يمكن أن يؤثر نوع و نسبة المادة المزيتة بشكل كبير على خصائص المساحيق. و في هذا البحث
تم دراسة تأثير نسبة و نوع المواد المزيتة على العينات الخضراء المصنعة من المساحيق الحديدية.
حيث تمت إضافة نسب و أنواع مختلفة من المواد المزيتة إلى مسحوق الحديد ، و خلط المسحوق
و كبسها عند درجة الحرارة العادية ، V مع المادة المزيتة لمدة ساعة في خلاط على شكل حرف
إلى كثافات مختلفة %( 75,80,85 ) من الكثافة النظرية للحديد و تم استخدام ثلاث مواد مزيتة هي
استيرات الزنك و الغرافيت و بولي فينيل الكحول عند ثلاث نسب ( 0.5,1,1.5 ) % ، و دراسة تأثيرها
على كل من المتانة و الانضغاطية لهذه العينات.
Lubricant type and concentration play a very important role on metalic powder
characterestics. This research presents the outcomes of an experimental investigation
on the effect of lubricant type and content to the green compressibility, and strength
of green pieces produced by adding different amounts (0.5,1,1.5)% and different types
(zinc stearate,graphit,poley phinil alcohol) of lubricant to the iron powder, and mixing
them for one hour in V shape blender ,then pressing them to different densities
(75,80,85)% out of the the theoretica density.
References used
p.ramakrishnan (1983) :”history of powder metalurgy”,indian journal of history of sience, indian of metalurgical engeniring,indian institute of technology 19/1/1980
author W. Brian James, year 2015 title Powder Metallurgy Methods and Applications
ASM Handbook, Volume 7, Powder Metallurgy
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
The changes in green peas, processed by using freezing and bleaching were
compared with their chemical composition (moisture, ash, sugar, fat). Effect of
freezing and bleaching processes of green peas on the ascorbic acid, total
phenolic compounds
The research was conducted during the growing season in 2013-
2014 in Bssiren Hama. In a split- plot design: the varieties were
main plots (asgro, rama, Muncipal) and the sowing dates were subplots (15\11;30\11;15\12 and 30\12) and the densities we
Sustainability and health care building are two important issues,
which contain many of topics are very in composition,
Sustainability is a thought aimed at achieving compatibility
between human needs and the data of surrounding environment and
w
This study aims to clarify the ability of Syrian companies to improve their
performance through adoption of green accounting as a marketing concept and its impact
on market share.
The study focused on the components and obstacles of environmental