TopTech Laser Cutting Tips IV

TopTech Laser Cutting Tips IV

-- Laser Cutting Accuracy Influence Factor

To tell the quality of a fiber laser CNC cutting machine is to see its cutting accuracy good or not. And to make sure laser cutting accuracy, each part of fiber laser CNC cutting machine is very important. There are a lot of influence factors to make sure one fiber laser CNC cutting machine’s cutting quality. Now TopTech would like to share 4 usually influence factors on fiber laser cutting machines. Hope our information can help you choose and maintain your fiber laser CNC cutting machines.

TopTech Fiber II laser CNC cutting machine

I. The shape of laser beam:

The shape of laser beam is a cone, so the cutting shape is a taper. With this situation, the kerf of 0.4mm thickness plate is much thinner than 3mm thickness plate. So the shape of laser beam is the most key point of laser cutting accuracy. With this cone shape laser beam, the thicker plate is, the lower cutting accuracy will be and the bigger kerf will be.

II. Kerf width:

When the cone shape laser beam focus together, the kerf will be thinner. So the fiber laser cutting accuracy will get better, esp. the kerf width will be thinner and thinner. At this situation, the min laser spot can reach 0.01mm. This is one of the factor influence on fiber laser cutting accuracy, too.

III. Machine body precision:

If the accuracy of fiber CNC cutting machine’s working table is uneven or other reason also can make fiber laser cutting quality not good.

Considering about this point is a big point, which influence on fiber laser cutting accuracy, TopTech Fiber II used heat treatment machine body to make sure every plate on machine is even. And the crossbeam is from a whole iron crossbeam, without any soldering parts on crossbeam.

Besides, TopTech Fiber II equip with German advanced Eckelmann EXC880 control system. It has inside laser head up & down control system. And with in Eckelmann control system it has IBE professional nesting software.

All these software and hardware of Fiber II is aim to make the fiber laser cutting accuracy as good as possible.

IV. Cutting material:

To cut different materials the cutting accuracy is different even with the same one fiber laser machine same one operator. Even though the material is the same kind of material, if their elements are different, the cutting accuracy is different.

In a conclusion, according to above 4 major points of influence factors on fiber laser cutting accuracy hope TopTech tips can help you understand fiber laser cutting accuracy more. And the maintenance of fiber laser cutting machine also can influence on fiber laser cutting accuracy. So when operator using fiber laser cutting machines, they need adjust the laser beam, the movement  way on working table. If you have special requires on fiber laser cutting, please feel free to contact TopTech. TopTech are willing to share the best cutting solution with you all.

TopTech FAQ plasma cutting quality & main reason

TopTech FAQ

plasma cutting quality & main reason

I. The cutting surface is not vertical:

When we use the common plasma power source to cut, the best one will have a small angle of inclination about 3-5°. If the actual angle is bigger than 3-5°, that belongs to the vertical is not good, and the reason is as following:

A. Torch installation is not vertical to the plates: if cut a symmetric figure the angle is the same side, that is this problem.

B. Cutting direction is incorrect: the required side should be on the torch forward right side.

C. Torch height is not good: Negative cut angle (the bottom side is less) means the torch height is too low; Positive cut angle (the top side is less)

D. Torch spare parts need to change;

E. Cutting current is not good;

F. Cutting speed is not good.

II. The drows on the cutting part:

A. The spater on the top side: the spater on the both sides of the kerf

  Reason: torch is too low

  Solution: adjust higher arc voltage value to heighten the torch.

B. The drows on the bottom side:

--Cutting speed is too slow, and the shape of the drows are bolls and a lot.drows can be easy to move out.

Reason	Solution
Cutting current too large	Reduce cutting current and use the matched spare parts for the torch
Cutting speed too slow	Faster the cutting speed
Cutting height too low	Adjust higher arc voltage value to heighten the torch

--Cutting speed too fast:,the drows are fine rolls, and hard to move out.

Reason	Solution
Torch nozzle broken	Change nozzle
Cutting current too small	Increase cutting current and use the matched spare parts for the torch
Cutting speed too fast	Slower the cutting speed
Cutting height too high	Adjust lower arc voltage value to heighten the torch

Otherwise, the bottom drows also considered about air pressure and flow setting.

III. Didn't cut through:

A. The first piercing spot didn't cut through and lead the shape didn't cut through: the pierce delay time is too short, should be longer;

B. The first piercing spot had cutted through, but the following parts didn't cut through:

Reason	Solution
Torch nozzle broken	Change nozzle
Rusting, paint or other insulators on the cover of cutting materials	Move out the insulators
Cutting current too small	Increase cutting current and use the matched spare parts for the torch
Cutting speed too fast	Slower the cutting speed
Plates too thick for plasma power source	Change into suitable plasma power source

IV. The min hole cutting rules:

• Rules: The hole's inner diameter should be twice as the plate thickness;

• To cut small hole the inside will be a taper hole.