An attempt has been made to investigate the machinability of zirconia toughened alumina (ZTA) inserts while turning AISI 4340 steel. The insert was prepared by powder metallurgy process route and the machining experiments were performed based on Response Surface Methodology (RSM) design called Central Composite Design (CCD). The mathematical model of flank wear, cutting force and surface roughn...

060A4 steel (Chinese standard) is a with good machinability, which very popularly used in mechanical engineering. Therefore, the study of solutions for improvement quality and productivity when machining this type has great technical economic significance. In study, multi-objective optimization process been performed milling on vertical machine. The cutting tool face cutter made High Speed Stee...

abstract: the lifetime of a cutting tool is an important and determinant parameter for evaluating its performance. the amount of tool abrasion affects seriously dimensions and surface quality of the working piece so that one of the main factors to determine the lifetime of a tool is the level of its wearing. for this purpose, an abrasion standard is defined for each particular tool above which ...

Abstract This study compares two tools, HSS M42 and TiN Coated twist drill bits, in order to determine which tool has the better material removal rate (MRR). Drill bits were of high speed steel (HSS M42) use Novel coating Titanium Nitride on this study. The machining is done a experimental specimen made aluminium alloy AA6063. both tools measured CNC drilling sets 20 specimens each. Spindle spe...

Plastic based products spread all over the world in many aspects of life. The ability to substitute other materials is getting stronger and wider. The use of plastic materials increases and become unavoidable. Plastic based mass production requires injection process as well Mold. The milling process of plastic mold steel material was done using HSS End Mill cutting tool that is widely used in a...

In the present study, high-speed steel (HSS)/ductile cast iron (DCI) composite roll was manufactured by electroslag remelting cladding (ESRC) technology. The compositional variation, grain size, microstructure, hardness, and tensile strength of HSS layer bimetallic interface were investigated systematically. obtained results illustrated that chemical composition (HSS) changed dramatically due t...

Abstract The Taguchi optimization technique was utilized to determine the optimal milling parameters that can be used in end face CNC operation of polypropylene+5wt.% quarry dust using high-speed steel (HSS) tool. Three input i.e. feed rate (f), cutting speed spindle (N) and depth cut (d c ) were optimized while considering surface roughness (Ra) machined composite material removal (MRR) during...

OBJECTIVES To assess the internal consistency and factor structure of the abridged Spanish version of the Berger HIV Stigma Scale (HSS-21), to provide evidence for its convergent and discriminant validity, and to describe perceived stigma in an urban population from northeast Mexico. METHODS Seventy-five HIV-positive men who have sex with men (MSM) were recruited. Participants answered the Sp...

In order to enhance the fitness of product and in improve productivity turning operations, greater amount challenges have been faced. this paper, we made a comparative analysis HSS carbide coated drills while machining with H13 steel plates. For drilling operation, process parameters were analysed using Taguchi design experiments. The response performance characteristics surface roughness die p...