Laser cutting machine has become the mainstream of sheet metal processing

Hongte plate and tube integrated laser cutting machine

Sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, and good mass production performance. It is obtained in the fields of electronics, communications, automotive industry, medical equipment, etc. For a wide range of applications, for example, in computer cases, mobile phones, MP3, sheet metal is an indispensable part. Traditional sheet metal cutting equipment occupies a considerable market share in the market. In addition to the reasons they are familiar with, the main reason is that they are cheap. Although they have obvious disadvantages compared to modern processes such as laser cutting, they also have their own unique advantages.

CNC shearing machine

Because the CNC shearing machine is mainly straight-line cutting, although it can cut a sheet of 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.

Punch

The punching machine has more flexibility in curve processing. A 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. 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 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 plate is not high when punching and shearing, and the other is that punching thick steel plates requires a larger tonnage punch, which wastes resources. The noise when punching thick steel plates is too loud, which is not conducive to environmental protection.

Flame cutting

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

Plasma cutting

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, becoming 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, 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 inclination is also large, there is nothing that can be done when the accuracy is high, and the consumables are more expensive.

High pressure water cutting

High pressure water cutting is the use of high-speed water jet doped emery to cut sheet metal. It has almost no restrictions on the material, and the cutting thickness can almost reach more than 100mm. It uses thermal cutting for ceramics, glass, etc. Materials that are prone to bursting can also be cut. Copper, aluminum, etc. can be cut with high-reflective laser materials with waterjets, but laser cutting has greater obstacles. The disadvantage of water cutting is that the processing speed is too slow, too dirty, not environmentally friendly, and high consumables.

Laser cutting

Laser cutting is a technological revolution in sheet metal processing and 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; it has narrow slits, good cutting quality, high degree of automation, and operation Simple, low labor intensity, no pollution; automatic cutting and nesting can be realized, the material utilization rate is improved, the production cost is low, and the economic benefit is good. The technology has a long effective lifespan. 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 age of laser processing technology development (the direction of sheet metal processing development) .

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