Hammer heats

[ApprenticeMan]

What is going on when you hammer on steel and it makes it get hotter/keep it's heat longer? Is it really friction in the steel?

[easilyconfused]

Not a physicist or anything special, xxxx I have a hard enough spelling it, but I think that's all it is. The conversion of your kinetic energy from the hammer into heat since energy can't be lost nor gained, just converted. There my be other factors, but friction seems the most likely.

[ThomasPowers]

This exact same question was recently answered in depth on another forum. Strange to see it again so soon.

[easilyconfused]

Which forum?

[ThomasPowers]

One of the ones I follow so it would be Primal Fires, AnvilFire, Sword Forum, ArmourArchive Forgemagic or here...

Just ran accross it over at ArmourArchive.org Design and Construction forum " Why does metal heat up when hammered?"

Thomas

[Dodge]

I have seen this happen especially under a power hammer. You move the metal so fast, it adds to the heat. What happens when you quickly, bend a wire coat hanger back and forth untill it breaks? is gets pretty hot b4 it breaks

[FredW]

I believe that the heat has more to do with the compression of the steel rather than friction but both convert energy to heat and would be present. The compression may well be friction within the material, but I'm not a physicist either.
This reminds me also when at the Ozark conference I was watching Tsur Sadan working some steel and noticed the place where he was hammering was getting redder. It really demonstrated the effect well.

Fred

[primtechsmith]

About a year ago I was watching a guy forge out these extremely small heart hooks. He was forging out the two pieces to make the heart. This smith believes in a lighter hammer and rapid strokes...I watched the thing go from bright yellow to orange and maintain that heat until he stopped. It was pretty dang impressive.

Dodge-great way of putting it.

Peyton