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Modeling and Simulation of Fluid Field and Temperature Field in High Silicon Aluminum Alloy EDM Hole Machining

Author: LiuTingZuo
Tutor: HuFuQiang
School: Harbin Institute of Technology
Course: Aviation Aerospace Manufacturing Engineering
Keywords: high silicon aluminum alloy EDM hole machining fluid field temperaturefield simulation
CLC: TG661
Type: Master's thesis
Year: 2013
Downloads: 51
Quote: 0
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Abstract


High silicon aluminum alloy is widely used in automobile and electronic industrybecause of its good heat conduct ability, abrasion resistance ability and low density.When use the traditional cutting method machine a high silicon aluminum alloy, thecutting tools wear heavily because the increase of silicon, and at the same time it’slimited in hole machining process. The EDM solve the problem very well. To researchthe law in the hole machining process on a high silicon aluminum base has a greatsignificance in widening the use of high silicon aluminum.This paper use the Fluent sotfware to build a fluid model of the fluid medium.Based on the fluid model, research the distribution of pressi^e and velocity and debrisin the medium flow and analysis the affection to the machining result by the inletpressiffe.In the micro vision,this paper use the Abaqus sotfware build a single pulse heatconduct model. By the simulation research the mechanism of material erosion in theheterogeneous micro structure condition; at the same time,use the connection betweenelectronic parameter and model condition, research the affection to the cater volume bythe electronic parameter.By the ejqjeriment of high silicon aluminum alloy hole machining to prove theanalysis result above. First, change the inlet pressure, current and pulse durationseparately,research the affection to the machining efficiency and electrode erosion,prove the simulation result; Then by the means ofSEM, observe the cross section of thehole and discharge debris, find supercooled tissue on the high silicon aluminum alloypart surface and in the discharge debris, and at the same time find the dropped silicongrain.these discovery prove the discharge erosion analysis result.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Special machine tools and processing > Electric machines and their processing
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