Articles
| Open Access |
DOI: Innovative Technologies For Manufacturing Foam Models And Cast Steel Parts Of Harrow Tooth With Wear-Resistant Carbide Coating By Casting On Gasifyable Models And Their Optimal Thermal Treatment
Tilabov Baxodir Qurbanovich , Doctor Of Technical Sciences, Professor Of The Department Of "Technology Of Mechanical Engineering" Of The Faculty Of Power Engineering And Mechanical Engineering Of The Almalyk Branch Of The Tashkent State Technical University Named After Islam Karimov, UzbekistanAbstract
This article describes innovative step-by-step technologies for the manufacture of foam models and cast steel parts of the harrow teeth with a wear-resistant hard-alloy coating by casting on gasified models. Methods of gluing gasified models, the processes of forming, rammers, pouring liquid metal and the formation of cast parts of the harrow teeth are shown. Compositions, microstructures and properties of hard-alloy coatings made of 35GL steel are given. The surface thickness of the coating on the finished harrow tine parts is shown. The hardness and microhardness of the surface and subsurface layers of the samples were determined. Optimal modes of heat treatment with double phase recrystallization for these parts have been developed. It has been proved that heat treatment with double phase recrystallization increases the wear-resistance and durability of finished steel parts by 2-3 times.
Keywords
Gasified Model, Hard-Alloy Coatings, Gluing Foam Models
References
Tkachev V.N. Wear and increased durability of the working bodies of tillage machines. – M.: Mashinostroenie, 1984. - 293 p.
Nilovsky I.A. From the experience of work on finding ways to increase wear-resistance plowshares and other parts of agricultural machines. - In collection: Increasing wear-resistance plowshares. – M.: Mashgiz, 1986. - S. 202-212.
Severnev M.M. Wear of agricultural machinery parts. – L.: Kolos, 1988. - 289 p.
Tilabov B.K. Solving the problem of technology for producing cast parts of machines and mechanisms with a hard-alloy wear-resistant coating from local raw materials of the Republic of Uzbekistan. // Uzbek journal Problems of Mechanics. – Tashkent, 2014. No.1. - S.37-42.
Kotov O.K. Surface hardening of machine parts by chemical-thermal methods. – M.: Mashinostroenie, 2006. - 344 p.
Mukhamedov A.A. Influence of structural parameters of heat-treated steel on abrasive wear resistance // Izvestiya VUZov. Ferrous metallurgy. – Moscow, 1989. No.7. - P.115.
Tilabov B.K. Innovative technologies for the production and use of wear-resistant hard-alloy coatings for cast parts of machines and mechanisms. – Tashkent.: Bulletin of TashIIT. No.3. 2014. - P.66-71.
Tilabov B.K. A promising technology for producing cast parts with an optimal chemical composition and improved mechanical properties. Tashkent Chemical-Technological Institute. Journal of Chemistry and Chemical Technology. – Tashkent, 2015. No.1. - S.53-57.
Tilabov B.K. Progressive technologies for the manufacture of cast parts of machines with a hard-alloy coating by casting according to gasified models. Association of scientific, engineering and commercial structures "ONICS". Collection of scientific papers. – Russia, Sverdlovsk region Irbit, 2015. - S.209-214.
Tilabov B.K. Heat treatment of wear resistant hardalloved coating of the details oвtained by casting on gasified models // Izvestiya of technical university Gabrovo. Journal of Technical University of Gabrovo. – Bulgaria, 2015. Vol. 49. - P.11-14.
Tilabov B.K. Improving working efficiency and durability of cast parts of tilling machines // European Science Review. «East West» Association for Advanced Studies and Higher Education GmbH. Vena. – Austria, 2016. #7-8. - P.23-27.
Mukhamedov A.A. The influence of thermal History on the structure and properties of steel // The physics of metals and metallography. – Moscow, 2005. Vol.77. - Р.482-487.
Tilabov B.K. Increase the service life of cast parts tillihg machines // International Conference “Global Science and Innovation” March 23-24, 2016. – USA. Chicago, 2016. - P.222-225.
Tilabov B.K. Optimal modes of heat treatment to improve the abrasive wear resistance of cast machine parts // European applied sciences. Europaische Fachhochschule. ORT Publishing. Germaniy, 2016. #3. - P.35-38.
Normurodov U.E., Tilabov B.K. Choice of Material and Thermal Hardening of Surface Layers of Casting Steel Parts of Soil Processing Machines and Mechanisms. Journal of Scopus, Solid State Technology. – USA, 2020. Volume: 63 Issue: 6 Publication Year: Desembe, 2020.
Article Statistics
Copyright License
Copyright (c) 2021 The American Journal of Engineering and Technology
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain the copyright of their manuscripts, and all Open Access articles are disseminated under the terms of the Creative Commons Attribution License 4.0 (CC-BY), which licenses unrestricted use, distribution, and reproduction in any medium, provided that the original work is appropriately cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations.