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Old 27th May 2021, 03:14 AM   #1
Anthony G.
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Default keris forging crack

Hi, anyone has experience that why new keris will have forge crack?
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Old 27th May 2021, 03:57 AM   #2
A. G. Maisey
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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.
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Old 27th May 2021, 04:04 AM   #3
Anthony G.
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Quote:
Originally Posted by A. G. Maisey View Post
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.
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Old 27th May 2021, 08:33 AM   #4
A. G. Maisey
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My pleasure.
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Old 27th May 2021, 03:37 PM   #5
David
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Quote:
Originally Posted by Anthony G. View Post
Hi, anyone has experience that why new keris will have forge crack?
Some good photos of the crack would probably aid a discussion.
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Old 30th May 2021, 02:54 PM   #6
JBG163
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You can also have perpendicular cracks to the edge, that can be identify by a too hot quench of the blade.
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Old 30th May 2021, 09:39 PM   #7
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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.
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