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Spheroidization of Particles in Tool Cutting Plates Made of Powder Hard Alloys 粉末硬质合金刀具切割板中颗粒的球形化
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700350
V. A. Skryabin, A. E. Zverovshchikov
{"title":"Spheroidization of Particles in Tool Cutting Plates Made of Powder Hard Alloys","authors":"V. A. Skryabin,&nbsp;A. E. Zverovshchikov","doi":"10.1134/S0036029523700350","DOIUrl":"10.1134/S0036029523700350","url":null,"abstract":"<p><b>Abstract</b>—The problems of forming the structure of heterogeneous powder materials of tool plates are considered. A high-quality powder material is found to be produced as a result of creating a more equilibrium structure in the form of rounded solid-phase particles, which have a high adhesion strength with the minimum free (surface) energy of the interatomic interaction forces in the solid components of alloys. When a structure of powder alloys with regular-shape particles (faceted, rounded) is formed, the most important properties of hard alloys are found to increase, which eventually ensures such stable performance indicators of parts as wear resistance, fatigue strength, creep, and impact toughness.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172170","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}
引用次数: 0
Fe–Si Powder Nitriding Control System 硅铁粉氮化控制系统
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523120236
I. B. Oparina, A. A. Kirsankin, M. A. Sevost’yanov, G. P. Dvoichenkova
{"title":"Fe–Si Powder Nitriding Control System","authors":"I. B. Oparina,&nbsp;A. A. Kirsankin,&nbsp;M. A. Sevost’yanov,&nbsp;G. P. Dvoichenkova","doi":"10.1134/S0036029523120236","DOIUrl":"10.1134/S0036029523120236","url":null,"abstract":"<p><b>Abstract</b>—To reduce the losses of ferrosilicon during heavy-medium separation, it is necessary to increase its corrosion and mechanical resistance with the obligatory preservation of magnetic properties. To form ferrosilicon powder with the specified physical and mechanical characteristics that meet the technological process requirements, an automated heat treatment process control system is designed. The formed nitrided layer thickness is found to be controlled by the holding time and temperature. The total processing time is 3 h, and the temperature can vary in the range 900–1000°C. At higher temperatures, intense growth of silicon nitride crystals occurs.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172286","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}
引用次数: 0
Increasing the Overhaul Life of Hydraulic Distributors by Electric Spark Treatment 通过电火花处理提高液压分配器的大修寿命
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700349
I. N. Kravchenko, S. A. Velichko, A. V. Martynov, D. U. Khas’yanova, D. I. Petrovskii, A. F. Slivov
{"title":"Increasing the Overhaul Life of Hydraulic Distributors by Electric Spark Treatment","authors":"I. N. Kravchenko,&nbsp;S. A. Velichko,&nbsp;A. V. Martynov,&nbsp;D. U. Khas’yanova,&nbsp;D. I. Petrovskii,&nbsp;A. F. Slivov","doi":"10.1134/S0036029523700349","DOIUrl":"10.1134/S0036029523700349","url":null,"abstract":"<p><b>Abstract</b>—The efficiency of application of a new technology for repairing hydraulic distributors with the restoration and strengthening of the worn surfaces of the life-determining joints of parts and increasing their wear resistance is evaluated. The hydraulic distributors repaired according to the proposed technology exhibit an increase in the average overhaul life under real operation by 1.24 times compared to the life in the pre-repair period of operation.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883931","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}
引用次数: 0
Surface Structure Formed after Cutting-Edge and Abrasive Machining of Parts Made of Powder Materials 粉末材料零件切削加工和研磨加工后形成的表面结构
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700477
V. A. Skryabin, A. G. Skhirtladze
{"title":"Surface Structure Formed after Cutting-Edge and Abrasive Machining of Parts Made of Powder Materials","authors":"V. A. Skryabin,&nbsp;A. G. Skhirtladze","doi":"10.1134/S0036029523700477","DOIUrl":"10.1134/S0036029523700477","url":null,"abstract":"<p><b>Abstract</b>—This paper presents experimental results on the machining of parts fabricated from powder materials. The specifics of porous surface structure formation in powder-metallurgy parts upon abrasive finishing are described.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172165","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}
引用次数: 0
Determination of the Waviness of Cylindrical Pieces during Pendulum Surface Plastic Deformation 测定摆面塑性变形过程中圆柱形工件的波浪度
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700465
S. A. Zaides, M. H. Ho
{"title":"Determination of the Waviness of Cylindrical Pieces during Pendulum Surface Plastic Deformation","authors":"S. A. Zaides,&nbsp;M. H. Ho","doi":"10.1134/S0036029523700465","DOIUrl":"10.1134/S0036029523700465","url":null,"abstract":"<p><b>Abstract</b>—The effect of the main technological parameters of pendulum surface plastic deformation on the waviness parameters of cylindrical pieces has been considered. The experimental study has shown that pendulum surface plastic deformation significantly reduces the parameters of waviness (the height <i>Wz</i> and step <i>Sw</i> of waviness decrease by 30 and 50%, respectively). Using the Statistica 10.1 package, the measurement results have been processed to determine the optimal regimes of hardening ensuring the smallest parameters of waviness.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883941","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}
引用次数: 0
Effect of the Ion–Plasma and Vacuum Treatment Parameters on the Thickness and Properties of a Nitride Coating on a VT23 Titanium Alloy 离子等离子体和真空处理参数对 VT23 钛合金氮化物涂层厚度和性能的影响
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523120327
A. V. Shalin, O. N. Gvozdeva, A. S. Stepushin, S. M. Sarychev, P. A. Smirnov
