Laser Welding Equipment Safety Guidelines

Laser Beam Safety Protection

The Panasonic laser processing robot system outputs high-power laser at level 4, and in case of misuse, it may lead to serious personal accidents.

1) Please wear laser protection goggles with suitable wavelengths. To prevent laser from invading around the eyes, please wear goggles with side protection.

2) Do not directly look at the laser outlet or its path.

3) For input-side power source construction, site selection, high-pressure gas handling and piping, and post-weld workpiece handling and waste disposal, please comply with regulations and company internal rules.

4) Do not directly view the processing point with naked eyes or optical instruments.

5) Do not let the body enter the laser path.

6) Please use materials with suitable wavelengths that the laser cannot penetrate or easily penetrate to enclose the laser processing robot system, and post appropriate warning signs.

7) Install interlock switches on the doors in the safety management area so that once the door is opened, the equipment stops operation, ensuring double safety.

8) Set the height of the beam path to avoid personnel height.

Matters to be Observed When Using Laser Processing

1) Laser processing must not be used for purposes other than welding, cutting, such as freezing pipe thawing, etc.

2) For input-side power source construction, site selection, high-pressure gas handling and piping, and post-weld workpiece handling and waste disposal,regulations and company rules must be followed.

3) Surround the area to prevent personnel from inadvertently entering.

4) Installation, maintenance, inspection, and repair should be carried out by qualified personnel or those with a deep understanding of the laser processing system.

5) Operation should be carried out by personnel who truly understand the user manual, possess the knowledge and skills to ensure safety use.

Electric Shock

Contact with live parts may cause fatal electric shock, burns, and other accidents.

1) Grounding construction should be carried out by qualified electricians according to regulations (electrical equipment technical foundation).

2) Installation, maintenance, and inspection work should be carried out after cutting off all power for more than 5 minutes.

3) Do not use cables with insufficient capacity, damage, or exposed conductors.

4) The cable connection should be securely tightened and fixed.

5) Do not use when the casing or cover is removed.

6) Do not use damaged or wet gloves.

7) Use a safety rope when working at heights.

8) After repairing damaged parts during regular maintenance, they should be used again.

9) Cut off the generator input power when not in use.

10) Do not touch live parts.

Electromagnetic Hazards

1) Electromagnetic waves generated around the operating laser processing robot system may have adverse effects on medical equipment such as pacemakers, hearing aids, etc. Personnel wearing medical devices should not approach the site of the laser processing robot system without permission from a doctor.

2) All electronic devices and safety devices around the laser processing robot system need to be effectively grounded, and if necessary, additional electromagnetic shielding facilities should be added.

3) The laser processing robot system should not share grounding with other equipment.

4) When the reverse noise generated by the laser processing robot system affects external machines (fixture program devices, proximity switches, area sensors, etc.), countermeasures should be formulated according to the external machine’s user manual.

Exhaust Equipment and Protective Gear

In narrow welding and cutting spaces, suffocation may occur due to insufficient oxygen. Gases and fumes produced during welding and cutting are harmful to health.

1) In locations specified by regulations (labor safety and health regulations, hypoxia prevention regulations), adequate ventilation or the use of air respirators is required.

2) Local exhaust devices specified by regulations (labor safety and health regulations, dust hazard prevention regulations) are recommended to be used with respiratory protective equipment with high protective performance and electric fans.

3) In areas such as enclosures, boilers, and ship compartments where heavier-than-air gases such as carbon dioxide and argon may accumulate, adequate ventilation or the use of air respirators is necessary.

4) Adequate ventilation or the use of air respirators is necessary during welding and cutting operations in narrow areas, and supervision by trained personnel is required.

5) Welding and cutting operations should not be conducted near degreasing, cleaning, or spraying operations, as harmful gases may be produced.

6) When welding and cutting coated steel plates, harmful gases or fumes may be produced. Adequate ventilation or respiratory protective equipment must be used.

Fire, Explosion, Rupture

1) Avoid contact between scattered splashes and combustible materials. Remove combustible materials or cover them with flame-retardant materials.

