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

The world of fiance, Answer the following questions: What are the three for...

Answer the following questions: What are the three forms of a business organization? What are the advantages and disadvantages of each form? For a corporation, what is the overall

The brayton cycle-aeronautical engineering, The brayton cycle: The work...

The brayton cycle: The working cycle of the gas turbine engine is similar to that of the four-stroke piston engine.  There is induction, compression, ignition and exhaust in bo

machine molding, Machine molding is suitable for the faster and uniform qu...

Machine molding is suitable for the faster and uniform quality moulds, needed for mass production of castings. For preparing the moulds, various moulding machines are used. Majorit

#magnetic circuit, an iron ring with amean dia of 50 cm has an air gap of 1...

an iron ring with amean dia of 50 cm has an air gap of 1mm awinding of 200 turns if the permeability of the iron is 400 when a circuit of 1.25A flows through the coil find the flux

Case1, Flifla sells tomatoes every day in Suk al Marqazi, the downtown frui...

Flifla sells tomatoes every day in Suk al Marqazi, the downtown fruit and vegetable market. He finds that he can order tomatoes in crates of 25 kg and he is able to stock a maximum

Difference between income & expenditure statement, Difference between incom...

Difference between income & expenditure statement P&L is to be ready by the Company or Dealing Origination which evolved in Dealing of any commodity or manufacturing of completed e

Intake anti-icing of aircraft engine, Intake anti-icing Operations of p...

Intake anti-icing Operations of present day aircraft necessitates flying in all weather conditions plus the fact that high velocity air induced into the intakes means a provisi

Principles of suveying, the true length of a line is known to be 500m.the ...

the true length of a line is known to be 500m.the line was again measured with a 20m tape and found to be 502m,what is the correct length of the 20m tape.

Diod, i donot under stand about diod and transistor

i donot under stand about diod and transistor

Flight control -state estimators , State-estimators for continuous time lin...

State-estimators for continuous time linear systems The state space state and output equations of continuous time linear systems is of the form? x = Ax + Bu + v and y

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