Abstract
The purpose of this research is to investigate the effect of heat treatment parameters on the tool life and surface roughness of dual phase steel. Optimization of machining parameters (cutting speed, feed and depth of cut) is carried out for the machinability tests on medium carbon low alloy steel. Taguchi’s method of design is used to carry out machinability tests. Analysis of variance (ANOVA) is carried out to determine the relative contribution of machining parameters on tool life and surface roughness. Microstructure analysis is carried out to ascertain the machining behavior of the steel. Results have shown that, depth of cut and cutting speed are the most significant factors contributing on the variation of the tool life and surface roughness. Optimized machining parameters are calculated in order to obtain higher tool life and lower surface roughness value.
Highlights
Machinability of material plays an important role in the industry to improve their manufacturing capacity and to reduce the cost of the component
The present investigation mainly focuses on the effect of machining parameter on tool life (TL) and surface roughness (SR) of dual phase steels (DPS)
First phase covers the statistical analysis of TL and SR results and second phase involves combined optimization of TL and SR of DPS
Summary
Machinability of material plays an important role in the industry to improve their manufacturing capacity and to reduce the cost of the component. Dual phase microstructure in a medium carbon and/or alloyed steel provides a high strength, and a good formability and yielding without serrations[1]. In this type of microstructure, soft ferrite and hard martensite phases are present which induces the ductility and the strength for the steel. The improvement in the mechanical properties via forming a dual phase microstructure in the steel supplies the benefit of reducing the weight of systems[4]. The studies on dual phase steels (DPS) have been focused generally on the microstructural and mechanical characterizations after intercritical heat treatment applications[5]. The machinability of these materials is very important property which should be focused on
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