International Journal of Mechanical Engineering

1-10

Authors: Suthraye Sai Gaurav, G. Devendar & A.Chennakesava Reddy

In this present work, a statistical approach based on Taguchi techniques and finite element analysis were adopted to determine degree of each parameter that is punch velocity, coefficient of friction, temperature and blank thickness on the formability of cups from Nickel 201 using warm deep drawing process. The results obtained from finite element software namely DEFORM were validated experimentally. The blank thickness, temperature and coefficient of friction have been found influencing the quality of the cup drawn from Nickel201.

21-28

Authors: B. Sudarshan, K. Divyalakshmi & Y. Bhaskar Reddy

Assembly injection moulding is an advanced and highly integrative technique for producing mechatronic systems, with a broad range of choices. This is because it incorporates several technological functions in one manufacturing process, such as shells and close up of many components completed of various materials. Combining different materials, in particular, is both a significant technical advantage and a significant challenge. The tightening of the system is a big objective. This paper provides a model to help researchers better understand how leakage happens and the processes that underpin it, such as contract age and war page behaviors that are affected by material, repetition, and design. It will also serve as the base for research into the phenomenon and the development of techniques to boost the media tightness of assembly moulding systems. The compound interface and intereffects present on thermal and structural shrinkages, the elements' war page, and the adhesion between them are all very important

35-48

Authors: A. M. Sehsah, M. M. Ghanem, H. A. Abdel-Aleem & M. El-Shennawy

In this study, effect of welding parameters on microstructure and mechanical properties of dissimilar austenitic AISI304 stainless steel/ductile cast iron DCI A536 joints was investigated. Plates of ductile cast iron (DCI) with 6mm thickness were manufactured, heat treated and inspected at CMRDI casting laboratory. The main welding parameters studied in this work are welding technique (with and without buttering layer at DCI side) and type of filling electrodes. Electrode types applied for this dissimilar joint included Inconel 182 (ENiCrFe-3), cast-iron- Ni-Fe-electrode (ENiFe-CI), and stainless-steel electrodes E309L. Microstructure of welded joints was investigated using optical microscope and scanning electron microscope (SEM) equipped with EDX instrument. Mechanical properties of welded joints were evaluated by hardness test, tensile and Charpy notch impact tests. In general, when using buttering technique at DCI side, it acts as obstacle layer to minimize carbon migration from DCI side to the weld and reduce formation of carbides in weld metal. The sample welded using buttering layer (ER Cu Al-A2) and filling groove with electrode ENiCrFe-3 had better mechanical properties compared with same sample without buttering technique.

57-66

Authors: Arfa S Sobh, Khaled, H. M. A. Hussein, Ali Abd El-Aty & M. A. Bhlola

The needs of lighter automotive components have enhanced the application of thin wall casting technology on ductile iron which is known as Thin Wall Ductile Iron (TWDI). In the current research, TWDI was produced using vortex technique with different thicknesses of 5, 10 and 15mm. Vortex technique is a modern method for producing high quality ductile iron. This aims at producing TWDI with high nodularity and high mechanical properties. The shape of cast samples had a dimension of 154mm x 120mm for each plate with different thicknesses of 5, 10 and 15mm. They cut into pieces for determining the mechanical properties such as tensile, hardness and wear resistance as well as microstructures of these casted alloys. The results show that the microstructures of the three casted samples were composed of pearlite, ferrite and nodular graphite. Maximum hardness of 300 HB was obtained for 5mm thickness sample and the minimum one of 250 HB was for 15mm thickness sample. Maximum tensile strength and wear resistance were obtained for 5mm thickness sample due to existing of high amount of pearlite and the minimum values were resulted for 15 mm thickness sample. Therefore, TWDI can be considered as substitutional material of steel sheets and can produce spare parts which save cost and 10% in weight as compared to steels. [Copyright information to be updated in production process]