Introduction of technical data of metal laser cutting machine for sheet metal processing

The metal laser cutting machine has a very good effect on sheet metal processing. Now we will introduce some technical information about the metal laser cutting machine in sheet metal processing, hoping to help you in your production work.　　 One of the advantages of using a laser cutting machine is the high energy density of the beam, generally>10W/cm2. Since the energy density is proportional to 4/u0026pi;d2, the focal spot diameter is as small as possible to produce a narrow slit; at the same time, the focal spot diameter is also proportional to the focal depth of the lens. The smaller the focal depth of the focusing lens, the smaller the focal spot diameter.　　 But there are splashes in cutting, and the lens is too close to the workpiece to damage the lens. Therefore, the focal length of 5〃～7.5〃(127～190mm) is widely used in general high-power CO2 laser cutting industrial applications. The actual focal spot diameter is between 0.1 and 0.4mm. For high-quality cutting, the effective focal depth is also related to the lens diameter and the material being cut. For example, cutting carbon steel with a 5' lens, the focal depth is within +2% of the focal length, which is about 5mm.　　 Therefore, it is very important to control the position of the focus relative to the surface of the material to be cut. Taking into account factors such as cutting quality and cutting speed, in principle, the focus is on the surface for metal materials <6mm; the focus is on the surface for carbon steel>6mm; the focus is on the surface for stainless steel>6mm. The specific size is determined by experiment. The method of using a metal laser cutting machine to determine the focus position is as follows: 　　1. Printing method: The cutting head is moved from top to bottom, and laser beam printing is performed on the plastic plate, with the smallest printing diameter as the focus.　　2. Inclined plate method: Use a plastic plate placed obliquely at an angle to the vertical axis to pull it horizontally to find the smallest point of the laser beam as the focus.　　3. Blue spark method: remove the nozzle, blow air, hit the pulse laser on the stainless steel plate, and make the cutting head move from top to bottom until the largest blue spark is the focus.　　 Wuhan Gaoneng Laser Equipment Manufacturing Co., Ltd. is a high-tech enterprise integrating Ru0026D, production and sales of professional laser complete sets of equipment. Not only successfully developed laser equipment with advanced technology, but also used self-support import and export rights to promote products to more than 40 global markets including Hong Kong, South Korea, Vietnam, Malaysia, Thailand, Australia, the United States, Japan, Germany, the Netherlands, Jordan, etc. nation.