Numerical investigation of dimple-texturing on the turning performance of hardened AISI H-13 steel

Abstract

Forming micro-dimples nearer to the cutting edge on the rack face of the tungsten carbide cutting inserts will positively influence the machinability. However, it is challenging to machine the perfect micro-dimple dimensions by utilizing the available machining techniques. Finite element analysis can be an efficient way to observe the influence of dimple-texture area density, micro-dimple size, and various micro-dimple shapes on cutting inserts' machinability. This paper numerically analyses the impact of micro-dimple-textured cutting inserts in dry machining of AISI H-13 steel using AdvantEdge (virtual machining and finite element analysis software). Micro-dimples are formed on the rack face of tungsten carbide cutting inserts to observe the effect of dimple-textured cutting inserts on machinability compared to non-textured cutting inserts in terms of micro-dimple shape, micro-dimple size, and micro-dimple area density ratio. Their outcomes are analysed in terms of chip-insert contact length, main cutting force, and thrust force. It is observed that micro-dimple textured cutting inserts exhibit minimal main cutting force and thrust force in line with increasing the cutting insert life span. The abrasive wear was reduced in dimple-textured cutting inserts due to minimal contact between the cutting insert and chip developed compared to non-textured cutting inserts.

An Experimental Investigation of Dimple-Texturing on the Tribological Performance of Hardened AISI H-13 Steel

“…Based on information obtained from the literature study, the diameter, depth, pitch, and area density ratio of the dimple-texture pattern were derived. The linear distance between two successive dimples is referred to as dimple pitch, and the ratio between the dimpled-textured area and the untextured area is defined as an area density ratio or dimple ratio [31]. Table journal.ump.edu.my/ijame ◄ 3. details the parameters of dimple-texture patterns.…”

Deformation mechanism finite element analysis and die geometry optimization of magnesium alloys by equal channel angular processing

“…magnesium and magnesium alloys Taylor coefficient are larger due to the hcp structure relative to the face-centered cubic and body centered cubic, so its k is larger, and the potential through grain refinement method to improve the magnesium alloy plastic of is much greater than the iron alloy, aluminum alloy, etc. [14][15][16]. The main reason why finer-grained materials are stronger and harder than coarser-grained materials are that fine materials have a relatively large grain boundary area [17,18].…”