A handheld laser welder is quick and precise, but how you use it decides how much of that you get. This article lists practical tips for getting the most out of a refrigerant handheld laser welding machine in a shop or in the field.
Tips
1. Know what your machine can do
Before you weld, learn the power, the cooling system and the materials the machine handles. The Ascent refrigeration welders weld aluminum, stainless steel, brass and steel, and the capability tables on the product pages give the maximum thickness for each metal. Read the manual and attend the manufacturer's training.
Read also: Industries that use laser cutting technologies
2. Put safety first
A handheld laser welder is a Class 4 laser. Wear laser safety glasses rated for the laser's wavelength, plus gloves and heat-resistant clothing. Minimum OD 5; prefer OD 7 or 8. Enclose the work area with laser-rated partitions, vent the fumes, and keep flammable material away. See our laser safety page.
3. Prepare the surface
Remove rust, paint and debris before you weld, and keep the joint clean and aligned. A clean surface gives a stronger, smoother weld and less rework.
4. Set the machine for the material
Each metal responds differently to a laser. Adjust the power, speed and focus for the material and thickness, and test on a scrap piece first. The Ascent welders have a three-knob control for laser power, wobble frequency and wobble length, and an Android app for saving settings.
5. Move steadily
Smooth, steady motion prevents gaps and weak spots. Avoid sudden jerks or pausing in one spot. A consistent pass looks better and needs less touch-up.
6. Use the cooling system as designed
The Ascent welders are cooled by a refrigerant heat pump with two circuits. They are rated for a 100% duty cycle, so you can weld continuously. Keep the vents clear and work within the rated range of -20°C to +60°C (-4°F to +140°F).
7. Keep the equipment clean
Clean the lenses and nozzles after each session, and check the wire, hoses and connectors for wear. The Ascent welder package includes spare protective lenses and nozzles. Service the machine as the maker advises.
8. Light the work area
Good lighting makes the weld point easy to see. Shadows lead to errors and uneven welds.
9. Position yourself comfortably
Hold the torch at the right angle and set your body, the workpiece and the laser so you have control. The Ascent torch weighs 1.32 lb (600 g), which helps over a long shift.
10. Keep a log
Write down the settings, material and method for each job. A log helps you repeat good welds and avoid repeating mistakes.
11. Use jigs and clamps
When you weld several parts, hold them with jigs, clamps or templates. It reduces errors and speeds the work.
12. Train everyone who uses it
If several operators share a machine, each should get proper training. Ascent's training takes 3-4 hours. The operator remains responsible for completing the required training, following approved process controls and meeting every laser-safety requirement.
13. Cut down on distractions
A clear, focused work area helps operators pay attention to each weld.
14. Inspect your work
Check welds for quality and consistency, and adjust your technique when needed. It prevents costly rework.
15. Upgrade with care
Accessories and attachments may help, such as the dual wire feeder and the range of nozzle tips. Judge each by your own jobs.
Read also: Starting a mold repair business using fiber laser welding
Summary
Know your machine, work safely, prepare the surface, set the parameters for the material and keep the equipment clean, and the welder gives you its speed and precision. Ascent Lasers Pro sells refrigeration handheld fiber laser welders with shipping, installation and operator training at your facility included. The handheld welder carries a 2-year warranty. It welds aluminum, stainless steel, steel and brass, and Ascent also sells CO₂ and fiber laser cutters. Contact us to learn more.
FAQs
Q1: Can a handheld laser welder weld all metals?
No. It welds aluminum, stainless steel, steel, brass and other metals, within the thickness limits for the model. Each metal needs its own power and speed settings.
Q2: How often should I service a handheld laser welder?
Follow the maker's schedule. Clean lenses regularly, and inspect parts so small problems do not cause downtime.
Q3: Is training necessary for beginners?
Yes. Training covers safety and technique, and it improves weld quality.
Q4: What are the benefits of refrigerant cooling?
A refrigerant heat pump keeps the laser at a steady temperature, so the welder can run continuously, and it needs no water.
Q5: Can I use a handheld laser welder on large projects?
Yes. The cable reaches 10 m or 15 m, and planning and jigs help keep large jobs manageable.
