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Views: 10 Author: heyu Publish Time: 12-16-2020 Origin: fiber laser cutting machine
1. Laser cutting machine focusing points adjustment In the laser cutting process, it is very important to correctly adjust the focus point since the relative location between the focus of the laser beam and the workpiece surface has a great impact on the quality of the cutting.
If there is no dross on the back of the sheet plate and the slit is the best, that is the focal point location according to the sheet plate, we can attempt to cut by altering the focus point.
If the relative position of the cutting head and the surface of the plate changes, the cutting head and the sensor zero point also need to change accordingly, the program will finish the micro adjustment of the cutting height; if large adjustment is needed, the sensor and bracket need to change relative position to realize the adjustment of the focus point.
The operator must be very careful when doing this job, otherwise cutting head is likely to go down and collision, it will cause damage to spare parts.
2.Focal location and cutting result relationshipName and focus positionMaterial and cutting edge characteristics0 focal length: focal point on the work piece surfaceFor carbon steel
The top surface of the cutting result is smooth at the focal point on the workpiece surface, while the down surface is not so smooth.+ focal length: focal point inside the workpiece For aluminum material
Focus point at the middle, so the smooth surface range is broader, the cut area is wider, and the piercing time is longer than 0 focal length, the flow rate of gas is higher when cutting.
Focal length: at the work piece focal point belowFor stainless steel
When cutting the stainless steel with high-pressure nitrogen gas, blow slag and section safety, along with the workpiece thickness, the cut area increases.
3. The option of slashing velocity
The choice of cutting speed is dependent on the material and sheet width, the laser cutting output can be significantly influenced by various cutting speeds.
Choosing the right cutting speed will not only increase laser cutting work effectiveness, but also achieve improved cutting consistency. The results of various cutting rates for cutting efficiency are discussed here:
A)The speed of the laser cutting feed is too fast
1) It can create flying sparks, so that it can not be sliced.
2) It may cause certain regions to be cut off, but certain areas may not be cut off.
3) The entire cutting section may be too thick, but there is no molten slag.
4) It can allow the plate not to be easily cut off, diagonal streaks are present in the cutting area, and lower melt slag is created by the down surface. As displayed below:
B) The feed speed for laser cutting is too slow:
1) It can induce overly melting phenomenon of steel sheet, segment cutting is too hard.
2) Consequently, the slit will become larger, so it can allow the whole area to melt on a smaller rounded section or sharp corner part, so that the consumer will not get the optimal outcome of cutting.
3) The productivity of cutting is poor, so it will influence the potential of production.
4) Proper cutting feed velocity choice: we can judge the feed velocity from the cutting sparks: normally the cutting spark diffuses from the top-down, when the spark slant, the feed velocity is too fast; if the spark does not diffuse and much less, holding together then it proves that the feed velocity is too late.
Please feel free to email us at any time if you have any concerns about laser cutting machines.
