Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A riser or a feeder head is a passage of sand made in the cope to permit the molten metal to rise above the highest point in the casting after the mould cavity is filled up. Risers serve a dual function. They compensate for solidification shrinkage which is a very common casting defect and are a heaf source so that they freeze last and promote directional solidification.
Types of Risers : There are two types risers :Top or open risers and side or blind risers.
Riser shape and Size : The metal in the riser should remain in the molten state for a longer time than in the mould cavity.
It means a heaf looses in riser should therefore be kept to a minimum. It means a riser most freeze more slowly than the casting. Those there shape should be such as to give volume-to-surface-area ratio a maximum value. This ratio is maximum for a sphere. Therefore this is the ideal shape of a riser.
As regards the height of the riser, it must be fall enough to ensure that any pipe formed in it does not penetrate the casting.
Draw the QAM constellation diagram of 10110100
how to find points on Ts diagram?
Evacuation of a high rise building - means of escape: Evacuation of a high rise building is likely to be split into two or more phases. Initially, when the alarm activates (f
why we study r architecture?
Q. State difference between elastic and plastic deformation. Ans. Elastic deformation: Elastic deformation is that the part of the deformed material, when the applied load is
What is superstructure brickwork?
Wing design for a sports glider The justification of the aerofoil selection with appropriate data, based on tunnel work or computational analysis. Sizing of the wing in
HEAT TREATMENT PROCESS
Design the counters for the digital clock Minimum 100 words accepted#
The objective of this programming assignment is to experience the use of inheritance in Java and to see how polymorphism works with inheritance in Java. The assignment involves wri
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd