:
- No Power: Check the power cable connection, wall outlet, and circuit breaker. Ensure the machine's power switch is in the 'ON' position.
- No Arc: Verify that the earth clamp is securely attached to the workpiece and that the welding torch connections are tight. Ensure the correct welding mode is selected and parameters are set appropriately.
- Poor Weld Quality: Adjust current, voltage, and wire feed speed (for MIG) according to the material and thickness. Ensure the workpiece is clean and free of rust or paint. Check for worn contact tips or clogged nozzles in MIG mode.
- Overheating Indication: If the overheat protection light illuminates, stop welding and allow the machine to cool down. Ensure ventilation openings are clear and the duty cycle is respected.
- Wire Feeding Issues (MIG): Check wire spool installation, ensure the wire is not tangled, and verify the drive roller tension is correct. Inspect the MIG torch liner for blockages or damage.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | HITBOX |
| Model Number | HBM1200 |
| Inverter Technology | IGBT |
| Input Voltage | AV220±15%V (Compatible with 110V/220V systems) |
| Frequency | 50/60HZ |
| Wire Feeding Speed | 3-18 m/min |
| Welding Wire Diameter | 0.6 / 0.8 / 1.0 mm (1kg spool max) |
| Output Current Adjustment Range | 35-120A |
| Duty Cycle | 40% (4 min operate, 6 min rest) |
| Efficiency | 85% |
| Net Weight | 6.5 kg |
| Dimensions (L*W*H) | 34 x 13.6 x 24.8 cm |
| Use | Welding carbon steel/stainless steel |
| Certification | CE |
| Insulation Class | F |
| Protection Class | IP21 |
8. Warranty and Support
The HITBOX HBM1200 welding machine comes with a 1-year warranty. For any issues or inquiries regarding the product, please contact HITBOX customer service. Our 24-hour online customer service team is available to assist you.
9. User Tips
No specific user tips from Q&A or reviews are available at this time. Always refer to the safety guidelines provided in the manual and wear appropriate personal protective equipment (PPE) when operating the welding machine.





