Riland MIG-350 I V4c1 Industrial Grade Dual-Purpose Welder

1. Introduction

The Riland MIG-350 I V4c1 is a high-performance industrial-grade dual-purpose welding machine designed for manual welding operations, including MIG, MAG, MMA, and ARC welding. It utilizes advanced IGBT high-frequency inverter technology, ensuring high efficiency, stability, and energy saving with low loss and high output. This welder is suitable for various metal materials and is widely used across industries such as construction, machinery manufacturing, pipeline installation, shipbuilding, automobile maintenance, and aerospace.

Key features include a deep welding process for full penetration on medium and thick carbon steel plates, a 1.4mm carbon steel expert database for improved efficiency, high-speed DSP fully digital and accurate control for stable arc length, and an all-digital double closed-loop grating feedback wire delivery system for precise and stable wire feeding.

Figure 1.1: Riland MIG-350 I V4c1 in an industrial welding application, highlighting ease of use, simple process, and wide applications.

2. Safety Information

Always prioritize safety when operating welding equipment. Failure to follow safety precautions can result in serious injury or death.

• Electric Shock: Welding current can cause fatal electric shock. Ensure proper grounding, inspect cables for damage, and wear dry, insulated gloves.
• Fumes and Gases: Welding produces fumes and gases that can be hazardous to health. Work in a well-ventilated area or use a fume extractor.
• Arc Rays: Arc rays can burn eyes and skin. Always wear a welding helmet with appropriate shade, safety glasses, and protective clothing.
• Fire and Explosion: Welding sparks and hot metal can cause fires or explosions. Keep flammable materials away from the welding area.
• Hot Parts: Welded materials and equipment can remain hot for a long time. Use insulated gloves and allow materials to cool before handling.
• Noise: High noise levels can damage hearing. Wear hearing protection.

3. Product Overview

The Riland MIG-350 I V4c1 welder features a robust design with an intuitive control panel and essential connection points for various welding processes.

Figure 3.1: Front panel of the Riland MIG-350 I V4c1 Welder, showing controls and connections.

3.1 Main Components and Controls

• Digital Displays: For current and voltage readings.
• Control Knobs: Adjust welding current, voltage, and wire feeding speed.
• Mode Selector: Switch between MIG, MAG, MMA, and ARC welding modes.
• Power Indicator Lights: Indicate power status, overload, and other operational states.
• Positive (+) and Negative (-) Terminals: For connecting welding cables.
• Gas Inlet: For connecting the shielding gas cylinder (for MIG/MAG welding).
• Wire Feeder Connection: For connecting the external wire feeder (if applicable for split units).

Figure 3.2: Side view of the welder, illustrating its wide range of applications.

4. Setup Instructions

Before operating the welder, ensure all connections are secure and the work area is prepared.

4.1 Power Connection

1. Ensure the welder's power switch is in the 'OFF' position.
2. Connect the power cord to a 220V (±15%) power supply. Verify the power outlet can handle the welder's rated input capacity of 5.6KVA.

4.2 Welding Cable and Earth Clamp Connection

1. Connect the welding torch cable to the appropriate terminal (usually positive for MIG/MAG, or as per electrode polarity for MMA/ARC).
2. Connect the earth clamp cable to the remaining terminal.
3. Securely attach the earth clamp to the workpiece or a clean, bare metal part of the welding table, ensuring good electrical contact.

4.3 Welding Wire Installation (MIG/MAG)

1. Open the wire feeder compartment.
2. Place the welding wire spool (0.8mm or 1.0mm) onto the spindle, ensuring it rotates freely.
3. Thread the welding wire through the guide tube and into the drive rollers.
4. Close the drive roller tension arm and adjust the tension appropriately (not too tight to crush the wire, not too loose to slip).
5. Feed the wire through the torch liner until it emerges from the contact tip.

4.4 Shielding Gas Connection (MIG/MAG)

1. For gas-shielded welding, connect the gas hose from the welder to a CO2 or mixed gas cylinder regulator.
2. Ensure all connections are tight to prevent gas leaks.
3. Open the gas cylinder valve and adjust the flow rate on the regulator to the recommended setting for your welding application.

5. Operating Instructions

Follow these steps for safe and effective welding with your Riland MIG-350 I V4c1.

5.1 Power On and Mode Selection

1. Turn on the main power switch of the welder. The power indicator light should illuminate.
2. Select the desired welding mode (MIG, MAG, MMA, or ARC) using the mode selector switch on the control panel.

5.2 Parameter Adjustment

1. For MIG/MAG Welding: Adjust the welding current (40-90A), voltage (up to 61V), and wire feeding speed (up to 15 m/min) according to the material thickness and wire diameter. The digital displays will show the set values.
2. For MMA/ARC Welding: Adjust the welding current (40-90A) based on the electrode type and diameter.
3. Perform test welds on scrap material to fine-tune settings before working on the actual project.

5.3 Welding Process

1. Wear all necessary personal protective equipment (welding helmet, gloves, protective clothing).
2. Position the workpiece and earth clamp correctly.
3. Initiate the arc (for MMA/ARC) or pull the trigger on the MIG torch to start welding.
4. Maintain a consistent travel speed and arc length for optimal weld quality.
5. The welder features built-in over-temperature and over-current protection, which will automatically shut down the machine if limits are exceeded. Allow the machine to cool down before resuming operation.

Figure 5.1: Examples of real welding effects on rebar, pipe, I-beam, steel structure, and angle iron.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your welding machine.

• Daily: Inspect welding cables, torch, and earth clamp for damage. Clean the contact tip and gas nozzle (MIG/MAG).
• Weekly: Check wire feeder rollers for wear and cleanliness. Clean dust and debris from the machine's ventilation openings using compressed air.
• Monthly: Inspect internal components for dust accumulation (if comfortable opening the casing, otherwise consult a professional). Check all electrical connections for tightness.
• Storage: Store the welder in a dry, clean environment away from excessive dust and moisture.

7. Troubleshooting

Refer to this section for common issues and their solutions.

8. Specifications

Detailed technical specifications for the Riland MIG-350 I V4c1 Welder.

Figure 8.1: Quality Management System, Attestation of Compliance, and Electromagnetic Compatibility Directive certifications.

9. User Tips

• Material Preparation: Always ensure the workpiece is clean and free of rust, paint, or oil for the best weld quality.
• Practice Makes Perfect: If new to welding, practice on scrap pieces to get a feel for the machine's settings and your technique.
• Gas Flow: For gas-shielded welding, maintain the correct gas flow rate to prevent porosity in the weld. Too little gas, or too much, can negatively impact the weld.
• Wire Stick-out: Keep a consistent wire stick-out (the length of wire extending from the contact tip) for stable arc and penetration.
• Duty Cycle Awareness: Pay attention to the machine's duty cycle. Exceeding it can trigger the over-temperature protection and shorten the machine's lifespan.

10. Warranty and Support

The Riland MIG-350 I V4c1 welding machine comes with a 1-year warranty. A Machinery Test Report and Video Outgoing-Inspection are provided with the product, ensuring quality and performance.

10.1 Contact Information

For technical support, warranty claims, or any inquiries, please contact:

• Email: aii@sdkeda.com
• Mobile: +8617861990680