4 research outputs found

    Mathematical modeling of quantitative changes in hydrogen and oxide inclusions in aluminum alloy

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    In this article, mathematical modeling of quantitative changes in hydrogen and oxide inclusions in aluminum alloys is justified, developed, and analytically implemented. Usually, the methods of linear algebra are mostly used; in particular, the solutions of systems of inhomogeneous algebraic equations are obtained based on the method of Gauss, Cramer, and inverse matrices using the Maple 13 software package. Quantitative changes in hydrogen and oxide inclusions in the alloy are determined by a change in the average dispersion of the loaded flux. The connectivity functions of the change of oxide aluminum in the alloy Ξ² (%) with an increase in temperature Π’ (0Π‘) during the loading of the charge into the liquid bath are obtained. The connectivity functions to determine the change quantity of hydrogen Ξ» (cm3/100 g) in the alloy depending on the time t (minute) holding of the heated charge in the period of research is obtained. Based on functional dependencies, graphs of changes in the mainly desired parameters and numerical indexes in tabular form for engineering and applied calculations are constructed. In particular, graphs of the change quantity of hydrogen and oxide inclusions in the alloy with an increase of average dispersion of the flux d, graphs of change quantity of hydrogen with an increase in temperature during loading of the charge into the liquid bath, changes of the quantity of oxide aluminum in the alloy Ξ² (%) with an increase in temperature Π’ ( 0Π‘), patterns of change quantity of hydrogen in the alloy Ξ» (cm3/100 g) and quantity of oxide Ξ· (%) were plotted depending on the time of holding the heated charge in period research

    ΠœΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π΅ΡΠΊΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ…ΠΈΠΌΠΈΠΊΠΎ-тСхнологичСских процСссов Π² Ρ…ΠΎΠ΄Π΅ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Π½ΠΎΠ²Ρ‹Ρ… сплавов

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    This article analyzes that the creation of mathematical models of chemical-technological processes during the development of various alloys is supported to obtain promising new alloys in the foundry industry. Mathematical models have been developed and analytically implemented using linear algebra methods. Numerical values were determined and graphs of changes in the required parameters were constructed. The development and analytical implementation of a mathematical model of the process makes it possible to simplify practical research, and it is possible to predict the results of subsequent experiments. This serves as the basis for the automation of chemical technological processes in the production of non-ferrous metals and alloysΠ’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ ΠΏΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½ΠΎ, Ρ‡Ρ‚ΠΎ созданиС матСматичСских ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Ρ…ΠΈΠΌΠΈΠΊΠΎ- тСхнологичСских процСссов Π² Ρ…ΠΎΠ΄Π΅ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… сплавов поддСрТиваСтся для получСния пСрспСктивных Π½ΠΎΠ²Ρ‹Ρ… сплавов Π² Π»ΠΈΡ‚Π΅ΠΉΠ½ΠΎΠΌ производствС. Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ ΠΈ аналитичСски Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Ρ‹ матСматичСскиС ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌΠΈ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ Π°Π»Π³Π΅Π±Ρ€Ρ‹. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ числовыС значСния ΠΈ построСны Π³Ρ€Π°Ρ„ΠΈΠΊΠΈ измСнСния искомых ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ². Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΈ аналитичСская рСализация матСматичСской ΠΌΠΎΠ΄Π΅Π»ΠΈ процСсса ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‚ ΡƒΠΏΡ€ΠΎΡΡ‚ΠΈΡ‚ΡŒ практичСскиС исслСдования, ΠΌΠΎΠΆΠ½ΠΎ ΡΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΡ… экспСримСнтов. Π­Ρ‚ΠΎ слуТит основой Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ…ΠΈΠΌΠΈΠΊΠΎ-тСхнологичСских процСссов Π² производствС Ρ†Π²Π΅Ρ‚Π½Ρ‹Ρ… ΠΌΠ΅Ρ‚Π°Π»Π»ΠΎΠ² ΠΈ сплаво

    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° износостойких Π΄Π΅Ρ‚Π°Π»Π΅ΠΉ ΠΈΠ· высокомарганцСвой ΠΌΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ стали 110Π“13Π›

