Scotle Laser Welding Machine FAQs
Find answers to the most frequently asked questions about Scotle laser welding machines, including welding materials, laser power selection, gas requirements, cooling systems, warranty, maintenance, shipping, and technical support.
Buying Guide & Machine Selection
What materials can Scotle laser welding machine weld?
Scotle laser welding machines can weld most common metal materials, including:
- Carbon Steel
- Stainless Steel
- Aluminum Alloy
- Galvanized Steel
- Titanium Alloy
- Copper Alloy
- Nickel Alloy
Note: Welding of dissimilar metals is generally not recommended.
How thick can a Scotle Laser Welding Machine weld?
The maximum welding thickness of a Scotle laser welding machine depends on the laser power and material type. In general, higher laser power allows deeper penetration and thicker welding capability.
For reference, Scotle fiber laser welding machines typically support the following welding thickness range:
- 700W: up to ~2 mm
- 1000W–1500W: up to ~4 mm
- 2000W: up to ~6 mm
- 3000W: up to ~8 mm
- 6000W: up to ~12 mm
Please note that materials such as aluminum and copper have higher reflectivity, so the actual welding thickness may be slightly lower compared to carbon steel or stainless steel.
For more detailed selection guidance, please refer to the 700W–6000W Laser Welding Machine Power Selection Guide.
Which laser power should I choose?
The correct laser power depends on your material type, thickness, and production requirements.
- 700W–1500W:
Suitable for thin sheet metal, small parts, repair work, and light fabrication. - 2000W:
Ideal for general industrial applications such as stainless steel and carbon steel welding up to medium thickness. - 3000W:
Recommended for heavy-duty industrial production, thicker metal plates, and higher welding speed requirements. - 6000W:
Designed for large-scale industrial fabrication and thick metal welding applications.
In general, higher laser power provides deeper penetration, faster welding speed, and stronger welding stability. However, higher power also requires higher electricity supply and a more robust cooling system.
If you are not sure which model to choose, our engineers can recommend the most suitable configuration based on your application.
For more detailed selection guidance, please refer to the 700W–6000W Laser Welding Machine Power Selection Guide.
Should I choose an air-cooled or water-cooled model?
Air-cooled laser welding machines are suitable for light to medium-duty work, small workshops, and mobile applications. They are compact, easy to use, and do not require a water chiller.
Water-cooled Laser welding machines are designed for industrial production, higher power, and long continuous operation. They offer stronger cooling performance and better stability for heavy-duty welding.
If you need portability and lower cost, choose air-cooled. If you need higher power and industrial stability, choose water-cooled.
What's the difference between a single and dual wire feeder?
Single Wire Feeder (Standard)
Suitable for:
- 0.5–4 mm sheet metal
- Gap ≤1 mm
- Stainless steel
- Carbon steel
Advantages:
- Easy to operate
- Lower cost
Dual Wire Feeder (Optional)
Suitable for:
- 4–8 mm plates
- Gap 1–3 mm
- Aluminum alloy welding
Advantages:
- Better gap filling
- Stronger weld seams
- Higher welding efficiency
Operation & Technical Questions
Is shielding gas required?
Yes. Shielding gas is required for laser welding to ensure stable welding quality and protect the weld seam from oxidation, blackening, and porosity. Proper gas selection also helps extend the service life of the protective lens.
In most applications, inert gas such as argon or nitrogen is used depending on the material and welding requirements.
What gases are recommended?
The recommended shielding gas depends on the material and application.
- Stainless steel / Carbon steel: Argon is recommended for stable weld quality. Nitrogen or compressed air can be used for lower-cost applications.
- Aluminum / Titanium alloys: High-purity argon (≥99.99%) is required to prevent oxidation and porosity.
- Cutting function: Oxygen is used for carbon steel, while nitrogen is used for stainless steel and aluminum.
- Cleaning function: No shielding gas is required; only compressed air is needed.
Using the correct gas helps ensure stable performance and high-quality welding results.
What wire diameter is supported?
1500W/2000W: Supports welding wire with a diameter of 0.8–1.6 mm (suitable for stainless steel, carbon steel, and aluminum).
3000W: Supports welding wire with a diameter of 0.8–2.0 mm, and dual wire feeder models support up to 2.5 mm wire.
The minimum wire diameter is 0.8 mm, and the maximum wire capacity increases with higher laser power and configuration.
Can the Scotle 4-in-1 Laser Welding Machines Perform Spot Welding? What Is the Minimum Thickness?
Yes. The Scotle 4-in-1 laser welding machine supports spot welding, including single spot welding, continuous spot welding, and fish-scale welding.
Spot welding is mainly used for fixing and positioning metal parts before continuous welding, rather than structural reinforcement welding.
The minimum welding thickness depends on the material type and laser power. It is commonly used for precision welding of thin metal sheets such as stainless steel, carbon steel, and aluminum.
Can the Scotle BWT 4-in-1 Be Upgraded to a 5-in-1 Laser Welding Machine?
No. The Scotle BWT 4-in-1 laser welding machine cannot be directly upgraded to a 5-in-1 model.
The hardware architecture and control system of the 4-in-1 machine are not compatible with the additional 5-in-1 functional module. Upgrading would require major system modification or full equipment replacement, which is not cost-effective.
If you need 5-in-1 functionality, we recommend selecting a dedicated 5-in-1 laser welding machine model.
