Analysis of the Forces in Micromilling of Hardened AISI H13 Steel with Different Grain Sizes Using the Taguchi Methodology | Zendy

Lauro Carlos Henrique | Zendy; Brandão Lincoln Cardoso | Zendy; Ribeiro Filho Sérgio Luiz Moni | Zendy; Baldo Denison | Zendy

Open Access

Analysis of the Forces in Micromilling of Hardened AISI H13 Steel with Different Grain Sizes Using the Taguchi Methodology

Author(s) -

Lauro Carlos Henrique,

Brandão Lincoln Cardoso,

Ribeiro Filho Sérgio Luiz Moni,

Baldo Denison

Publication year - 2014

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

ISSN - 1687-8132

DOI - 10.1155/2014/465178

Subject(s) - materials science , taguchi methods , end mill , surface micromachining , hardened steel , metallurgy , machining , grain size , surface roughness , tool steel , surface finish , mechanical engineering , composite material , engineering , medicine , alternative medicine , pathology , fabrication

The micromachining process has been applied to the free form and micromolds markets. This has occurred due to the growth in demand for microcomponents. However, micromachining of hardened steels is a challenge due to the reduction in tool life and the increase of the surface roughness when compared with the macromachining process. This paper focused on the analysis of micromilling forces on hardened AISI H13 steel with different grain sizes. Experimental tests were carried out on workpieces with different austenitic grain sizes and a hardness of 46 HRC. Micro-end-mill cutters with a diameter of 0.5 mm and (TiAl)N coatings were applied in the milling of workpieces of 11 × 11 mm. The input parameters were two radial depths of cut, two cutting speeds, and two feed rates. The influence of the input parameters on the response cutting force was analyzed using the Taguchi method. Finally, considering the large grain size, the cutting forces in the x -, y -, and z -axes direction were small.

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