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5 Reasons Of Using Metal Tube Laser Cutting Machine

Views: 0     Author: XDLASER     Publish Time: 2021-11-04      Origin: XDLASER

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5 Reasons Of Using Metal Tube Laser Cutting Machine

Development of metal tube?

The development of steel pipe production technology began with the rise of bicycle manufacturing industry, the development of oil in the early 19th century, the manufacturing of ships, boilers and aircraft during the two world wars, the manufacturing of thermal power boilers after the Second World War, the development of chemical industry and the drilling, production and transportation of oil and natural gas, which have effectively promoted the development of steel pipe industry in variety Development in yield and quality.

Steel pipe is not only used for conveying fluid and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, but also an economic steel. Using steel pipe to make building structure grid, pillar and mechanical support can reduce weight, save metal by 20 ~ 40%, and realize industrialized and mechanized construction. Manufacturing Highway Bridges with steel pipes can not only save steel and simplify construction, but also greatly reduce the area of protective coating and save investment and maintenance costs.

fiber laser cutting samples (106)


What can I use to cut a metal tube?

1. High pressure water jet cutting

This new technology uses a 0.80 ~ 1.50mm water jet with a jet speed of 600 ~ 800 m / S (speed greater than Mach 2). The water pressure is 3000 ~ 4000 bar, and the water consumption is only 4 liters per minute.

In order to cut stainless steel with abrasive such as alumina or silicon carbide, abrasive particles are injected into the water flow before the jet water reaches the steel. Modern equipment can cut 20.0mm thick stainless steel. The cutting edge shall be accurate and the cutting surface shall be clean and smooth.

The heat generated by cutting is taken away by water, and the metal temperature is only 50 ~ 60 ℃. In this way, combined with the force generated by the jet water on the metal, the deformation can be prevented and the cutting accuracy can be improved.

2. Stepping blanking

This process uses round and triangular punches to punch out a series of overlapping holes. Obviously, this process can not make the incision very smooth, but by using good tool design and overlapping the incision, the cutting edge can meet the requirements of most applications. Portable stepping blanking machine is usually used to cut carbon steel sheet. If it is used to cut austenitic stainless steel, it needs to increase the force by 60%. Moreover, the maximum thickness cut by the machine should also be reduced. The machine in the processing plant can punch 8mm stainless steel at least. Modern machines can also use the combination of shear and punching to produce the required blanks.

3. Guillotine cutter

Most processing plants use this hand-operated shear. The blade length of this shear can reach 3M, but if the end of the shear is open, a notch longer than the shear blade can be obtained by continuous shear. But be careful not to cut the steps.

Due to the large power required for shearing stainless steel, the thickness that the shear can shear when shearing mild steel shall be reduced by two wire gauge numbers when shearing ferritic steel and four wire gauge numbers when shearing austenitic stainless steel. Therefore, a shear that can shear 2mm mild steel at most should be reduced to less than 1.6mm for ferritic steel and less than 1.2mm for austenitic steel, and the shear edge clearance should be reduced accordingly. The typical shear edge clearance for austenitic stainless steel is 5%.

Most processing plants know the importance of firmly clamping the steel plate and keeping the blade in good condition during shearing. However, people who have just come into contact with stainless steel may not know that in order to prevent pollution to the surface of stainless steel, protective pads need to be placed on the workbench of guillotine shear or other places in contact with carbon steel. If the guillotine shear also cuts carbon steel, it is best to check the blade before cutting stainless steel to remove carbon steel particles that may adhere to and contaminate stainless steel.

4. Disc shear

The basic working principle of disc shear is the same as that of guillotine shear, but continuous shear can be carried out by using disc blade. Steel mills use several blades on two shafts to cut wide coils longitudinally. However, a pair of blades can also be used to cut a single straight bar. Some shears can also move the blade to one side to cut wedge-shaped blanks, while others can rotate the cutter to cut circular blanks.

5. Saw

Although narrow sheets can be cut with bow saws and band saws, these two saws are usually used to cut medium and thick plates, sections and pipes.

Austenitic stainless steel will be cold worked and hardened. Friction is strictly prohibited. This is very important and must be paid attention to. Therefore, lift the saw during the return journey of the saw. The high-speed tool hacksaw blade has 8 to 10 teeth per inch when sawing thick materials, 24 to 32 teeth per inch when sawing thin plates and pipes, 50 / 80 times per minute when cutting austenitic stainless steel and 100 / 200 times per minute when cutting ferritic stainless steel. When cutting on a conventional band saw, use sharp sawteeth, low speed and uniform small feed to keep the cutting of the saw blade.

6. Grinding wheel cutting

This method uses high-speed rotating grinding wheel to cut steel. Grinding wheel is made by bonding abrasive with fiber, resin or rubber. In skilled manual operation, the grinding wheel can cut quickly and accurately, and the cutting is neat and burr free. Only linear cutting can be carried out with grinding wheel, but this is sufficient for most purposes.

