How Thick Can The Laser Welding Machine Weld

The welding thickness of laser welding is different from the power of laser welding equipment and the welding material of equipment. Generally, the welding depth of laser welding function can reach 7mm, and the firmness can be achieved according to your needs.

The industry application of laser welding machine is as follows: Sanitary industry: water pipe joints, tees, valves, shower welding. Glasses industry: Stainless steel, titanium alloy and other material buckles, precision welded frames, etc. Hardware industry: Welding of impellers, kettles, handles and other complex stampings and castings. Automobile industry: engine cylinder head gasket, hydraulic tappet seal welding, spark plug welding, filter welding, etc. Medical industry: stainless steel seals, medical appliances, medical equipment, structural parts welding. Electronics industry: solid state relay sealing welding, connector connector welding, MP3 and other metal shells and structural parts. Welding of motor shells and wires, optical fiber connectors, etc. Household hardware: kitchen utensils, stainless steel door handles, electronic components, sensors, clocks, precision machinery, communications, handicrafts and other industries, automotive hydraulic tappets and other high-strength products welding products.

Almost all of these industries use laser welding machines. The advantages of laser welding machines are energy concentration, no pollution, small solder joints, a wide range of weldable materials, high applicability, high efficiency and high-speed welding. At the same time, the following requirements also apply to laser welding. 1. Products that require welding seams need to be welded by laser welding. Not only the welding is small, but also no welding is required. 2 Products with high automation In this case, the laser welding equipment can be programmed manually and the path is automatic. 3. Welding of products at room temperature or under special conditions can be stopped at room temperature or under special conditions, and the installation of laser welding equipment is simple. For example, if the laser passes through an electromagnetic field, the beam does not move; the laser can be welded in the vacuum of air and in some kind of gas environment, and can be welded or transparent to the beam through glass. 4 Some inaccessible parts require laser welding equipment, which can weld inaccessible parts, realize non-contact long-distance welding, and have high sensitivity. Especially in recent years, YAG laser processing technology adopts optical fiber transmission technology, which makes laser welding technology more popular and applied

Laser welding uses high-energy laser pulses to locally heat materials in small areas. The energy of the laser radiation is transmitted to the interior of the material through heat, causing the material to melt to form a specific molten pool. It is a new type of welding method, mainly used for welding precision parts of thin-walled materials, and can realize spot welding, butt welding, overlapping, sealing welding, etc., with small weld width, small heat-affected zone, small deformation, fast welding speed, and flat weld seam , The welding quality is high, the precision can be precisely controlled, the positioning accuracy is high, and the automation is easy. Laser welding machines are often called laser welding machines, energy negative feedback laser welding machines, laser cold welding machines, laser argon welding machines, and laser welding equipment. With the continuous development of science and technology, traditional welding methods cannot meet the special requirements of materials in many industrial technologies. The advantages of laser welding machines are low bonding strength and wide heat-affected zone, especially in many industries. welding method.

Three major defects of laser welding

Because laser technology has the characteristics of low welding heat input, little influence on the welding heated area and not easy to deform, it has received special attention in the field of aluminum alloy welding. But on the other hand, due to its own defects, there are three major welding difficulties in laser welding. So how to solve it cleverly?

Difficulties in welding 1. The laser absorption rate of the material is low

a) Take appropriate surface pretreatment process. For example, pretreatment measures such as sanding, surface chemical etching, and surface plating. Increase the absorption rate of the material to the laser light.

b) Reduce the spot size and increase the laser power density.

c) Change the welding structure so that the laser beam is reflected multiple times in the gap. Easy to weld aluminum alloy

Difficulties in welding 2. Pores and thermal cracks are prone to occur

1) After many welding tests and researches, it is found that adjusting the laser power waveform during the welding process can reduce the unstable collapse of pores, changing the angle of laser beam irradiation and applying a magnetic field during welding can reduce the pores generated during welding.

2) When using YAG laser, you can adjust the pulse waveform and control the heat input to reduce crystal cracks.

Difficulties in welding 3. During the welding process, the mechanical properties of the welded joint decrease

The mechanical properties of welded joints are caused by the instability of pores generated by aluminum alloy welding. Aluminum alloy mainly includes three elements: Zn, Mg and Lv. When welding. Aluminum has a higher boiling point than the other two elements. Therefore, some low-boiling point alloy elements can be added when welding aluminum alloy elements, which is beneficial to the formation of small holes and the firmness of welding.

The high efficiency of aluminum alloy laser welding makes people look forward to its development prospects. Therefore, some researchers have continuously developed new technologies such as laser-arc coincidence technology and bifocal technology to improve the stability of the welding process and improve the quality of the weld.

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