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McQuaid Ehn Grain Size Test Sample

McQuaid Ehn Grain Size Test Sample

McQuaid Ehn Grain Size Test Sample

(OP)
Has any one ever used a "stream sampler" lolly pop obtained during the teeming of an ingot to run a grain size rather than using a sample from rolled product.

RE: McQuaid Ehn Grain Size Test Sample

Uh, are you at all aware of what is known as "grain refinement" during the hot working of steel?

RE: McQuaid Ehn Grain Size Test Sample

(OP)
Yes, I am well aware of the effect of hot working and rolling on grain structure. It was suggested in a meeting to try a chem lolly pop as an alternative to a product sample to run the austenitic grain size test. On occasion the GS tests were not available and the only recourse was to notch the product to obtain a sample. I had never heard of any one ever using the chem sample for this purpose -- but you never know. We have carburized several tests, but are getting mixed results.    

RE: McQuaid Ehn Grain Size Test Sample

Guess I don't understand the purpose.  Why would you care what the as-cast GS is?  It will be huge.

RE: McQuaid Ehn Grain Size Test Sample

(OP)
Appreciate the comments. I concur 100%

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