Analysis of mechanical properties and microstructure of multiple die cavity products produced in vertical and horizontal arrangement by gravity die casting
Multiple cavities die casting (Permanent die casting )in vertical arrangement and horizontal arrangement moulds are widely used in industry. However, manufacturers assume that each product produced in either arrangement would have the same quality. Manufacturers do not have enough information...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2012
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/2377/1/24p%20SALEH%20S%20SALEH%20ELFALLAH.pdf http://eprints.uthm.edu.my/2377/2/SALEH%20S%20SALEH%20ELFALLAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2377/3/SALEH%20S%20SALEH%20ELFALLAH%20WATERMARK.pdf |
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| Summary: | Multiple cavities die casting
(Permanent die casting
)in vertical arrangement and
horizontal arrangement moulds are widely used in industry. However, manufacturers assume
that each product produced in either arrangement would have the same quality. Manufacturers
do not have enough information about the properties of each product, i.e. strength, internal
defect and the microstructure. Furthermore, in actuality the quality of each product might be
affected. It is the problem that we found within the market now
(pinholes, cracks, misruns and
etc.
), that is the reason investigation and comparison of the multi product in vertical and
horizontal arrangement is needed. This investigation is needed to choose which arrangement is
preferred to maintain the quality of the product. The methodology used are vickers
microhardness test, izod test, ensile test, density and porosity test and optical microscope
inspection for all produced sample. Results of this research show that castings produced at
vertical arrangement mould have higher mechanical and properties than castings produced in
horizontal arrangement mould. Vertical arrangement castings obtained higher density
exceeds %1.6117 than horizontal arrangement castings that ranges between
(1.156 and
4.8707 percent
). However, vertical arrangement castings obtained higher porosity exceeds
%13.3885 than horizontal arrangement castings that ranges between
(0.0809 and 7.4629
percent
). The hardness values for vertical castings ranges between
(115HV and 78.9HV
),
while ranges between
(110HV and 79.1HV
) for horizontal castings. Castings in vertical
arrangement hardness are %7.5442 higher than hardness for castings in horizontal
arrangement. Impact strength values of vertical arrangement casting impact values that
ranges between( 6J and 19J
) positions are %118.4615 higher than casting at horizontal
arrangement casting positions that range between
(2J and 11J
). Ultimate tensile strength for
castings produced at vertical arrangement mould ranges between
(122-182 MPa
) are
%11.81 higher than castings produced at horizontal arrangement castings
(101-178 MPa
).
The microporosity at vertical arrangement positions are %35 lower than microporoity at
horizontal arrangement positions. |
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