Existing methods, which aim hardening iron parts, based on the thermal and chemical exposure. The common title of these technologies — chemical heat treatment (HTO). SUMMARY such treatment, regardless of machined metal or reagents used in the processing, is maintaining the heated metal parts in a chemically aggressive environment. As a result, the effects of temperature and the surface temperature is converted part of so-called a diffusion layer which has physical, chemical and mechanical characteristics, good initial parameters from metal. The most well-known methods XTO — cementation (saturation of the surface layer of carbon), nitriding (nitrogen saturation), chrome and siliconising (saturation of silicon). In theory, the chemical heat processing, with proper selection of reagents and test exposure can give great strength of the metal significantly, than without it. But pick up a manufacturing or processing environment mixture is not so simple.
In recent years, scientists have MSTU. Bauman Institute of Engineering Science. Blagonravova and the All-Russian Institute of Aviation Materials (Aviation Materials) were looking for the newest manufacturing consistency. As a result, research more promising method of surface hardening of parts, applicable for future development, it was recognized nitriding. Specifically, based on nitride compounds were searched and the latest consistency. During the work on the latest search technology, apart from the rest, it was found that in addition to the latest chemical consistency for a significant increase in the level of strengthening required and a Transfer development heat treatment. The result of all research work has technological documentation of the nitriding latest consistency in ammonia atmosphere in ion-plasma exposure to the treated detail.
Another result is the test report details handled by the latest technology. According to the 1st of the participants of the project B. Stupnikova (Officer Aviation Materials), nitrided steel zanogo detail (Steel grade 38H2MYUA — one of more of favorite) spent three months in the test vehicle set up to test the abrasion. After such a long exposure was not found any configurations in its size. If they were, then the available equipment is simply unable to fix them. Specifically, the results of abrasion test were made and conclusions about the likely increase component life. At the same time, the brand-new technique is not a panacea. Under the influence of the manufacturing consistency and temperature change only the surface of 25-30 nm metal parts. In other words, even a small stone chip will result in the loss of almost all parameters: wear items will go unevenly, which may even reduce its life.
Yet, even with such performance criteria new method of chemical-thermal treatment is promising and promising. In favor of this fact, among the rest, and says that at the current time, brand new technique developed by XTO several scientific organizations from around the world. In addition, there is some progress in this area. At the same time, no one has yet managed to achieve such results, which have gained Russian scientists.
Another one nasty feature the latest technology — the price of production of the strip. While it is not commonplace for most pockets productions. But the developers of a new method of hardening metals put their trust that he will intrigue the big steel companies. The practical application of the latest techniques may begin in the coming couple of years. During this period, its developers intend once again to check the status and prospects of technology as a base for more advanced ways to strengthen metals. In addition, in recent years some of the documents and complete the standards will be sent to specialized research institutions to conduct an independent review. The results of these works can be read even more confident about the commercial potential of the technology.
Meanwhile, the Russian Ministry of Education and Science, as a number of non-government funds do not fluctuate in the future the latest technology. The participating universities were targeted funding in the amount of 250 million rubles. Of course, these funds are not wasted and gave total. We can only wait to put an external expert.
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