CNC Plasma Cutter for Sale

What Is A CNC Plasma Cutter and CNC Plasma Table?

CNC Plasma Table

It is a type of automatic cutting machine with custom welding table top, which can be well adapted to cut metal projects with different sizes. The CNC controller will make it with a high degree of manufacturing flexibility, high accuracy, stable quality, high productivity, easy to improve working conditions, and are conducive to modernization of production management. Such a tool is a combination of a cutter and controller, which can give play to the greater advantages of gas cutting. In order to realize automatic machining, it must be capable of continuous feeding and automatic feeding, and the torch must be able to move separately or in combination in the horizontal and vertical directions to form the required curve. The various functional parts of the machine must be able to closely cooperate and coordinate to achieve precise continuous cutting. At the same time, various technical parameters can be flexibly adjusted and optimized to meet the cutting requirements of different metals.

How Many Types of CNC Plasma Tables?

The most common types of CNC plasma cutting tables include 4×4, 4×8, 5×10 and 6×12 in feet, some user may call the series CNC tables as 48″ x 48″ types, 48″ x 96″ types, 60″ x 120″ types in inches, some user may call the table kits as 1212 types, 1325 types, 1530 types, 2040 types in millimeter (mm).

CNC Plasma Cutter

The term CNC stands for Computer Numerical Control. That is a CNC cutter will cut through metal using ionized gas with computerized command. A CNC plasma cutter is a type of computer numerical controlled automatic cutting system that uses ionized gas torch to cut metals into different profiles and shapes with CNC controller, including mild steel, stainless steel, carbon steel, galvanized steel, hot rolled steel, cold rolled steel, iron, brass, copper, alloy, aluminum, bronze, and titanium.

A CNC cutter kit is composed of machine frame, controller, power supply, gas torch, blade or sawtooth table, driver, motor, control system, software, guide rail, ball screw, optional parts and consumable parts. Some of the synonyms of a plasma cutter are cutting torch, arc cutter, cutting machine, arc welding cutter, cutting system, plasma table, metal cutter, cutting tool, arc welding machine, or plasma cutting device.

What Are The Types of Plasma Cutters?

The most common types of plasma cutters include the handheld and CNC variant (hobby types and industrial types). The most common power supplies include Huayuan power supply and Hypertherm power supply.

According to the working methods, the kits can be divided into air kits, dry kits, semi-dry kits and underwater kits.

According to the cutting quality and precision, you will meet the types of ordinary, fine, laser-like, and so on.

According to the appearances, the three types are listed bellow:

Portable CNC Kits

The machine is portable, easy to setup, compact in structure, small in space and low in manufacturing cost. However, due to the limitation of the cantilever structure, the stress conditions are poor, the transverse deformation is prone to occur, the transverse cutting width is limited, and the rigidity is poor during high-speed machining.

Gantry CNC Kits

The gantry-type supporting method is bidirectionally supported, the force is more uniform, the equipment has good rigidity, and can achieve a large lateral span, usually up to 3 to 10m. However, the equipment installation requirements are high, the structure is relatively large, and it takes up more plant area. The driving mode is divided into unilateral driving and bilateral driving. Unilateral drive and bilateral drive each have their own characteristics and applications. The unilateral drive avoids the high-precision synchronous control and complicated structure of the bilateral drive. However, due to the offset of the center of mass and the driving force does not pass through the center of mass, asymmetric inertial force will be generated during operation, which is prone to vibration, deformation and tilt. Therefore, it can only be used in a small span. The double-sided drive structure is relatively complicated and requires high-precision synchronous control on both sides, which can be used for a larger span and more stable movement.

CNC Table Kits

The cutting part and the machine are integrated, which is convenient to move in place, but the movement range of the cutting torch is relatively small, and the cutting width is subject to certain restrictions.

What Are Plasma CNC Cutters Used For?

These machines are used for cutting sheet metals, square and round metal tubes, including iron, cold rolled steel, hot rolled steel, stainless steel, galvanized steel, carbon steel, copper, brass, alloy, bronze, aluminum, titanium. They are used for machine tool manufacturing, petro-chemical equipment, light-industrial machinery, pressure vessel, shipbuilding, mining machinery, electric power, bridge construction, aerospace, and steel structure. They are used in hobbyists, home shop, home business, small shop, small business, school education, and industrial manufacturing.

How does plasma compare to a fiber laser cutter?

You need to consider the material to be cut and its thickness. Fiber laser cutting machines can provide higher precision and consistency. Plasma cutting machines have greater versatility and require lower capital investment.

Can aluminum and stainless steel be cut using modern plasma cutting technology?

In recent years, plasma cutting technology has made significant progress, redefining the quality of plasma cutting on mild steel, stainless steel, and aluminum. Plasma cutting now offers a wide range of stainless steel and aluminum cutting options for many applications.

Essential Components of Plasma Cutter:

CNC Control

The brain of the entire machine converts the cutting program into electrical signals, which indicate the direction and speed of the machine’s cutting. It also sends out signals to the plasma cutting machine, height control, and other peripherals to instruct how and when to operate.

