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Register a new userEffect of compaction pressure and velocity on the green compacts roughness that manufactured by metal powder technique
تأثير ضغط و سرعة التدميج على خشونة المدمجات الخضراء المصنعة بتقانة المساحيق المعدنية
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تم في هذا البحث دراسة تأثير ضغط التدميج المطبق على الخشونة النهائية للسطحين العلوي و السفلي للمدمج الأخضر المنتج بتقانة المساحيق المعدنية، و كذلك تم دراسة تأثير سرعة المكبس (سرعة التدميج) على الخشونة النهائية للسطحين أيضاً في المدمجات الخضراء الفولاذية . بينت نتائج الاختبارات أن منحني خشونة السطح العلوي متناقص تماماً ، و كلما ازداد ضغط التدميج المطبق انخفضت قيم الخشونة و اقتربت الخشونة المتوسطة (Ra) من قيم متقاربة، حيث توضحت العلاقة بمنحنٍ من الدرجة الثانية، و كانت العلاقة عكسية. و كذلك كانت للسطح السفلي و لكن بتفاوتات مختلفة. و تبين أيضاً أن تأثير الضغط يكون أكبر من تأثير سرعة التدميج. كما توضحت العلاقة ما بين سرعة المكبس المطبقة و خشونة السطح و تبين أنها عكسية.
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 velocity (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.
References used
P. Jonse´ n, H. Haggblad and M. Nishida," The effect of impact compaction on surface quality of powder discs", DYMAT International Conferences, DYMAT 2009 (2009) 1109–1115_ EDP Sciences, 20098
P.K.Bardhan, R.Behera, S.Patra, G.Sutradhar, " Analysis of Surface Roughness of Machined Surface of Powder Metallurgy Component” International Journal of Scientific & Engineering Research Volume 2, Issue 6, June-2011 1ISSN 2229-5518
Amoljit S. Gill, Sanjeev Kumar, “Surface Roughness Evaluation for EDM of En31 with Cu-Cr-Ni Powder Metallurgy Tool” World Academy of Science, Engineering and Technology International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering Vol:8, No:7, 2014
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