Laser processing technology is a processing technology that uses the characteristics of the interaction between laser beams and substances to perform cutting, welding, surface treatment, drilling and micro-machining of materials (including metals and non-metals). Since laser processing is non-contact processing, it causes little damage to the workpiece, and has the advantages of high efficiency, no pollution, high precision, and small heat affected zone. Therefore, it is very suitable for the manufacturing of home appliances that require lightweight and beautiful appearance. For example, it is used in the cutting and welding of alloy shells for washing machines, refrigerators, air conditioners, etc., and the drilling, cutting and marking of plastic accessories.

Laser marking: Traditionally, the parameter labels for home appliances are usually made of PET, PVC, coated paper and other materials. The labels need to be made first and then pasted manually, which is inefficient and the labels are easy to be torn, misaligned, bubbled, etc., and It requires a large amount of label paper and other consumables, which consumes a lot of money and is not environmentally friendly. It also requires increased manpower and operating time, and the production cost is high. The entire original plastic label is replaced with laser marking, and the processing method is changed from traditional manual labeling to automatic laser marking, which can improve production efficiency, save manpower and a large amount of consumables, and is also more environmentally friendly and efficient.

Home appliance giant Midea Group began to use Laisai's laser marking technology to complete the automation transformation of its air-conditioning production line a few years ago. Subsequently, first-class home appliance manufacturers such as Haier, TCL, and AUX have successively cooperated with laser companies to actively expand laser applications in the field of white home appliances, bringing new label nameplate laser processing solutions to their air conditioners, refrigerators, washing machines, remote controls and other home appliances plan.

Laser cutting: Laser cutting is a non-contact, high-speed, high-precision cutting method that focuses energy into a tiny space and uses high-density energy. Compared with the traditional shearing process, it has the characteristics of higher cutting accuracy, lower roughness, higher material utilization and production efficiency. Especially in the field of fine cutting, laser cutting has advantages that traditional cutting cannot match. .

Laser cutting is mainly used in the electrical appliance industry to cut thin steel plate parts in exterior sheet metal parts and in the installation of complete sets of electrical components. In home appliances and electrical products, parts processed from sheet metal account for almost more than 30% of all product parts. Traditional processes such as blanking, corner cutting, hole opening and trimming are relatively backward, which directly affects product quality and production costs. Because the laser cutting machine uses "non-contact processing", it does not require mold opening and saves costs. The processing graphics are made by software and have various patterns, such as cutting metal accessories and metal covers for air conditioners; cutting and drilling the bottom or back cooling stencil of refrigerators; cutting blades for juicers, etc. This laser cutting technology can effectively improve product quality, reduce production costs, and reduce labor costs. Labor intensity brings better production benefits to manufacturers.

Laser welding: In the home appliance industry, argon arc welding or fiber welding is traditionally used. However, the processing surface of the traditional welding process is poor, which brings great processing difficulty to the next process. The appearance of laser welding is that relatively smooth and flat, has small thermal deformation, and saves material. After welding, simple grinding or polishing can complete the appearance treatment.

As early as 5 years ago, Haier's crystal drum washing machine using laser seamless welding technology was launched for the first time. Haier became the first domestic washing machine brand to come into contact with and start to promote this technology. Compared with the 8mm gap created by riveting buckle seams in traditional washing machines, the precision of the inner barrel welding seam of Haier crystal drum washing machine has been improved by 14.5 times, shrinking to 0.55mm, which is only 10 hairs thick. It is worth mentioning that with the help of laser seamless welding technology, the strength of the inner cylinder of the crystal has also been greatly improved. In the tensile test, the crystal inner cylinder can withstand 3.5 times the tensile force of the ordinary inner cylinder, and the connection is stronger. It can support the ultra-high speed of the FPA direct-drive variable frequency motor of 1,600 rpm, greatly improving the clothes cleaning ratio. Today, five years later, more than 95% of Haier's front-loading washing machines have laser-welded seamless inner cylinders. Some insiders believe that Haier has actually completed a historic breakthrough in inner cylinder welding technology in the washing machine industry.

"Intelligent" and "high-end" have become key words on the road to upgrading the home appliance industry. In fact, this is not only a new development goal for the home appliance industry, but also the path and direction that the entire Chinese economy and Chinese manufacturing are exploring. At present, the usage rate of laser technology in home appliances is not high enough, but this process has gradually been recognized and recognized by manufacturers. It is believed that in the future, laser technology will be more and more widely used in the home appliance industry, and its development potential and market opportunities is immeasurable.

Of course, the applications of laser technology in the home appliance industry go far beyond the above. Many leading companies in laser technology, including Han’s Laser, TRUMPF, Han’s Yueming, Laisai Laser Equipment etc., have set foot in the field of home appliances and have achieved remarkable results.

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