پديد آورنده :
محمدي، حسين
عنوان :
بررسي فرآيند تراشكاري واير كات قطعات مخروطي- استوانه اي وتحليل آماري نتايج
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
ساخت وتوليد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
ده، [132]، [II]ص.: مصور، جدول، نمودار
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
عليرضا فدايي تهراني
استاد مشاور :
علي همداني ، امين ا...، محمدي
توصيفگر ها :
فوائدDOE , متالوگرافي
تاريخ نمايه سازي :
21/07/1387
استاد داور :
محسن صفوي همامي ، جواد زركوب
تاريخ ورود اطلاعات :
1396/03/03
چكيده فارسي :
به فارسي وانگليسي: قابل رويت درنسخه ديجيتال
چكيده انگليسي :
AbstractIn this research work the application of Cylindrical Wire Electrical Discharge Machining CWEDM for machining of precise conical cylindrical forms on hard and difficult to machine materials is presented The material chosen in this case was AISI D3 tool steeldue to its growing range of applications in the field of manufacturing tools dies and moldsas punch tapping reaming and so on Results of surface roughness Ra roundness andmaterial removal rate MRR on the cylindrical wire electrical discharge turning CWEDT has been presented This study has been carried out on the influence of five design factors power voltage pulse off time spindle rotational speed and conical angle over the threeprevious mentioned response variables by using of statistical design of experiment DOE method Three levels Fractional factorial method 3 k p was used for studying selectedfactors All experiments are conducted on ONA R250 wire EDM machine Analysis ofVariance ANOVA has been used for acquiring optimal conditions of machining on AISID3 cold worked steel parts Also an equation based on data regression has been presentedfor each of three responses Results demonstrate that power voltage time off and formfactor are the most affective parameters on MMR and Surface Roughness Ra Power time off and RPM are the most affective parameters on Roundness Surfaces of thecylindrical WEDT parts were examined using Scanning Electron Microscopy SEM toidentify the micro ridges and craters on the surface Cross sections of the EDM parts areexamined using the SEM to quantify the recast layer and heat affected zone under variousprocess parameters The undesired recast layer which has poor mechanical properties andirregular features must eventually be removed In other hand one of the most importantproblems in wire electrical discharge machining is related to wire breakage so effect ofinput parameters such as power and voltage on wire as electrode has been investigated The results of this work will be used for increasing the performance of the CWEDMprocess
استاد راهنما :
عليرضا فدايي تهراني
استاد مشاور :
علي همداني ، امين ا...، محمدي
استاد داور :
محسن صفوي همامي ، جواد زركوب
