INVESTIGATION OF MILLING STRATEGIES EFFECT ON MICROHARDNESS OF A TYPICAL CURVED SURFACE

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HASSANPOUR HAMED; SHAJARI SHAGHAYEGH; RASTI AMIR; SADEGHI MOHAMAD HOSSEIN

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:2 Page(s): 34-40

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Title

INVESTIGATION OF MILLING STRATEGIES EFFECT ON MICROHARDNESS OF A TYPICAL CURVED SURFACE

Author(s)

HASSANPOUR HAMED | SHAJARI SHAGHAYEGH | RASTI AMIR | SADEGHI MOHAMAD HOSSEIN | Issue Writer Certificate

Keywords

MILLING STRATEGIESQ2

SURFACE MICROHARDNESSQ2

TAGUCHI METHODQ1

SURFACE TOPOGRAPHYQ2

Abstract

Employing complex surfaces in different industries such as aerospace and die and mold is increasing. For milling of such surfaces, taking factors such as strategies and machining parameters which affect the machinability into consideration is necessary. The objective of this study is to investigate the effect of different strategies and machining parameters on microhardness of a typical curved surface (convex) of stainless steel 1.4903. The cutting tool used in this study was ball nose end mill coated TiN and the strategies employed were Raster, 3Doffset, Spiral and radial. Design of experiments was done using TAGUCHI METHOD. The input parameters were cutting speed, feed rate and step over. After conducting experiments, surface layers hardness of milled samples were measured. The results showed that various tool paths have different influence on microhardness of milled surfaces. Regardless of cutting condition, surface hardness after machining in all strategies was more than the primary hardness of the workpiece material. Spiral strategy provided the maximum hardness and radial strategy the minimum hardness. In addition, increasing the feed rate, cutting speed and step over, increased surface hardness and step over had the least influence on hardness. The maximum hardness magnitude was reported in cutting speed of 180 m/min, feed rate of 0.18 mm/tooth and step over of 0.7 mm which shows 56% increase.

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APA: Copy

HASSANPOUR, HAMED, SHAJARI, SHAGHAYEGH, RASTI, AMIR, & SADEGHI, MOHAMAD HOSSEIN. (2015). INVESTIGATION OF MILLING STRATEGIES EFFECT ON MICROHARDNESS OF A TYPICAL CURVED SURFACE. MODARES MECHANICAL ENGINEERING, 15(2), 34-40. SID. https://sid.ir/paper/179738/en

Vancouver: Copy

HASSANPOUR HAMED, SHAJARI SHAGHAYEGH, RASTI AMIR, SADEGHI MOHAMAD HOSSEIN. INVESTIGATION OF MILLING STRATEGIES EFFECT ON MICROHARDNESS OF A TYPICAL CURVED SURFACE. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(2):34-40. Available from: https://sid.ir/paper/179738/en

IEEE: Copy

HAMED HASSANPOUR, SHAGHAYEGH SHAJARI, AMIR RASTI, and MOHAMAD HOSSEIN SADEGHI, “INVESTIGATION OF MILLING STRATEGIES EFFECT ON MICROHARDNESS OF A TYPICAL CURVED SURFACE,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 2, pp. 34–40, 2015, [Online]. Available: https://sid.ir/paper/179738/en

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