The requirements for quality parameters in radiation of different wavelength (i.e. CO 2 lasers and fiber lasers) have been defined so as to perform efficient oxygen-free gas laser cutting of large-thickness samples.The main channels of consumption of radiation power in the cutting process have been considered. It is noted that focused beam divergence not only decreases the cutting speed, but also causes cutting quality deterioration.
Since nowadays the economy of the Russian Federation depends greatly on export of these mineral deposits, it is necessary to start development and exploitation of new deposits in a short space of time. Thereby, it is necessary to start rapidly development and sophistication of the technologies for reconditioning, repair and enhancement of performance characteristics of the drilling equipment used for extraction of mineral deposits, particularly, in the Arctic zone. The list of domestic manufacturers of drilling equipment is shown. Domestic laser installations for such technologies are described in the article.
A formula for the diameter definition of the spot of focused laser emission at the known quality parameters of BPP and M2 ray is obtained. A formula for the definition of the optimum focal distance of an optical path in a fiber laser is presented. An alignment chart is formed for the definition of the optimum value of the focal distance of the optical system in a fiber laser.
A domestic plant for additive techniques of different materials fritting is presented. The plant in its basis has a high-powered (up to 2.5 kW) waveguide CO2 – laser possessing a unique in the uniformity of emission power density distribution on a target. The results of nickel-based heat-resistant alloy fritting of TCNA-1VR, VZhL12U and VZh159 types developed for manufacturing complex contoured parts of gas turbine engines (GTE) by a method of layered laser alloying and for complex contoured parts GTE repair by a method of gas powder laser surfacing are shown. During laser remelting of these powders it is possible to grow a billet with a homogeneous fine-grain structure which manufacturing is impossible at common techniques of casting.
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