Effects of process parameters on fatigue behavior and surface integrity of tool steel produced by electrical discharge turningAuswirkungen von Prozessparametern auf das Ermudungsverhalten und die Oberflachenintegritat von durch Funkenerosionsdrehen hergestelltem Werkzeugstahl
Küçük Resim Yok
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Electrical discharge machining is used in the production of countless parts with complex geometries and micro dimensions, from many elements of industrial molds to parts of motors and pumps. Also, most of these parts are cylindrical and it is always more meaningful to study their rotational fatigue behavior to predict their response during their operation. This study concentrated on the impacts of machining parameters on the surface quality and fatigue behavior of tool steel shaped by electrical discharge turning. The results based on Taguchi methodology have shown that discharge current affects R-a and R-z more, and pulse duration more affects the mean spacing of profile irregularities, S-m. As a result of the heat affected depth in the machined region, which changes in proportional with the processing parameters, the microhardness decreased from the sample surface to the core. The maximum hardness was measured at current of 12 A, pulse duration of 3 mu s and pulse interval of 7 mu s. According to the fatigue tests, it was found that the fatigue life decreased with the increase in R-z and S-m values. Moreover, high microhardness and thick recast layer reduced the fatigue strength of the samples with relatively smooth surface topography.
Açıklama
Anahtar Kelimeler
electrical discharge machining (EDM), fatigue behavior, microhardness, surface topography, tool steel
Kaynak
Materialwissenschaft Und Werkstofftechnik
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
54
Sayı
1
