Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-11-520-528
A. Kameneva, V. Kichigin, N. Bublik
AlN, AlTiN, AlZrN, and AlCrN coatings obtained by pulsed magnetron sputtering on substrates made of R18, 40X and St3 steels are considered. The experimental technique and the obtained nanostructured and amorphous layers of coatings with different properties are described. The results of studies of the microstructure, defects, elemental composition and electrochemical parameters of the obtained coatings are shown. The analysis of the corrosion behavior by the characteristics of corrosion currents density, polarization resistances, coatings electrochemical activity in 3 % NaCl solution is presented. The effect of the coating microstructure and the substrate material on the corrosion resistance is shown.
{"title":"Electrochemical behavior of coatings AlN, MAlN on different substrates in 3 % NaCl solution","authors":"A. Kameneva, V. Kichigin, N. Bublik","doi":"10.36652/1813-1336-2021-17-11-520-528","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-11-520-528","url":null,"abstract":"AlN, AlTiN, AlZrN, and AlCrN coatings obtained by pulsed magnetron sputtering on substrates made of R18, 40X and St3 steels are considered. The experimental technique and the obtained nanostructured and amorphous layers of coatings with different properties are described. The results of studies of the microstructure, defects, elemental composition and electrochemical parameters of the obtained coatings are shown. The analysis of the corrosion behavior by the characteristics of corrosion currents density, polarization resistances, coatings electrochemical activity in 3 % NaCl solution is presented. The effect of the coating microstructure and the substrate material on the corrosion resistance is shown.","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":"122857115","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-12-570-573
S. Yakovlev, V. Kurdyumov, O.F. Simonova, I. Utkin, M.A. Turkov
The analysis of the effectiveness of modern technologies for obtaining key — keyway of the shaft during the repair of machines is carried out. The results of research on the technology of obtaining such mates by means of electromechanical upsetting of keyway slots on shafts are presented. Recommendations are proposed for improving the efficiency and reliability of the key — keyway of the shaft, modified by electromechanical processing.
{"title":"The efficiency of electromechanical upsetting of keyways on shafts during machine repair","authors":"S. Yakovlev, V. Kurdyumov, O.F. Simonova, I. Utkin, M.A. Turkov","doi":"10.36652/1813-1336-2021-17-12-570-573","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-12-570-573","url":null,"abstract":"The analysis of the effectiveness of modern technologies for obtaining key — keyway of the shaft during the repair of machines is carried out. The results of research on the technology of obtaining such mates by means of electromechanical upsetting of keyway slots on shafts are presented. Recommendations are proposed for improving the efficiency and reliability of the key — keyway of the shaft, modified by electromechanical processing.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"221 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":"116532131","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-12-565-569
V. Lebedev, Yu. M. Vernigorov, G. Demin
The article presents the essence of the magnetodynamic method of applying a hard-lubricating coating to the surface of parts and the means of its implementation, reveals the mechanism of coating formation under conditions of a rotating electromagnetic field, and builds a simulation model of the technological coating system using the magnetodynamic method.
{"title":"Modeling of the process of applying solid-lubricating coatings by the magnetodynamic method","authors":"V. Lebedev, Yu. M. Vernigorov, G. Demin","doi":"10.36652/1813-1336-2021-17-12-565-569","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-12-565-569","url":null,"abstract":"The article presents the essence of the magnetodynamic method of applying a hard-lubricating coating to the surface of parts and the means of its implementation, reveals the mechanism of coating formation under conditions of a rotating electromagnetic field, and builds a simulation model of the technological coating system using the magnetodynamic method.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"22 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":"134118492","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-9-405-407
B. Mokritsky, E. Mokritskaya
The possibilities of processing materials with hardness up to 65 HRC with carbide end mills are shown. Examples of milling hardened tool steels and sandwich-type materials based on structural steels with high hardness surfacing are given. The results of the use of various types and brands of tools are considered. A method for controlling the dynamic parameters of a cutting system for high-hardness materials based on controlled acoustic emission is described.
