Mechanical Engineering - Workshop Technology - Discussion

24. 

The property of sand due to which it evolves a great amount of steam and other gases is called

[A]. collapsibility
[B]. permeability
[C]. cohesiveness
[D]. adhesiveness

Answer: Option B

Explanation:

No answer description available for this question.

Abhishek Rathi said: (Jan 19, 2014)  
In the sand there are pores through which the gases and the moisture in the sand comes out this property is known as permeability.

Baji Babu.B said: (Nov 3, 2014)  
Thank you for @Abhishek giving valuable answer.

Vivej said: (Dec 15, 2014)  
Collapsibility by absorbing heat collapse and release steam in gases.

Govind Jadhav said: (Jan 17, 2015)  
Permeability means to removing air/gasses from the mold. Due to which chances of porosity in casting. Permeability word related to casting process. While molten metal/alloys pour in casting pattern, due hot gasses/air proper casting not produces.

Kamaljit Singh said: (Apr 3, 2016)  
Yes! B is right.

Shakir said: (Oct 20, 2016)  
Yes, I understood now, Thanks for the explanation.

Ch V Gopi Nath said: (Jun 14, 2017)  
Permeability is the property of the sand to pass the gases through it.

Biswarup Das said: (Nov 10, 2018)  
Thanks for this explanation.

Ramkumar said: (Mar 24, 2019)  
Permeability is property of mold send & it's control by mold send grain size.

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