Company Profile
Hubei Meisar CNC Technology Co., Ltd focus on metal sheet and tube processing, specialized in developing, manufacturing distributing and servicing globally kinds of portable CNC plasma flame cutting machines, gantry CNC plasma and flame cutting machines, table CNC plasma and flame cutting machines, pipe CNC plasma and flame cutting machine, fiber CNC laser cutting machines which are using in metal sheet and tube cutting.
Why Choose Us?
Professional Team
Hubei Meisar CNC Technology Co., Ltd own a large number of specialists and outstanding technicians engaged in mechanical, electrical automation controlling technology, electronic information engineering and computer software.
Safety Assurance
Hubei Meisar CNC Technology Co., Ltd have had the international experience over 15 years on cnc plasma and flame cutting machines, have oversea distributor in Taiwan, India, Malaysia, Sri Lanka, Mexico etc, can offer local consulting. Sincerely thanks every friends' trust, looking forward to you becoming one member of we family.
Customization requirements
Hubei Meisar CNC Technology Co., Ltd is committed to build the brand of the high end but practical cnc cutting machines, with options of cutting way and cutting capacity.
Complete After-Sale Service
Meisar CNC is with a vision of 15 years and the frontiers of the cnc cutting machines manufacturing and related.
Related Product
With good rigidity. All weldings are vibration aging destress treatment, effectively prevent structural deformation;
Portable CNC Oxy Fuel Cutting Machine
Portable cnc oxy fuel cutting machine by Hubei Meisar CNC is the most classical and economical gas CNC cutting machine.
Cutting material: Kinds of metal, especially for mild steel, medium carbon steel, stainless steel etc.
CNC flame cutting machine gantry type MS-G by Hubei Meisar CNC is the most efficient metal sheet CNC cutting machine.It provide your fabrication shops with the most efficient metal sheet CNC cutting solutions.
Mini Cnc Metal Cutting Machine
1.Cutting way: flame and or plasma 2.Effective Cutting Range: 59" × 118" (1500mm × 3000mm) or customized 3.Max Cutting Thickness: 5-29/32" (120mm)
Carbon steel categories: Carbon steel generally can be divided into 3 categories
Industrial Cnc Plasma Cutting Machine
This Industry cnc plasma cutting machine has CNC function like the gantry CNC cutting machine; it can cut any complex plane figure,
Gas cutting machine portable type, with oxygen fuel gas cutting, to offer you the metal plate cutting.
What is Flame CNC Cutting Machine?
Flame cutting is a process that involves cutting steel and other metals using oxygen and a gas as fuel. This gas can be acetylene, propane, or natural gas, which is why the process can be known as oxy-fuel cutting or oxy acetylene cutting.
It is a type of thermal cutting method that, as its name suggests, using heat to cut through hard material.
CNC flame cutting machine is the numerical control flame cutting, and numerical control machine has types of cantilever type, gantry type and bench types.
Benefits of Flame Gas Cutting Machine
Cost-effectiveness: Flame-cutting equipment is generally more affordable than alternatives like laser or plasma cutting, making it an excellent choice for small to medium-sized businesses.
Versatility: Capable of handling a broad spectrum of materials, from thin sheets to thick plates, flame cutting allows you to tackle a variety of projects with ease.
Speed and efficiency: This method excels in large-scale operations where time is of the essence, enabling you to process metals quickly and effectively.
Thick material processing: What truly sets flame cutting apart is its ability to handle thick materials-up to several feet-making it ideal for heavy-duty applications.
Portability: With just a few cylinders and a torch, flame cutting is easy to set up and use, particularly for fieldwork.
Application of Flame Gas Cutting Machine
Heavy industrial use
Heavy industries need a cutting solution as robust as their projects. Flame cutting is that solution. It's a powerhouse in sectors like shipbuilding and construction, where dealing with steel isn't just a task, it's the task.
Consider shipbuilding. Here, flame cutting plays a crucial role. It's how massive steel plates and sections are precisely shaped to build everything from the bow to the stern of giant ships.
In construction, think of skyscrapers and bridges. Flame cutting is front and center here, shaping the beams and girders that make up these structures. In this world of heavy steel, flame cutting is a go-to for its ability to handle tough jobs.
Thick material cutting
Where typical metal cutting methods falter, flame cutting steps in. It's all about handling the big stuff – thick steel plates that others find too challenging. This is where flame cutting shines, using intense heat to cut through even the thickest steel, especially carbon steel, known for its strength and resilience.
Imagine a scenario with really thick metal 6-300mm. Flame cutting is like the hero coming to the rescue. It heats metals to extreme temperatures, ideal for those hefty steel plates that need a firm hand.
In the domain of metal thickness, flame cutting is king, effortlessly dealing with a wide range of materials.
