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激光切割加工的工艺要求全介绍

2018-08-22 15:40:07 常州亿创能源科技有限公司 阅读

激光切割技术被越来越多的行业应用,随着科技的不断发展以及制造业大国向我国的转移,未来机械制造行业也突出了更高的加工要求。汽车行业、船舶行业等等都对激光切割机行业提出了不同的加工要求。

大发体育Laser cutting technology is used by more and more industries. With the continuous development of science and technology and the transfer of large manufacturing countries to China, the future mechanical manufacturing industry has also highlighted higher processing requirements. The automobile industry, shipbuilding industry and so on all put forward different processing requirements for the laser cutting machine industry.

大发体育1、控制断裂切割

1. Control fracture cutting.

大发体育对于容易受热破坏的脆性材料,通过激光束加热进行高速、可控的切断,称为控制断裂切割。这种切割过程主要内容是:激光束加热脆性材料小块区域,引起该区域大的热梯度和严重的机械变形,导致材料形成裂缝。只要保持均衡的加热梯度,激光束可引导裂缝在任何需要的方向产生。

大发体育For brittle materials which are easy to be destroyed by heat, high-speed and controllable cutting by laser beam heating is called controlled fracture cutting.  The main content of this cutting process is: laser beam heating brittle material small area, causing large thermal gradient and serious mechanical deformation in this area, resulting in material cracks. As long as a balanced heating gradient is maintained, the laser beam can guide cracks in any direction required.

2、氧化熔化切割

大发体育2. Oxidation and cutting

熔化切割一般使用惰性气体,如果代之以氧气或其它活性气体,材料在激光束的照射下被点燃,与氧气发生激烈的化学反应而产生另一热源,称为氧化熔化切割。

Melting cutting generally uses inert gases, if replaced by oxygen or other active gases, materials are ignited under the irradiation of laser beams, and react with oxygen to produce another heat source, called oxidation melting cutting.

3、熔化切割

3. Melt cutting

大发体育当入射的激光束功率密度超过某一值后,光束照射点处材料内部开妈蒸发,形成孔洞。一旦这种小孔形成,它将作为黑体吸收所有的入射光束能量。小孔被熔化金属壁所包围,然后,与光束同轴的辅助气流把孔洞周围的熔融材料带走。随着工件移动,小孔按切割方向同步横移形成一条切缝。激光束继续沿着这条缝的前沿照射,熔化材料持续或脉动地从缝内被吹走。

When the incident laser beam power density exceeds a certain value, the material evaporates at the irradiation point, forming a hole. Once the pore is formed, it will absorb all incident beam energy as a blackbody. The hole is surrounded by a wall of molten metal, and then the molten material around the hole is carried away by an auxiliary flow coaxial with the beam. As the workpiece moves, the hole moves along the direction of cutting to form a slit.  The laser beam continues to illuminate along the front edge of the seam, and the molten material is blown continuously or pulsating from the seam.

大发体育4、汽化切割

4. Vaporization cutting

大发体育在高功率密度激光束的加热下,材料表面温度升至沸点温度的速度是如此之快,足以避免热传导造成的熔化,于是部分材料汽化成蒸汽消失,部分材料作为喷出物从切缝底部被辅助气体流吹走。

When heated by a high power density laser beam, the surface temperature of the material rises to the boiling point so fast that it can avoid melting due to heat conduction, that part of the material vaporizes into vapor and disappears, and part of the material is blown away from the bottom of the notch by auxiliary gas as a jet.

以上就是激光切割加工大发体育工艺要求,未来激光切割技术会有更加好的发展,希望以上的介绍能够真正帮到大家。

大发体育Above is the laser cutting processing technology requirements, the future laser cutting technology will have a better development, I hope the above introduction can really help everyone.


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