ANALISIS DISTRIBUSI TEMPERATUR BENDA KERJA PADA PROSES PEMBUBUTAN TITANIUM TI6AL4V DENGAN PENDINGIN CRYOGENIC MENGGUNAKAN FEM SOFTWARE DEFORM INTEGRATED 2D

BOBIE, BOBIE and Mohruni, Amrifan Saladin (2019) ANALISIS DISTRIBUSI TEMPERATUR BENDA KERJA PADA PROSES PEMBUBUTAN TITANIUM TI6AL4V DENGAN PENDINGIN CRYOGENIC MENGGUNAKAN FEM SOFTWARE DEFORM INTEGRATED 2D. Undergraduate thesis, Sriwijaya University.

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Abstract

Machining process is a process that is carried out by changing the shape of metal material to what we want. One type of machining process is the turning process. Turning process is a process that is carried out by means of the workpiece spindle and tool cutting workpiece. Turning is very influential on the use of the parameter that exist in the machining. Turning parameters consist of cutting speedm feeding speed, feeding, depth of cutting, length of cutting, and cutting time. One of the effects caused by the turning process is the increase in temperature, this is due to friction between the tool and the workpiece. Temperature rise that occurs can have a negitve effect on the tool and workpiece. Overheated on the tool can cause wear on the tool, cab shorten tool life and reduce the economic value of the tool. Whereas overheated ai workpiece can result in bad surface rougness and the result of turning are not as expected. Heat zone in turning process consists of a primary zone, a secondary zone ana workpiece interface.according to the times, turning process can occur in any material, including titanium. Titanium is commonly used in the aircraft industry and other industries. When doing the machining process in titanium there difficulty because titanium has a low thermal conductivity, so that the heat in the friction area does not spread and results in tool wear so that it can break the tool. Besides, the results obtained when machining titanium without suitable cooling will make the machining results not as expected. Use cooling during te machining process aims to increase tool life, reduce cutting temperatures, reduce surface roughness and increase productivity in producing objects that have been machined process. Many types of coolers are in the form of solid, liquid or gas. Example of a solid cooler that we can find in everyday is grease. Example of liquid form coolers that we can find in everday are oil, bromus, vegetables oil and others. Examples of gas form coolers that we can find in daily life are cryogenic. In physics, cryogenic is the production and behavior of materials at very low temperatures. Cryogenic coller is a type of cooling that is enviromentally friendly and efficient for maintaining the temperature of the cutting temperature. Cryogenic coolers used machining process have temperatures ranging below -100oC. There cooler usually use a lot of gases such a s methane, argon, hydrogen, nitrogen, helium and oxygen. This study of analyzes the temperature distribution that occurs during the titanium machining process with cryogenic cooler using the FEM DEFORM 2D method. This sudy anylyzes the temperature that occurs when the cutting process. Finite element method (FEM), is a numerical method of problems of engineering and mathematical physics. Typical problem areas of interest include structural analysis, heat transfer, fluid flow, mass transport and electromagnetic potential. Finite element meyhod formulation of the problem result in system of algebraic equations. This study uses titanium Ti6Al4V as workpieces and uses carbide tool with TiAln layers. Length of the workpiece used is 12 mm and width 1.5 mm. Cutting length used this study is 2 mm. In addition, this study uses diferent parameters, as like cutting speed of 40 and 50 m/min and uses feed of 0.2 and 0.3 mm/rev. Based on data obtained from the simulation, the temperature that occurs in the workpiece at the cutting speed of 40 m/min and feed of 0.2 mm/rev the mount of 778oC and for cutting speed of 40 m/min and feed 0.3 mm/rev a mount of 848oC. While the simulation results for a cutting speed of 50 m/min and feed 0f 0.2 mm/rev a mount of 850oC and a cutting speed of 50 m/min and feed 0f 0.3 mm/rev a mount of 875oC, an incease in temperature for each difference in machining parameters. Result the study is if use of high cutting speed will produce high temperatures and also the use high feeds will produce high temperatures as well. Besides, greater the friction that occurs it will produce a igh temperature too.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Cuting Temperature, Cryogenic Machining, FEM, DEFORM INTEGRATED 2D,Titanium Ti6Al4V.
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking > TS213.K56 Metal-work--Mathematical models. Finite element method.
Divisions: 03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User: Assoc.Prof Amrifan Saladin Mohruni
Date Deposited: 16 Jul 2019 11:11
Last Modified: 06 Oct 2019 09:43
URI: http://repository.unsri.ac.id/id/eprint/310

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