Cooling & Maintenance System
What cooling water should I use?
Deionized water or RO pure water is required for the cooling system (resistivity ≥ 1MΩ·cm). Tap water and mineral water are strictly prohibited, as they may cause scaling, clogging, and damage to the cooling system.
It is recommended to use laboratory-grade deionized water that meets the GB6682 standard, with a conductivity of ≤ 10 μS/cm.
When Should Antifreeze Be Used and How to Use It?
Antifreeze should be used when the ambient temperature drops below 5°C to prevent the water-cooling system from freezing and damaging the equipment.
Before use, the original cooling water must be completely drained and the pipeline cleaned.
Then, mix specialized antifreeze with deionized water in the recommended ratio (commonly 3:7, suitable for temperatures down to -20°C). After mixing evenly, fill the cooling system. It is strictly forbidden to use pure antifreeze directly.
When the temperature rises in spring, the antifreeze should be drained and replaced with deionized water for normal operation.
What is the correct antifreeze mixing ratio?
The conventional mixing ratio for antifreeze used in laser equipment is 30% dedicated antifreeze + 70% deionized water (or distilled water), suitable for environments with a minimum temperature of about -10°C.
For lower temperatures, the ratio can be adjusted depending on conditions, but it is generally recommended not to exceed 50% antifreeze concentration.
- 0°C to -10°C environment: 20%–30% antifreeze + 70%–80% deionized water
- -10°C to -20°C environment: 30%–40% antifreeze + 60%–70% deionized water
- Below -20°C environment: 40%–50% antifreeze + 50%–60% deionized water
Always use deionized or distilled water for mixing. Tap water is strictly prohibited to prevent scaling and blockage in the cooling system.
What Consumables Need Regular Replacement?
The main consumable parts that require regular replacement on the Scotle laser welding machine include:
Gun head accessories:
Copper nozzles (for welding, cutting, and cleaning), protective lens, focusing lens, wire feeding nozzle, and sealing rings.
Wire feeding system:
Welding wire, wire feeding wheel, and wire feeding tube.
Cooling system:
Deionized water or specialized coolant should be replaced regularly to maintain stable cooling performance.
Regular maintenance and timely replacement of these consumables help ensure stable welding quality and extend machine service life.
Can the machine operate continuously?
Yes. Under normal cooling conditions and stable voltage, the Scotle laser welding machine can operate continuously for up to 24 hours, as it is equipped with an industrial-grade cooling system designed for long-time operation.
It is recommended to check the protective lens, nozzle, and water temperature every 12 hours to ensure stable performance and avoid overheating or contamination.
Installation & Electrical Requirements
What power supply is required?
The power requirements vary depending on the laser power model:
- 1500W model: 220V / 50Hz single-phase power, with a rated input power of approximately 4.5kW (22.5A)
- 2000W model: 220V / 50Hz single-phase power, with a rated input power of approximately 6kW (27A)
- 3000W model: 380V / 50Hz three-phase power, with a rated input power of approximately 9kW (30A)
The allowable voltage fluctuation range is within ±5%, and it is recommended to use a voltage stabilizer to ensure stable operation and protect the equipment.
Can The Machine Operate In An Unstable Voltage Environment? What Should I Do If The Voltage Is Unstable?
No. The machine is not recommended to operate in an unstable voltage environment. Voltage fluctuations exceeding ±5% may cause unstable laser output, affect welding quality, and may even damage the laser source.
If the voltage is unstable, please take the following measures:
- Install a dedicated voltage stabilizer for laser equipment to keep voltage fluctuations within ±3%.
- Avoid sharing power with high-power equipment to reduce electrical interference.
- Ensure proper grounding and stable wiring of the power supply system.
- Stop operating the machine if the power supply cannot be stabilized.
A stable voltage supply is essential for safe operation and consistent welding performance.
Do you provide installation and training?
Yes. We provide full installation and operation support for all Scotle laser welding machines.
We offer:
- Installation guidance – Step-by-step video tutorials and detailed operation manuals.
- Remote training – Professional engineers provide online training and technical guidance.
- Operation support – Assistance with parameter settings, machine setup, and troubleshooting.
- After-sales technical support – Lifetime technical support for all customers.
Our goal is to ensure that every customer can operate the machine smoothly and efficiently after delivery.
Warranty & After-Sales Support
What certifications does the machine have?
The Scotle laser welding machine is certified with international safety and quality standards, including:
- CE Certification (EU safety compliance)
- RoHS Certification (environmental compliance)
- FDA Certification (U.S. compliance for laser equipment)
- IEC 60825-1 Certification (laser safety standard)
These certifications ensure that the machine meets strict international requirements for safety, environmental protection, and laser operation reliability.
What warranty does Scotle provide?
The Scotle laser welding machine comes with a comprehensive warranty and lifetime support policy:
- Complete machine: 1-year warranty
- Core laser source: 2-year warranty
- Chiller system: 1-year warranty
- Laser gun head: 1-year warranty (covers normal use faults only)
Consumable and wear parts such as nozzles and lenses are not covered by warranty.
We also provide lifetime free technical support to ensure long-term stable operation of the machine.
Can I test my materials before ordering?
Yes. We support material testing before ordering.
You can send us your samples, and our engineers will perform laser welding, cutting, or cleaning tests according to your requirements. We will then provide videos, photos, and technical feedback based on the test results.
This helps you verify the machine performance on your specific materials before making a purchase decision.