{"title":"Effect of the Ion–Plasma and Vacuum Treatment Parameters on the Thickness and Properties of a Nitride Coating on a VT23 Titanium Alloy","authors":"A. V. Shalin,&nbsp;O. N. Gvozdeva,&nbsp;A. S. Stepushin,&nbsp;S. M. Sarychev,&nbsp;P. A. Smirnov","doi":"10.1134/S0036029523120327","DOIUrl":"10.1134/S0036029523120327","url":null,"abstract":"<p>The effect of the vacuum ion–plasma treatment parameters on the regularities of nitride barrier coating formation on a VT23 titanium alloy (Ti–Al–V–Mo–Cr–Fe system) is studied. The resistance of the formed coating is studied upon subsequent vacuum annealing at 800°C for 1 h. The coating thickness is shown to increase with the titanium nitride deposition time. The formed nitride coating is found to have high resistance to heating in vacuum.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884006","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}
引用次数: 0
Tuning Parameters of a Ball-Rolling Mill for Rolling of Grinding Balls 用于轧制研磨球的球辊磨机的调整参数
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700325
D. L. Shvarts, I. K. Galim’yanov, V. Yu. Rubtsov
{"title":"Tuning Parameters of a Ball-Rolling Mill for Rolling of Grinding Balls","authors":"D. L. Shvarts,&nbsp;I. K. Galim’yanov,&nbsp;V. Yu. Rubtsov","doi":"10.1134/S0036029523700325","DOIUrl":"10.1134/S0036029523700325","url":null,"abstract":"<p><b>Abstract</b>—For rolling of balls, one of the main parameters for both calculating passes and developing a model for a roll is the roll spacing at the crossing point (zones where the edges of the rolls are as close as possible to each other) in addition to the roll diameter, the roll body length, and the section length. A method is developed to calculate the roll spacing at the crossing point. The calculation results are used to analyze and choose rational tuning parameters of rolls for rolling balls at the EVRAZ NTMK ball-rolling mill. The analysis is carried out on new rolls and rolls after the first, second, third, and fourth remachining of screw ball-rolling grooves. The data are systematized to plot point curves for tuning indicators, and the graphical data are used to make a polynomial approximation. Equations are derived for the functions of the tuning parameters.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884090","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}
引用次数: 0
Ultrajet Diagnostics of the Functional Properties of a New Cutting Tool Design for the Recycling of Composite Materials 用于复合材料回收的新型切割工具功能特性的超射流诊断技术
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700167
S. Li, A. L. Galinovskii, I. N. Kravchenko, S. A. Velichko, M. N. Erofeev, T. N. Borovik, V. A. Timofeev
{"title":"Ultrajet Diagnostics of the Functional Properties of a New Cutting Tool Design for the Recycling of Composite Materials","authors":"S. Li,&nbsp;A. L. Galinovskii,&nbsp;I. N. Kravchenko,&nbsp;S. A. Velichko,&nbsp;M. N. Erofeev,&nbsp;T. N. Borovik,&nbsp;V. A. Timofeev","doi":"10.1134/S0036029523700167","DOIUrl":"10.1134/S0036029523700167","url":null,"abstract":"<p>A new design of cutting tool for plastic recycling is proposed, and the use of a water–polymer ultrajet as a diagnostic tool for studying the functional properties of a material is considered. The experimental results demonstrate that the developed knife design has broad prospects for practical application. These results are confirmed by a comparative analysis of various diagnostic methods and strength calculations of the tool.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886206","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}
引用次数: 0
Effect of the Vacuum-Arc Synthesis Parameters on the Structure and Magnetic Properties of NiO Nanoparticles 真空-弧合成参数对氧化镍纳米粒子结构和磁性能的影响
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700258
I. V. Karpov, A. V. Ushakov, L. Yu. Fedorov, E. A. Goncharova, M. V. Brungardt
{"title":"Effect of the Vacuum-Arc Synthesis Parameters on the Structure and Magnetic Properties of NiO Nanoparticles","authors":"I. V. Karpov,&nbsp;A. V. Ushakov,&nbsp;L. Yu. Fedorov,&nbsp;E. A. Goncharova,&nbsp;M. V. Brungardt","doi":"10.1134/S0036029523700258","DOIUrl":"10.1134/S0036029523700258","url":null,"abstract":"<p>NiO nanoparticles are synthesized by vacuum arc sputtering. The effect of the synthesis parameters on the structural and magnetic properties of samples is studied. X-ray diffraction analysis confirms a polycrystalline structure of the nanoparticles prepared under all deposition conditions; however, the preferred orientation of crystallites depends on the deposition conditions. The magnetic behavior correlates with the crystallite size of NiO nanoparticles. Condensates with a particle size of 4–6 nm demonstrate superparamagnetic behavior, which changes into antiferromagnetic as the particle size increases.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886341","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}
引用次数: 0
Heat Resistance of Transition Metals with an Aluminized Coating 带有镀铝层的过渡金属的耐热性
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI: 10.1134/S0036029523700428
A. I. Kovtunov, Yu. Yu. Khokhlov, V. V. El’tsov, S. V. Myamin
{"title":"Heat Resistance of Transition Metals with an Aluminized Coating","authors":"A. I. Kovtunov,&nbsp;Yu. Yu. Khokhlov,&nbsp;V. V. El’tsov,&nbsp;S. V. Myamin","doi":"10.1134/S0036029523700428","DOIUrl":"10.1134/S0036029523700428","url":null,"abstract":"<p>The heat resistances of titanium, nickel, and carbon steel with aluminum-based coatings produced by liquid-phase aluminizing with diffusion annealing at 850 and 950°C are studied and compared. The influence of the holding time of aluminized titanium, nickel, and carbon steel specimens at 950°C on the changes in their weight and oxidation rate is revealed.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172278","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}
引用次数: 0
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