SteelTailor Tells You How to Purchase Plasma Power and Plasma Cutting Machines

This is reprinted from Yeah!Legend Blog:

http://yeahlegend.com/blog/?p=105

Plasma power is an important equipment of plasma CNC cutting machine. Besides of greatly improving cutting efficiency and quality, plasma power could save the purchasing cost of CNC cutting machine. We’d like to list several notes about how to choose plasma power:

First of all, we need to know the requirements. Plasma cutting power includes machine-used plasma power and hand-held plasma power. Generally speaking, CNC cutting machines need machine-used plasma power. Speaking to arcing, plasma power has two ways, touching arcing and non-touching arcing (button). At present, CNC cutting machines prefer non-touching arcing. If there is a button on hand-held torch, it means this non-touching arcing will be used. The electric current of plasma power with non-touching arcing is generally above 100A. The electric current of machine-used plasma power is also larger than 100A. It is an important feature for power supply of 100A electric current that it will cause great radiation and probably cause damage to operators.

Second, plate thickness is required to be considered when choosing electric current of plasma power. Plasma power with different Watt share will share different price.From the consideration of cost, higher the Watt is, more power consumption and higher price.

Thirdly, we choose type and manufacturer of plasma power according to the requirement of quality of cutting section. Plasma cutting would cause the cutting notch large upside and small downside because of features of plasma arc. Cutting section is always tilted and could be as vertical as flame cutting. The slant angle for common plasma is about 13 to 15 degrees. Plasma power could be classified as common plasma, fine plasma and Laser-like plasma in terms of vertical degree and cutting precision. The cutting quality is, of course, related to the price. 

Fourth, plasma power contains inverter type and SCR. The former one is lighter.

Fifth, plasma power could be equipped to hand-held cutting, as well as one part of CNC cutting machine package. To realize the clamping on CNC cutting machine, CNC straight handle torch shoule be considered in procurement.

Sixth, the length of plasma cable should be related to the distance between torch and plasma power in full width during cutting process. If the cable is too long, the arc punching and cutting capability of this machine would be reduced.

Seventh, plasma power contains domestic plasma power and imported plasma power. The model and cutting condition of plate decide the specific choice of plasma power. In order to achieve good cutting effect, the quality of cutting machine and the skilled operation bear important responsibility.