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SETSCI - Volume (2018)
ISAS 2018 - Ist International Symposium on Innovative Approaches in Scientific Studies, Kemer-Antalya, Turkey, Apr 11, 2018

The Effect of Cutting Parameters on Surface Hardness Change in Turning of 16MnCr5 Steel (ISAS 2018_159)
Ümmü Gamze Durutürk1*, Kağan Telek2, Ahmet Özdemir3
1İmalat Mühendisliği, Gazi Üniversitesi,Fen Bilimleri Enstitüsü , Ankara, Turkey
2İmalat Mühendisliği, Gazi Üniversitesi,Fen Bilimleri Enstitüsü , Ankara, Turkey
3İmalat Mühendisliği, Gazi Üniversitesi,Teknoloji Fakültesi  , Ankara, Turkey
* Corresponding author: gamzed@kalelisaft.com
Published Date: 2018-06-23   |   Page (s): 179-179   |    71     4

ABSTRACT Cementation steels; surface hardness is high and abrasion resistant materials.Also, cementation steels are materials with the alloyed or non-alloyed structure which materials used in the manufacture of parts which are resistant to shock and variable loads.Additionally, these materials can be used for required soft and toughness material center. Cementation steels heat treatment, before and after machining, affects the mechanical properties and surface quality of the final product.

In this study, the effect of 16MnCr5 (1.7131) cementation steel with different cutting parameters on the surface after heat treatment was investigated. While experiments were being designed, Taguchi approach was used to determine the cutting performance with minimum cost and to increase the quality. Cutting parameters are divided into three groups. These are tip radius, feedrate and plunge depth. The experimental groups were subdivided into two groups. First experimental group was subjected to the normalization heat treatment before the processing. 27 specimens were prepared for both experimental groups. The samples were processed according to the specified test parameters and then the surface roughness was measured. Before the cementation process, the microhardness of the materials was made from the surface to the core, hardness scans were made at 0,1 mm intervals with the Vickers hardness device. Gas cementation was carried out from the cementation processes. Hardness scans were made at intervals of 0,1 mm to determine effective cementation value.

The surface hardness of the 16MnCr5 affected from cutting parameters. Surface rougness also affected from edge radius and feed rate have been obtained before and after heat treatment. Experimental result are consistent with the literature findings.  
KEYWORDS 16MnCr5 (1.7131), Turning, Roughness, ECD, Variation Analysis
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