{"title":"Blade processing of hardened materials. Part 1. Control of processing of materials hardened under static-pulse loading","authors":"B. Mokritsky, E. Mokritskaya","doi":"10.36652/1813-1336-2021-17-9-405-407","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-9-405-407","url":null,"abstract":"The possibilities of processing materials with hardness up to 65 HRC with carbide end mills are shown. Examples of milling hardened tool steels and sandwich-type materials based on structural steels with high hardness surfacing are given. The results of the use of various types and brands of tools are considered. A method for controlling the dynamic parameters of a cutting system for high-hardness materials based on controlled acoustic emission is described.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"185 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":"134119798","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2019-15-252-256
N. F. Struchkov, G. G. Vinokurov, A. Kychkin
Researches of open porosity and structure of the electroarc metallization coatings received from powder wire with the modifying additives in the form of the complex concentrator of Tomtorsky field rare-earth elements are conducted. It is established that open porosity depend on features of formation of layers which the sizes of refractory components of powder charge of wire significantly affect. It is shown that the porosity of layer on smooth substrate is close to zero, with removal from substrate the average porosity of coating layers increases. Keywords: electroarc metallization coating, rare-earth metals, open porosity, hydrostatic weighing, microstructure, Markov process.
{"title":"Study of porosity and structure of wearresistant\u0000powder coatings with modifying additives","authors":"N. F. Struchkov, G. G. Vinokurov, A. Kychkin","doi":"10.36652/1813-1336-2019-15-252-256","DOIUrl":"https://doi.org/10.36652/1813-1336-2019-15-252-256","url":null,"abstract":"Researches of open porosity and structure of the electroarc metallization coatings received from powder wire\u0000with the modifying additives in the form of the complex concentrator of Tomtorsky field rare-earth elements are\u0000conducted. It is established that open porosity depend on features of formation of layers which the sizes of refractory\u0000components of powder charge of wire significantly affect. It is shown that the porosity of layer on smooth\u0000substrate is close to zero, with removal from substrate the average porosity of coating layers increases.\u0000Keywords: electroarc metallization coating, rare-earth metals, open porosity, hydrostatic weighing, microstructure,\u0000Markov process.","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":"134592376","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2022-18-6-283-287
D. S. Polukhin, Yu. N. Goykhenberg
The microhardness of a nickel-phosphorus coating 60 μm thick chemically applied to a steel substrate from an alkaline solution was determined at loads from 0,1 to 0,5 kgf. The control was carried out on preliminarily prepared samples of steel 09G2S, which passed the stage of crystallization annealing of the coating to the required hardness. The quality of the coating after the control and after 24 hours was evaluated with a reagent consisting of potassium synergistic and sodium chloride. It is established that the load is 0,2; 0,3 and 0,5 kgf are not suitable for reliable measurement of the microhardness of the coating due to a violation of its integrity and distortion of the microhardness indicators. A load of 0,05 kgf is unacceptable due to obtaining diagonals that are a multiple of the smaller confidence interval of 0,02 mm. The conducted studies and the revealed patterns made it possible to select the optimal load (0.1 kgf) used in determining the microhardness of a 60 μm thick coating, which guarantees the preservation of the quality of parts used in the oil and gas industry in the hardness range of 1000 HV and more.
