AMS 2750 E Clause3.5.17.13 TUS Pass/Fail Requirements

J

Jacobo

Hello Everyone,

This is Jacobo from a mysterious corner of the world, and it is my first thread in this forum, I'm a heat treater in aerospace field.
Currently I'm involved with the commissioning of a Vacuum Heat Treat furnace(60x600x900mm), but we have a TUS problem at one temperature, the last TUS sensor entered the lower limit in 60 minutes.
In accordance with 2750 E Clause 3.5.17.13[The time required to achieve recovery, stabilization, or recurrent temperature pattern did not exceed the time limit specified in any applicable process specifications.], I asked our supplier to meet the requirement of 30 minutes, do you guys have quantitive time of this requirement? Or may someone supply a customer specification(GE RR) on hand?

Thank you
 
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Al Rosen

Leader
Super Moderator
Hello Everyone,

This is Jacobo from a mysterious corner of the world, and it is my first thread in this forum, I'm a heat treater in aerospace field.
Currently I'm involved with the commissioning of a Vacuum Heat Treat furnace(60x600x900mm), but we have a TUS problem at one temperature, the last TUS sensor entered the lower limit in 60 minutes.
In accordance with 2750 E Clause 3.5.17.13[The time required to achieve recovery, stabilization, or recurrent temperature pattern did not exceed the time limit specified in any applicable process specifications.], I asked our supplier to meet the requirement of 30 minutes, do you guys have quantitive time of this requirement? Or may someone supply a customer specification(GE RR) on hand?

Thank you
How did you arrive at 30 minutes? Do you have a customer spec that requires this?
 
J

Jacobo

How did you arrive at 30 minutes? Do you have a customer spec that requires this?
Hi Rosen,
Just come back from the holidays.
See attached figure, we have the lag time requirement, less than 30 minutes. But I don't find the same requirement in our customer HT specification.
Any discussion is appreciated.
TUS.png
 
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