Mechanical Parts

Each machine must have moving parts, such as the frame (long axis), the torch bracket, and the Z-axis (up and down), which can manipulate and move the plasma torch to produce the required cutting parts.

Plasma Power

Plasma equipment is mainly used for surface brightening of stainless steel products with complex geometric shapes. The mechanism is that a relatively stable plasma field is formed around the electrode applied by the liquid, and the surface analysis of the object is achieved through the exchange of ions in the plasma field and the dissociation of neutral atoms. Due to the surface morphology characteristics of the object, the protruding parts have a higher plasma concentration, so that they can be quickly peeled off until they reach a relatively flat state; and because the plasma field surrounds the entire surface of the object, all parts of the object can be obtained The corresponding polishing effect.

How does Plasma compare to Oxyfuel?

Plasma cutting machines can cut materials much faster than oxyfuel, but plasma can only pierce materials with a thickness not exceeding 50mm. Compared with oxyfuel, plasma can also cut a wider range of materials and transfer less heat to the material. Usually, the plasma cutting torch and the oxy-fuel cutting torch are installed on the same CNC cutting machine, so that the machine has a larger processing thickness range, such as 3mm-150 + mm. In most work, plasma is more effective than oxygen fuel, because 90% of the steel-cut thickness is less than 50 mm, if you compare some suitable plasma cutting system with the oxygen fuel system, it will process 50 mm mild steel The speed is more than twice as fast.

Plasma Cutting Machine VS Fiber Laser Cutting Machine:

How Does A Fiber Laser Machine Work?

Because the fiber laser cutting machine replaces the traditional mechanical knife with an invisible beam, the mechanical part of the laser head has no contact with the work, and will not scratch the work surface during work; the laser cutting speed is fast, and the incision is smooth and flat. No subsequent processing is required; the cutting heat affected zone is small.
The fiber laser cutting machine uses a high-power density laser beam to scan the surface of the material, heat the material to thousands to tens of thousands of degrees Celsius in a very short time, to melt or vaporize the material, and then use high-pressure gas to remove the melted or vaporized material from Blow away in the slit to achieve the purpose of cutting the material.

How does a plasma cutter work?

The plasma arc cutting process is shown in the figure. The basic principle is that the arc formed between the electrode and the workpiece is restricted by the fine hole copper nozzle. This increases the temperature and velocity of the plasma emitted from the nozzle. The temperature of the plasma exceeds 20000°C, and the speed can be close to the speed of sound. When used for cutting, the plasma flow will increase so that the penetrating plasma jet cuts through the material and removes the molten material in the outflowing plasma.

How does a plasma cutter work How does a plasma cutter work The difference between this process and the oxy-fuel process is that the plasma process operates by melting the metal using an electric arc, while in the oxy-fuel process, oxygen oxidizes the metal, and the heat generated by the exothermic reaction melts the metal. Therefore, unlike the oxyfuel process, the plasma process can be used to cut metals that form refractory oxides, such as stainless steel, aluminum, cast iron, and non-ferrous alloys.

Advantages And Disadvantages Of Fiber Laser Cutting

Advantage:

Narrow cutting groove, the cutting surface can be directly used for welding without grinding.
Fast cutting speed: The cutting speed of thin slices can reach 10m/min, which is much faster than plasma cutting.
Good cutting quality: small deformation, low surface roughness, low cutting edge slope.
High accuracy: positioning accuracy can reach 0.05mm, repositioning accuracy can reach 0.02mm

Disadvantages:

High cost: Both initial investment and subsequent maintenance require high costs.
Low efficiency: At present, fiber laser cutting of thin plates is more cost-effective. However, when cutting thick plates, the efficiency is low, so unless the quality requirements are high, it is not suitable for fiber laser cutting.

Advantages And Disadvantages Of Plasma Cutting

Advantage:

In the process of cutting medium and thick plates, it can reach a very high cutting speed, much higher than laser cutting and flame cutting.
The initial equipment investment is lower than the laser, and the subsequent maintenance cost is much lower.

Disadvantages:

The verticality of the cutting surface is poor: the side of the cutting surface will have a large inclined cutting edge, and the verticality will be very poor.
Produce more cutting slag: Cutting slag will be generated at the bottom of the cutting surface during the cutting process. In order not to affect the quality of post-processing, this slag must be removed by grinding, which also increases labor costs.
Generate harmful gas and arc light: The principle of plasma cutting determines that harmful dust and arc light will be generated during the cutting process. However, underwater plasma cutting is also used to avoid this defect.
High cost in the later stage: More cutting nozzles are consumed in the later stage, and the cost is very high.

Hot Sale Plasma Cutter

We have a variety of models of plasma cutting machines for you to choose from, including a plasma cutting machine with a rotary axis, a plasma cutting machine for metal, portable plasma metal cutting machine, mini metal portable CNC plasma cutting machine, low-cost portable CNC plasma cutting machine, etc.