keris forging crack

[Anthony G.]

Hi, anyone has experience that why new keris will have forge crack?

[A. G. Maisey]

Depends on the type of crack Anthony, but common causes in forged work are material, ie, iron & steel, that is known as "hot short", in other words it does not forge easily and is subject to cracking under the hammer.

The second very common cause of a perceived crack is called a "cold shut". This occurs when the material is not at optimum temperature to achieve a weld, and/or the surfaces to be welded are insufficiently clean and/or a flux has not been used where it was necessary. A cold shut is not really a crack, but it often looks like one.

[Anthony G.]

Originally Posted by A. G. Maisey

Depends on the type of crack Anthony, but common causes in forged work are material, ie, iron & steel, that is known as "hot short", in other words it does not forge easily and is subject to cracking under the hammer.

The second very common cause of a perceived crack is called a "cold shut". This occurs when the material is not at optimum temperature to achieve a weld, and/or the surfaces to be welded are insufficiently clean and/or a flux has not been used where it was necessary. A cold shut is not really a crack, but it often looks like one.

Hi Alan, thanks for sharing.

[A. G. Maisey]

My pleasure.

[David]

Originally Posted by Anthony G.

Hi, anyone has experience that why new keris will have forge crack?

Some good photos of the crack would probably aid a discussion.

[JBG163]

You can also have perpendicular cracks to the edge, that can be identify by a too hot quench of the blade.

[A. G. Maisey]

JBG, I believe that if you care to test the base cause of this type of longitudinal crack you will find that it is evidence of a cold shut, the stresses of heat treatment merely expose this cold shut.