The inner ring gear is the core component of the wind power gearbox. At present, carburizing and quenching are used for internal tooth strengthening. However, the carburizing and quenching distortion of the inner ring gear seriously affects product quality and production progress. Although the measures to prevent deformation such as process optimization, tooling inner ring quenching and the like have been carried out, a certain effect has been obtained, but the heat treatment distortion of the large inner ring gear with the inner tooth diameter of 1500 mm or more is still serious, the production of the finalizing tool and the later grinding. The cost is still high, and it also seriously affects the production cycle. Some manufacturers use internal tooth induction quenching, or internal tooth nitriding treatment and other tooth surface strengthening methods, although the heat treatment distortion problem can be basically solved, but there are also some corresponding deficiencies. For example, induction quenching requires special quenching machine tools, the one-time input cost is high, and the stability of the process is poor, and the human influence factors are large. The real imitation tooth quenching is not very mature. Similarly, ion nitriding treatment also requires special equipment. The reliability of large-scale nitriding furnace equipment also has certain problems, and the nitriding layer is also shallow, the nitriding temperature is controlled, the parts are arced, etc., which make the process Stability is difficult to guarantee. Therefore, although a lot of work has been done in recent years, it is still difficult to obtain universal recognition for the high-risk wind power industry, especially the inner ring gear of the core components of wind power gearboxes.
With the rapid development of wind power construction in China, the investment enthusiasm of wind power equipment manufacturing industry has been unprecedentedly high, especially the large-capacity megawatt-class large-scale wind turbines, which have won the market's enthusiastic pursuit. Along with the fact that the inner ring gear of the fan is getting bigger and bigger, the heat treatment strengthening method that can be used is becoming more and more scarce. The benevolent sees benevolence, the wise sees wisdom. Recently, it was learned that some companies have proposed the use of laser quenching for tooth surface strengthening. Recently, our company has also done some tests on the process of laser quenching, and it has also been applied to small modulus gears and shaft parts of some important products, solving the problems that cannot be solved by conventional heat treatment. problem.
Laser quenching is also a promising method for surface enhancement of parts that has developed rapidly in recent years. It is an energy-saving and environment-friendly industry that is strongly supported by the state. From the only experimental situation, the process stability of laser quenching is worse than that of carburizing, but it is better than induction quenching. In particular, it can better solve the problem of strengthening the root circle, and the deformation degree of parts after quenching is much better. Induction hardening, laser quenching and induction quenching have similar impact resistance, and the data dispersion is smaller than induction hardening. Although the hardened layer of the laser quenching is also shallower, it is deeper than the nitrided layer. Of course, laser quenching also requires special equipment, and the cultivation of the process and operators is more difficult than other conventional heat treatments. Process specification is also not mature with other conventional heat treatments. There is also a certain risk on large-modulus ring gears with high-risk fans, and a large number of tests must be carried out to obtain the necessary test data. Otherwise, it should not be taken. Nevertheless, according to the current test situation, laser quenching is still an effective method to solve the ring gear strengthening of the fan.
Under the support of the country's vigorous development of clean energy policies, today's wind power industry has developed rapidly and market competition has become more intense. It can be described as a group of heroes. The Eight Immortals crossed the sea and each showed their magical powers. Seek development in cooperation and survive in competition. Do not ask for the best, but for application. Only scientific and technological innovation, taking the road of scientific development, is an important way to break through the encirclement.
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Brass fasteners are used for their physical and aesthetic properties. Brass is utilized due to its high thermal conductivity and corrosion resistant properties, it is suitable for use in hot and cold environments, and resistant to water corrosion, making it a staple of industries such as heating and plumbing. Brass fasteners are largely non-magnetic (like any fastener, slight magnetic properties can develop during the manufacturing process) and resistant to tarnishing.
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