why we are not doing positive material identification in carbon steel materials

[rao]

dear sir
why we are not doing positive material identification in carbon steel
materials
please explain it

[Manish...@linde-le.com]

 Carbon, Silicon, Sulfur, and Phosphorous are very light elements and it is not possible to quantify such as elements by performing PMI.
  Jigneshbhai ,your concurrence is requested for subject matter.

Regards,
Manish

rao <amma...@gmail.com> Sent by: material...@googlegroups.com 29/07/10 22:10 Please respond to material...@googlegroups.com

To "Materials & Welding" <material...@googlegroups.com> cc Subject [MW:6193] why we are not doing positive material identification in         carbon steel materials

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[Rohit Bafna]

Dear all,

 

In these cases, when you need to quantify C, S, P, Mn, and Si then you need to use PMI technique utilizing the portable optical emission spectrometer. Arcmet 8000 which we have is a good equipment to undertake such tests at site in a non destructive manner.

 

Regards,

Rohit Bafna

Director - Global Sales

 

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www.tcreng.com
Material Testing | Consulting | Inspection | NDT Services

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[jignes...@linde-le.com]

Dear Mr. Manish,

PMI (Positive Material Identification) is method to segregate / identify the particular material from the lot at the source / storage / before welding and during service also, without destructing it.

Presently, Portable X - Ray Fluorescence or Optical Emission Spectra Analyzers are widely used for PMI. Rather they become the identity of PMI testing.
Hence, it is to be noted that,  these are one of the method for material identification without destructing it.

These machines, normally handy instruments gives the chemical composition of the material, at any point of time. You can refer various instruments manufacturers(eg. oxford, Metorex etc)  website for further details, limitation of testing and operation details.

PMI testing is normally asked by process licenser, consultant, client in order to avoid the mix of material (in other word to identify the positive material ) in lot. Therefore, it is independent of  type of material.

With Best Regards,

Jignesh R Rana
Manager - QA & QC

Linde Engineering India Pvt. Ltd.
38, Nutan Bharat Society, Alkapuri, Vadodara 390007, India
Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobil:  +91 90999 86019
jignes...@linde-le.com, www.linde-india.com

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"Rohit Bafna" <ro...@tcreng.com> Sent by: material...@googlegroups.com 30-07-2010 09:52 Please respond to material...@googlegroups.com

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