Today's society is an era of rapid development and advancement of science and technology. Traditional technologies are gradually becoming more modernized. Robots have also moved from real fantasy to real life. Compared with our definition and understanding of industrial robots , we no longer have heads and brains. A simple mindset of limbs and humanoid machines that are driven away. The earliest concept proposed by the industrial field for robots is to control the joints of the robots by means of servo technology, and to teach the robots to operate the robots according to requirements. This is the so-called teaching operation. Today's robots almost always use this type of control. This is also the current description of industrial robots in the technical field. The flexible robot arm can be operated at any time according to the operator's requirements. It can also be used in remote control, pre-programming and other automatic control functions, so it can be used in dangerous or hazardous environments. The article introduces the application methods and fields of laser cladding and how to use robot technology to achieve work. First, the principle, characteristics and methods of laser cladding Laser cladding refers to placing a selected coating material on the surface of the substrate to be coated by different filling methods, and then irradiating it with a thin layer on the surface of the substrate by laser irradiation, and rapidly solidifying and forming. A very low dilution, metallurgical bond to the substrate, resulting in a process that significantly improves the corrosion, abrasion, high temperature, oxidation and electrical properties of the substrate surface. The purpose of surface modification or repair of the workpiece is to meet the specific performance requirements of the material surface and to save unnecessary consumption of a large number of valuable elements. The current use of laser cladding, which is mainly used in several aspects: surface modification of materials, such as rolls, gas turbine blades, rolls, gears, etc., to increase its performance; surface repair of products, such as rotors, According to statistics, the repair cost is less than 1/5 of the replacement price, and the repair time is shortened, which solves the problem of rapid repair of key components that must be solved for the continuous and reliable operation of large-scale complete sets of equipment of large enterprises; The surface of the mold is covered with a layer of super wear-resistant anti-corrosion alloy, which can greatly improve its service life. At present, laser cladding materials widely used include nickel-based, cobalt-based, iron-based alloys, and tungsten carbide composite materials. Among them, nickel-based materials are the most widely used, and they are cheaper than cobalt-based materials. Compared to conventional surfacing, electroplating, spraying and vapor deposition techniques, laser cladding technology has several advantages. (1) The cooling rate is fast and the rapid solidification process makes the workpiece easy to obtain fine crystal structure or a new phase such as non-steady state and amorphous state which cannot be obtained by the equilibrium state. (2) The coating has a low dilution rate and forms a strong metallurgical bond or interface diffusion with the substrate of the workpiece. By adjusting the laser process power, spot size and focal length, a good coating can be obtained, and the composition and dilution can be obtained. The degree can be controlled. (3) The thermal distortion is small. When high-power density is used for rapid cladding, the deformation can be controlled to be reduced to the assembly tolerance of the part. (4) The powder selection requires almost no restrictions. Any kind of powder material can be used according to the process requirements, especially the high melting point alloy is deposited on the surface of the low melting point metal.
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