2) Do not weld or cut near flammable gases.

3) Do not approach hot base materials immediately after welding or cutting.

4) Remove combustible materials from the vicinity when welding or cutting on platforms, floors, walls, etc.

5) The cable connection should be securely tightened and fixed.

6) Do not weld or cut gas-filled pipes, sealed enclosures, pipes, etc., internally.

7) Fire extinguishers should be placed near the operating laser processing robot system for emergency use.

8) Flammable substances (gasoline, alcohol, ethanol, diluents, etc.) should not be used near the laser processing equipment and operating points.

9) When processing combustible materials (wood, paper, resin, rubber, etc.), careful deliberation and monitoring of workpieces or residues are necessary to prevent the spread of fire.

Protective Equipment

1) Protective curtains should be set up around the welding and cutting site to prevent eye injuries.

2) When monitoring welding and cutting, wear adequately shaded protective goggles or face shields.

3) Use welding leather gloves, long-sleeved clothing, foot covers, leather aprons, and other protective equipment.

4) When noise is high, wear protective equipment (earplugs, earmuffs, etc.) according to relevant regulations.

Burn Awareness

Even when wearing protective gloves, do not touch hot base materials immediately after welding or cutting.

Gas Cylinders and Gas Flow Regulators

1) Use gas cylinders according to regulatory requirements.

2) Use affiliated or recommended gas regulators.

3) Before use, read the gas flow regulator’s user manual and follow the precautions.

4) Gas cylinders should be fixed on dedicated cylinder supports.

5) Gas cylinders should not be exposed to high temperatures.

6) When opening the gas cylinder valve, do not approach the cylinder opening with your face.

7) When not in use, be sure to install the protective cover on the gas cylinder.

8) Disassembly and repair of gas regulators should be carried out by personnel with professional knowledge. Non-designated professionals should never disassemble or repair them.

Handling Heavy Objects

1) Operation should be carried out by personnel with operational qualifications in accordance with the Labor Safety and Health Law.

2) When moving, consult with the production company and follow the methods described in the relevant manual.

3) Wear safety shoes.

4) Do not approach or enter the area beneath the equipment while moving.

5) Do not support laterally during transportation.

6) When hoisting with a overhead crane, ensure that the steel wire rope tied to the four lifting rings is of equal length.

7) The lifting angle of the laser generator should be below 90°.

8) Do not use lifting rings of different specifications.

9) Secure the lifting rings and confirm there is no looseness before hoisting (tightening torque: 60N·m±6N·m).

10) Securely install the panel and move only when it is confirmed that it will not fall.

11) Forklifts should be used to transport items with wooden packaging.

Prohibition of Equipment Disassembly

1) For equipment maintenance, consult the after-sales technical service department of the equipment manufacturer for solutions.

2) Follow the relevant regulations of the equipment manufacturer when conducting internal inspections, installation, and disassembly of components.

Attention to Rotating Equipment Parts

1) Hands, hair, clothing, etc. should not come near rotating cooling fans, as they may get entangled or pulled in.

2) The equipment should not be used when the casing or cover is not installed.

3) When the casing or cover needs to be removed for maintenance, inspection, or repair, it should be carried out by personnel with professional qualifications, with the surrounding area partitioned off to prevent unrelated personnel from entering.

Insulation Aging

1) To prevent splashes, iron filings, etc. from entering the equipment, use it away from the equipment.

2) To prevent dust accumulation from causing insulation deterioration, clean the interior regularly.

3) When splashes or iron filings enter, use methods such as blowing with dry air after turning off the power switch and distribution cabinet switch.

4) To prevent dust from entering, do not use the equipment in a state where screws (including lifting rings) or the casing have been removed.

Emergency Shutdown, Laser Pause, and Remote Interlock Release

Before releasing the emergency shutdown, laser pause, and remote interlock, ensure the safety of the operator. Do not allow the laser to directly irradiate the human body to prevent personal accidents.

Grounding Protection

Implement separate grounding for the laser as Type D grounding. Otherwise, malfunctions or leakage may lead to electric shock.

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