Single Bar Diode Laser Tailor-made plates are the key to achieving this goal - billets are converted into actual body plates in a single processing step. These semi-finished products are made of metal plates with different material thickness and quality.
When designing them, the subsequent component-specific material thickness and strength have been precisely defined. This increases the rigidity of the component and allows precise positioning and conversion of the collision energy at some of the components. At the same time, other areas have been specially reinforced to protect passengers, thus significantly improving the safety of accidents.
At the same time, through the pre-cutting blank to optimize the consumption of steel and aluminum, thereby reducing costs. However, the most important advantage of tailor-welded blanks is the selection of specific high-strength steels or metal plates with different thicknesses in accordance with the local requirements of the parts to achieve the purpose of reducing the weight. The safety and performance of the vehicle are also improved due to weight loss and reduced material consumption.
When producing Tailor Welds,Single Bar Diode Laser the welding of different metal sheets mainly uses laser butt welds, which can achieve the best power transmission and the best forming characteristics. For this reason, a diode laser, a solid-state laser, or a CO2 laser is required in this process.
However, CO2 lasers are increasingly considered to be uneconomical because their efficiency is very low, usually 10 percent. Also hold the same view. The company is a leading manufacturer of customized solutions for the growing market for thermoformed body parts.
As a result, the world's largest steelmaker's international operations subsidiary decided to use new laser light sources to replace traditional CO2 lasers.
Diode lasers: ideal for tailor welding
Choosing a new type of laser is the first step in updating the development. In solid-state lasers, diode-pumped disc lasers and fiber lasers have also been considered: both lasers have been recognized in welding applications and have a 30% efficiency.
First of all, fiber lasers are the company's most desirable choice, mainly based on their initial experience. However, the company subsequently decided not to use the fiber laser has been tested, but favor the selected fiber coupling diode laser.
Founded in 1997, the company is headquartered in the German market, the company is the world's industrial diode laser market pioneer, and the development of this technology has played a decisive impact.
Compared with the original choice of fiber lasers,Single Bar Diode Laser first in their internal application laboratory to carry out a successful test run: the company for different raw materials to test the welding point and get the corresponding process parameters.
In all tests, the beam quality and process stability of the diode lasers were demonstrated, so in December 2011, the first CO2 laser was replaced by an LDF 5000-40 fiber coupled diode laser (400 μm fiber and 5 kW laser power ).
When the test results in the production process to be confirmed, the follow-up equipment installation is also a steady stream.
Stable pool of excellent reliability
In the case of welding processes, diode lasers exhibit superiority in many respects compared to other types of lasers. For example, one of the advantages of the process is that the baths are particularly stable: "Despite their moderate working distances, diode lasers produce much less molten metal spatter on metal plate or laser optics, and the welds are cleaner smooth.
In addition, a diode laser can span a larger gap than a laser that focuses on a smaller point. "
Diode lasers emit obvious laser characteristics, in which the laser is flattened beam distribution, the wavelength between 930 to 1060nm, up to four wavelength coupling and formed. These factors are the reasons for the stability of the diode laser in the process and the stability of the welding process.
In addition,Single Bar Diode Laser the diode laser beam can be more easily absorbed because its wavelength is shorter than the wavelength of the fiber laser or disc laser (typically between 1030 and 1070 nm). "However, in order to meet the application of the automotive body area, the laser needs to provide not only good welding results."