Study of Wear Characteristics of AISI H11 Steel

In metal casting and forming industries, the wear of dies continues to be a great concern to the automotive industry due to increasing die maintenance cost and scrap rate. The demand to reduce the use of lubricants and increase tool life in pressure die casting has resulted in increased research on the sliding contact between the tool and the metal. Hence it has been recognized that the deforming conditions, such as - normal load, sliding speed, sliding time etc. affect the performance of the operation to a greater extent [3]. The objective of the present work is to assess the effect of the sliding parameters on the wear of AISI H11 steel. It is used as the die material in many hot working processes and other press working industries. The experiments have been conducted on PIN ON DISK (TR-20LE-PHM-400). The wear experiments were performed on pins made of AISI H11 steel and disks made of Aluminium 6082. Design of experiment with three independent factors (normal load, sliding speed, sliding time) has been used to develop relationships for predicting weight loss of pins caused by rubbing action[2]. The weight loss of pins has been measured within 10-4 g precision.