Fiber laser cuing machines are used to cut dierent kinds of material, and the gas using must including it the cuing process. So how to choose the right gas and pressure for ber laser cuer, this will be the most comprehensive guide on the subject of how to select the right gas and pressure.
Depending on the dierent cuing plate material, the selection of dierent cuing gases and pressures has a great impact on the quality of the ber laser cuing machine.
The ber laser cuing cuer cuts colored plates such as stainless steel or aluminum plates, and generally uses nitrogen as an auxiliary gas for cooling and protection. Carbon steel cuing uses oxygen to cool and accelerate combustion to accelerate cuing. The cuing gas helps to dissipate heat and support combustion, and blow away the molten stains, so as to obtain a cuing section with beer quality.
The inuence of gas and pressure on cuing quality
- When the gas pressure not enough:
Quality eects: During cuing, the melting stains will occur, the cuing speed cannot achieve, that aect the production eiciency.
- When the gas pressure too high:
Quality effects: The cutting surface is rough and the slit is wider, at the same time, the cutting section will be partially melted and a cannot have a good cutting section.
The inuence of gas pressure on piercing
a) Oxygen:
Oxygen can be used as cuing gas, as a cooling cuing head, and as dust removal inside the optical path (to protect the lens and delay the lens use time). The oxygen reaction can greatly improve the cuing eiciency, and the oxide lm produced will also increase the spectral absorption factor of the reective material beam.
Mainly suitable using materials: Rolled steel, rolled steel for welding structure, carbon steel for mechanical structure, high tension plate, tool plate, stainless steel, electroplated steel plate, copper, copper alloy, etc.
b) Nitrogen:
Nitrogen can prevent oxide-free cuing of the oxide lm. Pure nitrogen is used as the gas (cooling property) for cuing stainless steel with a purity of 99.9%, highpurity nitrogen is used as the gas used for the laser, with a purity of 99.999%.
Mainly suitable usingmaterials: Stainless steel, electroplated steel plate, brass, aluminum, aluminum alloy, etc.
c) Air:
Air compressor can directly to provide it, that is relatively cheaper than other gases. Mainly suitable using materials: Aluminum, aluminum alloy, stainless copper, brass, electroplated steel plate, non-metal, etc.
d) Argon:
Used to prevent oxidation and nitridation, and also can use in welding.
Carbon dioxide: high-purity carbon dioxide: used as laser gas, purity: 99.999%.
Mainly suitable using materials: Titanium, titanium alloy, etc.
Selection of cuing gas pressure for ber laser cuing machine
When laser drilling, generally a higher gas pressure is used for punching thin plate parts, and a specic punching method is used for punching thick plate parts to eliminate the disadvantageous factors of low air pressure on the protection of the lens. When the laser cuing machine cuts ordinary carbon steel, the thicker the material, the lower the pressure of the cuing gas. When cuing stainless steel, the cuing gas pressure increases relatively with the thickness of the material.
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