Customization and scalability
Metal fabrication isn't a one-size-fits-all business. Projects often require a personalized approach, and this is where flame cutting excels. It's versatile, adjusting to different sizes and thicknesses of metal with ease.
Components of CNC Flame Gas Cutting Machine
The CNC machine body gives the user something to hold cutting torch and acts as the CNC controller. It holds the torch and connects everything together. Think of it as the truck or the body's – without it, everything else is separated. The more stable is CNC machine body, the more stable moving.
Often made of copper alloy or a similar conductive metal, cutting torch and tips emit the flame that cuts the metal. Though it is referred to as cutting, the metal is being separated by an intense flow of oxygen or acetylene – it is a result of a chemical reaction, not a physical cutting.
The flame tube is a heat-resistant tube or container in which the flame begins in a cutting torch.
Control valves are gauges that the user can manipulate to adjust the amount of oxygen or acetylene flowing into the cutting torch flame. By turning these valves up or down and releasing more gas, the flame will get bigger and more intense, and vice versa. In our CNC flame cutting machines, the valves are controlled by CNC controller automatically.
The CNC flame cutting machine controller is equipped with an intelligent system, serving as the brain of the CNC cutting machine. The movement of the X, Y, and Z axes is generated and executed within this system. Additionally, it manages the operation of the machine-turning it on and off-as well as controlling the gas supply.
This system encompasses various functions; thus, it is essential to understand both its capabilities and those of the CNC flame cutting machine itself.
The gas regulators adjust the pressure of different gasses throughout the cutting process. The regulator allows users to adjust the gas to a pressure low enough to utilize a cutting torch safely.
Flame traps are safety mechanisms that prevent the flame from a cutting torch from traveling backward and reaching the fuel sources. Known as flashback flames, these can travel backward and cause injuries if they reach the oxygen or acetylene tanks.
Gas cylinders store the oxygen and acetylene that fuel the cutting torch. These cylinders are often color-coded and are at very high pressures to hold the maximum amount of fuel possible. These high-pressure levels can only be used with appropriate cutting torches. If a cutting torch isn't equipped to handle certain pressure levels maintained by a specific type of fuel gas cylinder, then users should avoid said cylinders.
Process of Flame Gas CNC Cutting Machine
CNC Oxy-fuel cutting is a moving controlled chemical reaction between pure oxygen and steel to form iron oxide. It can be described as rapid, controlled rusting. The oxy-fuel cutting torch with a flame is used to cut shapes out of plate steel.
Step1: Preheat
Before cutting the steel, the metal is to be heated up to its kindling temperature, about 1800°F with preheat flames. This makes the steel readily react with oxygen. An oxy-fuel torch is used to provide preheat flames to heat the metal.
Fuel gas is mixed with oxygen inside the torch to form a highly flammable mixture. The torch has a nozzle containing multiple holes designed in a circular pattern to focus the flammable gas mixture into multiple little jets. This fuel-oxygen mixture gets ignited outside the nozzle. The resulting preheat flame forms at the nozzle tip. Adjusting the fuel-to-oxygen ratio enables to adjust the preheat flame to produce the highest possible temperature in the smallest possible flame. This helps to concentrate the heat on a small area on the surface of the steel plate that is to be cut.
Step 2: Piercing
On application of preheat flame, the surface of the plate reaches kindling temperature (approximately 1800°F). Pure oxygen is then directed toward the heated area in a fine, high-pressure stream to pierce through the plate. This is known as ''cutting oxygen''.
When the cutting oxygen stream hits the pre-heated steel, a rapid oxidation process begins. The oxidized steel changes into molten slag. The slag needs to be removed to allow the stream of oxygen pierce through the plate. Depending on the plate thickness, the oxygen stream is pushed deeper into the plate. In the process, the molten slag gets blown out of the pierced hole.
Step 3: Cutting
When the oxygen stream pierces through the plate, the torch can be moved at a constant speed to form a continuous cut. The molten slag formed during the process is blown to the bottom of the plate.
The heat generated during the chemical reaction between the oxygen and the steel preheats the surface of the plate but just in front of the cut. However, this heat is inadequate to perform cut without preheat flame. Therefore, preheat flame is used throughout the cut to add heat to the plate as the torch moves.
How to Maintain Flame Gas Cutting Machine
Stand aside – When slowly opening the cylinder valve, always stand to the side of the regulator. In the (highly unlikely) event that the regulator fails, it would be most prone to fail in a manner that directs the force of the gas in the direction of the regulator bonnet and pressure adjustment (PA) knob. Then, open the oxygen cylinder valve all the way, but only open the acetylene valves one-half to one full turn. Open alternate fuel cylinder valves all the way.