{"title":"Control of microhardness of nickel-phosphorus coatings in amorphous and crystal states, taking into account requirements to quality of supplied products","authors":"D. S. Polukhin, Yu. N. Goykhenberg","doi":"10.36652/1813-1336-2022-18-6-283-287","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-6-283-287","url":null,"abstract":"The microhardness of a nickel-phosphorus coating 60 μm thick chemically applied to a steel substrate from an alkaline solution was determined at loads from 0,1 to 0,5 kgf. The control was carried out on preliminarily prepared samples of steel 09G2S, which passed the stage of crystallization annealing of the coating to the required hardness. The quality of the coating after the control and after 24 hours was evaluated with a reagent consisting of potassium synergistic and sodium chloride. It is established that the load is 0,2; 0,3 and 0,5 kgf are not suitable for reliable measurement of the microhardness of the coating due to a violation of its integrity and distortion of the microhardness indicators. A load of 0,05 kgf is unacceptable due to obtaining diagonals that are a multiple of the smaller confidence interval of 0,02 mm. The conducted studies and the revealed patterns made it possible to select the optimal load (0.1 kgf) used in determining the microhardness of a 60 μm thick coating, which guarantees the preservation of the quality of parts used in the oil and gas industry in the hardness range of 1000 HV and more.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"239 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":"115757314","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2022-18-8-370-378
R. K. Salakhova, A. B. Tikhoobrazov, A. S. Yaroshenko, T. Smirnova
An electrochemical method for producing a composite graphite powder by depositing nickel, copper and Cu—Ni coatings on graphite powder grade GL-1 is proposed, which ensures the production of a clad powder material. An installation, a technological scheme was developed, and a cyclic method of electrochemical metallization of graphite was proposed, which makes it possible to obtain a composite graphite powder of a given chemical composition. An electrochemical method for producing a composite graphite powder by depositing nickel, copper and Cu-Ni coatings on graphite powder grade GL-1 is proposed, which ensures the production of a clad powder material. An installation, a technological scheme was developed, and a cyclic method of electrochemical metallization of graphite was proposed, which makes it possible to obtain a composite graphite powder of a given chemical composition. The graphite powder nickel plating process was optimized, a regression equation was obtained, and the results of the dispersion analysis of regression coefficients were presented, indicating the adequacy and statistical significance of the obtained regression model. The thickness of nickel, copper and combined Cu-Ni coatings was determined by optical microscopy. It is shown that the electrolytic method of graphite powder metallization makes it possible to deposit continuous coatings with the formation of a shell (capsule) for each graphite particle. Presents the results of a study of the physicochemical properties of nickel-plated graphite powder (bulk density, fluidity, granulometric and chemical composition).
{"title":"Electrochemical method for obtaining of composite graphite powder","authors":"R. K. Salakhova, A. B. Tikhoobrazov, A. S. Yaroshenko, T. Smirnova","doi":"10.36652/1813-1336-2022-18-8-370-378","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-8-370-378","url":null,"abstract":"An electrochemical method for producing a composite graphite powder by depositing nickel, copper and Cu—Ni coatings on graphite powder grade GL-1 is proposed, which ensures the production of a clad powder material. An installation, a technological scheme was developed, and a cyclic method of electrochemical metallization of graphite was proposed, which makes it possible to obtain a composite graphite powder of a given chemical composition. An electrochemical method for producing a composite graphite powder by depositing nickel, copper and Cu-Ni coatings on graphite powder grade GL-1 is proposed, which ensures the production of a clad powder material. An installation, a technological scheme was developed, and a cyclic method of electrochemical metallization of graphite was proposed, which makes it possible to obtain a composite graphite powder of a given chemical composition. The graphite powder nickel plating process was optimized, a regression equation was obtained, and the results of the dispersion analysis of regression coefficients were presented, indicating the adequacy and statistical significance of the obtained regression model. The thickness of nickel, copper and combined Cu-Ni coatings was determined by optical microscopy. It is shown that the electrolytic method of graphite powder metallization makes it possible to deposit continuous coatings with the formation of a shell (capsule) for each graphite particle. Presents the results of a study of the physicochemical properties of nickel-plated graphite powder (bulk density, fluidity, granulometric and chemical composition).","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"119 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":"131292829","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-9-419-423
S. Yakovlev, V. Kurdyumov, A. Gluschenko, M. Sotnikov, S. Petryakov
The analysis of technologies providing self-sharpening of cutting parts of working bodies of agricultural machinery is carried out. Point electromechanical processing of cutting surfaces with one and two electrode-tools is proposed. The results of metallographic studies of hardened structures and changes in hardness along the depth of products are presented. Recommendations for hardening the cutting parts of the working bodies of agricultural machinery by point electromechanical processing are proposed.
