International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
“ANALYTICAL AND EXPERIMENTAL INVESTIGATION OF CONTRIBUTION OF BURNISHED PARAMETERS ON ROUGHNESS AND MICRO HARDNESS OF AA6340’’ Ghodake sagar1, Nikam Sagar2, Ghodake Pratik3, Thakare shital4, Prof.Ghodake A.P.5 BE Student, Department of Mechanical Engineering, SND COE &RC, Maharashtra, India BE Student, Department of Mechanical Engineering, SND COE &RC, Maharashtra, India 3BE Student, Department of Mechanical Engineering, SND COE &RC, Maharashtra, India 4BE Student, Department of Mechanical Engineering, SND COE &RC, Maharashtra, India 5 Assi professor, Department of Mechanical Engineering, SND COE &RC, Maharashtra, India 1 2
---------------------------------------------------------------------***--------------------------------------------------------------------In the present scenario of manufacturing good Abstract - Now a day, every material is work satisfactorily under any conditions with high efficiency of performance due their highly improved properties. Among all properties the surface finish has their maximum valuation. The considerable attention is made towards quality of the surface finish. The surface finish not only plays important role in aesthetic look but it majorly affect the performance parameters of the material like load carrying capacity, fatigue life , surface
surface finish and dimensional accuracy plays an important role. A good surface finish is essential in many applications, e.g. in the moulds and dies, bioengineering, semiconductor and optical industries. In the injection molding process, the surfaces finish required is Ra= 0.1μm or less. Surface finish is important not only as an indication of expert workmanship, but it has effects on the life and function of the component. Finishing processes such as grinding, polishing, lapping and honing are commonly employed to improve surface finish. It also improves exterior quality of surface.
hardness , wear and corrosion resistance.
1.1 Sub Heading 1
Key Words: Roughness,micro-hardness,micro-stucture
1.1 Importance of the Problem
1. INTRODUCTION The surface roughness is the parameter which directly gives surface quality of material in the form of micro irregularities. The surface finish is obtained by conventional machining operations like turning, milling and grinding. The conventional operations have greater surface roughness which has limited surface finish. Machining operations are used to produce a desired shape and size by removing excess stock from a blank in the form of chips. The work piece is subjected to intense mechanical stress and localized heating by tools having one more shaped cutting edges. Each cutting edge leaves its own mark on the mechanical surface. Also the work piece and tool together with the machine on which they are mounted form a vibratory system liable to random, forced or induced vibration. Due to these reons, the surface of the machined component is more or less damaged. Surface finish and surface integrity are the terms used to denote the degree of such damage. The above term describes the geometrical and micro structural quality of machined surface © 2017, IRJET
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Impact Factor value: 5.181
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The main importance of this work is getting required surface quality and improvement in the properties of materials. To obtain these properties the theory behind the surface has to take in to consideration. 1.1.1 Parameters that affect surface finish 1. Roughness: Roughness consist of the finer irregularities in the surface texture, usually including those irregularities which results from the inherent action of the production process. They include transverse feed marks and other irregularities within the limit of roughness width cutoff. 2. Waviness: The widely spaced component of surface texture and generally of wider space than the roughness width cutoff, waviness may results from such factors as machine or work deflection, vibration, heat treatment etc. It consists of all surface irregularities whose spacing is greater than the roughness sampling length (about 1mm). 3. Lay: The direction of predominant surface pattern, ordinarily determined by the production method used. The lay depends upon the orientation of the work piece and the cutting tool on the machine as well as the nature of the relative motion between the two. 4. Flaws: Irregularities which occurs at one place or at relatively infrequent or widely varying intervals in the surface. Flaws could be due to inherent defects, such as ISO 9001:2008 Certified Journal
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