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Old 09-13-2017, 04:32 AM
AussieTom AussieTom is offline
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Default Welding "Mangaloy"

Hi all,

Im wondering if anybody out there has experience with welding Manaloy, otherwise known as Hadfield steel? Ive got a wrecking yard electromagnet that needs to be repaired, and i have no knowledge on this material, and cant find consistent information with a simple google search.
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Old 09-13-2017, 06:08 AM
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From what I've read it is very close to Manganese steels in general, with a minor addition of chrome or vanadium as a stabilizer. I would then think that you could weld it with a Manganese intended welding rod. We use S-180 from a company in Michigan. Our application is repairing our shot blasting equipment which is mainly manganese steel plates overlapping like scales bolted to a carbon steel frame.
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Old 09-13-2017, 08:31 AM
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Pretty thorough discussion over at AWS.

https://app.aws.org/forum/topic_show.pl?tid=10796
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Old 09-13-2017, 03:00 PM
AussieTom AussieTom is offline
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Originally Posted by milomilo View Post
Pretty thorough discussion over at AWS.

https://app.aws.org/forum/topic_show.pl?tid=10796
I read that, along with lots of others and a few reaserch papers. I understand the Austentite phase transformation, my problem is trying to re-weld a deep groove butt in already work hardened material. Its a very restricted fabrication, and the low thermal transfer of the parent seems to be causing shrinkage cracking in the weld.

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Old 09-13-2017, 08:34 PM
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Quote:
Originally Posted by AussieTom View Post
I read that, along with lots of others and a few reaserch papers. I understand the Austentite phase transformation, my problem is trying to re-weld a deep groove butt in already work hardened material. Its a very restricted fabrication, and the low thermal transfer of the parent seems to be causing shrinkage cracking in the weld.

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When welding stuff like that I always use a needle gun to peen the crap out of each weld immediately after welding. It does reduce the cracking tendency.
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Old 09-13-2017, 11:25 PM
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Quote:
Originally Posted by milomilo View Post
When welding stuff like that I always use a needle gun to peen the crap out of each weld immediately after welding. It does reduce the cracking tendency.
I was thinking i might try that. Can be a pain in the ass as your runs have to be very short to catch it on the cool down.

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Old 09-17-2017, 05:53 PM
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Originally Posted by USMCPOP View Post
Do be careful that you have especially good ventilation when welding high-manganese steel.
Good call manganese is one of those that can cause brain and speech impairment with heavy doses.
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Old 09-17-2017, 06:04 PM
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Good call manganese is one of those that can cause brain and speech impairment with heavy doses.
Ssssay what? Hhhhuh? My ssscreen is kinda blurry. Never did trust the Manganese after they bombed Pearl Harbor.
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Old 09-18-2017, 03:41 AM
AussieTom AussieTom is offline
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Thanks for the saftey heads up. Job has been pushed aside for the moment. Big rush on spooling, then a unobtanium heat exchanger. Thing will be sitting in the corner haunting me though.

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