What is Case Hardening?

[LifeisGood762]

So what is the case generally made of that you pack everything in? How do you get it sealed?

Very nice video, thank you. Cool picture at the end with the gun reciever and hammer with beautiful coloration.

[solorip]

.Thanks for the knowledge. Very well done

[RLScheurman]

steel does not have pores, it has a crystalline structure. that kind of mideval thought is very outdated science

[metzindustries]

can you use sugar for case hardening instead of oil? since sugar does not melt off as fast?

[Appclypse]

Interesting. I had no idea about this technique i would have thought adding carbon to the steel would make it far more brittle and generally weaken the structure. I'd be interested to know the exact chemistry behind how it toughens the steal

[TheMuslimKiller]

@Appclypse First of all there are plenty of reasons why one would want a soft inner core and harder outer shell.

Japanese Samurai swords or any type of steel that will suffer blows will need to have a softer inner core. Ok now to Appclypse, yes carbon makes it harder but it will become more brittle, the proper way is to have softer inner core. You get a hard edge which gives you razor edge but soft inside so the sword wont snap off. This is why your teeth are so durable, very soft stuff inside.

[Appclypse]

@TheMuslimKiller Yeah cheers for the info. I did a bit of reading after watching this about the technique used by japanese sword smiths and i read about their complexe heat treatment teqniques involving laying the sword packed around carbon rich substances for fixed ammount of times before heating and cooling. Very interesting stuff.

[TheMuslimKiller]

@Appclypse My great grandfather was a blacksmith who made knives, swords, and even guns.

One thing about this industry is that it is very secretive, the techniques are passed down from one generation to the next all in the family. He actually worked with folded Damascus steel, true Damascus not the crap that just looks like it without all the metallic qualities. Since I am not in the business I will reveal one of his secrets.. quenching in human hair, smell is unbearable but worth it.

[Appclypse]

@TheMuslimKiller It's madness how they discover these things, i just can't think of a scenario in which that technique would be discovered. Although i suppose other knowledge would feed into these discoveries, but still these men and women really made some fantastic discoveries furthering the science.

[TheMuslimKiller]

@Appclypse Well it's interesting but the Damascus style of hardening / heat treating was discovered accidentally. These days they usually call Damascus style only for it's looks the layered colors. But there are true Damascus steel makers still. Anyway it was discovered by mistake because in Damascus the British had pretty much come in and exhausted most of the mines of different steels, so people didn't have much to work with. So they took a little bit from each mine and combined them together

[azizeqab]

Thx alot I'd remove the music while ur talking in future videos its a little distracting...

[onlyrajarocks]

nice vid

[abidali098]

Dear sir,

I want to case harding of High speed steel M2 could you please explain it. If you can so i am very thank full to you .

[gamerdude141]

I think case hardening on guns is ugly.

[TheMuslimKiller]

@gamerdude141 The antique look is ugly, although if properly done, you get this rainbow colored look which is beautiful. You can see this on pocket knives like the Kershaw Rainbow Leak.

[AndreaGanora]

Nice video, clear explenation, thanks

[peasplease2]

the music is so annoying

[adisharr]

Very well done - I had no idea the Amish were this knowledgeable about steel.

[EarlRausch]

@adisharr

hehe was going to post the very same thought. :)

[ninjaman1138]

horray!!!

very informative!!!

was looking for this!!!

explained exactly what i want. do more my good man DO MORE

i want to learn about making glow engines and case hardening was mentioned when working with the softer easier metals

thanks

[transdetendal]

im a sheet metal smith or klein smith and not a black smith  but its the same scooling and i never heard this before tho ive practised it worckin on knives, nice to know what ive doing right thanx 4 the explinin

[latinojoto1234]

hey good video i just have a question you say that if i have a 1.5 milimeter they can be full hardened cause i have one and i want to hardener is carbon steel 1018

[BigMaxTube]

Well presented and told me what I wanted to know. Thanks for posting

[chivemonkey1]

the video is very detailed cheers

[hotonpi]

Well done - help explain some questions I had. Thanks!

[QuietBearr]

no problem

[closetpunk2006]

Nice, thanks

[QuietBearr]

glad you liked it!

[bushmag]

Ahh my machete will be casehardend.. since it's from an old chimneyvalve and its pretty soft steel.. nice vid!

[QuietBearr]

have fun with that, looking forward to seeing it!

[cutlerylover]

great vid, I only see case hardening in some old western replica guns..like the colt 45 and peacemaker models...

[cutlerylover]

oops, lol I replied too soon annd saw you mention the guns at the end..

[QuietBearr]

yea lol, not to common on knives, but I have seen some customs that where case hardned from like old horseshoes and such.

[cutlerylover]

yeah, there is a popular design fixed blade made from a railroad spike, where they simply twist the handle and flatten the blade, I ahve seen a few versions of that which was case hardened, but alot of those are just polished, or natural looking...

[QuietBearr]

True, it is extremely popular, prolly cause you can get loads of spikes for free, so thus making the knife is just about free as well....

But the downside is that it is just a poor steel for knives, even with case hardening....

[K1RKH4MM3T]

Dude, how do you know all this? Do you wok in the steel industry or something?

[QuietBearr]

nope just a hobby

[K1RKH4MM3T]

Ah, cool. Thanks for sharing with us

[QuietBearr]

no problem, thanks for watching

[wildlifeed]

Awesome Job!! 5/5 Ed

[QuietBearr]

Thanks man, you are like the best sub I have! lol (no offense to all you others!)

[redsoxnation32]

could do without the music............. but still, great video!

[QuietBearr]

lol some like it some dont, I tend to like it as it levels out the video and makes it a bit less boring in parts.

Did you just not like the music selection or would rather not have any.

[redsoxnation32]

not a big fan of elavator music. maybe something with a stronger beat

[QuietBearr]

next time I will choose something with a stronger beat for you.