Best CNC Plasma Table CNC Profile Cutting Machine

Good price best cnc plasma table adopts integrated design as well as a combination of CNC,mechanical transmission and thermal cutting. That makes it to be a high technology, high precision and high reliability plasma cutting machine.

Advantages Of best cnc plasma table

This combo machine has much advantage which are obvious as follows:

1).Both CNC plasma and CNC router are integrated on the same machine base, which enable the machine the capability of multiple-functions and wide application for metal & non-metal materials, advanced function but low cost, best solution for entry level user or home hobbyists;

2).Heavy duty machine table welded by strong tube & steel plates and goes through strict stress relief & aging treatment to reduce welding residual stress, no deformation after long service time, thus the high-precision running & excellent performance can be well guaranteed;

3).Two sets of independent function modular are available: plasma cutting system, including Starfire CNC controller, plasma torch, torch height controller(THC), plasma power source(60-200A), etc; The CNC router system, including RichAuto hand-held controller, 3.5kw air cooling electronic spindle, etc.

4).Different worktable for the 2 function modular: aluminum profile worktable for CNC router and water table with sawtooth for CNC plasma cutting. The workbench of CNC router is placed just above CNC plasma countertop, and its unique movable design.makes it possible to shift in accordance with different working requirement, eg, when cutting steel plates on the plasma table, the CNC router table can be moved aside to make room for cnc profile cutting machine, thus greatly increasing the working efficiency.

How cnc plasma cutter works

cnc profile cutting machine is a process in which electrically conductive materials are cut through by means of an accelerated jet of hot plasma. Typical materials that can be cut with a plasma torch are steel, stainless steel, aluminium, brass, copper and other conductive metals. Plasma cutting is widely used in manufacturing, automotive repair and restoration, industrial construction, salvage and scrapping. Due to the high speed and precision of the cuts at low cost, plasma cutting is widely used from large industrial CNC applications to small hobby companies where the materials are subsequently used for welding. Plasma cutting - Conductive gas with a temperature of up to 30,000°C makes plasma cutting so special.

The basic process in plasma cutting and welding is to create an electrical channel of superheated, electrically ionised gas – i.e. plasma - from the plasma cutter itself through the workpiece to be cut, thus forming a finished circuit back to the plasma cutter via an earth terminal. This is achieved by a compressed gas (oxygen, air, inert gas and others depending on the material to be cut) which is blown to the workpiece at high speed through a focused nozzle. Within the gas, an arc forms between an electrode near the gas nozzle and the workpiece itself. This electric arc ionises part of the gas and creates an electrically conductive plasma channel. As the current from the cutting torch of the plasma cutter flows through this plasma, it gives off enough heat to melt through the workpiece. At the same time, much of the high-speed plasma and compressed gas blows the hot molten metal away, separating the workpiece.

Starting the Cutting Process

Not all systems work the same way. Firstly, there is a generally lower-budget version called high frequency contact. This is not available for CNC plasma cutters because the high frequency can interfere with modern equipment and cause problems.

This method uses a high voltage and high frequency spark. The creation of the spark takes place when the plasma torch touches the metal. This closes the circuit and creates the spark which, in turn, creates plasma.

Another option is the pilot arc method. First, the spark is created inside the torch by a high voltage and low current circuit. The spark creates the pilot arc which is a small amount of plasma.

The cutting arc gets created when the pilot arc is brought into contact with the workpiece. The operator can now start the cutting process.

A third way is using a spring loaded plasma torch head. Pressing the torch against the work piece creates a short circuit which makes the current start to flow.

Releasing the pressure establishes the pilot arc. The following is the same as in the previous method. That is bringing the arc into contact with the work piece.