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

DSP, bit reversed process 10 point dft

bit reversed process 10 point dft

Fundamentals of lift and drag , Lift and drag are merely the resolved compo...

Lift and drag are merely the resolved components in specific directions of a resultant aerodynamic force caused by the relative velocity V of the vehicle through the air. If al

Information, hi there i wonder if you could help me with this quistion? whe...

hi there i wonder if you could help me with this quistion? where would i find information specifying the minimum conductor size for electrial circuits can be obtained from A. BS76

Linear state space equations, Linear state space equations Linear state...

Linear state space equations Linear state space equations consist of a (difierential) state equation? x = Ax + Bu and an (algebraic) output equation y = Cx + Du whe

Linear programing, Description of the Diet Problem The goal of the diet pro...

Description of the Diet Problem The goal of the diet problem is to find an ”optimal” combination of foods that will satisfy all the daily nutritional requirements of an individual.

Local attraction, how can we find local attraction correction?

how can we find local attraction correction?

Development of surfaces, a hexagonal prism of 40mm side length of base and ...

a hexagonal prism of 40mm side length of base and height 80mm is resting on HP on its base with two edges of base is parallel to horizontal plane. A square hall of equally inclined

Mass balance reactions, A continuous fractionating column separates benzene...

A continuous fractionating column separates benzene and toluene into two product streams. We were given all the mass fractions which makes this question easy because all we must ca

Conceptual models, Can you describe an example of a conceptual model?

Can you describe an example of a conceptual model?

Phase array modelling, QUESTION: Modelling of phase array antenna for medic...

QUESTION: Modelling of phase array antenna for medical imaging. INSTRUCTION: The expert must provide a correct mathematical model solution and detail by detail steps of how it can

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