{"title":"Providing self-sharpening of the cutting parts of working bodies of agricultural machinery by point electromechanical processing","authors":"S. Yakovlev, V. Kurdyumov, A. Gluschenko, M. Sotnikov, S. Petryakov","doi":"10.36652/1813-1336-2021-17-9-419-423","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-9-419-423","url":null,"abstract":"The analysis of technologies providing self-sharpening of cutting parts of working bodies of agricultural machinery is carried out. Point electromechanical processing of cutting surfaces with one and two electrode-tools is proposed. The results of metallographic studies of hardened structures and changes in hardness along the depth of products are presented. Recommendations for hardening the cutting parts of the working bodies of agricultural machinery by point electromechanical processing are proposed.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"99 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":"132084335","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2022-18-6-276-282
D. Krokhin, V. Smolentsev, I. Starodubtsev
The experience of using additive technology in relation tocombined methods of tool manufacturing with the impact of electromagnetic and other types of fields on the process., where there are completely or partially no traditional mechanical effects on the tool part, which must have high mechanical strength, wear resistance. It is shown that the field of use of additive technologies is much wider than it was previously accepted., and mainly covers modern flexible-structured production of such branches of mechanical engineering, where there is a constant updating of products and the technological process is based on the production of limited batches of high-tech products, as a rule, according to preliminary orders of the consumer. It is proved that the scientific foundations of the multilayer formation of parts created to date are legitimate for coating, controlled layer-by-layer changes in the performance characteristics of materials, the creation of means of cooling the hot zone of aircraft engines in aerospace engineering, where multilayer templates with specified performance characteristics can be used as a data carrier. A new (according to the authors’ patent) direction of manufacturing unprofiled electrode tools with giving them useful properties of a profile tool is considered. The ways of solving the problem of controlling the operational characteristics of products by creating parts from conjugate layers, the properties of which are formed by optimizing technological modes, are proposed. The ways of effective finishing of combined methods of surface layers of coatings with preservation of useful performance qualities of parts obtained using additive technologies are studied.
{"title":"Additive manufacturing technologies of tool electrodes","authors":"D. Krokhin, V. Smolentsev, I. Starodubtsev","doi":"10.36652/1813-1336-2022-18-6-276-282","DOIUrl":"https://doi.org/10.36652/1813-1336-2022-18-6-276-282","url":null,"abstract":"The experience of using additive technology in relation tocombined methods of tool manufacturing with the impact of electromagnetic and other types of fields on the process., where there are completely or partially no traditional mechanical effects on the tool part, which must have high mechanical strength, wear resistance. It is shown that the field of use of additive technologies is much wider than it was previously accepted., and mainly covers modern flexible-structured production of such branches of mechanical engineering, where there is a constant updating of products and the technological process is based on the production of limited batches of high-tech products, as a rule, according to preliminary orders of the consumer. It is proved that the scientific foundations of the multilayer formation of parts created to date are legitimate for coating, controlled layer-by-layer changes in the performance characteristics of materials, the creation of means of cooling the hot zone of aircraft engines in aerospace engineering, where multilayer templates with specified performance characteristics can be used as a data carrier. A new (according to the authors’ patent) direction of manufacturing unprofiled electrode tools with giving them useful properties of a profile tool is considered. The ways of solving the problem of controlling the operational characteristics of products by creating parts from conjugate layers, the properties of which are formed by optimizing technological modes, are proposed. The ways of effective finishing of combined methods of surface layers of coatings with preservation of useful performance qualities of parts obtained using additive technologies are studied.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"36 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":"133022028","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}
Pub Date : 1900-01-01DOI: 10.36652/1813-1336-2021-17-8-377-381
N. Nenakhov, V. Smolentsev, V. L. Mozgalin, A. Portnykh
The issues of preparation the surfaces of metal products for the application of high-temperature protective coatings from mineral-ceramic granules with a conductive binder are considered. The influence of contamination in the contact zone of the preparation with the coating on the quality of the product is described and methids for eliminating the factors affecting the decrease in the resistance of the applied layer under the influence of the torch of hot products of fuel combustion are show.
{"title":"Preparation of the surface of workpieces for a heat-shielding coating","authors":"N. Nenakhov, V. Smolentsev, V. L. Mozgalin, A. Portnykh","doi":"10.36652/1813-1336-2021-17-8-377-381","DOIUrl":"https://doi.org/10.36652/1813-1336-2021-17-8-377-381","url":null,"abstract":"The issues of preparation the surfaces of metal products for the application of high-temperature protective coatings from mineral-ceramic granules with a conductive binder are considered. The influence of contamination in the contact zone of the preparation with the coating on the quality of the product is described and methids for eliminating the factors affecting the decrease in the resistance of the applied layer under the influence of the torch of hot products of fuel combustion are show.","PeriodicalId":178558,"journal":{"name":"Strengthening Technologies and Coatings","volume":"88 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":"117276962","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}
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