کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5457755 1515952 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Examination of wear damage to rock-mining hardmetal drill bits
ترجمه فارسی عنوان
بررسی آسیب های ناشی از بیت حفاری های سنگین استخراج فلزات سنگین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
WC/Co mining bits from a drill head used for drilling holes for roof support bolts in a mine were examined using a focused ion beam scanning electron microscope (FIB-SEM). This was combined with energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) analyses to study the chemical interaction between the drill bit and the rock. It was found that at the surface of the buttons there was depletion of cobalt, change in chemistry of the remaining binder regions, and changes to the morphology of the WC grains. Tribochemistry calculations were done to understand the possible formation of silicides at the surface of the drill bits, and thus emphasise the importance of quartz content in rock on wear. The evidence of mechanical damage combined with chemical reactions is another step towards understanding the complete wear process in hardmetal mining tools.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 66, August 2017, Pages 1-10
نویسندگان
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