How can we use of shrinkage allowance, Mechanical Engineering

Assignment Help:

Q. How can we use of Shrinkage allowance?

Since metal shrinks on solidification and contracts further on cooling to room temperature, linear dimensions of the pattern is increased in respect of those of the finishing casting to be obtained. This is called "shrinkage allowance". It is given as mm/ m.

Typical values of shrinkage allowance for various metals re given below:

C.I. Malleable iron = 10mm/m

Brass, Cu, Al = 15mm/m

Steel = 20mm/m Zinc,

Lead = 25mm/m


Related Discussions:- How can we use of shrinkage allowance

How long does it take a plane, How long does it take a plane, traveling at ...

How long does it take a plane, traveling at a constant speed of 190 m/s, to fly once around a circle whose radius is 2950 m?

Environmental factors for high temperature service materials, Q. Environmen...

Q. Environmental factors for high temperature service materials? Many environmental factors must also be considered when choosing a material for high temperature service. High

Soldering and brazing, soldering and brazing ,,its a assignment base, need ...

soldering and brazing ,,its a assignment base, need of soldering and brazing meaning and how it works and where does it used. more over the disadvantages and advantages of the sold

What is vertical spoilers, Q. What is Vertical Spoilers? Vertical Spoil...

Q. What is Vertical Spoilers? Vertical Spoilers - Use a three-start system of short vertical spoilers arranged in a helical pattern on the top third of the vessel. The exposed

Reassembly position of critical parts services tips, Reassembly Position of...

Reassembly Position of Critical Parts:  Care should be taken to note the position of the unidirectional parts while dismantling the engine. This will ensure dimensions (depth, dis

Net hydrostatic moment on the cylinder, A long cylinder of radius 2 m hinge...

A long cylinder of radius 2 m hinged at point A is used as an automatic gate. When the water level reaches 15 m the gate automatically opens. Determine the magnitude of the net hyd

Explain types of patterns, Types Of Patterns There are various types of...

Types Of Patterns There are various types of patterns depending upon the complexity of the job, the number of castings required and the moulding procedure adopted. Singl

Thermophyics, The steam that leaves the super-heater is expanded from 130ba...

The steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is reheated to 535

Normal and standard temperature pressure - stp ntp, Norma l Temperature an...

Norma l Temperature and Pressure (N.T.P.): The conditions of temperature and pressure at 0°C (273K) and 760 mm of Hg respectively are called normal temperature and pressure (

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