3. A dimension of 225.00 mm is specified for a particular injection moulded component manufactured in ABS. Calculate the corresponding dimension to which the mould cavity should be machined, using the value of shrinkage given in the table below. Typical values of shrinkage for moldings of selected thermoplastics. Shrinkage, Shrinkage, mm/mm (in/in) mm/mm (in/in) Plastic Plastic ABS 0.006 0.025 Nylon-6,6 Polycarbonate Polyethylene Polystyrene PVC 0.020 0.004 0.007 0.005

3. A dimension of 225.00 mm is specified for a particular injection moulded component manufactured in ABS. Calculate the corresponding dimension to which the mould cavity should be machined, using the value of shrinkage given in the table below. Typical values of shrinkage for moldings of selected thermoplastics. Shrinkage, Shrinkage, mm/mm (in/in) mm/mm (in/in) Plastic Plastic ABS 0.006 0.025 Nylon-6,6 Polycarbonate Polyethylene Polystyrene PVC 0.020 0.004 0.007 0.005

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Metal Casting

Metal casting is described as a manufacturing process in which a mold cavity is produced by sand, and molten metal is filled inside a mold cavity. The desirable shaped object is achieved after the solidification of molten metal. Large metal objects like machine beds, motor bodies, and others can easily be manufactured using metal casting. The place or shop where metal casting is performed is called foundry.

Question

3. A dimension of 225.00 mm is specified for a particular injection moulded component manufactured
in ABS. Calculate the corresponding dimension to which the mould cavity should be machined, using
the value of shrinkage given in the table below.
Typical values of shrinkage for moldings of selected thermoplastics.
Shrinkage,
mm/mm (in/in)
Shrinkage,
Plastic
Plastic
mm/mm (in/in)
ABS
Polyethylene
Polystyrene
0.006
0.025
Nylon-6,6
Polycarbonate
0.020
0.004
0.007
PVC
0.005

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