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The hot development and problems of hand-held laser welding

Views:0     Author:hu     Publish Time: 2021-02-17      Origin:dapeng

Laser marking, cutting and welding are the three most important applications. In the past ten years, laser marking was the first to increase the volume, including extended laser engraving. Now the market size has exceeded 20 billion; and laser cutting has gone from the earliest YAG, CO2 laser cutting to fiber laser cutting, in the past 6 years The market has also ushered in heavy volume, and the current market output value exceeds 30 billion. Laser welding has always been optimistic, but the market demand has not developed significantly. Until a few years ago, domestic new energy vehicles showed explosive growth, and the large-scale expansion of power batteries led to the growth of laser welding. Since the second half of last year, handheld laser welding has gradually gained popularity and has become a bright spot in the laser welding market in the first half of this year.

Hand held laser welding machine catalogue-13

Many stainless steel products are produced and processed by argon arc welding machines and other ordinary welding machines. Although these can meet the needs of production, they will leave welding defects such as undercuts, incomplete welding, and welding during the welding process. Dense pores and cracks not only reduce the firmness of the joint, but also become a source of corrosion for crevice corrosion. In the welding process, not only must the welder's technology have a certain level, but also the welding skills and the cost of the flux are too large, which will increase the cost of production. Moreover, the working steps of processing must be carried out after welding, and the time efficiency is very slow. Because of these defects, the laser welding machine was born!


For metal laser welding, many factors considered in the past are positioning, fixtures, and efficiency, which limited the use of lasers. Even in some cases, argon arc welding is more efficient and more economical than laser welding. However, the handheld laser welding machine has the advantages of simple operation, beautiful welding seam, fast welding speed, and no consumables. It can perfectly replace traditional argon arc welding and electric welding for welding thin stainless steel plates, iron plates, galvanized plates and other metal materials. And other processes. The handheld laser welding machine can be widely used in the complicated and irregular welding processes of cabinets, kitchens and bathrooms, stair elevators, shelves, ovens, stainless steel doors and windows guardrails, power distribution boxes, stainless steel homes and other industries. As long as it is stainless steel, aluminum, copper, gold and silver jewelry, it can be welded, including many hardware devices, triangle valves, stainless steel sinks, tap water pipe fittings, stainless steel round pipe tee pipe elbows, floor drains, door handles, door locks, etc.


                                                                                               hand-held laser welding

According to reports, handheld laser welding is fast, 2-10 times faster than traditional welding, and one machine can save at least 2 welders a year. The welded seam after welding is smooth and beautiful, which reduces the follow-up grinding process and saves time and cost. The laser welding workpiece has no deformation, no welding scar, and the welding is firm. Laser welding requires less consumables and has a long life.

hand-held laser welding

                                                                                                hand-held laser welding

Although hand-held laser welding is very useful, it must be admitted that as far as the author knows, it has some problems. Rough statistics. At present, at least dozens of domestic equipment manufacturers provide such welding machines. The most popular one is to use continuous fiber lasers. The power levels are from 200 watts, 300 watts, 500 watts to 1500 watts, which are relatively high power. Therefore, a very important issue is the safety of use: firstly, welders must be strictly trained, and the laser cannot hit people or surrounding objects, otherwise it will cause serious burns and even cause fire; secondly, although the welding process is facing the workpiece, it will produce High-brightness reflective light, so the operator must be equipped with special protective light goggles. Solving these two problems, then handheld laser welding will be more recognized, the market demand will develop rapidly.


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Dapeng laser specializing in R&D, manufacturing laser marking, cutting and welding machines, we also provides Laser sources and spare parts to the laser machine manufacturers in China and surrounding countries.
 

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