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!
Plastic molds are made of plaster of Paris (gypsum) or calcium sulphate, talc and silica flour is added in the plaster of Paris to improve strength and to control the time required for the plaster to set. These ingredients are mixed with water and the resulting slurry is poured over the pattern.
The plaster sets within 15 minutes usually. After the plaster sets, the pattern is removed and the mould is dried at 120°C -260°C to remove the moisture. The mould halves are assembled to form the mould cavity and are preheated to about 120°C. The molten metal is then poured into the mould.
Patterns for plaster moulding are generally made of Aluminum, thermosetting plastics, brass or zinc alloys. Wood patterns are not appropriate for producing a large number of mould because they are repeatedly in contact with the water based plaster slurry.
what are the different phosphates used in water treatment?
Inhibit Gate Occasionally it is required to 'hold' one input to an AND gate at a particular logic level in order to disable the entire gate. One method of representing this sy
STATIC & DYNAMIC BALANCING STATIC BALANCE When the weight distribution about the propeller axis is equal, with the propeller in any position, it is said to have static bal
WHAT IS RTT
1. Generally moulding sands can be classified as: (a) Natural Sand (b) Synthetic or High Silica Sand (c) Chemically Coated Sand
explain any two finishing processes in detail with neat diagram
Where do you think by DJIA? Nobody knows the respond to this one. However, you should at least have some ideas on the topic and be able to communicate why you think this is the
The design and implementation of an autonomous guidance system requires knowledge and an understanding of a wide range of technologies, from the physical dynamics of the vehicle (i
1-calculate the present value of the expected synergies. ( Assume a tax rate of 35%. a discount rate of 10% suitable for the cost oand revenue synergies combined, and inflation of
I have an assignment which I need help with
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