High-precision, high-environmental protection laser welding technology for outdoor cabinets

Our driver’s cabinets all adopt laser welding technology. Laser welding technology belongs to fusion welding. It uses laser beam as energy to make it impact on the joint of the weldment to achieve the purpose of welding. It consists of an optical oscillator and a medium placed between the mirrors at both ends of the oscillator cavity. First of all, laser welding can reduce the amount of heat input to the minimum, the metallographic change range of the heat-affected zone is small, and the deformation caused by heat conduction is also the lowest. No electrodes are required, and there is no concern of electrode contamination or damage. And because it does not belong to the contact welding process, the wear and deformation of the machine tool can be minimized. The laser beam is easy to focus, align and be guided by optical instruments. It can be placed at an appropriate distance from the workpiece, and can be redirected between the tools or obstacles around the workpiece. Other welding methods cannot be used due to the above-mentioned space constraints. . Second, the workpiece can be placed in a closed space (either evacuated or with a controlled internal atmosphere). The laser beam can be focused on a small area, small and closely spaced components can be welded, a wide range of weldable materials can be welded, and various heterogeneous materials can be joined to each other. In addition, it is easy to automate high-speed welding, and it can also be controlled by digital or computer. When welding thin materials or thin wires, there is no problem of melting back like arc welding.

Advantages of laser welding:

(1) The amount of heat input can be reduced to the minimum, the metallographic change range of the heat-affected zone is small, and the deformation caused by heat conduction is also the lowest.

(2) The welding process parameters of 32mm plate thickness single-pass welding have passed the verification, which can reduce the time required for thick plate welding and even save the use of filler metal.

(3) There is no need to use electrodes, and there is no concern about electrode contamination or damage. And because it does not belong to the contact welding process, the wear and deformation of the machine tool can be minimized.

(4) The laser beam is easy to focus, align and be guided by optical instruments, and can be placed at an appropriate distance from the workpiece, and can be redirected between the machines or obstacles around the workpiece. Other welding methods are limited by the above space and unable to perform.

(5) The workpiece can be placed in a closed space (by vacuum or the internal gas environment is under control).

(6) The laser beam can be focused on a small area, and small and closely spaced components can be welded,

(7) The range of weldable materials is wide, and various heterogeneous materials can also be joined to each other.

(8) It is easy to perform high-speed welding with automation, and it can also be controlled by digital or computer.

(9) When welding thin or thin-diameter wires, there is no trouble of melting back like arc welding.

(10) It is not affected by the magnetic field (arc welding and electron beam welding are easy), and can accurately align the weldment.

(11) Two metals with different physical properties (such as different resistance) can be welded

(12) No vacuum or X-ray protection is required.

(13) If perforated welding is used, the depth-to-width ratio of the weld bead can reach 10:1

(14) The device can be switched to transmit the laser beam to multiple workstations.