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!
Q. can you explain Shell molds?
These molds are prepared by pouring a mixture of sand and thermosetting resin over the heated surface of a metallic pattern, which results into the formation of a thin and rigid layer or shell of uniform thickness around the pattern, which, when separated from the pattern surface, forms one part of the shell mold and two such parts are joined together to form the complete shell mold.
The process of making shell mold, a brass or aluminum pattern is clamped on a steel plate which also carries projections to produce runners, risers, etc. in the mold cast on this plate. The assembly of pattern is heated to 1750C to 3700C and later sprayed with a silicon release agent to help easy removal of mold shell from the pattern. A molding mixture comprising fine silica sand and 3 to 10 % synthetic resin is prepared and dumped over the hot pattern and plate assembly held in a box and is allowed to remain in contact with hot pattern assembly for about 30 seconds. This results in the softening of resin and formation of a shell or coating of uniform thickness around the pattern assembly. Latter the assembly of pattern with the formed shell is cured by heating to a temperature. Example of shell mold cast products include: cylinder heads, connecting rods, gear housings and other mechanical parts.
Q. Explain about Fired Heaters and Combustion Engines? Fired heaters and combustion engines shall normally be located at a safe distance from hazardous areas as they provide po
how it is use to determine the wavelenth of He-Ne laser?
Define the Abrasive Jet Cutting Machines 1. Abrasive jet cutting machines which are used to cut sheet materials or to remove materials of work piece from a surface by generatin
The turbine rotor of ship of mass 6000Kg has a r of Gyration 50cm. It moves at speed of 1820rpm clockwise when looking from the rear. Evaluate the effects set up:- 1) If the shi
Determine the percentage savings in the material: A hollow shaft containing an inside diameter 0.5 times the outer diameter is to replace the solid shaft of the similar materi
How a turbine works
Ask question #Minimum 100 words awrite short note on the the hierarchical system structure involving various level
an engine having
what do you mean by law of belting and also explain the crowning of pulleys ?
Matter, particle and body: Matter is anything which occupies space, possesses mass provides resistance to any stress, example Iron, air, stone, Water. A body of negligible
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd