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Estimation of Cutting Tool Wear in Turning using Taguchi Method Depending on Weight of the Removed Tool Metal
تخمین تآكل عدة القطع في عملیة الخراطة بتطبیق طریقة تاكوجي اعتمادا على الوزن المفقود من العدة

Authors: Hussam Lefta Alwan --- Baraa M.H. Albaghdadi --- Mohanned M. H. AL-Khafaji --- Asaad Ali Abbas
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2014 Volume: 32 Issue: 1 Part (A) Engineering Pages: 24-33
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

This paper focuses on using Taguchi method to determine the optimumturning parameters such as spindle speed, depth of cut, and feed rate, denoted by factor symbols A, B, and C respectively. The effect of cutting parameters on tool wear is depended on the concept of removed weight from the tool metal during machining. The material that has been used as a workpiece is high carbon steel and carbide insert DNMG 443-15 as a cutting tool. Taguchi orthogonal array L9,quality characteristic "smaller is better", and ANOVA were used to achieve the goal of the research. The results obtained showed that spindle speed is thesignificant factor of the process followed by the feed rate in terms of their contribution in analysis. The optimum combination of parameters, which was found by applying Taguchi method, is that designated by A2B1C1.


Article
EFFECT OF BURNISHING FORCE AND FEED ON THE DEPTH OF THE SURFACE HARDENED LAYER IN PLANE SURFACE BALL BURNISHING
تاثير قوة الصقل والتغذية على عمق الطبقة السطحية المتصلدة في صقل سطح المستوي

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Abstract

In an experimental analysis study, a blend of burnishing parameters was varied to obtain their optimum values to produce the finest surface integrity in plane surface burnishing process. The physical depth of the micro hardened surface layer was also evaluated at the obtained optimum values of the parameters. The analysis was undertaken on ball burnished plane surface, mild carbon steel M1044, using a milling machine and a purpose designed and manufactured burnishing tool. The effects of burnishing feed and force on both surface smoothness and hardness together and on the depth of the hardened surface layer of the work pieces material were observed and investigated. The results indicated that plane burnished surface finish and hardness improvements of around (89 %) and (70 %) respectively were obtainable at the optimum values of the mentioned parameters. Around 35 µm physical depth of the hardened surface layer was the result at the obtained optimum burnishing force and feed values of about 7.8Kgf and 107 mm/min respectively.

في دراسة عملية تحليلية , تم تغيير مزيج مؤشرات الصقل لغرض الحصول على قيمها المثلى التي تنتج افضل نوعية للسطح فى عملية الصقل السطحى المستوى . كما تم تقييم العمق الفعلي للطبقة السطحية المتصلدة عند القيم المثلى للموشرات التي تم ايجادها. أجري التحليل في الصقل الكروي لسطح المستوي على الفولاذ الطري (M1044) باستخدام ماكينة تفريز وأداة صقل صممت وصنعت لهذا الغرض . تم ملاحظة و تحرى تاثيرات كل من قوة الصقل والتغذية على النعومة السطحية والصلادة السطحية معا وعلى عمق الطبقة السطحية المتصلدة لمعدن المشغولة. اشارت النتائج أنه فى عملية الصقل السطحى المستوى يمكن الحصول على حوالى (89%) و (70%) تحسين فى نعومة و صلادة السطح علىى التوالي عند القيم المثلى للمؤشرات المذكوره. اظهرت النتائج ان العمق الفعلي للطبقة السطحية المتصلدة هو حوالي 35 مايكرومتر عند القيم المثلى لقوة الصقل والتغذية التى تم الحصول عليها وهي 7.8Kgf و 107 mm /min على التوالي .

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