TCM 1 1072-AHG Ateliers de la Haute-Garonne – Flourens (FR)

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Conditions for approval required by:  Julien Gauther

4 Replies to “TCM 1 1072-AHG Ateliers de la Haute-Garonne – Flourens (FR)”

  1. EN3037-040016AF CoC : sample size for macro/micrographic examinations is 25 parts instead of 5.
    Could you please clarify?

    EN3820-120:
    Solution heat treatment parameters: cooling area temperature range is from 0°C to 9999,99°C.
    Quenching should be carried out in cold water. Could you please check this aspect?

    Macrographic examination – head grain flow lines.
    From my point of view, we have a break in flow lines (appendix 4): the head has a “whitish” appearance bounded by two lines and this area has a kind of “dovetail recess” shape.
    Grain flow lines in shank are dark and closely conform to the contour.
    Is this examination carried out before or after heat treatment?
    However, fatigue tests are compliant.

    In CoC, Sample size for macro/micrographic examinations is 40 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
    Could you please clarify?

    EN4072-040:
    In QTR, clause 3, could you please replace “ISO142796” by “ISO14276”?
    In the marking picture, inside the recess, it seems there is a “dark point”. Could you please confirm or not?
    Is there any connection with MIL-DTL-83488, clause 3.5.4?

    Macrographic examination – head grain flow lines.
    From my point of view, we have a break in flow lines (appendix 4): the head has a “whitish” appearance separated with a straight line just below the head to shank radius.
    Below this line, grain flow lines in shank are dark and closely conform to the contour.
    Is this examination carried out before or after heat treatment?
    For this reference, fatigue test is not applicable.

    At the end of CoC, Sample size for macro/micrographic examinations is 25 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
    Could you please clarify?

    EN4072-060:
    At the end of CoC, Sample size for macro/micrographic examinations is 25 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
    Could you please clarify?

    Many thanks in advance,
    Best regards.

    1. After discussion with AHG , herewith the reply to your remarks

      EN3037-040016AF CoC : sample size for macro/micrographic examinations is 25 parts instead of 5.
      Could you please clarify?

      Answer :
      In fact this is only macrography as visual inspection not for micrography

      EN3820-120:
      Solution heat treatment parameters: cooling area temperature range is from 0°C to 9999,99°C.
      Quenching should be carried out in cold water. Could you please check this aspect?

      Answer :
      AHG doesn’t know the origin of this mistake ( you can see in the 3037 report the temperature of the quenching) . Investigation at AHG is running. Nevertheless , this reference has been failed for fatigue issue ( and investigations are still running as well for this issue)

      Macrographic examination – head grain flow lines.
      From my point of view, we have a break in flow lines (appendix 4): the head has a “whitish” appearance bounded by two lines and this area has a kind of “dovetail recess” shape.
      Grain flow lines in shank are dark and closely conform to the contour.
      Is this examination carried out before or after heat treatment?
      However, fatigue tests are compliant.

      Answer:
      This examination has been made after heat treatment . This area is highly compressed by the forging. The flow lines are difficult to see in this area due to very fine grain size.

      In CoC, Sample size for macro/micrographic examinations is 40 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
      Could you please clarify?

      Answer ;
      Macrography means visual inspection which has been on 40 samples

      EN4072-040:
      In QTR, clause 3, could you please replace “ISO142796” by “ISO14276”?

      Answer :
      updated QTR with correction has been reloaded

      In the marking picture, inside the recess, it seems there is a “dark point”. Could you please confirm or not?
      Is there any connection with MIL-DTL-83488, clause 3.5.4?

      Answer:
      It is a shadow on the picture. The contact point are not in this area ( thread )

      Macrographic examination – head grain flow lines.
      From my point of view, we have a break in flow lines (appendix 4): the head has a “whitish” appearance separated with a straight line just below the head to shank radius.
      Below this line, grain flow lines in shank are dark and closely conform to the contour.
      Is this examination carried out before or after heat treatment?
      For this reference, fatigue test is not applicable.

      answer :

      this examination has been made after heat treatment .This area is highly compressed by the forging. The flow line are difficult to see in this area

      At the end of CoC, Sample size for macro/micrographic examinations is 25 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
      Could you please clarify?

      answer :
      Macrography means visual inspection which has been proceeded on 25 samples

      EN4072-060:
      At the end of CoC, Sample size for macro/micrographic examinations is 25 parts instead of 5 for qualification (and as per ISO9152, table 6 for acceptance).
      Could you please clarify?

      answer :
      Macrography means visual inspection which has been proceeded on 25 samples

      1. in addition new NADCAP certification has been uploaded for CP and MTL . for CP there are two certificats , one for the main site , the other for the Chemical processing workshop AURCAD

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