Strengthening Technologies and Coatings最新文献

{"title":"Application of secondary carbide powders for restoration and hardening of parts","authors":"R. Zadorozhny, I. V. Romanov, V.A. Zuevsky, O. Sidorkin","doi":"10.36652/1813-1336-2023-19-2-77-80","DOIUrl":"https://doi.org/10.36652/1813-1336-2023-19-2-77-80","url":null,"abstract":"Attention in this work is paid to the technology of obtaining powder materials from waste metals and alloys by the method of electroerosive dispersion and subsequent deposition of wear-resistant coatings. At present, it is important to look for new materials for the repair and restoration of parts of various equipment. Recycling of metal waste using electroerosive dispersion will reduce the cost of such materials. The most common way to restore parts is plasma-powder surfacing. In this case, the physical and technological parameters of the metal powders used are of particular importance. In the presented work, the expediency and relevance of the use of recycled powder materials in the technologies for the restoration and hardening of parts by the method of plasma-powder surfacing is proved. (Research purpose) Increasing the resource of parts of various equipment, restored and hardened with hard-alloy powder materials obtained by recycling waste from machinebuilding industries by the method of electroerosive dispersion. (Materials and methods) The work was carried out at the laboratory-experimental base of the Central Collective Use Center \"Nano-Center\" FGBNU FNATS VIM. To conduct research, a powder of the T15K6 brand was obtained from the waste of hard-alloy plates by the method of electroerosive dispersion. The following equipment was used: a pulse generator for electrospark processing of modes. Elitron-52B, Niton XL3t GOLDD + X-ray fluorescence spectrometer, set of sieves, ShS-80-01 SPU drying cabinet, Acculab ALC-210d4 analytical balance. (Results and discussions) Investigations were carried out on the elemental composition of the powders used, as well as the physical and mechanical properties of the coatings obtained on their basis by plasma-powder surfacing. (Conclusions) Studies have shown the rationality of using secondary hard-alloy powder materials in the technologies of plasma-powder surfacing in the restoration and hardening of parts. The hardness of the resulting coatings is much higher than the initial hardness of worn parts.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126087002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring of the kinetic regularities of wear of the inner surfaces of technological equipment made of structural materials operating in conditions of intense corrosion using various working media","authors":"V. Gadalov, A. Gorlov, I. Vornacheva, A. Filonovich, I. Makarova","doi":"10.36652/1813-1336-2022-18-3-106-109","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-3-106-109","url":null,"abstract":"The reasons for failures of technological equipment made of structural steels of long-term operation in various environments and fields of application are considered. Investigations of the failure rate and modeling of wear processes of steel equipment using regression and correlation analyzes are presented. The results of the experiment are presented in the form of polynomial kinetic wear models. The results of comparison of experimental and theoretical data on the wear rate for various types of equipment are also presented. The results of the normal distribution of the experimental values of the degree of wear for various types of equipment are shown.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122363754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure and properties of electroerosive materials from lead bronze waste BrS30, obtained in oxygen- and carbon-containing media","authors":"E. Ageev, A. Pereverzev","doi":"10.36652/1813-1336-2021-17-7-309-312","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-7-309-312","url":null,"abstract":"The results of experimental studies of the structure and properties of electroerosive materials from lead bronze waste BrS30 obtained in oxygen- and carbon-containing media are presented. The influence of the chemical composition of liquids and technological parameters of dispersion on the properties of the resulting electroerosive materials is shown. In particular, a part of oxygen is present on the surface of particles obtained in distilled water, and part of carbon is present in lighting kerosene. The average particle size obtained in lighting kerosene is 1.2 times higher than the average particle size obtained in distilled water. The particles of the BrS30 alloy dispersed by electroerosion have a regular spherical, elliptical shape and agglomerates.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125111094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of wear resistance of composite coatings obtained by electrodeposition of electrolytes-suspensions","authors":"E. Ageeva, V. Serebrovsky, O.S. Sernikova","doi":"10.36652/1813-1336-2023-19-2-73-76","DOIUrl":"https://doi.org/10.36652/1813-1336-2023-19-2-73-76","url":null,"abstract":"The results of experimental studies aimed at assessing the wear resistance of composite coatings obtained by electrodeposition of electrolytes-suspensions with the addition of electroerosive powders made from waste high-speed steel grade P6M5 are presented. It has been experimentally established that the surface roughness parameter Ra of the obtained coatings is 2.14 microns, while the coefficient of friction on the path of 500 m is 0.14. It is noted that the introduction of highly solid particles of the electroerosive charge formed during the quenching of metal vapors in the working fluid during dispersion into the electrolyte increases the wear resistance of composite electrodeposited coatings.