数控等离子切割机的切割速度影响表现_等离子切割采购_特种机床采购__采购中心

正确使用数控等离子切割机进行高质量的快速切割，必须对切割工艺参数进行深刻的理解和掌握。数控等离子切割机的使用以及切割工艺参数的选择对切割质量、切割速度和效率等切割效果的影响是至关重要的。 The accurate use of CNC plasma cutting machine for high quality fast cutting, we must have a deep understanding and grasp of cutting process parameters. The use of CNC plasma cutting machine and the selection of cutting process parameters have a great influence on cutting quality, cutting speed and efficiency.

主要表现：
Main performance:

1、切割速度适度地提高能够改善切口质量，即切口略有变窄，切口表面更加平整，同时可以减小变形。
1. A moderate increase in cutting speed can improve the incision quality, that is, the incision is slightly narrower, the incision surface is more flat, and the deformation can be reduced.

2、切割速度过快使得切割的线能量低于所需的量值，切缝中射流不能快速将熔化的切割熔体立即吹掉而形成较大的后拖量，伴随着切口挂渣，切口表面质量下降。
2. Too fast cutting speed makes the cutting line energy lower than the required value, and the jet in the slit cannot quickly blow off the melted cutting melt immediately, resulting in a large amount of drag, which is accompanied by the slags hanging on the incision, and the quality of the incision surface decreases.

3、当切割速度太低的时候，由于切割处是等离子弧的阳极，为了维持电弧自身的稳定，阳极斑点或者阳极区必然要在离电弧最近的且风附近找到传导电流地方，同时会向射流的径向传递更多的热量，因此使得切口变宽，切口两侧熔融的材料在底缘聚集并凝固，形成不易清理的挂渣，而切口上缘因加热熔化过多而形成圆角。
3, when the cutting speed is too low, due to the anode is the plasma arc cutting, in order to maintain the stability of the arc itself and the anode spots or anode area must find in close proximity to the arc and recent wind conduction current place, at the same time to the jet of radial transfer more heat and thus makes the incision width and incision on both sides of the molten material in bottom flange and solidified, form is not easy to clean, hang slag and incision on the edge formed by heat melt too much rounded corners.

4、当速度极低的时候，由于切口过宽，电弧甚至会熄灭。由此可见，良好的切割质量与切割速度是分不开的。
4, when the speed is very low, because the incision is too wide, the arc will even extinguish. Thus, good cutting quality and cutting speed is inseparable.

5、切割速度：切割速度范围可按照设备说明选定或者用试验来确定，由于材料的厚薄度、材质不同、熔点高低、热导率大小以及熔化后的表面张力等因素，切割速度也相应变化。
5. Cutting speed: the optimal cutting speed range can be selected according to the equipment instructions or determined by experiments. Due to the thickness of materials, different materials, melting point, thermal conductivity and surface tension after melting and other factors, the cutting speed also changes accordingly.

6、电弧电压：一般认为电源正常输出电压即为切割电压。数控等离子切割机通常有较高的空载电压和工作电压，在使用电力能高的气体例如氮气、氢气或者空气时，稳定等离子弧所需要的电压会更高。当电流一定的时候，电压的提高意味着电弧焓值的提高和切割能力的提高。如果在焓值提高的同时，减小射流的直径并加大气体的流速，往往可以获得更快的切割速度和更好的切割质量。
6. Arc voltage: it is generally believed that the normal output voltage of the power supply is the cutting voltage. Plasma arc cutters usually have higher no-load and operating voltages, and the voltage required to stabilize the plasma arc is higher when using high-power gases such as nitrogen, hydrogen, or air. When the current is constant, the increase of voltage means the increase of arc enthalpy and cutting ability. If the enthalpy value is increased, the diameter of the jet is reduced and the velocity of the gas is increased, faster cutting speed and better cutting quality can be obtained.

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