Chaplets, Other Engineering

Assignment Help:

Q. Explain the Chaplets.

                                                      OR

 When are chaplets required in moulding practice? What is the material of the chaplets?

Ans. Chaplets : Chaplets are metal spacers used for supporting such large and odd shaped cores which cannot be adequately supported by their own core prints. They are placed in a mould between the mould face and the core. As the mould is filled up with molten metal the chaplets are surrounded by it and ultimately fused into it. The chaplet should be such that its head is larger enough to provide large bearing surface and this stem to fuse quickly into the molten metal. But this happens under ideal conditions only. In normal cases usually complete fusion does not occur, but the chaplet is very tightly gripped by the surrounding metal.

Material of the Chaplets

The material of the chaplet must conform to the molten metal or alloy being cast in order to effect proper fusion. For iron or steel castings, the chaplets are made of tin plate and low carbon steel. So the material of chaplets should be the same or very nearly the same as that of the casting to be made. The surface of the chaplets must be clean, without any trace of corrosion, moisture or oil. Chaplets are shot peened to increase their compressive strength and then tinned before use. Clean chaplets fuse well with the metal and do not cause the formation of holes and discontinuities.


Related Discussions:- Chaplets

#title: Signal Processing, how to load a large file consisting hex bytes wi...

how to load a large file consisting hex bytes without spaces and plot the required bytes

Multirate filters, obtain the polyphase structure H(Z)=1-3Z^-1/1+4Z^-1

obtain the polyphase structure H(Z)=1-3Z^-1/1+4Z^-1

Financial Ratio, The following information was extracted from the accountin...

The following information was extracted from the accounting records of De Walt Company as at 28 February 2011 (the end of their financial year): Sales (50% on credit) 1 400 000 Cos

Susceptibility - fire safety management, Susceptibility: Susceptibilit...

Susceptibility: Susceptibility to products of combustion, which includes metabolism, lung capacity, pulmonary disease, allergies, or other physical limitations that affect sur

Aeroengines - grid conversion, When we solved our simple problem we saw tha...

When we solved our simple problem we saw that the truncation error was O(x) We therefore expect that as the number of grid points is was O(x). We therefore expect that as the numbe

Installing aircraft parts, Installing Aircraft Parts: Prior to fit remo...

Installing Aircraft Parts: Prior to fit remove the label from the engine and attach it to the paperwork for safekeeping. Check the engine over to ensure it is complete and chec

Manual override relays, Manual override relays: When the manual-overrid...

Manual override relays: When the manual-override relays are not energised, this current flows through brushes riding on slip rings mounted on the propeller spinner bulkhead and

Fire evacuation - railway inspections, Fire evacuation - Railway inspection...

Fire evacuation - Railway inspections: Fire evacuation signals should be given by voice messages and these must be easily understood by the occupants. The expected populati

Finance, Derive the functional relationship between the no-arbitrage values...

Derive the functional relationship between the no-arbitrage values of the two vertical spreads.

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