Grinding wheels are usually used to cut pipes. Processing plants also use grinding wheels to grind non-linear grooves.

Hand operated grinder is usually used for on-site repair. However, a large amount of dust and "steel chips" are generated when using the hand-operated grinder, so dust removal or protection devices are required. The grinder used in the production plant is generally equipped with a cooling system, which can not only reduce dust, but also prevent thermal damage to materials.

7. Laser cutting

This technology uses the energy released when the laser beam irradiates the steel plate surface to melt and evaporate the stainless steel. The laser source generally uses a carbon dioxide laser beam with a working power of 1000 ~ 8000 watts. This power level is lower than that required by many household electric heaters. However, the laser beam is concentrated in a very small area through the lens and mirror. The high concentration of energy can be carried out quickly In addition, because the energy is very concentrated, only a small amount of heat is transmitted to other parts of the steel, resulting in little or no deformation. The blank with complex shape can be cut very accurately by laser, and the cut blank does not need further treatment.

Stainless steel less than 4mm can be cut by laser cutting equipment. Stainless steel with a thickness of 8 ~ 10mm can be cut by adding oxygen to the laser beam, but a thin oxide film will be formed on the cutting surface after oxygen cutting. The maximum thickness of cutting can be increased to 16mm, but the dimensional error of cutting parts is large.

The price of laser cutting equipment is quite expensive, about more than 150 US dollars. However, due to the reduction of the cost of subsequent process treatment, it is still feasible to use this equipment in large-scale production. Since there is no cutting tool processing cost, laser cutting equipment is also suitable for producing small batches of parts of various sizes that can not be processed. At present, laser cutting equipment is usually calculated Computerized digital control technology (CNC) device. After using this device, the cutting data can be received from the computer aided design (CAD) workstation by using the telephone line.

8. Plasma arc cutting

This method is to pass the mixed gas through the high-frequency arc. The gas can be air or a mixture of hydrogen, argon and nitrogen. The high-frequency arc "decomposes" or ionizes some gases into basic atomic particles, resulting in "plasma" "。 Then, the arc jumps onto the stainless steel workpiece, and the high-pressure gas blows the plasma out of the cutting torch burner. The outlet speed is 800 ~ 1000 meters per second (about Mach 3). In this way, the high energy released when various gases in the plasma return to the normal state produces a high temperature of 2700 ℃. This temperature is almost twice the melting point of stainless steel. Thus, the stainless steel melts rapidly, and the molten metal is blown away by the ejected high-pressure air flow. Therefore, smoke exhaust and slag removal equipment are required.

This method can be used to cut 3.0 ~ 80.0mm thick stainless steel. The cutting surface is oxidized, and the notch is shaped like an eight due to the characteristics of plasma.

9. Manual shearing

Using the conventional manual shear, if the cutting edge is sharp, it can cut stainless steel less than 0.9mm. However, due to the short shear length of each shear, the steel plate is easy to curl and the quality of trimming is poor. It is not recommended to use manual shears for shearing unless the appearance requirements of trimming are not high or irregular trimming does not hinder the next process (such as difficult to align the weld, etc.).

Most methods of cutting carbon steel can be used to cut stainless steel. However, due to the greater strength of stainless steel and stronger cold hardening reaction, the power required for cutting by mechanical method is greater, and the maximum cutting thickness of the machine is reduced.

Stainless steel cannot burn when cut with oxyacetylene, but powder can be sprayed into the flame as a heat source. However, when the powder burns, it will produce a lot of smoke. Carbon arc welding torch can be used to burn holes in stainless steel, but the cutting edge is irregular and needs to be trimmed in most cases。


What is the best method for cutting tubes?

Now, the best way method for cutting tube is by laser cutting.


What is metal tube laser cutting machine?

There are laser cutting machines in construction machinery, decoration, furniture and household appliances, tramcars, fitness equipment and other industries. The application of laser pipe cutting machine in stainless steel industry has begun very early. So what is the principle of laser pipe cutting machine? What are the types?

The main working principle of the laser cutting machine is to use the laser beam emitted by the laser to generate heat energy, cooperate with the moving mechanical system to realize the pipe cutting, and the intelligent system controls the pipe cutting, which can improve the production efficiency.

Laser pipe cutting machines mainly include: three chuck laser pipe cutting machine, full-automatic laser pipe cutting machine, semi-automatic laser pipe cutting machine, manual laser pipe cutting machine, etc.

Among them, these laser cutting machines can cut square tubes, round tubes and special-shaped tubes made of metal materials such as stainless steel tubes, carbon steel tubes, iron tubes, seamless tubes and galvanized tubes, and can realize various process processing of tubes, such as cutting, chamfering, opening, 45 degree cutting, etc.

The full-automatic laser pipe cutting machine can cut off professionally, automatically load and unload materials and automatically remove internal slag. It has two styles: binding automatic feeding and pipe cutting machine and arranged automatic feeding and pipe cutting machine, which can cut pipes easily without manual intervention.