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    The efficient operation of the technological equipment of machinery manufacturing enterprises and heavy industry without distortion depends in many respects on the strength of their details. This requires the study of the process of operation of the details, which are mainly rubbed with each other. These methods are widely used in obtaining high-quality steel castings. The simplest method of processing steel outside the oven is modification. Modified carbon steel is much more economical in properties approaches to leached steel, while modified steel leached by saving and investigation approaches leached steel with valuable and rare additives (Ni, Mo, Ti and other). Modification with alkaline and alkaline-earth metals greatly increases the quality of steel. The quality of steel is positively influenced by nitride-forming modifiersЭффСктивная Ρ€Π°Π±ΠΎΡ‚Π° тСхнологичСского оборудования для производства машин ΠΈ тяТСлой ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ Π±Π΅Π· искаТСний зависит Π²ΠΎ ΠΌΠ½ΠΎΠ³ΠΈΡ… ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΡΡ… ΠΎΡ‚ прочности ΠΈΡ… Π΄Π΅Ρ‚Π°Π»Π΅ΠΉ. Π­Ρ‚ΠΎ Ρ‚Ρ€Π΅Π±ΡƒΠ΅Ρ‚ изучСния процСсса Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π΄Π΅Ρ‚Π°Π»Π΅ΠΉ, ΠΌΠ΅ΠΆΠ΄Ρƒ ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΌΠΈ происходит Ρ‚Ρ€Π΅Π½ΠΈΠ΅. Π‘ΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‚ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΡˆΠΈΡ€ΠΎΠΊΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ ΠΏΡ€ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½ΠΈΠΈ высококачСствСнных ΡΡ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΎΡ‚Π»ΠΈΠ²ΠΎΠΊ. Π‘Π°ΠΌΡ‹ΠΉ простой ΠΌΠ΅Ρ‚ΠΎΠ΄ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ стали Π·Π° ΠΏΡ€Π΅Π΄Π΅Π»Π°ΠΌΠΈ Π΄ΡƒΡ…ΠΎΠ²ΠΊΠΈ – модификация. ΠœΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½Π°Ρ углСродистая ΡΡ‚Π°Π»ΡŒ ΠΏΠΎ своим свой ствам Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ экономичнСС Π²Ρ‹Ρ‰Π΅Π»ΠΎΡ‡Π΅Π½Π½ΠΎΠΉ стали, Ρ‚ΠΎΠ³Π΄Π° ΠΊΠ°ΠΊ модифицированная ΡΡ‚Π°Π»ΡŒ, выщСлачиваСмая ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ консСрвации ΠΈ исслСдования, Π²Ρ‹Ρ‰Π΅Π»Π°Ρ‡ΠΈΠ²Π°Π΅Ρ‚ ΡΡ‚Π°Π»ΡŒ с Ρ†Π΅Π½Π½Ρ‹ΠΌΠΈ ΠΈ Ρ€Π΅Π΄ΠΊΠΈΠΌΠΈ Π΄ΠΎΠ±Π°Π²ΠΊΠ°ΠΌΠΈ (Ni, Mo, Ti ΠΈ Π΄Ρ€.). ΠœΠΎΠ΄ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΡ с Ρ‰Π΅Π»ΠΎΡ‡Π½Ρ‹ΠΌΠΈ ΠΈ Ρ‰Π΅Π»ΠΎΡ‡Π½ΠΎΠ·Π΅ΠΌΠ΅Π»ΡŒΠ½Ρ‹ΠΌΠΈ ΠΌΠ΅Ρ‚Π°Π»Π»Π°ΠΌΠΈ Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ ΡƒΠ²Π΅Π»ΠΈΡ‡ΠΈΠ²Π°Π΅Ρ‚ качСство стали. На качСство стали ΠΏΠΎΠ»ΠΎΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π²Π»ΠΈΡΡŽΡ‚ Π½ΠΈΡ‚Ρ€ΠΈΠ΄Π½Ρ‹Π΅ ΠΌΠΎΠ΄ΠΈΡ„ΠΈΠΊΠ°Ρ‚ΠΎΡ€

    Условия провСдСния ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… исслСдований ΠΏΠΎ ΡΡƒΡˆΠΊΠ΅ Π·Π΅Ρ€Π½Π°

