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What Is Small CNC Plasma Cutting Machine?
Portable CNC plasma cutter, also known as small plasma cutting machine, is a kind of cnc metal cutting machine, it has compact machine structure and competitive price, plasma system and oxy fuel cutting can be installed on the same machine, thus it can be widely used for different materials & thickness. Also, the running is controlled by CNC system, which guarantees the precise running. This cnc plasma machine is an ideal metal fabricating machine for beginners, small business and home hobbyists.

Our small cnc plasma cutting machine is best for almost any application referring to the size of material because of the compatible built such that the dimensions of cutting can be increased or decreased as per requirement. You can control the torch height for best use of cutter. Plasma cutting machine machines manufactured by us are best quality, cost effective and affordable made with light and tougher alloy so that it can be moved to any place without any type of Damage.

In order to correctly use the CNC plasma cutting machine for high-quality rapid cutting, we must deeply understand and master the cutting process parameters.

1、 Cutting current
It is the most important cutting process parameter, which directly determines the cutting thickness and speed, that is, the cutting capacity. The larger the cutting current, the higher the cutting capacity, the faster the cutting speed, the wider the cutting opening, the faster the damage speed of the cutting nozzle and the higher the cost. Therefore, the cutting current should be correctly selected according to the thickness of the material before cutting.

2、 Cutting speed
The best cutting speed range can be selected according to the equipment description or determined by test. Due to the thickness of the material, different materials, high and low melting point, thermal conductivity and surface tension after melting, the cutting speed also changes accordingly. The speed directly affects the cutting quality. The higher and lower the speed, the worse.

3、 Arc voltage
It is generally considered that the normal output voltage of the power supply is the cutting voltage. Plasma cutting machine usually has high no-load voltage and working voltage. When the current is constant, the increase of voltage means the increase of arc enthalpy and cutting ability. If we increase the enthalpy, reduce the diameter of the jet and increase the gas flow rate, we can often obtain faster cutting speed and better cutting quality.

4、 Nozzle height
It refers to the distance between the nozzle end face and the cutting surface, which constitutes a part of the entire arc length. Because small cnc plasma cutting machine generally uses constant current or steep drop external power supply for arc cutting, the current changes little after the nozzle height increases, but it will increase the arc length and lead to the increase of arc voltage, so as to improve the arc power; But at the same time, the arc length exposed to the environment will increase, and the energy loss of arc column will increase.

In the case of the combined action of the two factors, the effect of the former is often completely offset by the latter, which will reduce the effective cutting energy and reduce the cutting capacity. It usually shows that the blowing force of the cutting jet is weakened, the residual slag at the lower part of the notch is increased, and the upper edge is over melted and rounded.

5、 Cutting power density
In order to obtain high-pressure plasma arc cutting arc, the cutting nozzle adopts smaller nozzle aperture, longer hole length and enhanced cooling effect, which can increase the current passing through the effective section of the nozzle, that is, the power density of the arc. But at the same time, compression also increases the power loss of the arc. Therefore, the effective energy actually used for cutting is smaller than the power output, and its loss rate is generally between 25%-50%. Some methods, such as water compression plasma arc cutting, will have a greater energy loss rate. This problem should be considered in the design of cutting process parameters or the economic accounting of cutting costs for CNC and other ion cutting machines.

The compact size and portability make machine installation easier than ever. No special measuring tools are required for the assembly and setup of all components such as the machine body, rails, and crossbars.

What Is Advantage Of CNC Mini Plasma Cutting Machine?
1.small cnc plasma cutting machine can cut all kinds of metals which are difficult to cut by oxygen, especially for non-ferrous metals (stainless steel, aluminum, copper, titanium and nickel).
2. The main advantages of plasma cutter are that when cutting metal with small thickness, plasma cutting speed is fast, especially when cutting ordinary carbon steel sheet, the speed can reach 5-6 times of oxygen gas cutting method The cutting surface is smooth, the heat deformation is small.
3. The commonly used plasma arc working gases are argon, hydrogen, nitrogen, oxygen, air, water vapor and some mixed gases… Plus its Automatic controller and its height controller is automatic so its very little harmful to human body.