Improvement Of Mechanical Properties And Yield For
Aluminium Bronze (ab2) Casting
Student Team/ Author :
B. Shanmuga Raja
Guide By :
N. S. Mahesh
Degree :
Aluminium bronze (AB2) offers combinational benefits of excellent cavitation, corrosion resistance and mechanical properties, making it ideal choice for hydraulic and marine applications. A foundry manufacturing AB2 bushes encountered poor strength and elongation in sand castings and its test coupon. Moreover, there was a need to improve casting yield for economic advantage.
The objective of the project was to improve, elongation to a range of 18 – 25% and to increase yield by 10%. Existing practices were studied for foundry practice followed and data on mechanical properties and yield was collected. Existing test coupon and component were modelled in CATIA V5 and analysed for fill, flow, temperature gradient and defects, using ProCAST numerical simulation and root causes for low mechanical properties were identified. ASTM test coupon designs were analysed and ASTM low shrinkage test coupon was suggested as an ideal choice for casting aluminium bronze (AB2). Casting trial was carried out for test coupon validation. Mechanical testing were carried out on standard test coupon which wa
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