A Complete List of Process Parameters for Handheld Welding Lasers to Solve Welding Problems

A Complete List of Process Parameters for Handheld Welding Lasers to Solve Welding Problems

In recent years, handheld laser welding equipment has developed particularly rapidly in the field of laser applications, gradually replacing traditional welding methods with advantages such as small deformation, easy operation, fast speed, energy saving and environmental protection, and quickly covering many industry scenarios, such as doors and windows, home appliances, metal advertising, etc. However, there are still common pain points such as high price, poor quality, difficult operation, and frequent alarms. To address these pain points, Raycus Laser has launched various models of water-cooled and air-cooled lasers in the welding series, and has quickly become popular with the characteristics of lightweight, high efficiency, high integration, and good welding effect.

What are the application process parameters that affect the handheld welding effect?This article will analyze based on the actual test results and list the process parameters that have a greater impact on the welding effect for customers' reference and analysis.

Laser power

Use a laser device equipped with the Raycus Welding Series RFL-C025H handheld welding laser to perform surfacing welding on stainless steel. When other process parameters remain unchanged, change the laser output power and observe the depth and width of the weld after welding. The detailed data is shown in Table 1 below. It can be found that as the power increases, the deeper the depth of weld after welding, the wider the weld width. This shows that the higher the laser power, the stronger the welding ability of the handheld welding equipment. Table 1 shows the welding ability of lasers with different powers.

Use a laser device equipped with the Raycus Welding Series RFL-C025H handheld welding laser to perform surfacing welding on stainless steel. When other process parameters remain unchanged, change the laser output power and observe the depth and width of the weld after welding. The detailed data is shown in Table 1 below. It can be found that as the power increases, the deeper the depth of weld after welding, the wider the weld width. This shows that the higher the laser power, the stronger the welding ability of the handheld welding equipment. Table 1 shows the welding ability of lasers with different powers.

Table 1

Wire feeding speed

Handheld laser welding generally uses laser wire welding, and a wire feeder will be configured as the laser wire feeding device. The wire feeding speed of the wire feeder will also affect the welding capacity of the equipment. As shown in Table 2 below, the welding conditions on aluminum alloy at different wire feeding speeds when the power is 1000W, the welding head swing is 3mm, and the frequency is 50Hz. It can be found that when other parameters remain unchanged, the faster the wire feeding speed, the shallower the penetration depth, and the worse the welding capacity.

Table 2

Welding head swing and frequency

Aluminum alloy was welded on a laser device equipped with the Raycus Welding Series RFL-C015H1 handheld welding laser. The single variables were controlled as swing amplitude and swing frequency, and the penetration depth and width after welding were observed, as shown in Tables 3 and 4. It can be found that with the increase of swing amplitude, the width of the weld surface becomes significantly larger, but when the swing amplitude is 4 or 5 mm, the swing speed of the welding head will not meet the requirements, and the weld surface morphology will be discontinuous; with the increase of frequency, the welding penetration becomes lower, but when the frequency exceeds 100 Hz, the surface morphology also becomes discontinuous.

Other parameters

In addition to the process parameters listed above, which will affect the welding effect, there are some other external conditions that will also have a certain impact on the effect of laser handheld welding, such as the selection of auxiliary gas during welding, the selection of welding processing copper nozzles and the selection of welding wires. Among them, nitrogen or argon is the best auxiliary gas, and the processing copper nozzle is selected according to the specific welding method. Based on the above test content, when using the handheld welding equipment equipped with the Raycus laser welding series of water-cooled special lasers, the recommended welding parameters are: welding power is 10-100%, wire feeding speed is less than 20mm/s, swing amplitude is 2-3mm, frequency is 30-80Hz, welding shielding gas uses high-purity nitrogen (purity ≥99.99%) or argon (purity ≥99.99%), gas flow rate is 15-20L/min. Select the corresponding welding wire according to the corresponding material and thickness.