How to use metal laser cutting machine to process good samples?

In the laser cutting machine, we must master solve several key technologies for plates with high cutting accuracy thick thickness, focus position control is one of them.One of the advantages of laser cutting is that the energy density of the beam is high, so the focal spot diameter is as small as possible to facilitate slitting, because the smaller the focus lens depth, the smaller the focal spot diameter, so how to process a good sample ?Next, the editor will share with you.

Large surrounding laser cutting machine, clean environmentally friendly, fast cutting speed

　　1. Cutting speed

　　The cutting speed is affected by the laser power density, material properties, material thickness, etc., while other parameters remain unchanged, changing the power of the laser cutting machine (within the required range), changing the beam mode, changing the focus spot size will all affect Cutting speed has an effect.

　　When cutting thin metals, within a relatively adjusted range, the cutting speed can still maintain a satisfactory cutting quality, while for thick metals, the slow cutting speed will cause the discharged hot melt material to ablate the cut surface, making the cut surface become Rough, can meet the requirements for cutting quality.

Carbon steel cutting samples

　　2. Laser output power

　　For lasers with continuous wave output, the laser power mode are both important for cutting.It can often be found that at a focal point less than high power, a higher power density is obtained a better cutting quality is obtained.

　　3. Focus position adjustment

　　The laser power density affects the cutting speed. After knowing which focal length lens is used, the relative position of the focal point the workpiece surface is very important for the cutting quality.Due to the high power density at the focal point, in most cases, the focal position is just on the surface of the workpiece when cutting, slightly below the surface.The constant position of the focus the workpiece during the entire cutting process is an important condition for obtaining a stable cutting quality.Sometimes, the lens is heated due to poor cooling, which causes the focal length to change, which requires timely adjustment of the focus position.

Stainless steel cutting samples

　　4. Gas pressure

　　The type pressure of the gas will have a greater impact on the cutting speed of the laser cutting machine.For most metal laser cutting, active gas (as long as it is oxygen) is used to form an oxidative exothermic reaction with the hot metal. This additional heat can speed up the cutting speed by 1/3 to 1/2.

　　Laser cutting practice shows that when the gas is oxygen, its purity has an impact on the cutting quality.Oxygen purity of less than 2% will reduce the cutting speed by 50% will result in poor cut quality.

Copper aluminum samples

　　In summary, although the factors affecting laser cutting are more complicated, the cutting speed, focal position laser output power are three very important variables.During the cutting process, if it is found that the cutting quality is significantly deteriorated, the factors discussed above should be checked first adjusted in time.

　　Laser cutting has no burrs, wrinkles high precision, which is better than plasma cutting.For many electromechanical manufacturing industries, because the modern laser cutting system of the microcomputer program can facilitate the cutting of workpieces of different shapes sizes, it is often preferred over the punching molding processes; there is no need to repair the mold, it also saves the time of changing the mold, thus Save processing costs reduce product costs, so overall it is more economically economical.