Effect of ultrasonic vibration on the process of wire drawing

In this study, the effects of ultrasonic vibrations on the lubrication between die and wire and wire drawing force in wire drawing process were investigated. In the work done, the lubrication effect and the drawing force in the wire drawing process are compared comparatively by using the conventional wire drawing method and the ultrasonic effect. Drawing force is measured with a dynamometer. In wire drawing process, evaluations were made by comparing macro images of wire surface in determining the effect of ultrasonic vibration on lubrication. The time-dependent force change graph obtained from the experimental studies was used to reveal the force differences between conventional wire drawing and ultrasonic vibrating wire drawing. At the end of the experiment, a sample with reduced diameter was taken and the surface quality of the sample was examined under a microscope. According to the results of the tests ultrasonic vibratory wire drawing showed a reduction of force between 9% and 15% in drawing force according to tradition. According to the studies made on the microscope, the lubrication ability of the wire surface was increased by the ultrasonic effect. For this reason, it has been found that the wire surfaces drawn by ultrasonic vibration are smoother.

Ultrasonik titreþimin tel çekme iþlemine etkisi

Bu çalýþmada tel çekme iþleminde ultrasonik titreþimlerin kalýp ile tel arasýndaki yaðlamaya ve tel çekme kuvvetine etkileri araþtýrýlmýþtýr. Yapýlan çalýþmada geleneksel tel çekme yöntemi ile ultrasonik etki kullanýlarak tel çekme iþleminde yaðlama etkisi ve çekme kuvveti karþýlaþtýrmalý olarak incelenmiþtir. Çekme kuvveti dinamometre ile ölçülmüþtür. Tel çekme iþleminde ultrasonik titreþimin yaðlamaya olan etkisini belirlemede tel yüzeyine ait makro görüntüler karþýlaþtýrýlarak deðerlendirmeler yapýlmýþtýr. Deneysel çalýþmalardan elde edilen verilerle zamana baðlý kuvvet deðiþim grafiði oluþturularak geleneksel tel çekme ile ultrasonik titreþimli tel çekme arasýndaki kuvvet farklýlýklarý ortaya konmuþtur. Deney sonunda çapý düþürülen telden numune alýnarak telin yüzey kalitesi mikroskopta incelenmiþtir. Deney sonuçlarýna göre ultrasonik titreþimli tel çekmede geleneksele göre çekme kuvvetinde %9 ile %15 arasýnda kuvvet azalmasý görülmüþtür. Mikroskopta yapýlan incelemelere göre tel yüzeyinin sabun alma kabiliyetinin ultrasonik etki ile arttýðý görülmüþtür. Bu nedenle ultrasonik titreþimle çekilen tel yüzeylerinin daha pürüzsüz olduðu tespit edilmiþtir.