切割辅助气体主要是 N2 或 O2，有的材料切割可以使用压缩空气作为切割辅助气体。N2 切割的切割面比较光亮；O2 切割的切割面由于材料被氧化而发黑。切割辅助气体的纯度越高，切割面的质量越好。激光所用气体包括激光器工作和保护气体以及切割辅助气体。用感应电流使工件局部加热的表面热处理工艺。这种热处理工艺常用于表面淬火，也可用于局部退火或回火，有时也用于整体淬火和回火。
The cutting auxiliary gas is mainly N2 or O2. Some materials can be cut by compressed air as cutting auxiliary gas. The cutting surface of N2 is relatively bright; the cutting surface of O2 cutting is black due to the oxidation of the material. The higher the purity of the cutting auxiliary gas, the better the quality of the cutting surface. The gas used in laser includes laser working and protecting gas and cutting auxiliary gas. A surface heat treatment process using induction current to locally heat the workpiece. This heat treatment process is often used for surface hardening, and also for partial annealing or tempering. It is also used for integral quenching and tempering.
高频及感应加热技术目前对金属材料加热效率最高、速度最快，且低耗环保。它已经广泛应用于各行各业对金属材料 的热加工、热处理、热装配及焊接、熔炼等工艺中。变 磁场的电磁感应作用使工件内产生封闭的感应电流--涡流。感应电流在工件截面上的分布很不均匀，工件表层电流密度很高，向内逐渐减小, 这种现象称为集肤效应。工件表层高密度电流的电能转变为热能，使表层的温度升高，即实现表面加热。
High frequency and induction heating technology is currently the most efficient and fast heating material for metal materials, and low consumption and environmental protection. It has been widely used in various industries such as hot processing, heat treatment, thermal assembly, welding and smelting of metal materials. The electromagnetic induction of a variable magnetic field causes a closed induced current eddy in the workpiece. The distribution of induced current on the cross section of workpiece is very uneven. The current density of workpiece surface is very high, and it decreases gradually inward. This phenomenon is called skin effect. The electrical energy of the high density current on the surface of the workpiece is transformed into heat energy, which makes the surface temperature rise, that is, surface heating.
激光器工作气体用于产生激光，保护气体用于保护光学器件、驱动光闸。激光器工作气体由氦气、氮气、二氧化碳气体按照一定比例混合，这个比例在工厂预定好，确保最佳性能，不要随便调整，比例不当，可能会造成激光系统的失效和高压电源的损害。激光器所用气体均为高纯度，均在 99.999%以上。
The laser working gas is used to generate laser, and the protective gas is used to protect optical devices and drive light gates. The working gas of the laser is mixed in a certain proportion of helium, nitrogen and carbon dioxide. This proportion is prearranged in the factory to ensure the best performance. Do not adjust freely, and the proportion is improper, which may cause the failure of the laser system and the damage of the high voltage power supply. The gases used in the lasers are all high purity, all above 99.999%.
电流频率越高，工件表层与内部的电流密度差则越大，加热 层越薄。在加热层温度超过钢的临界点温度后迅速冷却，即可实现表面淬火。将工件放入感应器(线圈)内，当感应器中通入一定频率的交变电流时,周围即产生交变磁场。
The higher the current frequency, the greater the current density difference between the workpiece surface and the interior, the thinner the heating layer is. When the heating layer temperature exceeds the critical point temperature of steel, it can be cooled rapidly, so that the surface hardening can be realized. When the workpiece is put into the inductor (coil), the alternating magnetic field is generated around the inductor in a certain frequency alternating current.
它不但可以对工件整体加热，还能对工件局部的针对性加热；可实现工件的深层透热，也可只对其表面、表层集 中加热；不但可对金属材料直接加热，也可对非金属材料进行间接式加热。等等。因此，感应加热技术必将在各行各业中应用越来越广泛。
It can not only heat the workpiece as a whole, but also heat the part of the workpiece, can realize the deep heat of the workpiece, and can only heat the surface and surface of the workpiece. It can not only heat the metal material directly, but also heat the nonmetal materials indirectly. Wait。 Therefore, induction heating technology will be applied more and more widely in all walks of life.
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