Tool flank wear analyses on AISI 440 C martensitic stainless steel by turning

Abstract

Hard turning of materials is a process where dimensional accuracies, dimensional controls and surface roughness are easily obtained. Currently hard components are produced by hard machining in a very short time which also saves on cost. Martensitic stainless steel is difficult to cut due to the presence of high amount of chromium and makes the material harder. AISI 440 C hardness is maintained through induction hardening process. The cutting tool used for this material is normally a super hard cutting tool like CBN and PCBN tools and less tool wear is possible. Minimising tool wear is the main criteria of the machining process. The influence of flank wear was due to abrasive action of hard martensitic carbides of the work material at low cutting speed, and low feed rate. The crater wear also formed and was due to abrasive action of the saw tooth chips and also by heat at cutting zone. Saw tooth chips were produced by while machining martensitic stainless steel and the rough surface of the chips responsible for occurrence of the crater wear.

Statistical analysis of AISI304 austenitic stainless steel machining using Ti(C, N)/Al2O3/TiN CVD coated carbide tool

“…Authors have noted that cutting speed is the main parameter which affect flank wear and as cutting speed increases to 175 m/min, the flank wear decreases. Hasan and Thamizhmanii (2010) analyzed tool wear during turning of AISI 440C martensitic stainless steel using CBN cutting tool. They found that flank and crater wears were caused by severe abrasion phenomenon and also by high generation of heat during machining especially at low cutting speed, and low feed rate.…”

Análisis del rendimiento del torneado utilizando coeficiente de vida útil en relación al volumen de metal cortado

“…Algunos investigadores afirman que el desgaste del flanco es el factor más importante para evaluar el desgaste de la herramienta de corte [9][10].…”

Analysis of Tool Wear Patterns in Rough Turning of Chromium Hardfacing Material

“…During turning one of the important factors is tool wear whether it is soft or hard machining. Flank wear is the most important wear which will affect the smoothness of the product, cost of operation and performance [5]. Tool wear mechanisms are generally influenced by four phenomenons namely: abrasion, thermal softening, diffusion and notching at depth of cut and trailing edge [6].…”