Views: 33 Author: Site Editor Publish Time: 11-01-2021 Origin: Site
The first step in metal processing is cutting, which simply cuts off the raw material or separates it in shape to obtain a blank. Common metal cutting methods include: grinding wheel cutting, saw cutting, flame cutting, plasma cutting, laser cutting and waterjet cutting. Nowadays, metal laser cutting is more widely used, because laser cutting has many advantages. Today Leapion Laser shares the different metal cutting methods and their characteristics.
With the development of fiber laser technology, metal laser cutting has gradually become the main market for laser applications, and laser cutting equipment has gradually become the main force to replace traditional metal cutting equipment.
1. Because metal laser cutting uses high-energy laser beams to heat, partially melt, and vaporize metal to complete the cutting of materials, it is usually used for high-efficiency and precision cutting of thin steel plates (<30mm).
2. The cutting quality of the laser is very excellent, not only the cutting speed is fast, but the dimensional accuracy is also high (up to ±0.05mm), and because the laser beam acts on a very small area, the heat-affected zone is very small, and the workpiece is hardly deformed .
3. In terms of cutting quality, laser cutting is better than plasma cutting; in terms of cutting speed, plasma is faster than laser.
Use a high-energy density laser beam to heat the workpiece. It vaporizes in a short period of time to form steam. Make a cut in the material. The heat of vaporization of materials is generally large, so high power and power density are required for laser vaporization and cutting.
When laser melting and cutting, the metal material is melted by laser heating, and the nozzle is sprayed with non-oxidizing gas (Ar, He, N, etc.), relying on the strong pressure of the gas to discharge the liquid metal to form an incision. The energy required is only 1/10 of that of vaporized cutting. Laser melting cutting is mainly used for cutting some materials that are not easy to oxidize or active metals, such as stainless steel, titanium, aluminum and their alloys.
It uses a laser as a preheating heat source and an active gas such as oxygen as the cutting gas. On the one hand, the blown gas reacts with the cutting metal to generate oxidation reaction and release a large amount of oxidation heat; on the other hand, the molten oxide and melt are blown out of the reaction zone, and the cutting speed is much faster than laser vaporization cutting and melting cutting. Laser oxygen cutting is mainly used for easily oxidized metal materials such as carbon steel, titanium steel and heat-treated steel.
Laser cutting technology not only has many advantages in cutting metal materials, but also has been widely used in the processing of non-metal materials. Laser cutting can greatly reduce the processing time, reduce the processing cost, improve the quality of the workpiece, and greatly improve the production efficiency, and is widely favored.
If you want to know more about laser cutting machine information and professional questions, please contact Leapion Laser.
