With the rapid development of precision sheet metal processing technology, the processing technology in the Yangtze River Delta market is also changing with each passing day, and the gap with foreign developed countries is getting smaller and smaller. Many well-known foreign-funded enterprises have moved their manufacturing bases to China. Sheet metal processing has brought many revolutionary ideas.

As the traditional sheet metal cutting equipment, there are (NC and non-NC) shearing machines, punching machines, flame cutting, plasma cutting, high pressure water cutting and so on. These devices occupy a considerable market share in the market, one is well-known, and the other is cheap. Although their disadvantages are very obvious compared to modern processes such as laser cutting, they also have their own unique advantages.

(CNC) Shearing machine is mainly used for straight-line cutting. Although it can cut plates up to 6 meters long, it can only be used in precision sheet metal processing that only requires straight-line cutting. It is generally used in industries where only straight-line cutting is required after the sheet is flattened.

(CNC / 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 required punches, which can process some specific sheet metal workpieces 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, and the pattern is relatively simple and fixed. They mainly face carbon steel plates under 2mm, and the width is generally 2.5m × 1.25m. For stainless steel with a thickness of more than 1.5mm, it is more expensive to mold because of the material viscosity is too high, generally do not use a punch. The advantage is that the processing speed of simple graphics and thin plates is fast. 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 requires molds, mold development cycles are long, the cost is high, and the degree of flexibility is not high enough. The cutting of steel plates over 2mm in foreign countries generally uses more modern laser cutting instead of punching machines. One thick steel plate has low surface quality during punching and shearing, and the other is that punching thick steel plates requires a larger tonnage punching machine, which wastes resources. When the thick steel plate is punched, the noise is too large, which is not conducive to environmental protection.

Flame cutting as 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, it can be solved by adding a machining process, and the market has a very large holding amount. Now it is mainly used to cut thick steel plates over 40mm. Its disadvantage is that the thermal deformation during cutting is too large, the slit is too wide, the material is wasted, and the processing speed is too slow, only suitable for rough machining.

Plasma cutting and fine plasma cutting are similar to flame cutting. The heat-affected zone is too large, but the accuracy is much larger than flame cutting. The speed also has an order of magnitude leap, and has become the main force of medium plate processing. The actual cutting accuracy of the domestic CNC fine plasma cutting machine has reached the lower limit of laser cutting. When cutting 22mm carbon steel plate, it reaches a speed of more than 2 meters per minute, and the cutting end is smooth and flat, and the slope can be controlled at 1.5 Within the degree, the disadvantage is that the thermal deformation is too large when cutting the thin steel plate, and the slope is also large. When the accuracy requirements are high, there is nothing to do, and the consumables are more expensive.

High-pressure water cutting is the use of doped emery in high-speed water jets to cut sheet metal. It has almost no restrictions on the material, and the thickness of the cutting can be almost 100mm or more. It is also easy to damage materials such as ceramics and glass. Can be cut, copper, aluminum, etc. can be cut by high-reflective materials such as waterjet, 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 the consumables are also higher.

Laser cutting is a technological revolution in precision sheet metal processing and a "machining center" in precision sheet metal processing. Laser cutting has a high degree of flexibility, fast cutting speed, high production efficiency, and short production cycle, which has won a wide market for customers. Laser cutting has no cutting force, no deformation during processing; no tool wear, good material adaptability; no matter it is simple or complex parts, it can be cut by a precision rapid laser forming at a time; its slit is narrow, the cutting quality is good, the degree of automation is high, and the operation Convenient, low labor intensity, no pollution; can realize automatic layout and nesting of cutting, improve material utilization, low production cost and good economic benefit.