Cracking a carburising pieces

[MiltonConnor]

Hi,

At work, I have a problem with cracked carburized pieces. Some pieces pass the test and some crack. After carburizing, the piece is resistance welded to the handle. The customer claims that the cause is too high a depth of cementation which is indicated in the figure. 0.25mm is required and the actual is 0.3mm. In my opinion, the load is piece primarily by the core and not the carburised surface. The initiation of the crack is on the lower part of the piece where the part is overheated due to welding. What is your opinion? Is it possible that the depth of cementation is responsible for cracking on the test?

https://speedtest.vet/

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Thanks for your feedback.

 

Can't access the picture.
Carburising and welding are two words rarely found in the same paragraph. But 0.25mm is not very deep.
Overheating? If you don't get that when welding you're not doing it right.
What is the steel being carburised?


"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[mfgenggear]

please draw a simple sketch, upload , I agree with IM, welding carburize parts is rarely done. but if done not in carburized areas.

 

[EdStainless]

Normally there would be a short portion at the end to be welded that would be masked and not carburized.
The combination of slight variations in carburization and welding could combine to create issues.

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P.E. Metallurgy, consulting work welcomed

 

[3DDave]

MiltonConnor is a spam account that typically copies/pastes from some other posts. That's why there are links to unrelated websites.

 

Well it is an unusual question for someone identifying as `petroleum`.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[IRstuff]

The sole purpose of this OP's postings is to entice people to click on his links. He doesn't seem to get that his links are so squirrelly that I wouldn't even take a chance

TTFN (ta ta for now)
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