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Register a new userImprovement of flat surface roughness by choosing the optimum diameter of the ball burnishing tool and its trajectory
تحسين خشونة السطوح المستوية من خلال الاختيار الأمثل لقطر أداة التلميع بالضغط و مسارها المبرمج
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في هذا البحث, تمّ تنفيذ دراسة تجريبية على سطح من الألمنيوم 6061 باستخدام أداة تلميع مصممة و مصنعة لهذه الدراسة. تمّ تصميم التجارب لإيجاد أثري مسار التلميع و قطر كرة التلميع على خشونة السطح الملمع مع الأخذ بعين الاعتبار أكثر من قيمة لقوة الضغط ضمن المجال المناسب للمعدن المدروس, حيث تمّ استخدام مسار مبتكر جديد تروكوئيدي و مقارنة أثره مع مسارين تقليديين ذهاب و اياب و حلزوني.
In this research, an experimental study was undertaken on aluminium using a purpose designed and manufactured burnishing tool. The experiments was designed to find the effects of burnishing tool path and ball diameter on the surface roughness of an Al-6061 workpiece taking into consideration many values of burnishing force in the suitable field, where we have used a new created path and compared its effect with two conventional paths (zig-zag) and (spiral). Twenty seven experiments were carried out on samples of Al- 6061, using the full factorial design method with three parameters: ball diameter, ball path and force, with three levels of each parameter.
References used
M.H. El-Axir, O.M. Othman and A.M. Abodiena 2008 Improvements in out-of-roundness and microhardness of inner surfaces by internal ball burnishing process, journal of materials processing technology, Vol.196, 120-128
Mr. Pavan Kumar and Purohit.G.K 2013 Design and Development of Ball Burnishing Tool, International Journal of Engineering Research and Technology, Volume.6, pp. 733-738
Mayank K Patel and Manish D Patel 2012 OPTIMIZATION OF INPUT PROCESS PARAMETERS FOR VIBRATORY BALL BURNISHING PROCESS USING RSM, International Journal of Research in Engineering & Applied Sciences, Vol.2, 372-381
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In this research, we have studied the ability of using a trochoidal
curve as a programmable path to finish flat surfaces of
aluminum-6061 specimens using ball burnishing technique. The
experiments were carried out by using the ball burnishing tool
which was designed, manufactured, and fixed on 3-axis CNC
milling machine .
In this research, the optimum rate of burnishing force for
burnishing samples of Al-6061 was found, in order to have the
best finish of the surface .
Different tests were carried out on samples of Al-6061 by
application different values of burnis
hing force without changing
the other parameters of the ball burnishing operation .
The experiences were carried out by using ball burnishing tool
and CNC milling machine with three-axis .
One popular heat transfer augmentation technique involves the use
of rough surfaces of different configurations. The rough surface
aims to promote surface turbulence that is intended mainly to
increase the heat transfer coefficient and surface are
a. It was
reported that non-flat surfaces have free convection coefficients
that arrive to 50% to 100% more than those of flat surfaces.
The goal of this study aims mainly to examine heat transfer
enhancement from a surface with same industrial roughness created
by a special tool (roughness surfaces) with different shapes under
convection heat transfer compared to equivalent smooth surfaces
without deformations.
The results show there is no need to apply the different roughness
configurations in two mutually perpendicular directions. It's enough
to cause it only in one plane. And we have got the same win in
surface area.
The results show also the rectangular profiles of roughness give the
best result.
The ideal goal of periodontal instrumentation is to effectively remove plaque
and calculus without causing root surface damage and various instruments have been designed to achieve
this goal. Root planing aim to create a root surface which is biolo
gically acceptable to surrounding soft
tissues and increase root surface roughness.
Aim of study: To evaluate the increasing of root surface roughness produced by hand curettes and
piezoelectric ultrasonic instrument with different power settings .
In this research, It has been studied the effect of compaction pressure on
the final roughness for the top and down surfaces for the green compacts
that manufactured by meal powder technique and it has been studied also
the effect of piston veloci
ty (compaction velocity) on the final roughness
for the same two surfaces.
The results present that the curved for the top surface roughness is
completely decreasing and as the pressure has increased, the value for
roughness has reduced and the mean roughness (Ra) has very close
values, where these values have made curve from second degree and
opposite relationship. The results were same for the down surfaces but
with different variations.
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