Ain Shams University Faculty of Engineering New Programs u.t^r'rr i11/ i""h ii.,1uiel[ \]a i+=+l[ $t],'lt MrcHnrRoNtcs Pnocnnvt Spring 2015 MDP l2l: Manufacturing Technology 1. Assignment No" 2 1- \Mhat is the effect of temperature on the microstructure of metals at forging process? 2- What are types of forming processes according to temperatures? 3- $how the ranges of temperature for cold, warm and hot forging. 4- :What are typ* of forging processes? 5- Compare between hot and cold forming 6- What are benefits of lubrication? 7 - How do we choose the lubrications? 8- What is the effect of temperature on the followings? Barrel shape, friction and tool wear. 9- What are factors which affecting on the barrel shape? 10- What load w-ouldbe requiredto forge a25 cm length and 50 cm diameter cylindrical steel billet to 7 5o/o of its original length between two flat dies if the forging occurs at 1- At room temperature with coefficient of friction of 0.07 andyield stress of steel of 250 MPa. 2- At 900'C ut yield stress of 10 MPa and friction coefficient of 0.1. 11- Compare the forging force to give 30% reduction in height by using upsetting in the following cases. 1- Cylindrical billet of 60 mm height and 3 0 mm diameter. 2- Cylindrical billet of 6 mm height and 30 mm diameter. The coefficient of friction is 0.07 and stress coefficient factor is 300MPa and strain hardening coefficient of 0 .25. o1lrAr.1;il 2 $ ^ 1 t r.. l*ty'14 eliX
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Ain Shams UniversityFaculty of EngineeringNew Programs
u.t^r'rr i11/ i""h
ii.,1uiel[ \]ai+=+l[ $t],'lt
MrcHnrRoNtcs Pnocnnvt
Spring 2015MDP l2l: Manufacturing Technology 1.
Assignment No" 2
1- \Mhat is the effect of temperature on the microstructure of metals at forgingprocess?
2- What are types of forming processes according to temperatures?
3- $how the ranges of temperature for cold, warm and hot forging.
4- :What are typ* of forging processes?
5- Compare between hot and cold forming6- What are benefits of lubrication?7 - How do we choose the lubrications?8- What is the effect of temperature on the followings? Barrel shape, friction
and tool wear.9- What are factors which affecting on the barrel shape?
10- What load w-ouldbe requiredto forge a25 cm length and 50 cm
diameter cylindrical steel billet to 7 5o/o of its original length between two
flat dies if the forging occurs at
1- At room temperature with coefficient of friction of 0.07 andyield stress
of steel of 250 MPa.2- At 900'C ut yield stress of 10 MPa and friction coefficient of 0.1.
11- Compare the forging force to give 30% reduction in height by using
upsetting in the following cases.
1- Cylindrical billet of 60 mm height and 3 0 mm diameter.
2- Cylindrical billet of 6 mm height and 30 mm diameter.
The coefficient of friction is 0.07 and stress coefficient factor is 300MPa
and strain hardening coefficient of 0 .25.
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