Leak test – Use a wrench to tighten all metal-to-metal connections, including those between the gas hoses and the torch. Next, leak test these connections by saturating (not wetting, but saturating) them with leak test fluid and watching for growing bubbles. Use approved leak test solution.
Right size tip – For the best cut quality, use the right tip size for the metal thickness and adjust gas pressure according to the tip charts for your specific brand of cutting outfit. Note that flow rates may vary between brands, so refer to the tip chart if you're not familiar with a torch.
Pressure drop – When using narrow diameter and/or long lengths hose out side of CNC cutting machine, consider that the gas pressure will drop by the time it reaches the torch. Compensate for the pressure drop by increasing the regulator delivery pounds per square inch gauge (PSIG) to ensure gas pressure meets cutting tip requirements.
Keep machine clean – In whatever way possible, clean the oil moist, metal powder and other pollutants from guide rails and motors.
Ready to pierce – Before you can pierce steel with the CNC flame machine, you must ensure the steel has reached its kindling point. While a reddish-yellow color is a good indicator, you can confirm the temperature by slightly depressing the cutting oxygen lever. If the steel forms slag immediately, you can fully depress the lever. If not, release the cutting oxygen lever and maintain the preheat flame a little longer.
Spiral out – When piercing, start in the center and work outward toward your cutting path.
Torch height – Generally, hold height from the cutting torch of acetylene flame to the cutting surface. That said, keep the torch height.
Lead in, lead out – When cutting thicker metal, set "lead in" and "lead out line" into the cutting path or cut from the edge of the metal. This ways helps ensure a clean sever.
Trouble checking – If you have trouble during the CNC cutting, pause the cutting by CNC controller, lift the torch slowly to check, avoid to check at cutting.
Secured cylinders – It's all too easy to forget to secure cylinders when moving them around a job site. If you don't have a cylinder cart handy, try using a reinforcing column instead.
Oxygen first, fuel last – Victor recommends shutting off the torch oxygen valve, then closing the torch fuel valve. This technique leak checks both valves every time the torch is shut down. A snap or a pop indicates a leaking oxygen valve, while a small flame at the end of the tip indicates a fuel gas leak.
How Is Flame Cutting Performance Increased?
The choice of fuel type and nozzle selection make the CNC flame cutting process faster, which, in turn, reduces labour costs. While the oxygen jet determines the speed of a cut, the gas used in pre-heating also influences the initiation time of any cutting.
In most CNC flame cutting applications, oxygen will be mixed with a fuel gas – methane, MAPP, propylene, acetylene or propane – that pre-heats the metal to an ignition temperature. This temperature needs to be below the metal's melting point, but hot enough to cut the metal. Pure oxygen is then jetted over the preheated area so it burns through the metal. The speed of the oxygen flame then removes any molten metal and slag.
The choice of gas used in the process depends on the type of work carried out, and on the material type. For instance, acetylene has a flame temperature of 3160 degrees Celsius, making it ideal for thin sheet and bevel cutting. However, this gas costs more than other gases and does not generate much heat, so it is not suitable for the cutting of larger metal plates.
How Does Flame Cutting Work?
The process is a Thermo-Chemical Process requiring a source of intense heat, referred to as "Preheat", and pure oxygen. The pure oxygen requirement is of a 99.5% minimum purity, which is the minimum purity typically provided in cylinders and bulk systems. A reduction in purity of 0.1% will reduce cutting speed by about 10%, so one can see the necessity for purity.
While the source of the Oxygen may be pure, improper connections, bad hoses, or leaks of any sort can allow impurities in the system thereby reducing the cutting speed. The high purity of Oxygen presents a very dangerous situation and requires extreme care in the selection of equipment and the design of piping systems for its use. There are numerous documents available to assist with these safety issues. Federal Law (OSHA) presents numerous requirements for the equipment to be used, as well as the procedures to be followed.
Our Factory
Hubei Meisar CNC Technology Co., Ltd international department have oversea branches distribute in China Taiwan, India, Malaysia, Mexico etc. The High quality cutting equipment had been used all over the world, say, German, Chinese Taiwan, USA, Russia, India, Indonesia, Thailand etc, the application involved machine tools, machinery, ships, chemical, petroleum, and other fields.
FAQ
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Flame gas CNC cutting machine gantry type MS-G |
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Effective Cutting Width (X) |
2.0m-10.0m |
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Effective Cutting Length (Y) |
4.0m+(can be lengthened) |
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Cutting model |
Flame (oxygen and propane gas or Acetylene gas, liquid oil gas gas...) |
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Cutting Material |
Carbon steel |
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Optional item |
Plasma cnc cutting heads; Flame cnc cutting heads; Flame strip cutting heads. Oxygen busbar, fuel gas busbar. Operating chair. |
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