Existem muitos fatores que afetam a precisão do corte de máquina de corte de tubos a laser. Especificamente, existem os seguintes motivos principais:
1. A forma do feixe de laser
O feixe do laser é cônico, então o corte da fenda também é cônico, neste caso, a espessura de corte do aço inoxidável de 0,6 MM será menor que a fenda de 3 MM. Portanto, o formato da velocidade da luz laser será um fator importante que afeta a precisão de corte da máquina de corte a laser para tubos de metal. Nessas condições de velocidade da luz do laser em forma de cone, quanto maior a espessura da peça de trabalho, menor será a precisão.
2. O tamanho do ponto do feixe de laser
O tamanho do ponto também é um dos fatores que afetam a precisão de corte da máquina de corte a laser de tubos. Quando o laser em forma de cone foca junto, o ponto ficará cada vez menor, maior será a precisão do corte a laser. O menor ponto pode ter até 0,01 mm, pode cortar a pequena lacuna de corte, para garantir a precisão do processamento.
3.Os diferentes materiais do tubo
Different materials pipe laser cutting machine cutting accuracy is also less different, even the same material, if the composition of the material is different, the cutting accuracy will also be different. Therefore, the workpiece material on the pipe laser cutting accuracy also has a certain impact. For example, under the same circumstances, stainless steel has higher cutting accuracy and smoother cutting surface than aluminum.
Generally speaking, different pipes to be cut have different physical and chemical properties.
In terms of physical properties, the pipes to be cut vary in terms of hardness, melting and boiling points, and whether they are easy to melt. In terms of chemical properties, such as the flammability, stability, oxidation, and combustion-supporting properties of the pipes to be cut, there are also great differences. This makes the different pipes to be cut different in terms of the size of the chuck, the type and pressure of the auxiliary gas. And the requirements such as laser cutting power are different.
Under normal circumstances, the greater the thickness of the pipe to be cut, the higher the laser cutting power required. When cutting pipes of special materials such as aluminum pipes, copper pipes, stainless steel pipes, and even pipes made of materials with excellent oxidation resistance, as well as pipes of special shapes such as special-shaped pipes, H-shaped steel, channel steel, and angle steel, the laser The cutting power, the choice of auxiliary gas type, and the performance of the chuck itself also have different requirements. When cutting and processing lengthened and weighted pipe fittings, in addition to considering laser power and auxiliary gas, the selection of supporting components must also be considered to ensure the accuracy of the entire cutting process.
4. Espessura da peça
Quanto maior a espessura da peça, menor será a precisão e maior será a fenda. Como o feixe de laser é cônico, a fenda de corte também é cônica. Por exemplo, a folga de corte de um material com espessura de 0,3 mm é muito menor do que um material com espessura de 2 mm.
5. Escolha do sistema de corte
For hardware to fully play its role, suitable software assistance is needed, such as an excellent pipe cutting system. The more popular pipe cutting systems on the market now include cutting systems independently developed by FS, Siemens, Beckhoff or companies. Different systems support different cutting methods, pipe shapes, and number of chucks. For example, FSCUT’s system supports offset tube center error in production to improve through holes cutting precision. Excellent tube cutting software is one of the necessary factors to achieve high precision.
6.Seleção de gás auxiliar
When the laser cutting machine is working, the light spot formed by focusing the laser beam through the lens is irradiated on the surface of the material to be cut, causing the temperature to rise in a very short time, thereby reaching the melting point or boiling point of the material to be cut. During the cutting process, the surface of the material to be cut can reflect the laser to a certain extent. During cutting, auxiliary gas can be blown to increase the absorption of the laser by the surface of the material to be cut and improve cutting efficiency. Auxiliary gases generally use oxygen, nitrogen, compressed air and other inert gases.
Oxygen is commonly used as an auxiliary gas because oxygen promotes the oxidation reaction on the surface of the pipe being cut, thereby improving cutting efficiency. When the laser cutting power and cutting speed are constant, the greater the oxygen pressure, the larger the cutting seam, and the cutting section stripes will be thicker and larger; when the oxygen pressure is reduced, the cutting seam becomes thinner, and the cutting section stripes are thin and smooth, but when When the pressure drops to a certain value, the cutting effect on one side of the pipe will be significant, but at the same time, slag will appear. The slag falling to the opposite side will affect the entire cutting accuracy, and sometimes it will even be difficult to cut off the cut pipe.
When cutting high-thickness pipes, special-shaped pipes or pipes of special materials, nitrogen and other inert gases need to be used as auxiliary gases. Combined with the metal and physical properties of the pipe being cut, compressed air can be selected as the auxiliary gas in order to control costs without affecting the overall cutting efficiency.
7. Resumo
Em geral, os fatores que afetam a precisão do corte de tubos são complexos. Portanto, os compradores devem escolher fabricantes de máquinas de corte de tubos a laser com qualidade confiável e experiência madura, expressar ativamente suas necessidades e fornecer informações detalhadas durante o processo de aquisição. Somente selecionando um bom equipamento de hardware a estabilidade da precisão do corte pode ser garantida.
