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wingman1985
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Join Date: Jul 2009
Location: China
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Forging Test Coupon

08/18/2011 8:59 PM

A representative test coupon, a minimum of 6" in length, taken from a prolongation of production forged string shall be machined to the vertical and horizontal dimensions of the forging it represents at a frequency of at least one per heat or remelt ingot, per heat treatment load.

How do you understand the word of "prolongation "? Thank you.

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lyn
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#1

Re: forging test coupon

08/18/2011 9:05 PM

I'd say that prolongation is the same as pressing or forging as in a factory. Each prolongation would yield a thinner product, but would produce a stronger "forging".
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Tornado
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#2

Re: Forging Test Coupon

08/18/2011 9:50 PM

After a run of forged pieces, some extra (≥ 6") infeed material is also run through. The test coupon is taken from this extra, rather than sacrificing an entire forging.

[I think.]

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wingman1985
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#3

Re: Forging Test Coupon

08/18/2011 10:01 PM

Thank you both for your kind reply!

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