THEORETICAL ANALYSIS OF SEPARATING PROCESS AT HOT CUTTING BY SHEARS
Keywords:damage evolution model, shears, cutting force
AbstractPurpose. Theoretical analysis of metal separating process during the hot cutting by shears for expansion the idea about the process and law of damage evolution to influence the curve of cutting force at the mathematical simulation. Project/methodology/approach. The finite-elements model of hot cutting process by shears is developed. On the first research stage it was performed a comparison of simulation results and experimental data. It was obtained a good coincidence for the dependencies of cutting force and ingot geometry after cutting. And the function of damages evolution has a complex image. On the second stage the analysis of damages evolution model to influence the curve of cutting force was done. Findings. The damages evolution regularities substantially to influence the results of mathematical simulation of hot cutting process by shears. Declining intensity of damage evolution in the metal promotes the approximation of calculation values of cutting force to experimental data. It is specified, that using the curves of cutting force one can get information about the damages evolution regulations. There is a necessity to carry on wider range of researches for expansion the idea about the process. Originality/value. Job results can be used for the analyses of separation operations in a rolling production.
Borovik P. V. Sovershenstvovanie tehnologii i oborudovanija processa prodol'noj rezki tolstyh gorjachekatanyh listov na diskovyh nozhnicah. Dis. na soiskanie uchen. stepeni kand. tehn. nauk, spec. 05.03.05 [Perfection of technology and equipment of the process of the longitudinal cutting of hot-rolled thick sheets on disk shears Ph.D-Thesis]. Kramatorsk, 2008. 225 p.
Liu G. R. Quek S. S. The Finite Element Method: A Practical Course, 2003. 348 p.
Borovik P. V. Usatjuk D. A. Novye podhody k matematicheskomu modelirovaniju tehnologicheskih processov obrabotki davleniem [New approaches to mathematical simulation of technological processes by pressure processing]. Alchevsk, DonDTU, 2011. 299 p.
Borovik P. V. Sbornik nauchnyh trudov DGMI [Collected papers of Donbass State Technical University]. Alchevsk, 2006, no. 22, pp. 166- 172.
Poluhin P. I. Gun G. Ja. Galkin A. M. Soprotivlenie plasticheskoj deformacii metallov i splavov [Resistance of plastic strain of metals and alloys]. Moscow: Metallurgija, 1976. 488 p.
Wisselink H. H. Title: Analysis of Guillotining and Slitting, Finite Element Simulations. Ph.D-Thesis. Twente, The Netherlands, 2000.
Kolmogorov V. L. Bogatov A. A. Migachev B. A. i dr. Plastichnost' i razrushenie [Plasticity and fracture]. Moscow: Metallurgija, 1977. 336 p.
Borovik P. V. Sbornik nauchnyh trudov Vestnik nacionalnogo tehnicheskogo universiteta HPI [Collected papers of Bulletin of National Technical University HPI]. Kharkiv, 2011, no. 47, pp. 76-80.
Celikov A. I. Smirnov V. V. Prokatnye stany [Rolling mills]. Moscow: Metallurgizdat, 1958. 432 p.
Konovalov Ju. V. Ostapenko A. L. Ponomarev V. I. Raschet parametrov listovoj prokatki [Calculation of sheet rolling parameters]. Moscow: Metallurgija, 1986. 430 p.
Bel'chenko G. I. Gubenko S. I. Osnovy metallografii i plasticheskoj deformacii stali [Bases of a metallography and plastic strain of steel]. Donetsk: Vischa shk., 1987. 240 p.
Borovik P. V. Lucenko V. A. Sbornik nauchnyh trudov DonGTU [Collected papers of Donbass State Technical University]. Alchevsk, 2010. no. 32, pp. 175-181.