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

Environemental, How to Compute the carbon per mile for the car

How to Compute the carbon per mile for the car

Dsd subject, give me basic programming of vhdl

give me basic programming of vhdl

Tcp/ip, Discuss the effect of supernetting on routing and explain how the i...

Discuss the effect of supernetting on routing and explain how the issue has been tackled. Effect: increased routing information

Abradable linings-aircraft engine, Abradable Linings: Abradable Linings...

Abradable Linings: Abradable Linings are usually made of a composite material which will be abraded away should the tip of a rotating blade touch the material. In flight the ca

Math problems solutions matlab, Matlab is a 4th technology selection langua...

Matlab is a 4th technology selection language, which is designed by The MathWorks. It provides an exact processing atmosphere. Matlab works a variety of math features like design o

Junction diode summary, The PN junction region of the Junction Diode has ...

The PN junction region of the Junction Diode has the following significant characteristics: Semiconductors contain two types of mobile charge carriers, Electrons and Holes

Logic gates and gate, Expertsmind.com  brings you unique solution in Elect...

Expertsmind.com  brings you unique solution in Electrical Engineering Logic GATES   Logic gates process one or more input signals in a logical manner. Depending on th

Secondary operations in powder metallurgy methods, Q. What are the secondar...

Q. What are the secondary operations we apply in powder metallurgy methods. Give their use also. Ans. Secondary Processes of Manufacture : In addition to the basic proce

Adders and subtractors, Adders & Subtractors Adder and Subtractor circui...

Adders & Subtractors Adder and Subtractor circuits are used to perform basic calculations in computer systems. Adders, as their name suggests, add binary digits. Since binary

4 bit comparator, process / description.. if I put A=1000 and B=0100 A>B ga...

process / description.. if I put A=1000 and B=0100 A>B gate will show output 1 and dose A

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