The Ultimate Guide to Laser Cutting Process

Laser Cutting Process

Laser cutting process that uses a laser beam to cut materials with high precision. The laser beam is directed onto the material being cut, which causes the material to melt, burn, vaporize, or be blown away by a jet of gas, depending on the type of laser and the material being cut.

The laser beam is typically generated by a laser resonator and focused by a series of mirrors and lenses before being directed onto the material. The focused laser beam has a high power density, which allows it to melt or vaporize the material at the point of contact, creating a narrow cut with high precision.

Laser cutting can be used to cut a wide range of materials, including metals, plastics, wood, paper, and fabrics. It is commonly used in manufacturing for cutting and shaping parts and components for various applications, such as aerospace, automotive, electronics, and medical devices.

Laser cutting is a versatile and efficient process that offers several benefits over traditional cutting methods, such as high accuracy, speed, and repeatability. It also produces a clean and precise cut without the need for secondary processing, such as sanding or polishing.

Carbon Steel

Problem	Reason	Solution
	1. Atmospheric pressure	1. Reduce air pressure
	2. Low focus 3. Nozzle is too large	2. Improve focus 3. Use a small nozzle
Layered at the bottom, wrinkles appear
	1. Excessive air pressure 2. Cutting speed is too slow	1. Reduce air pressure 2. Speed up the cutting
Small streaks appear on the section
	1. Low air pressure 2. Focus is too low 3. Small nozzle 4. Fast cutting speed	1. Increase air pressure 2. Improve focus 3. Change the large nozzle 4. Reduce cutting speed
There are welding slag and welding spots on the bottom
	1. Too much energy 2. Excessive air pressure 3. Cutting speed is too slow	1. Reduce peak power 2. Reduce air pressure 3. Speed up the cutting
Burnt at the bottom
	1. Polarized light 2. Protect the lens from dirty 3. Cutting speed is too fast 4. The nozzle is not round or the nozzle is blocked	1. The center of dimming 2. Clean the protective lens or replace the protective lens 3. Reduce the cutting speed 4. Replaced nozzle
Bad cut to the side
	1. Cutting speed is too slow	1. Speed up the cutting speed
Small fine lines on the section with molten iron at the bottom
	1. Cutting speed is too fast 2. The air pressure is too low 3. Wrong focus	1. Reduce the cutting speed 2. Increase the air pressure 3. Adjust focus
Hot metal on the surface
	1. Cutting speed is too fast	1. Reduce the cutting speed
Sectional Twill
	1. The focus is too high 2. Excessive air pressure	1. Reduce focus 2. Reduce air pressure
There are fine stripes on the upper section of the cut
	1. Turning heat is too high	1. Round the sharp corners 2. Use cooling points 3. Use power curve
Horn burn

Stainless Steel Craft

Problem	Reason	Solution
	1. The focus is too high 2. Air pressure is too low	1. Reduce focus
Striped hard slag hanging on the bottom
	1. High focus 2. The cutting nozzle height is too low 3. Excessive air pressure	1. Reduce focus 2. Increase the nozzle height 3. Reduce air pressure
The lower part of the section is whitish
	1. The focus is too high	1. Reduce focus
Yellowing at the bottom of the section
	1. Too fast 2. Low focus	3. Reduce the cutting speed 4. Improve focus
Small drop-like burrs on the bottom
	1. High focus	1. Reduce focus
Corner dregs
	1. Protect the lens from dirty	1. Replace the protective lens
The slit becomes wider
	1. The focus is too low 2. Cutting speed is too fast 3. The knife is not set	1. Improve focus 2. Reduce the cutting speed 3. Use a slow starting point for starting the knife or use a round hole at the starting point of the lead to introduce
Rough section, blue light appears in the seam during cutting
	1. Polarized light 2. Protect the lens from dirty 3. The coaxial is not good 4. The nozzle is not round	1. Check the center of the light 2. Clean or replace the protective lens 3. Check the coaxial 4. Replaced nozzle
One side or both sides are not cut well, the other side is cut well
	1. The gas is impure 2. Air or oxygen in the trachea	1. Nitrogen purity requirement 99.99% 2. Check the gas path 3. Check delay
Yellow section

Carbon Steel Perforation Process

Problem	Reason	Solution
	1. Perforation frequency is too high 2. Punching power is too large 3. Too much air pressure	1. Reduce frequency by 10% each time 2. Reduce the duty cycle, 1%-2% each time 3. Reduce air pressure, 0.1bar each time
Light blasthole
	1. Perforation frequency is too high 2. Punching power is too large 3. Too much air pressure	1. Reduce frequency by 10% each time 2. Reduce the duty cycle, 1%-2% each time 3. Reduce air pressure, 0.1bar each time
Blast hole during piercing
	1. Insufficient punch time 2. Punching power is low	1. Increase the punching time, every time 0.5sec 2. Increasethepunchingpower, 5% each time 3. Increase the duty cycle, every time
End of piercing and start cutting blasthole

1. Common blasting at the beginning is divided into three stages. The order of piercing is three-level, two-level, and one-level post-cutting. For example, in the first segment of blasting at the beginning of piercing, we need to adjust the three-level piercing parameters.

As shown in the picture above, the hole is blasted at the beginning of the three-level perforation. First choose Hongshan thick plate, the processing method is as follows.

1. Check whether the perforation air pressure exceeds the standard, generally the perforation air pressure is between 0.04mpa-0.15mpa

2. Check the nozzle height, the blasting height is generally between 12mm-20mm.

3. Lengthening the progression time and perforation residence time is the most direct way to slow down the perforation speed

4. Reducing the piercing frequency or piercing duty cycle can deal with blasting, the frequency is average 50HZ-1000HZ, duty cycle 30%-70%.

5. Stop blowing air must be checked to help blow off the slag generated during perforation.

6. Rust or other labels attached to the plate will also affect the quality of the perforation.

As shown in the figure below, when the second and third poles are perforated, the blasting is the same. The specific link is blasted, so modify that one.

As shown in the picture on the left, the blasting occurs when the piercing reaches the second stage. It is necessary to check several important factors affecting perforation in the second stage.

Note: Generally lengthening the piercing time and gradual time, reducing the duty cycle and frequency is a direct way to slow down blasting lead.

Lead-in line: the line connecting the punching position and the contour of the workpiece, called lead-in line or lead-in line.