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What materials can a handheld laser welder weld？
Time:2021-11-20
Views:1029
With the advantages of high welding speed, high precision, high efficiency and beautiful weld, handheld laser welding machine has become a new industrial technology in industrial welding processing. Handheld laser welding machine is widely used, but many people do not know what materials can be welded by laser welding machine.
Howweld team produced cheaper handheld laser welder to meet small target budget to purchase a laser welder.To improve welding speed,can weld effect on metal surface.
Howweld team produced cheaper handheld laser welder to meet small target budget to purchase a laser welder.To improve welding speed,can weld effect on metal surface.
1. Die steel
The hand-held laser welding machine can be applied to the welding of various types of die steel, and the welding effect is good.
2. Carbon steel
Carbon steel is welded by hand-held laser welding machine, and the effect is good. The welding quality depends on the impurity content. In order to obtain good welding quality, preheating is required when the carbon content exceeds 0.25%. When steels with different carbon contents are welded to each other, the welding torch can be slightly biased to the side of low-carbon materials to ensure the quality of joints.
Because the heating speed and cooling speed of laser welding machine are very fast, when welding carbon steel. With the increase of carbon content, the welding crack and notch sensitivity will also increase. Medium and high carbon steels and ordinary alloy steels can be well welded by laser, but preheating and post weld treatment are required to eliminate stress and avoid cracks.
3. Alloy aluminum
For laser welding of low alloy high strength steel, as long as the selected welding parameters are appropriate, the joint with the mechanical properties equivalent to the base metal can be obtained.
4. Stainless steel
In general, stainless steel welding is easier to obtain high-quality joints than conventional welding. Due to the high welding speed and small heat affected zone of laser welding, the overheating phenomenon and the adverse effect of large linear expansion coefficient during stainless steel welding are reduced, and the weld has no defects such as pores and inclusions.
Compared with carbon steel, stainless steel is easier to obtain deep penetration narrow weld because of its low thermal conductivity, high energy absorption and melting efficiency. The joints with good appearance, smooth and beautiful weld can be obtained by welding thin plates with low-power laser.
5. Copper and copper alloys
Welding copper and copper alloy is easy to cause the problem of incomplete fusion and incomplete penetration, so energy concentrated and high-power heat source should be adopted and preheating measures should be taken;
When the thickness of the workpiece is thin or the structural stiffness is small and there are no deformation prevention measures, it is easy to produce large deformation after welding, and when the welded joint is subject to large rigid constraints, it is easy to produce welding stress; It is also easy to produce thermal cracks when welding copper and copper alloys;
Porosity is a common defect in copper and copper alloy welding.
6. Aluminum and aluminum alloys
Aluminum and aluminum alloys are highly reflective materials. When welding aluminum and its alloys, with the increase of temperature, the solubility of hydrogen in aluminum increases sharply, and the dissolved hydrogen becomes the defect source of the weld. There are many pores in the weld. During deep penetration welding, there may be cavities at the root and poor weld bead formation.
Laser welding can weld more than these materials. Laser welding can be carried out between a variety of dissimilar metals.
The research shows that laser welding can be carried out between various dissimilar metals such as copper nickel, nickel titanium, copper titanium, titanium molybdenum, brass copper and low carbon steel copper under certain conditions.
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