Common problems of fiber laser cutting machine-part two
Common problems of fiber laser cutting machine-part 2.
Types and effects of gases used:
Air: ①: Used as a cutting gas ②: Use ③ as a cooling cutting head: Use as a light path for internal dust removal (protect lenses to prolong the use of lenses)
General oxygen: As a carbon steel cutting gas (combustion-supporting) purity 99.5%
Pure nitrogen: As a stainless steel cutting gas (cooling) purity 99.9% (cut carbon steel speed of 3/4)
High Purity Nitrogen: the use of gas as a laser 99.999%
High purity Helium: the use of gas as a laser 99.999%
High-purity carbon dioxide: the use of gas as a laser purity 99.999%
Size of the cutting hole: (distinguish between material and thickness)
① cutting 8㎜ within the carbon steel plate, the aperture can not be less than the thickness of the plate, cutting 10㎜ within the plate, the aperture can not be less than 1.2 times times the thickness of the plate.
② cutting 4㎜ within the stainless steel plate, the aperture can not be less than the thickness of the plate, cutting 4㎜ above the plate, the aperture can not be less than 1.2 times times the thickness of the plate.
③ if the aperture exceeds the above range, the pulse cutting or marking process is used.
Pulse Cutting: (relative to continuous wave cutting)
The ① velocity is a continuous wave of $number.
The ② power is larger than the continuous wave.
The ③ pressure is about twice times larger than the continuous wave. Perforation using continuous wave
Common problems of fiber laser cutting machine-part 2
Perforation Mode: (applicable to cut carbon steel)
① normal perforation: Suitable for use when cutting 5㎜ carbon steel below.
② progressive perforation: used when cutting 6-8㎜ carbon steel. (must revise the corresponding parameter P990012)
③ powerful perforation: used when cutting 10-12㎜ carbon steel (burst hole mode).
Perforation height is not less than the height of cutting, perforation pressure is not less than 1.0.
Parameters of the introduction line (suitable for cutting stainless steel)
① cutting 1-3㎜ stainless steel using a single (cut small round or deceleration) way.
② cutting 3-6㎜ stainless steel with two (cut small round or deceleration) way.
The pressure of the ③ is 1.5 times times larger than that of the cut.
The cause of “burst hole”:
① perforation time is not enough
② pressure is too big
③ the focus is wrong.
④ perforation height is too low
⑤ Pulse Frequency inconsistency
⑥ Power is too large
Following with our new machine model:
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