<p>After an a object is formed through direct laser sintering, as a post-processing procedure the object is sent for hot-isostatic pressing, In hot isostatic pressing the sintered object is placed in a mold and then pressure and heat are applied.
I was wondering what would go wrong if the bare object without the mold was made to undergo pressing? Remember the sintered object already has a shape acquired during sintering so it may need a mold to get a specific shape during pressing. My assumption- In hot isostatic pressing the object might get softened and hence deformed due to heat and thus the requirement of a mold to keep the object firm. Is this assumption true??
And apart from deformation are there any other undesirable effects caused to the un-molded object during hot isostatic pressing?</p>

CC BY-SA 4.0
2020-02-20T23:07:53.797Z
It isn't done in a mold, not at the company I work. Very high pressure and temperature of an inert gas in a pressure vessel. We print in Aluminum-, Titanium- and Nickel based Superalloys. Note that it isn't that porous to change the dimensions drastically.
0scar
CC BY-SA 4.0
2020-02-21T15:28:22.490Z
@0scar Is there any specific name given to the process
Somanna
<post-processing><laser><metal-printing><metal-parts><printing-powder>
Why is a mold required in isostatic pressing after performing Sintering
Somanna
# Why is a mold required in isostatic pressing after performing Sintering

(Asked by: username_0 on 2020-02-20)

After an a object is formed through direct laser sintering, as a post-processing procedure the object is sent for hot-isostatic pressing, In hot isostatic pressing the sintered object is placed in a mold and then pressure and heat are applied.
I was wondering what would go wrong if the bare object without the mold was made to undergo pressing? Remember the sintered object already has a shape acquired during sintering so it may need a mold to get a specific shape during pressing. My assumption- In hot isostatic pressing the object might get softened and hence deformed due to heat and thus the requirement of a mold to keep the object firm. Is this assumption true??
And apart from deformation are there any other undesirable effects caused to the un-molded object during hot isostatic pressing?

**Tags:** post-processing, laser, metal-printing, metal-parts, printing-powder

> **Comments:**
> **username_1**: It isn't done in a mold, not at the company I work. Very high pressure and temperature of an inert gas in a pressure vessel. We print in Aluminum-, Titanium- and Nickel based Superalloys. Note that it isn't that porous to change the dimensions drastically.  
> **username_0**: @username_1 Is there any specific name given to the process  

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## 0 answers

