By identifying areas compromise performance materials quality

V. N. Volchuk

Abstract


Purpose. Many of multiparameter technologies [1], which relates to the technology of production of rolls, are directed, for example, to implement the process of obtaining a material with a known set properties. Some of these properties by their physical nature may conflict with each other, for example, an increase in the hardness of iron or steel contrary to increase ductility and reduce brittleness. This raises the problem of determining the field, which will be called the area of compromise. Within the boundaries of the field of compromise contradiction between the criteria are valid for the user limits. Material and methods of research. The material for this study were taken cast iron mill rolls execution SSHHN (283 heats the sample to a total weight of 800 tons). In the manufacture of rolls used modifiers (Foundrisil, Elmag-600, Elmag-900, Vl 57 (М), Barinoc, Elgraf). Findings. Based on the analysis results of the active and passive experiments with graphoanalytical method identifies areas with the most effective combination of mechanical properties for section rolling rolls (area compromise quality criteria), depending on their chemical composition and structure parameters. To roll performance SSHHN region compromise combines the tolerance range of each of the mechanical properties: tensile strength 240…460 MPа, flexural strength 330…940 МРа, resilience 9…33 kJ / m2, Shore hardness 40…60 taking into account the full range of cooling conditions used in metallic form. Originality. For the first time defined the area of compromise with the most effective combination of mechanical properties working area roll barrels performances SSHHN on certain borders of components of the chemical composition and structure parameters. Practical value. The implementation of this method allows you to set the priority of the complex mechanical properties of the roll, to predict changes the process and automatically adjust its chemical composition.


Keywords


compromise area; chemical composition; cast iron; the mechanical properties; graphite

References


Большаков В. І. Етапи ідентифікації багатопараметричних технологій та шляхи їх реалізації / В. І. Большаков, В. М. Волчук, Ю. І. Дубров // Вісник НАН України. - 2013. - № 8. - С. 66-72.

Bolshakov V. I., Volchuk V.N., Dubrov Yu.I. Etapy identyfikatsiyi bahatoparametrychnykh tekhnolohiy ta shlyakhy yikh realizatsiyi [Stages identification multiparameter technologies and ways to implement them]. Visnyk NAN Ukrayiny [National Library of Ukraine]. No. 8, 2013,pp. 66-72. (in Ukrainian).

Большаков В. И. Способ определения области компромисса критериев качества многокритериальных технологий / В. И. Большаков, В. М. Волчук, Ю. И. Дубров / Свідоцтво про реєстрацію авторського права України на твір № 53769 від 18.02.2014 р. – 5 с.

Bolshakov V.I., Volchuk V.N. and Dubrov Yu..I. Sposob opredeleniya oblasti kompromissa kriteriev kachestva mnogokriterial’nyh tehnologiy [The method for determining the area of compromise quality criteria of multi-criteria Technology]. Svidotstvo pro reiestratsiiu avtorskogo prava na tvir № 53769 vid 18.02.2014 [The certificate of registration of copyright in a work of Ukraine of 02.18.2014 № 53769]. 5 p. (in Russian).

Мерло О. Е. Качество чугунных прокатных валков / О. Е. Мерло. – Москва : Металлургия, 1966. – 247 с.

Merlo O.Ye. Kachestvo chugunnykh prokatnykh valkov [Quality cast iron rolls]. Moscow : Metallurgiya Publ., 1966, 247 p. (in Russian).

Бунин И. Н. Металлография чугуна / И. Н. Бунин. – Москва : Металлургиздат, 1962. – 392 с.

Bogachev I.N. Metallografija chuguna [Metallography of iron]. Moscow : Metallurgizdat, 1962, 392 p. (in Russian).

Кривошеев А. Е. Литые валки / А. Е. Кривошеев. – Москва : Металлургиздат, 1957. - 360 с.

Krivosheev A.E. Litye valki [Cast rolls]. Moscow : Metallurgizdat, 1957, 360 p. (in Russian).

Гуляев А. П. Металловедение / А. П. Гуляев. - Москва : Металлургия, 1986. - 544 с.

Gulyayev A.P. Metallovedeniye [Metallurgy]. Moscow : Metallurgiya Publ., 1986, 544 р. (in Russian).

Metals Reference Book. Ed. by Colin J. Smithells. Butterworths, 1976, 1566 p.

Бунин К. П. Строение чугуна / К. П. Бунин, Ю. Н. Таран. – Москва : Металлургия, 1972. – 160 с.

Bunin K.P. and Taran Yu.N. Stroenie chuguna [The structure of cast iron]. Moscow : Metallurgija Publ., 1972, 160 p. (in Russuian).

Материаловедение / [Ю. М. Лахтин, В. П. Леонтьева]. − Москва : Машиностроение, 1990. - 528 с.

Lakhtin Yu.M. and Leont'yeva V.P. Materialovedeniye [Materials]. Moscow : Mashinostroyeniye Publ., 1990, 528 р. (in Russian).

Durand-Charre, M. Microstructure of steels and cast irons. Springer, 2004, 404 p.

Berns H. and Theisen W. Ferrous Materials: Steel and Cast Iron.Springer, 2008,418 p.

Joseph R.D. Cast Irons. ASM International, 1996, 494 р.

Elliott R. Cast iron technology.Butterworths, 1988, 244 p.


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