5 Advantages of Metal Tube Laser Cutting Machine:

(1) Good cutting quality. The width of the notch is narrow (generally 0.1-0.5mm), the accuracy is high (generally the error of hole center distance is 0.1-0.4mm, the error of contour dimension is 0.1-0.5mm), and the roughness of the notch surface is good (generally RA is 12.5-25) μ m) Generally, the cutting seam can be welded without further processing.

(2) Fast cutting speed. For example, with 2kW laser power, the cutting speed of 8mm thick carbon steel is 1.6m/min; The cutting speed of 2mm thick stainless steel is 3.5m/min, with small heat affected zone and minimal deformation.

(3) Clean, safe and pollution-free. The working environment of operators is greatly improved. Of course, in terms of accuracy and notch surface roughness, CO2 laser cutting cannot exceed EDM; In terms of cutting thickness, it is difficult to reach the level of flame and plasma cutting. However, the above significant advantages are enough to prove that CO2 laser cutting has replaced and is replacing some traditional cutting methods, especially the cutting of various non-metallic materials. It is an advanced processing method with rapid development and increasingly wide application.

(4) Non contact cutting. During laser cutting, the cutting torch has no contact with the workpiece and there is no tool wear. To process parts with different shapes, it is not necessary to change the "tool", but only to change the output parameters of the laser. The laser cutting process has the advantages of low noise, small vibration and no pollution.

(5) There are many kinds of cutting materials. Compared with oxyacetylene cutting and plasma cutting, there are many kinds of laser cutting materials, including metal, non-metal, metal matrix and non-metal matrix composites, leather, wood and fiber. However, different materials show different laser cutting adaptability due to their different thermophysical properties and laser absorptivity.


How Long Tube Can Metal Tube Laser Cutting Machine Cut?

There are 3m 6m 9m long metal tube laser cutting machines. It means, you can cut 3m 6m or 9m tube.


How Many Diameter Tube Can Laser Cutting Machine Cut?

There is a truck on laser cutting machine. The diameter of the truck depend the diameter of tube the laser cutter can cut. Normally, the diameter is 20mm to 165mm, 20mm to 200mm or 20mm to 300mm optional. You can choose the most suitable truck for your tubes.


How do you cut a thin metal tube?

1. Plasma cutting automatic plasma cutting machine is fast, but there is a large amount of molten and cooled metal residue on the inner wall, which is very troublesome to clean. Most plasma cutting needs heating, so the pipe port must be discolored, and it is difficult to adjust the parameters. Improper use is easy to cause poor cutting quality. Now few users use plasma cutting machine to cut thin-walled stainless steel pipe.

2. Automatic hob pipe cutting machine has only circumferential cutting edge and no sawtooth. Feed inward while rotating, the notch is flat and smooth, without iron filings and burrs, and the inner wall is slightly closed. With special tooling, the closing phenomenon can be greatly improved, and the equipment cost is low, which is the most suitable choice for small and medium-sized enterprises. When cutting a stainless steel pipe with a wall thickness of 0.3mm, it will tear at the moment when it is about to be cut, and the pipe orifice will be seriously deformed. When cutting a large-diameter thin-walled stainless steel pipe, special devices need to be added to ensure that the cutting does not deform, which has high technical requirements for operators.

3. For cutting very thin-walled stainless steel pipes (wall thickness 0.2 ~ 0.6mm, diameter range below 32mm), the instrument lathe recommends the use of high-quality white steel or front steel cutting tools. The cutting tools are low-cost, but they are relatively durable, the cutting surface is very flat, and there is no water for cutting. They are suitable for cutting pipe fittings of household products, such as mop pipes, broom pipes and mosquito net pipes. This method has a low degree of automation, High labor intensity. Suitable for cutting small diameter round pipe. At present, the cutting efficiency of the instrument cutter and pipe cutter will be greatly improved and the labor intensity of the operators will be reduced.

4. In addition, there is a similar automatic instrument lathe, but the tool rotates and feeds, and the pipe does not move, which solves the inconvenience caused by the rotation of over length steel pipe. The cutting method of simultaneous processing with two knives can be used to cut with one knife and correct the steel pipe section with the other knife, but this cutting method is also only suitable for small batch cutting.

5. Saw blade cutting: at present, the saw blade used to cut thin-walled stainless steel pipe is generally tungsten steel saw blade cutting. Combined with the automatic feeding system set by NC, it has high degree of automation, simple operation and low labor intensity. One person can operate multiple machines at the same time. When cutting thin-walled stainless steel pipe, the cutting speed is fast, the incision is not deformed and burr free, and the cutting precision is high Field test cutting 19 * 0.3 * 200mm pipe fittings, with an output of more than 8000 pieces per 10 hours. It is a pipe cutting machine very suitable for cutting large quantities of thin-walled pipe fittings.



Metal tube laser cutting machine is getting more and more popular because of all the above reasons. It cuts both round tube and square tubes, more and more factories are choose laser cutting machine for cutting there tubes.


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