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

What is risk management, Defined risk management Give suitable examples of...

Defined risk management Give suitable examples of risk management Explain beifly

Reaction engines - aircraft maintance, These can be divided into several ca...

These can be divided into several categories. Turbojet engines. The turbojet was the first type of jet engine developed. In this engine all the air passes through the core engin

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

Financial management, The role of financial managers in the changing econom...

The role of financial managers in the changing economic scenario

Poultry numericals, design cage type poultry house for 1000 lying birds als...

design cage type poultry house for 1000 lying birds also specify the equipments for feeding,watering,lighting and protecting birds.

Various stages of creep, Q. Explain various stages of creep? Ans. CREE...

Q. Explain various stages of creep? Ans. CREEP: Creep can be defined as the process by which plastic flow occurs when a constant stress or load is applied to a material for a

calculate the input signal u and maximum speed, The purpose of a cruise co...

The purpose of a cruise control is to keep the velocity of a car constant. The driver drives the car at the desired speed, the cruise control system is activated by pushing a butto

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