Views: 0 Author: Site Editor Publish Time: 2021-08-15 Origin: Site
Laser welding machine for mold and metal workpiece wear, scratches, pinholes, cracks, defects, deformation, hardness reduction, sand holes, and other defects for deposition, sealing, repair equal function. After using a laser spot welding machine to repair the substrate without deformation, annealing, biting edge, and residual stress, does not change its metal organization state, high repair precision, coating thickness from a few microns to a few millimeters, just grinding and polishing. How to maintain laser welding machines? Here are some answers.
Here is the content list:
Laser maintenance and adjustment
Adjustment of the laser resonator
Ensure that the laser path is in the normal working state
Cooling system maintenance
First, in order to ensure that the laser has been in a normal working state, after two weeks of continuous work or stop using for a period of time, the laser welding machine before starting the first to YAG rod, dielectric diaphragm, and lens protection glass and other components in the light path should be checked.
Make sure that the optical components have no dust pollution, mildew, and other abnormal phenomena.
If there are these phenomena should be dealt with in time to ensure that the optical components will not be damaged under strong laser irradiation.
Second, the purity of the cooling water of the laser welding machine is the key to ensure the laser output efficiency and the life of the laser condenser cavity assembly. The conductivity of the circulating water should be checked once a week in use to ensure its conductivity of 30.5mW ·cm. The deionized water in the inner circulation must be replaced once a month, and the conductivity of the newly injected pure water must be 32mW ·cm.
Pay attention to observe the color change of the ion exchange column of the laser welding machine at any time. Once the color of the resin in the ion exchange column of the laser welding machine turns dark brown or even black, the resin should be replaced immediately.
Third, the laser welding machine equipment operator can often use black paper to check the laser output spot, once found that the spot is uneven or an energy decline phenomenon, should be a timely adjustment of the resonator of the laser, to ensure the quality of the laser output beam.
First, check the reference light source.
Second, adjust the position of the camera.
Third, check the installation position of the YAG rod.
Fourth, complete the position of the mirror.
Fifth, the location of the gate.
In order to ensure that the laser path has been in the normal working state. After the laser welding machine has been working three times or the parts have been in use for a period of time, the components in the path of the optical machine block, medium piece, and lens protection glass should be checked at the beginning of the machine to make sure that the optical components have no ash total pollution, line change, and other abnormal phenomena. If there are these phenomena should be dealt with in time. If the equipment is used in a clean environment, the inspection of the laser welding machine can be extended to a month or even longer.
The main contents of maintenance include checking the quality of the cooling water of the laser spot welder, cleaning the water tank and pipes, and checking whether the operation of the protection circuit is normal. In the case of frequent use, the water quality must be checked once a week to ensure the quality of the cooling medium at any time. The method of inspection is to place the multimeter in the 2MW resistance file, and insert the metal exposed part of the two meters pen end into the cooling water in parallel with a 1cm interval. At this time, the resistance reading should be at least more than 250KW. If the reading is below this value, the cooling water should be replaced immediately. The cooling system of the laser spot welding machine is specially designed for the characteristics of laser equipment. The protection measures such as overtemperature sound alarm, overtemperature interlocking, flow switch interlocking, liquid level protection interlocking are designed. The above protection circuit should be checked frequently during the use of a laser spot welder to ensure its normal and effective function.
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