360 - mini hypnodisc

[ian_humphrey]

A quick update for anyone interested.

360's disc loaded in the furnace ready for nitriding.


And this is where it's now being cooked for the next 2 days.

[calumco]

cool, what kind of temperature does it get heated to?

[ian_humphrey]

515 deg. C for 42 hours in a cracked ammonia atmosphere.

[Mouldy]

Nice one ian. Does it get quenched in acid after that? Hope it doesn't get to hot and come out as a big expensive melted lump lol

[ian_humphrey]

No, it's already had the acid dip. It helps to activate the surface to make the nitriding better.

[Mouldy]

Does it get quenched in oil then?

[ian_humphrey]

No, it doesn't get quenched at all. It hardens through a reaction of the nitrogen with the alloys in the steel, which is why only certain steels work. At the end of the 42 hours the middle bit of the funace gets taken out and left to cool in a protective atmosphere. This normally takes between 6-8 hours.

[grant_ploughbot]

You'll probably have a bit of polishing to do after dave It took weeks for us to clean ploughbot's and venoms armour and claw once they were nitrided.

[geeza]

Battery box modded and pulley repaired, ready for collection.

[Mouldy]

Hi ed i poped round after work n got the bits of your brother, The thread in the pulley is nakard at the bottom were the grub screw needs its strength. Hopefully it will be ok if i can find a longer grub screw. Thanks