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What is Plasma Cutting Machine?

Oxy Plasma Cutting Machine krrass

What is Plasma Cutting Machine?

Plasma Cutting Machine that processes metals by means of plasma cutting technology.

Plasma arc cutting machine is a machine that processes metal materials by means of plasma cutting technology.

Plasma cutting is a processing method that makes use of the heat of high temperature plasma arc to melt (and evaporate) the metal part or part of the workpiece incision, and eliminate the molten metal by the momentum of high speed plasma to form a incision.

Plasma Cutting Machine Introduction:

Plasma Cutting Machine is a Machine that processes metal materials by means of Plasma Cutting technology.

Plasma cutting is a processing method that makes use of the heat of high temperature plasma arc to melt (and evaporate) the metal part or part of the workpiece incision, and eliminate the molten metal by the momentum of high speed plasma to form a incision.

Plasma Cutting Machine Features:

Plasma Cutting Machine

  1. Automatic and semi-automatic cutting double mode selection
  2. Digital precise control of cutting length
  3. Easy to operate
  4. Plasma Cutting Machine with different working gases can cut all kinds of oxygen cutting hard to cut metals, especially for non-ferrous metals (aluminum, copper, titanium, nickel) cutting effect is better; Its main advantage is that when cutting metal thickness is not big, plasma cutting speed is fast, especially when cutting ordinary carbon steel sheet, the speed can reach 5~6 times of oxygen cutting method, cutting surface smooth, small thermal deformation, almost no heat affected zone.
  5. Plasma cutting machine, can be used to work gas (working gas is the conductive medium of plasma arc, is the heat carrying body, but also exclude the molten metal in the incision) on the plasma arc cutting characteristics and cutting quality, speed have obvious influence. The commonly used plasma arc gas includes argon, hydrogen, nitrogen, oxygen, air, water vapor and some mixed gases.
  6. Plasma cutting machine is widely used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, construction machinery, steel structure and other industries.
  7. By obtaining plasma from water vapor such a safe, simple, effective, multi-functional and environmentally friendly method for the thickness of 0.3mm or more metal hot processing (cutting, fusion welding, brazing, quenching, spraying, etc.), this is the first in the history of metal processing industry.
  8. Plasma product “Multiplaz 3500” consists of plasma gun and chassis, with a total weight of 9 kg. The essence of the working process of a plasma device is as follows: an arc is generated between the nozzle (anode) and the electrode (cathode) inside the gun, which ionizes the moisture between, thus achieving a plasma state. At this time, the ionized vapor under internal pressure in the form of plasma beam out of the nozzle, its temperature is about 8000℃. This allows cutting, welding, fusion welding and other forms of heat treatment of non-combustible materials.

The machine structure:

  1. The frame adopts fully welded structure, which is strong and reasonable, simple to operate and durable.
  2. Fast cutting speed, high precision. Cutting mouth small, neat, no slag phenomenon. On the basis of the traditional numerical control system, the control mode of cutting is improved, and the second dressing process is avoided.
  3. Suitable for low carbon steel plate, copper plate, iron plate, aluminum plate, galvanized plate, titanium plate and other metal plate.
  4. High configuration of CNC system. Automatic arc ignition, stable performance, arc ignition success rate of more than 99%.
  5. Support standard G code path files generated by Wentai, BeiAA Haier, ARTCAM, Type3 and other software. The control system uses U disk to exchange processing files, easy to operate.

The performance parameters:

Processing materials:Iron plate, aluminum plate, galvanized plate, white steel plate, titanium plate

Working principle:

Plasma Cutting Machine is heated to a very high temperature and is highly ionized gas, it will arc power will be transferred to the workpiece, high heat so that the workpiece melting and blown off, forming a plasma arc cutting working state.

After the compressed air enters the torch, it is divided into two ways by the gas chamber, which forms plasma gas and auxiliary gas. The arc of plasma gas melts the metal, while the auxiliary gas cools the torch components and blows away the melted metal.

Cutting power supply includes two parts: main circuit and control circuit, electrical principle: the main circuit includes contactor, three-phase power transformer with high leakage reactance, three-phase bridge rectifier, high-frequency arc coil and protection elements. The external characteristics of the power source induced by high leakage resistance. The control circuit completes the whole cutting process through the button switch on the cutting torch:

Pre-ventilation – main circuit power supply – high frequency arc – cutting process – rest arc – stop.

The power supply of the main circuit is controlled by the contactor; Gas through short by the solenoid valve control;

The high frequency oscillator is controlled by the control circuit to ignite the arc, and the high frequency stops working after the arc is established.

In addition, the control circuit also has the following internal locking functions: thermal control switch action, stop work.

Production application:

The advantage of plasma cutting machine is that the plasma arc energy is more concentrated, higher temperature, faster cutting speed, small deformation, but also can cut stainless steel, aluminum and other materials.

The shortcomings of plasma cutting are arc light intensity, noise, dust, pollution to the environment, a lot of medium thickness is used underwater plasma cutting, cutting thickness also has a certain limit. Similarly, gas flow, arc length, telegraph quality, current size, cutting speed all affect the quality, master is not buried, not as simple as flame cutting. Plasma cutting gun should not be much, because the cutting speed is fast, easy to be affected by the above factors appear inconsistent, so that the cutting quality is not the same. Generally speaking, for thin plate cutting, plasma cutting incision surface quality is better than fire filling cutting, and hanging slag is less.

In recent years, foreign manufacturers have developed a new technology called fine plasma or high precision plasma, which has been introduced by domestic manufacturers. The effect is better. By improving the design of the cutting moment, the quality of the cutting surface of the workpiece is significantly improved, and the verticality of the shao edge can reach 0-1.5 °, which is especially beneficial to improve the cutting quality of the thick plate. Because of the improved cutting gun, the electrode life is increased several times. However, the distance between the gun and the steel plate is higher, the height sensor on the gun is more sensitive, and the lifting reaction of the gun is faster.

Therefore, the use of plasma cutting 4-30 mm steel plate is a more ideal method, can avoid the oxygen acetylene cutting speed is slow, deformation, incision melting serious, serious slag hanging shortcomings. A certain thickness of stainless steel and other materials are obtained.

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