Current Advances in Mechanical Design & Production IV: by Yehia H. Kabil, Y. H. Kabil, M. E. Said

By Yehia H. Kabil, Y. H. Kabil, M. E. Said

Provides an outline of the cutting-edge in mechanical layout and creation. either uncomplicated and utilized examine papers spotlight contemporary developments, thoughts and case experiences in significant fields: research and layout of mechanical platforms and parts; creation and commercial engineering. This quantity additionally contains all of the invited keynote lectures awarded on the convention. includes seventy three papers.

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The roughness of WC-17%Co is lower than the roughness of Ni-5%A1. Table 1 gives the surface roughness values (Ra) determined from the roughness average method. 3. The hardness for Ni-5%A1 was about 165 HV and for WC-17%Co it was about 670 HV. 4 indicates the effect of coating type on the wear rate of the two coating materials used. 5 mm and the testing medium was 3%NaCl solution + 5% sand. The wear rate was calculated after 40 hrs of testing. The wear rate for mild steel (with no coat) was indicated for comparison.

Calcium oxide (CaO) and iron oxide (Fe2C>3) was applied. The chemical analysis of the iron after treatment indicate a significant reduction in these elements. e. 82%, 61% and 96% respectively)· After modification treatment of the base iron melt,ductile iron castings have been produ ced using a nodulizing mixture containing elemental magnesium and ferrosilicon (Mg + FeSi 7 5) in the granular or compressed form. The spheroidizing treatment took place inside the mould. The cast specimens have been machanically and metallographically investigated.

Ahmed, S. El-Raghy and A. 7 Effect of coating porosity on its wear rate. 9 Optical micrographs of WC-17%Co coating. a- Parallel section b- Normal section before testing c- Normal section after testing. 8 Surface roughness values for the two coatings before and after testing. 10 Optical micrographs of Ni-5%A1 coating. a- Parallel section b- Normal section before testing c- Normal section after testing. (lOOx) 45 Current Advances in Mechanical Design & P r o d u c t i o n , Fourth Cairo U n i v e r s i t y MDP Conference, C a i r o , Dec.

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