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly filled, non-toxic of material with increased strength and fire resistance","authors":"N. V. Ryabinina, G. Shaidurova, M. Tokareva","doi":"10.36652/1813-1336-2021-17-6-250-255","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-6-250-255","url":null,"abstract":"Presents the results of research and testing of a newly developed composite material, the unique properties of which make it possible to use it, both as a special fire-resistant coating for habitable objects and in construction (door blocks, liners for effective thermal insulation). The heterogeneous structure of the cured composite does not contain toxic components, and when exposed to an open flame, it is even more hardened as a result of reflow and does not emit harmful chemical compounds. The developed material was obtained using dispersion and mechanical activation by mixing individual components with subsequent stage curing at normal and elevated temperatures., using sodium soda glass as a binder. Unique properties are provided by the presence in the recipe composition of mainly silicon-containing components — a mixture of dispersed fillers, including discrete glass fibers with a length of 4...7 mm, using liquid sodium glass as a binder.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127154681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric analysis of residual deformations in innovative mandrelling methods of holes in aluminum alloy workpieces","authors":"N. Chikhacheva, A. V. Shchedrin, A.A. Zabavina, I. A. Nikiforov","doi":"10.36652/1813-1336-2022-18-7-327-331","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-7-327-331","url":null,"abstract":"The influence of the nature and parameters of the microgeometry of the impacting surfaces of the tool, as well as the composition of the technological lubricant on residual deformations in the methods of combined mandrel holes of duralumin D1T workpieces has been studied comparatively.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129178565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strengthening of glass fibers obtained by recycling of polymer composite material","authors":"A. E. Protsenko, V. Petrov","doi":"10.36652/1813-1336-2022-18-8-347-351","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-8-347-351","url":null,"abstract":"The results of the study of the recycling of the glass-reinforcing filler of the polymer composite material with the epoxy matrix are presented. The data of the epoxy plastic swelling kinetics during solvolysis in an ethanol medium in the temperature range of 200...280 °C were obtained. Optimal modes of fiberglass recycling have been established. The fibers processing at 250 °C have a strength of 18.6 % higher than the original fiber. As a result of the research, the presence of a polymer coating with a thickness of about 100 nm was established on the surface of the fiber.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129923233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of technological heredity on performance indicators of parts surface layer after finishing and strengthening treatment","authors":"V. Butenko, A. Shvedova","doi":"10.36652/1813-1336-2023-19-6-254-260","DOIUrl":"https://doi.org/10.36652/1813-1336-2023-19-6-254-260","url":null,"abstract":"The results of studying the influence of the conditions of pre-treatment of parts on the parameters of roughness and the physical and mechanical state of the material of their surfaces after finishing and hardening treatment are presented. Empirical dependencies are obtained, which can be used in the development of effective technological processes that provide the specified performance indicators of the part. The nature of technological heredity has been studied from the point of view of the behavior of dislocations in the zone of mechanical processing of the material of parts in the process of plastic deformation, and the degree of influence of the methods of pre-treatment of surfaces of parts on the characteristics of the physical and mechanical state of the material of the surface layer after its hardening rolling has been studied.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126438628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of epoxy-gravel composite concentration on change in ball test hardness","authors":"A. Mikhalchenkov, Yu. I. Filin, S. Feskov","doi":"10.36652/1813-1336-2022-18-9-393-395","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-9-393-395","url":null,"abstract":"The hardness value of the epoxy-gravel composite, measured by a ball sample, is determined by the amount of gravel component, as well as the degree of heterogeneity (heterogeneity) of the structure. The maximum hardness value is a composite with a granite component content of 70 wt.h.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127916534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural aspects of surface hardening of parts operating under wear conditions","authors":"O. Chudina, V. Prikhodko, Yu. M. Luzhnov","doi":"10.36652/1813-1336-2022-18-9-396-404","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-9-396-404","url":null,"abstract":"The article describes the processes occurring in the frictional contact zone under real operating conditions. Analyzes the existing material science approaches to the issues of surface destruction during friction. Studies the structural aspects of surface layers that can effectively resist wear. The conditions of structural self-organization of friction surfaces on the meso-, micro- and nanoscale are formulated. Examples of modern technologies that maximally realize hardening mechanisms to increase the wear resistance of steels are given.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121450885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}