When we in the application of laser cutting machine in the whole process if the overload situation must be attached great importance to it, in many cases its overload will cause very serious harm, if we can not immediately deal with the word, will cause great harm to the future work, it is not clear that we are clear how to deal with it?
Laser cutting machine
Not only the utilization rate of the board is rapidly improved, but also the cutting quality and productivity are significantly changed. Laser cutting function cutting various shapes of parts, with strong practicability. The cutting quality of the parts immediately jeopardizes the welding quality of the product workpiece and the entire mechanical characteristics of the product. However, some practical operations in the application often cause the laser cutting machine overload problem, what is the actual problem?
Cutting thickness is not scientific, mainly cutting thickness beyond the power supply and its mouth allowed scope, we buy CNC machine tool low-temperature plasma cutting machine, laser cutting machine manufacturers will be based on the company's production and processing standards for its selection of the appropriate low-temperature plasma power supply and cutting nozzle model specifications, so as to reduce product costs for the company, It can also make the actual cutting effect specified, in other words, the actual cutting effect is a better situation.
However, many companies cannot properly operate in the application, and the thickness of the raw material cut will exceed the allowable range, resulting in damage to the electric grade nozzle and low temperature plasma power supply. In general, the general hole thickness is half of all normal cutting thickness.
Nozzle application is not standard, many people to the application, the current strength of the power supply has been turned on to improve the cutting rate and high efficiency, which will make the electric nozzle application load, and then destroy the nozzle. In general, the current intensity should be about 90% of the current flow in the nozzle operation. If you encounter this problem in the whole process of applying the laser cutting machine, you can refer to the above way to carry out maintenance and solve it.
Due to the low solubility of Ar, coupled with the rapid cooling rate of laser welding, the bubble can not escape and is residual in the welding, resulting in porosity. The porosity caused by laser welding production process is mainly caused by poor maintenance. In the whole process of electric welding, nitrogen invades the molten pool from the outside, and the solubility of nitrogen in liquid iron is very different from that of nitrogen in solid iron, so it is in the whole process of refrigeration and condensation of metal materials.
Because the solubility of nitrogen decreases with the decrease of temperature, when the molten pool metal material is cooled to gradually crystallize, the solubility will produce a large sudden decrease, then a lot of gas precipitates to produce vapor bubbles, if the up-raising rate of the vapor bubble is lower than the crystallization rate of the metal material, it is converted into pores.
In most laser welding production and processing, the gas supply nozzle of the laser welding machine needs to send maintenance gas to avoid oxidation of the welding air and prevent pollution of the metal material gas environment. Most of the reasons caused by pores are caused by the wrong operation of maintenance gas during laser welding production and processing, but different maintenance gas reasons are slightly different.
In the whole process of laser welding, nitrogen invades the molten pool from the outside, and the solubility of nitrogen in liquid iron is very different from that of nitrogen in solid iron, so it is in the whole process of refrigeration and condensation of metal materials.
Because the solubility of nitrogen decreases with the decrease of temperature, when the molten pool metal material is cooled to gradually crystallize, the solubility will produce a large sudden decrease, then a lot of gas precipitates to produce vapor bubbles, if the up-raising rate of the vapor bubble is lower than the crystallization rate of the metal material, it is converted into pores.
During laser welding, the metal material vapor inside the hole gushes outwards, causing the vapor vortex at the interface of the hole, and the argon is rolled into the bottom of the hole. Along with the hole moving forward, this argon will enter the molten pool in the form of a bubble. Due to the low solubility of argon gas, coupled with the rapid cooling rate of laser welding, the vapor bubble can not escape and is residual in the welding, resulting in porosity.
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