Chaplets, Other Engineering

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.

Posted Date: 8/3/2012 2:27:26 AM | Location : United States







Related Discussions:- Chaplets, Assignment Help, Ask Question on Chaplets, Get Answer, Expert's Help, Chaplets Discussions

Write discussion on Chaplets
Your posts are moderated
Related Questions
Real measurements never deliver the true value of the physical quantity or measurand. The measurement uncertainty consists of a random error and a systematic error. Most of the err

Permeability of Moulding Sand  is the property of the sand, which permits the gases and steam to escape through the sand mould. For this purpose, the sand must be porous. Permeabil

Question 1 (100 marks) As Surveyor in charge of an underground mine you have been instructed to design a tunnel to join a crosscut to a haulage drive. The details of the crosscut a

create 22 elements in scalar hint:for loop or any loop statement and append to previous variable element by elements

I have a fermenter case study which needs to be completed in the next 16 hours.

I am having difficulty with algebra pertaining toengineering

Review the lecture on BB document “Pharmacology …..” slide 6 where the solution for a 1st order system was demonstrated. The generic system is A(X)?(K1)?B(Y)?(K1’)?C(Z) 1. Cr


Q. Explain the following terms.             (i) Flash in forging.            (ii) Fullering and up setting in forging.            (iii) Trimming of

Wire Drawing involves pulling the metal through a die by means of tensile force applied to the exit side of the die.          A typical wire drawing operation is shown in fig.