Application of laser cutter in pipe cutting
27 Jan , 2021
The corresponding cutting technology has also been rapidly developed. The emergence of the laser cutter integrates the plate and tube and has one machine, which greatly improves the productivity.
Technological innovation is gradually pushing society forward. From the previous semi-manual to today's fully automatic, step-by-step growth tells us the development process. In the industry 4.0 era, with the rapid growth of my country's metal industry production and consumption, the corresponding cutting technology has also been rapidly developed. The emergence of the laser cutter
integrates the plate and tube and has one machine, which greatly improves the productivity.
High efficiency: The work efficiency of the industry has increased by several percentage points compared with before, which greatly improves the utilization rate of pipelines and reduces the waste of materials. It realizes the integration of pipe cutting technology, effectively shortens the time of the manufacturing process, and brightens the development prospect of the industry.
Accuracy: Compared with traditional flame cutting, water cutting and other processing equipment, the accuracy of the tube laser cutter is much higher.
Flexibility: How is fiber laser cutter called flexibility? That is to say, how to cut it? It can cut programmed shapes on stainless steel, and the laser can complete the cutting along the direction. Whether it is a plate or a tube of different shapes, it can be easily controlled.
Fiber laser cutter is a different separation plate or tube laser cutter. The overall machine cutting speed of pipe fittings is fast, the cutting width is small, and the processing quality is high. It has dual cutting functions for sheets and tubes, and can realize fully automatic feeding and cutting processing.
Dual-purpose fiber laser cutter for the sheet and tube industry:
Widely used in sheet metal processing, aviation, aviation, electronics, electrical, high-speed railway, subway accessories, auto parts processing, food machinery, textile machinery, engineering machinery, precision parts, ships, metallurgical equipment, elevators, household appliances, kitchen supplies , Tool processing, decoration, advertising and other metal material processing and manufacturing industries.
The main feature of the plate and tube fiber laser cutter is to reduce the floor area and reduce the investment cost. It is an ideal choice for users' double cutting requirements for plates and tubes. Adopt advanced brand fiber lasers and electronic components to ensure the ultra-stability of the equipment. The vertical pipe cutting device provides a dual cutting function for plates and pipes. The utility model is convenient for collecting and cleaning sundries and small workpieces.
It can cut stainless steel, carbon steel, galvanized sheet, aluminum sheet, copper, brass and other metal materials with high speed and high precision. It is also suitable for cutting square tubes, round tubes, rectangular tubes, elliptical tubes, oblate tubes, slotting, punching, cutting patterns, and cutting intersection lines (any angle). Compared with ordinary fiber laser cutters, it can greatly reduce The loss of machine tools.
What is the relationship between the speed of the fiber laser cutter
and the cutting effect?
In the heavy metal processing industry, many metal materials, regardless of their hardness, can be cut without deformation. Of course, for high-reflectivity materials, such as gold, silver, copper, and aluminum alloys, they are also good heat transfer conductors, so laser cutting is very difficult or even impossible. From the point of view of the laser cutter itself, too fast speed will increase the wear of the belt and synchronous wheel. The speed of the laser cutting machine varies with factors such as beam power, beam pattern, spot size, material density, energy required for gasification, and material thickness.
In the laser cutting process, the most ideal solution can only be obtained by combining the structural design of the cutter and the precision requirements of the cutting material. In the steel cutting process, oxygen is used as an auxiliary material to produce an exothermic chemical reaction and oxidation between the steam and the molten metal, and it also helps to blow away the slag in the slit. For cutting polypropylene, compressed air is used, and inert gas is used for cutting cotton, paper and other flammable materials. The auxiliary steam entering the nozzle can also cool the focusing lens, preventing smoke from entering the lens base, contaminating the lens, and causing the lens to overheat.
Laser cutting has the advantages of no burrs, no wrinkles, and high precision, which is better than plasma cutting.
When the cutting speed of the fiber laser cutter is too fast, the cut-off time of the laser beam and the material to be cut is too short. From the perspective of cutting effect, insufficient cutting energy causes the phenomenon that cutting materials cannot be cut.
For many electromechanical manufacturing industries, modern laser cutting systems controlled by computer programs can easily cut workpieces of different shapes and sizes, so they are often better than punching and molding; although the processing speed of laser cutting is slower than that of punching dies, It has no mold consumption, no need to repair molds, and saves time for mold replacement, thereby saving processing costs, reducing production costs, and overall cost-effectiveness.
When the cutting speed of the laser cutter is too slow, the cutting energy per unit area is too large, and the interaction time between the material and the laser increases, and burning and burning will occur.
When the cutting speed is too low, because the cutting site is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode point or anode area must find a conductive current position near the cutting seam closest to the arc, and at the same time transfer more heat In the radial direction of the jet, the incision is enlarged, and the molten material on both sides of the incision gathers and solidifies at the bottom edge, forming a slag that is difficult to clean. Due to excessive heating and melting, the upper edge of the incision is round.
Appropriately increasing the cutting speed can improve the quality of the cut, that is, the cut is slightly narrower, the cut surface is smooth, and the deformation is reduced. When the speed is very low, the arc may even go out due to the wide cut. Therefore, good cutting quality and cutting speed are inseparable. The cutting speed is too fast to make the cutting line lower than the required value. The jet in the cutting seam cannot blow off the cutting fluid immediately, forming a great resistance. As the dross on the incision increases, the surface quality of the incision decreases.
In fact, the choice of cutting speed of fiber laser cutter
is also very important. Determine the best cutting speed range according to equipment instructions or experiments. Due to the thickness of the material, different materials, melting point, thermal conductivity and surface tension after melting, the cutting speed also changes.