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Laser cutting machine and traditional CNC equipment in sheet metal processing

Laser cutting machine and traditional CNC equipment in sheet metal processing

With the application of laser cutting machines, sheet metal processing technology has been developed rapidly, and has brought a revolutionary concept to sheet metal processing. As a traditional sheet metal cutting equipment, mainly numerical control equipment, including shears, punches, flame cutting, https://aluminum-reflector.complasma cutting, high-pressure water cutting, etc., what are the advantages of laser cutting machines compared to it? Let us introduce to you one by one.

(Numerical Control) Shearing Machine is mainly straight-line cutting. Although it can cut sheets up to 4 meters in one cut, it can only be used for sheet metal processing that only requires straight-line cutting. It is generally used in industries that only need straight cutting, such as cutting after flattening the plate.

(Numerical control/turret) The punching machine has more flexibility in curve processing. One punching machine can have one or more sets of square, round or other special requirements punches, and some specific sheet metal workpieces can be processed at one time , The most common is the cabinet industry, the processing technology they require is mainly straight line, square hole, round hole and other cutting, the pattern is relatively simple and fixed. They are mainly facing carbon steel plates below 2mm, and the format is generally 2.5m×1.25m. Stainless steel with a thickness of more than 1.5mm requires a mold because of its high viscosity. Generally, a punch is not used. Its advantage is the fast processing speed for simple graphics and thin plates. The disadvantage is that the ability to punch thick steel plates is limited. Even if it can be punched, the surface of the workpiece is collapsed, which costs molds, long mold development cycles, high costs, and insufficient flexibility. The cutting and processing of steel plates over 2mm in foreign countries generally uses more modern laser cutting instead of punching machines. One is that the surface quality of thick steel plates is not high when punching and cutting, and the other is that punching thick steel plates requires a larger tonnage punch, which wastes resources. The noise is too large when punching thick steel plates, which is not conducive to environmental protection.

Laser cutting machine and traditional CNC equipment in sheet metal processing

Flame cutting is the original traditional cutting method due to its low investment. In the past, the processing quality requirements were not high. When the requirements are too high, a machining process can be added to solve the problem, and the market is very large. Now it is mainly used to cut thick steel plates over 40mm. Its disadvantage is that the thermal deformation is too large during cutting, the slit is too wide, and the material is wasted. Moreover, the processing speed is too slow, which is only suitable for rough processing.

Plasma cutting and fine plasma cutting are similar to flame cutting. The heat-affected zone is too large, but the accuracy is much greater than that of flame cutting. The speed is also an order of magnitude leap, and it has become the main force in plate processing. The actual cutting accuracy of the top domestic CNC fine plasma cutting machine has reached the lower limit of laser cutting, reaching a speed of more than 2 meters per minute when cutting 22mm carbon steel plates, and the cutting end surface is smooth and flat,https://sandcasting.top and the slope is the best. Control within 1.5 degrees, the disadvantage is that the thermal deformation is too large when cutting the thin steel plate, the slope is also large, there is nothing to do when the precision is high, and the consumables are more expensive.

High-pressure water cutting is the use of high-speed water jet doped with emery to cut sheet metal. It has almost no restrictions on the material, and the cutting thickness can almost reach more than 100mm. It is also suitable for materials that are easy to burst when hot cutting is used for ceramics, glass, etc. It can be cut. Copper, aluminum, etc. can be cut by water jets for high-reflective laser materials, but laser cutting has a big obstacle. The disadvantage of water cutting is that the processing speed is too slow, too dirty, not environmentally friendly, and high consumables.

Laser cutting is a technological revolution in sheet metal processing, and it is the “processing center” in sheet metal processing. Laser cutting has a high degree of flexibility, fast cutting speed, high production efficiency, and short product production cycle, which has won a wide range of markets for customers. Laser cutting has no cutting force, no deformation in processing; no tool wear, good material adaptability; no matter simple or complex parts, it can be cut with laser precision and rapid forming at one time; its cutting seam is narrow, cutting quality is good, and the degree of automation is high, and the operation Simple, low labor intensity, no pollution; automatic cutting and nesting can be realized, the material utilization rate is improved, https://sheetmetal.top/the production cost is low, and the economic benefit is good. The technology has a long effective life. At present, laser cutting is used for most of the 2mm superstructured plates abroad. Many foreign experts agree that the next 30-40 years will be the golden period of laser processing technology development (the direction of sheet metal processing development) .