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

Post graduation, i am doing be in mechanical engg in india. so can i do my ...

i am doing be in mechanical engg in india. so can i do my masters in geoophysic ?

Electrometallurgy, explain electrometallurgy for metal extraction process u...

explain electrometallurgy for metal extraction process using a schematic diagram

Speed control in aircraft engine, Speed control in Aircraft Engine: Bec...

Speed control in Aircraft Engine: Because the APU is designed to run at a constant rpm, some means must be provided to control this speed. Such a control device is known as a

Rake angle, the effect when side relief angle is too much

the effect when side relief angle is too much

Gated pattern, Gated pattern is used to produce good casting. It is esse...

Gated pattern is used to produce good casting. It is essential to make sure that full supply of molten metal flow into every part of the mould. Provision for easy passage of the

Matlab assignment, can you formulate a program using only bubblesort for as...

can you formulate a program using only bubblesort for assigning grades in an array?

Aerodynamics-source of drage, Source of drage Total Drag on an aerofoil...

Source of drage Total Drag on an aerofoil is called profile drag - Skin friction • due to tangential force arising from friction - Pressure • Form - due to the inte

Fire risk assessment in usa - fire protection engineering, Fire risk assess...

Fire risk assessment in USA: The document NFPA 551:2010 is entitled Guide for the Evaluation of Fire Risk Assessments.   In this document is set out the American use of the

Calculate the heat transfer coefficient , Water is flowing at 0.5 ms-1 acro...

Water is flowing at 0.5 ms-1 across a 7.5 cm diameter sausage at 80°C. If the bulk water temperature is 15°C, estimate the heat-transfer coefficient. a) What type of heat tranfe

Legal issues and professional ethics in engineering, Write a detailed repor...

Write a detailed report under the theme "Legal Issues and Professional ethics in Engineering". Some of the topics that you can consider, but not limited to them, are as follow:

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