How can you implement chemically coated sand, Mechanical Engineering

Assignment Help:

Q. How can you implement chemically coated sand?

Chemically coated sand: Clean silica grains are sometimes coated with a non thermosetting hydrocarbon resin, which acts as a binder. An additional binder in the form of clay can also be used. The advantage of this sand is that the carbon in the resin which is an excellent refractory surrounds the sand grains and does not allow the molten metal to reach the sand grains. This produces casting with the clean surface as the sand does not get fused in them. The moisture content in the sand is kept to above 3%. Moulding sand exhibits maximum strength at a moisture content of 4% for lean sands and of 6 to 7% for loam sands.

Typical green moulding sand for gray iron moulding are given below: Silica sand = 68 to 86%

Clay          =  10 to 20%

Water        =  3 to 6%

Additives  = 1 to 6%


Related Discussions:- How can you implement chemically coated sand

Prismatic Cell battery?, #question.Is it possible to create a round/circle ...

#question.Is it possible to create a round/circle shaped Prismatic Cell battery? If so, could it power an electric wheelchair 30 KM/18 miles (If there were two of them, 9 miles eac

Cermets-alloys for cutting tools, Cermets Such are the variation of ce...

Cermets Such are the variation of cemented carbides while the carbides of W and Ti are solidified in the softer matrix of Co and Nickel to get high hardness, resistance to hig

Industrial manufacturing activity, Industrial Manufacturing Activity can br...

Industrial Manufacturing Activity can broadly be divided into the followings ways: Mass Production Large lots e, g, Automobiles : In this the volume of production is very hi

Mechanics of solid, derivation for varing shear stress for thin circular tu...

derivation for varing shear stress for thin circular tubes.

Gravitation, What is the clear difference between gravitational potential a...

What is the clear difference between gravitational potential and gravitational potential energy ? Ans) A body A of mass m is placed in the gravitational field of a body B of mass

Belt friction, Ask question # how to derive a expression for the centifugal...

Ask question # how to derive a expression for the centifugal tension in belt driver

Inertia force analysis, what is the role of a correction couple and how doe...

what is the role of a correction couple and how does it come into picture in dynamically equivalent system?

Convolution Integral, For a transfer function graph with h(t) on the y-axis...

For a transfer function graph with h(t) on the y-axis and time in seconds on the x-axis, the h(t)=1 from 0 to 2 seconds, while h(t)=0 everywhere else. How do I graph the unit step

Trusses, Differentiate between perfect, deficient and redundant trusses

Differentiate between perfect, deficient and redundant trusses

Explain concept of drill, Explain concept of Drill Power feed of the sp...

Explain concept of Drill Power feed of the spindle is a common feature. Also coolant system is a ordinary feature of the radial drilling machine. Radial drilling machines ca

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd