The technical innovation group of green laser pointer

Process parameters on the cladding layer size and organizational impact. In conventional power density (103-l06W/cm2) when the laser cladding, the 0.1-1s can be completed within the time course of the cladding, such a high rate of heating and cooling of the organization making the cladding layer has many features. In general, the laser cladding layer structure is divided into three zones: melting zone, transition zone and heat affected zone, in a different alloy composition and process conditions, there are some differences between the actual shape. Energy distribution of laser processing equipment as well as supporting uniformity and stability of the device has not yet reached the level of industrial production applications. Laser cladding process requires high-power laser beam stability, uniform distribution of the energy spot higher. The current management of laser melting of the main problems is the surface of the cladding layer is not flat, large amount of subsequent machining, and the alloy layer and the substrate at the junction prone to cracks and holes and other defects, to the great practical difficulties. At present, the laser processing system of fixed assets and maintenance costs relative to conventional welding and spray coating is more expensive, which makes laser-treated higher product cost, which is not laser cladding process on a large scale in the field one of the main practical application. The technical innovation group of green laser pointer will try to solve the innovation problem of green laser pointer.
High concentration of laser radiation energy, can be transported over long distances through the air. Approach is a fast, efficient use of energy. Can accurately control the heating power density and speed, and thus the deformation is small, but hardened and plasma arc spraying uses a non-uniform heating and cooling in the quenching process in thermal shock, resulting in cross-shaped and crack, often requires straightening and polishing process . Make inaccessible areas and local alloying, and the use of the laser depth focus on the parts available in the irregular uniform alloying depth. Based on the above characteristics, laser alloying the metal processing industry gradually began to get a variety of applications. So far for laser alloying the substrate with ordinary carbon steel, alloy steel, stainless steel, cast iron, cobalt and aluminum alloys, alloying elements, including Cr, Ni, W, Ti, Mn, B, V, Co, Mo and so on. Laser alloying process method is generally used in three ways: pre-law materials, hard particle injection at the same time and gas phase alloy method. The more commonly used methods. The use of electro-deposition, vapor deposition, ion implantation, brush, layer remelting, flame and plasma spraying, adhesive coating and other methods will be required prior Xu alloy powder to cover the surface alloying, and laser heating melting, the alloy surface to form a new layer. This approach in some iron-based alloy surface when widely used. The requirements of the deposited film substrate is a clean, smooth surface film interface. The director of led flash light will announce the administration decision of the manager.
In summary, the laser cladding process is a rapid solidification technique, it can produce a state of equilibrium can not be obtained under the excellent organization and performance. Restrictions on the substrate can be used according to design performance coating composition, can be prepared in a low-cost steel high-performance alloy and the substrate surface and the combination of high strength, is the other surface treatment processes can not match, is particularly suitable for oilfield corrosion, friction and wear of working conditions common surface of wearing parts and repair. Although there are still some problems on the application, but with the people of their study of theory and technology tend to improve gradually in-depth and I believe that in the near future will be excavated in the industry and its potential far-reaching impact. Laser alloying (Laser Surface Alloying, LSA) is a partial modification of metal surface, a new method, laser surface alloying process is a material modification of the scope. The technical innovation of green laser pointer is in the process.