Amol Gupta
knowledgeSeaker2207
- Joined
- Dec 17, 2023
- Messages
- 53
Here is a reference to one of sreetips videos of melting silver shot.
@11:55 we can see an explosion as he melts the shot, I'd like some experts to comments on it.
A few thoughts in my mind.
He uses a slant wooden plank with running water to create shots.
Of the limited reading I have the cause of explosions seems to be the evaporated water that tries to escape the liquid at high pressure often violently.
From what I can see sreetips always tries to pour the molten metal at the junction of water and air on the wooden plank, he does not dump the metal directly in water which makes sense as it would lead to an explosion.
My question is why he doesn't pour the molten metal higher on the plank as it seems safer as highlted by the green circle in the image, are there any drawback to pouring metals higher on the plank?
I was also wondering if the height from which metal is poured affects the characteristics of the granules.
My second concern is one with respect to handling crucibles.
Here is a reference to another video
@3:20 we can see as he put the hot crucible on the surface the crucible seems to pop I was curious If someone has experienced the same and what causes such popping.
I have read graphite crucibles at high temperatures oxidise quicker reducing life expectancy and thus exposure to air should be limited.
Any other precautions while handling graphite crucibles in general will be helpful.
Thanks.
@11:55 we can see an explosion as he melts the shot, I'd like some experts to comments on it.
A few thoughts in my mind.
He uses a slant wooden plank with running water to create shots.
Of the limited reading I have the cause of explosions seems to be the evaporated water that tries to escape the liquid at high pressure often violently.
From what I can see sreetips always tries to pour the molten metal at the junction of water and air on the wooden plank, he does not dump the metal directly in water which makes sense as it would lead to an explosion.
My question is why he doesn't pour the molten metal higher on the plank as it seems safer as highlted by the green circle in the image, are there any drawback to pouring metals higher on the plank?
I was also wondering if the height from which metal is poured affects the characteristics of the granules.
My second concern is one with respect to handling crucibles.
Here is a reference to another video
@3:20 we can see as he put the hot crucible on the surface the crucible seems to pop I was curious If someone has experienced the same and what causes such popping.
I have read graphite crucibles at high temperatures oxidise quicker reducing life expectancy and thus exposure to air should be limited.
Any other precautions while handling graphite crucibles in general will be helpful.
Thanks.