It is impossible for the laser cutting machine to operate without failure forever. In many cases, failure will occur for some reason or by some person. At this time, you need not panic. When using the optical fiber laser cutting machine in daily life, please pay attention to the following contents to ensure safe use.
Optical fiber laser cutting machine has a very broad user market in the application field of precision cutting. On the one hand, optical fiber laser cutting has good performance in precision and speed; on the other hand, the cost advantage of optical fiber laser cutting itself makes market users prefer to choose such processing equipment. However, from the perspective of machine tool and hardware composition, the cutting method cannot avoid some problems in the use of equipment. This is called a good saddle, and the good use of the optical fiber laser cutting machine is more about the operator's understanding of the equipment and regular maintenance.
1. Factor analysis: The main factor affecting the damage of optical fiber laser cutting machine is the working material. When analyzing the influencing factors, it is necessary to understand the difference in the use of working materials of optical fiber laser cutting machine, which directly determines the damage threshold of working materials. In different cases, the difference is also greater.
<1. The quality of the working material itself. When there are many impurities, bubbles, internal stress and other defects in the working material, the damage threshold is low; When the surface treatment quality is low, there are many scratches and masking points, serious pollution and low damage threshold.
<2. Related to optical resonator. If the focus and self focusing 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, the lower the energy density.
What are the problems in using the laser cutting machine?
2. Cause analysis: The main reasons for the damage of the optical fiber laser cutting machine are as follows:
<1. Improper cooling or no cooling will lead to high temperature rise of working materials, which will lead to volume expansion, melting and vaporization of impurities, generate large local stress around impurities, and damage the matrix.
<2. Surface pollution and defects lead to a large increase in local light field intensity, which leads to excessive local absorption, formation of damage centers, and reduction of surface damage threshold.
<3. If the internal optical pump is too strong or the energy density in the cavity is too strong, the material will be damaged if it exceeds the material damage threshold.
3. Preventive measures: main measures to prevent damage of optical fiber laser cutting machine:
<1. Avoid the convergence center in or near the working material, try to use divergent beams or beams with wide and thick light intensity to pass through the working material, improve the quality of the working material, and try to reduce impurities, particles, bubbles, stripes, etc;
<2. Avoid working above the threshold; Improve surface polishing and coating quality; Pay attention to dust and other substances polluting working substances;
<3. Ensure the normal operation of cooling water, and add protection measures for water temperature and flow detection.