In order to ensure the normal operation of laser cutting equipment and good processing quality, so before the work of the equipment to do a good job of related testing.

One, check lens cleanliness

ten thousand watt cutting head lens is very important for wanwa laser cutting machine. Its cleanliness directly affects the processing performance and quality of laser cutting machine.If the lens is dirty, it will not only affect the cutting effect, but also further cause the internal cutting head and laser output head burn.The inspection before cutting can avoid serious loss.

A red light test is usually used to check the cleanliness of the lens. A single-layer nozzle with a diameter of 2.0mm or more and white paper should be prepared.The steps are as follows:

1. The Max laser ten thousand watt laser has red light indication when it is started;

2, the white paper away from the cutting head nozzle about 300mm above the red light;

3. If there are black spots or irregular black objects with obvious outline in red light, the lens will be dirty and need to be cleaned before cutting and debugging

Detailed description of wanwa laser cutting machine before work detection

Two, coaxial debugging

The coaxiality of the nozzle exit hole and the laser beam is one of the important factors affecting the cutting quality. If the nozzle is not coaxial with the laser, it will only affect the effect of the cutting surface. In serious cases, the laser will hit the nozzle, causing the heat and burning of the nozzle.

Coaxial debugging requires a nozzle with a diameter of 1.2mm and scotch tape.The steps are as follows:

1. Adjust the coaxial axis at focal point 0 so that the laser is in the center of the nozzle;

2. Spot the light at the focal point ±6mm;

3. If the focal point 0 and ±6mm are in the center of the nozzle, it is normal.Otherwise replace the cutting head or laser offset

Detailed description of wanwa laser cutting machine before work detection

Three, check the spot distribution

The shape of the spot directly feedback the transverse distribution of laser energy.Spot roundness represents the uniformity of energy distribution in different directions of the spot, and the spot with high roundness has the same energy distribution in all directions. When cutting, it can ensure the consistency of cutting surface finish and cutting speed in all directions, so as to ensure the quality of cutting products.

To check the spot distribution, prepare single-layer nozzles with diameters greater than 2.0mm and black spot paper.The steps are as follows:

1. The black spot paper shall be about 300mm away from the cutting head nozzle and light shall be generated;

2. If there are black spots in the spot with obvious outline, the lens will be dirty;

3. If the spot is not round and the center is shifted, the laser spot distribution is poor.

Detailed description of wanwa laser cutting machine before work detection

Iv. Actual zero focus detection

The focal point of laser cutting is a very important data in the cutting process parameters. Different materials and thickness of cutting need to be adjusted into different focal points.Before cutting, measure the actual zero focus to refer to chuangxin cutting process parameters, faster to determine the most appropriate cutting focus.If the actual zero focus shift is too large, the cutting focus range will not be enough to cut the thick plate.

Detection method:

1. Fix the cutting height at 0.5mm, and mark the 1mm stainless steel with each change of 0.5mm focus position;

2. Compare the line widths at different focal points, and the focal point corresponding to the minimum line width is the actual zero focal point;

3. The actual zero focus shall be within the range of ±1. If the zero focus deviation is too large, the cutting head shall be adjusted or replaced.

Detailed description of wanwa laser cutting machine before work detection

Test the heating range of nozzle

Chuangxin wanwa laser cutting carbon steel nozzle selection

Detailed description of wanwa laser cutting machine before work detection

The biggest problem of cutting thick carbon steel plate by wanw laser is the hot nozzle, so before cutting, it is necessary to test the nozzle heating when the nozzle of different size is full power at different focal points.

Test premise:

1, adjust the coaxial, so that the spot in the nozzle center output;

2. Cut and install cooling air of nozzle;

Test method:

1. Place an iron bucket (with appropriate amount of water) under the light of the cutting head;

2. First blow the auxiliary gas (gas type and air pressure shall be cut in accordance with the gas required by the actual cutting), then discharge the light at full power for 30 seconds, and measure the temperature change of the nozzle.Change the focus position and continue testing as described above;

3. Change the nozzle size and continue the test according to the above methods;

4. Summarize the heating conditions of different nozzles, and provide references for subsequent cutting process debugging.If the nozzle is not a very narrow heating range, then check the cutting head, nozzle, lens and laser problems, after troubleshooting problems, can be the next step of cutting plate technology debugging.