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Register a new userStudy the effect of pulsed current on hardened tool steel operation by using the electric discharge machining (EDM)
دراسة تأثير التيار النبضي على عملية تشغيل الفولاذ المقسى باستخدام آلة التفريغ الكهربائي EDM
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هلا مصطفى سفاف( باحث )
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يقدم هذا البحث نتائج لتجارب مدروسة حول تأثير بارامترات التشغيل لآلة التفريغ ,مثل شدة تيار التفريغ, على معدل إزالة مادة التشغيل و معدل اهتراء الإلكترود و القطع ,القطري و خشونة السطح و قد أجريت التجارب على آلة إطلاق من نوع (31-En) و ذلك من أجل تشغيل قطع من الفولاذ المعالج حرارياً ذو التركيب التالي (T105 Cr1 Mn60) . و المقسى حتى درجة 55HRc. أما مواد الإلكترود المستخدمة للدراسة فهي النحاس , نحاس- تنفستن , نحاس الأصفر (براس) , ألمنيوم .
This paper reports the results of an experimental investigation carried out to study the effects of machining parameters such as pulsed current on material removal rate, diameteral overcut, electrode wear and surface roughness in electric discharge machining of En-31 tool steel (IS designation: T105 Cr 1 Mn 60) hardened and tempered to 55HRc. The work material was ED machined with copper, copper tungsten, brass and aluminum electrodes by varying the pulsed current at reverse polarity.
References used
BRINK-D, EDM: Principles of Operation, EDM Technology Transfer http://www.edmtt.com
DAUW-D,1989- Charmilles technologies facing the future, Paper Presented During the Inauguration of CT-Japan, Yokohama, VOL.3.22-25
DAUW-D,KOENIG-W,1998 EDM—future steps towards the –machining of ceramics.japan, 625P
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