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Views: 9 Author: heyu Publish Time: 05-27-2020 Origin: Leapion fiber laser cutting machine
It is impossible for the laser cutting machine to run without failure. In many cases, everyone will cause the failure due to some reasons. At this time, you do not need to panic. When we use the fiber laser cutting machine in our daily life, we can use it safely by paying more attention to the following content.
Fiber laser cutting machine has a very wide user market in the application of precision cutting. On the one hand, fiber laser cutting has good performance in precision and speed, on the other hand, the cost advantage of fiber laser cutting itself makes market users prefer to choose such processing equipment. However, from the point of view of machine tool and hardware composition, the cutting mode can not avoid some problems in the use of the equipment. It is the so-called good horse with good saddle, and the good use of fiber laser cutting machine is more about the understanding and regular maintenance of the operator for the equipment.
1. Factor analysis: the main factors that affect the damage of fiber laser cutting machine are mainly working materials. When analyzing the influencing factors, we should know the difference in the use of working materials of fiber laser cutting machine, which will directly determine the damage threshold of working materials. In different cases, the difference is also the ratio Larger.
< 1. The quality of the working substance itself, when there are many defects such as impurity particles, bubbles and internal stress in the working substance, the damage threshold is low; when the surface processing quality is low, there are many scratches and shielding points, the pollution is serious and the damage threshold is low.
< 2. It is related to the optical resonator. If the focus and self focus are formed in the working material, the energy density of the local area is significantly increased, the front light effect is obvious, and the working material is easy to be destroyed.
The narrower the pulse width is, the lower the energy density is. 2. Cause analysis: the main causes of damage of fiber laser cutting machine are as follows:
< 1. Improper cooling or no cooling will lead to high temperature rise in the working substance, which will cause volume expansion, melting and vaporization of impurities, generate large local stress around impurities and damage the matrix.
< 2. The surface pollution and defects cause the local light field intensity to increase greatly, cause the local absorption to be too high, form the damage center, and reduce the surface damage threshold.
< 3. When the internal optical pump is too strong or the energy density in the cavity is too strong, it will cause material damage when it exceeds the material damage threshold.
3. Preventive measures: main measures to prevent damage of fiber laser cutting machine:
< 1. Prevent the convergence center in or near the working substance, try to use divergent beam or beam with wide and thick light intensity to pass through the working substance, improve the quality of working substance, and try to reduce impurity particles, bubbles, stripes, etc;
< 2. Avoid working above the threshold value; improve the surface polishing and coating quality; pay attention to dust and other substances polluting the working substances;
< 3. Ensure the normal operation of cooling water, increase the water temperature and flow detection protection measures.