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    This paper examines the effect of heater power, speed of drying agent (air), adjustable slit width and number of revolutions of drying drum on the drying efficiency of the device, the moisture content of the rice pile coming out of the drum, and the chatness of rice in the rice pile. In addition, showed the changes in the value of the heating power and the drying efficiency of the device. The change of the adjustable slot size of the drying drum and the drying efficiency of the device consist of determining the effect of the moisture content of the pile of rice coming out of the drum and the effect of rice chatnash in the pile of rice. The experimental rice drying device in a stationary version was prepared at the β€œAndijan experimental- testing plant” JSC according to the design drawings developed by the Andijan Institute of Mechanical Engineering. Based on the results of theoretical studies, a drying drum with a diameter of 880 mm and a length of 1800 mm was adopted as the main working bodyΠ’ этой ΡΡ‚Π°Ρ‚ΡŒΠ΅ рассматриваСтся влияниС мощности нагрСватСля, скорости ΡΡƒΡˆΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π³Π΅Π½Ρ‚Π° (Π²ΠΎΠ·Π΄ΡƒΡ…Π°), Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΡƒΠ΅ΠΌΠΎΠΉ ΡˆΠΈΡ€ΠΈΠ½Ρ‹ Ρ‰Π΅Π»ΠΈ ΠΈ количСства ΠΎΠ±ΠΎΡ€ΠΎΡ‚ΠΎΠ² ΡΡƒΡˆΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ Π±Π°Ρ€Π°Π±Π°Π½Π° Π½Π° ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΡΡƒΡˆΠΊΠΈ устройства, содСрТаниС Π²Π»Π°Π³ΠΈ рисовой ΠΊΡƒΡ‡ΠΈ, выходящСй ΠΈΠ· Π±Π°Ρ€Π°Π±Π°Π½Π°, ΠΈ Ρ‡Π°Ρ‚ Π² ΠΊΡƒΡ‡Π΅ риса. ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, ΠΏΠΎΠΊΠ°Π·Π°Π½Ρ‹ измСнСния Π² Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΈ Π½Π°Π³Ρ€Π΅Π²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠΉ мощности ΠΈ эффСктивности ΡΡƒΡˆΠΊΠΈ устройства. ИзмСнСниС Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΡƒΠ΅ΠΌΠΎΠ³ΠΎ Ρ€Π°Π·ΠΌΠ΅Ρ€Π° слота ΡΡƒΡˆΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ Π±Π°Ρ€Π°Π±Π°Π½Π° ΠΈ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΡΡƒΡˆΠΊΠΈ устройства зависят ΠΎΡ‚ опрСдСлСния эффСкта содСрТания Π²Π»Π°Π³ΠΈ Π½Π° ΠΊΡƒΡ‡Ρƒ риса, выходящСго ΠΈΠ· Π±Π°Ρ€Π°Π±Π°Π½Π°, ΠΈ эффСкта рисового Ρ‡Π°Ρ‚Ρ‡Π°Π½Π° Π² ΠΊΡƒΡ‡Π΅ риса. Π­ΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ΅ устройство для ΡΡƒΡˆΠΊΠΈ риса Π² стационарной вСрсии Π±Ρ‹Π»ΠΎ ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΎ Π½Π° Β«Andijan Experimental Testing PartmentΒ» JSC Π² соотвСтствии с дизайнСрскими Ρ‡Π΅Ρ€Ρ‚Π΅ΠΆΠ°ΠΌΠΈ, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½Ρ‹ΠΌΠΈ АндиТанским институтом ΠΌΠ°ΡˆΠΈΠ½ΠΎΡΡ‚Ρ€ΠΎΠ΅Π½ΠΈΡ. ΠžΡΠ½ΠΎΠ²Ρ‹Π²Π°ΡΡΡŒ Π½Π° Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°Ρ… тСорСтичСских исслСдований, Π±Ρ‹Π» принят сухой Π±Π°Ρ€Π°Π±Π°Π½ Π΄ΠΈΠ°ΠΌΠ΅Ρ‚Ρ€ΠΎΠΌ 880 ΠΌΠΌ ΠΈ Π΄Π»ΠΈΠ½ΠΎΠΉ 1800 ΠΌΠΌ Π² качСствС основного Ρ€Π°Π±ΠΎΡ‡Π΅Π³ΠΎ Ρ‚Π΅Π»
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