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.
hybrid pi model
Question : What is the ISM band and what is particular about this frequency band? Name two wireless technologies that make use of the ISM frequency band. a) Explain the foll
Q. What is slip? What is slip plane? What are principal if slip planes and slip direction for BCC, FCC and HCP crystal? Ans. X-ray diffraction studies show that the crystalli
Pattern Practices : A pattern may be defined as a replica or fascimile model of the desired casting which, when packed or embedded in a appropriate moulding material, creates a ca
all the types of inductor which are known?????
Payback & NPV Julia Corp. is in the business of making sugar cookies. The company is considering the purchase of a new cookie making machine which will improve its manufacturing
Sonic airflow though divergent and convergent ducts When a flow of fluid (i.e. gas) flows at sonic speed through a convergent duct a shock wave forms at the exit area of the du
High rise buildings: High rise buildings have their own particular requirements for fire safety and for fire fighting. Means of escape rely on most people descending the stai
i want to make a project which is based on video transmission via laser ..please help me
what is the basic operation of gas turbine engine?
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