The microstructure of a petrochemical plants and critical components of power plants will over time degrade when exposed to high temperature, high stresses and corrosive atmosphere.
One of the purpose of performing in situ replication is to determine the extent of thermal degradation or thermal aging from the microstructure appearance. Prolonged exposure to high temperature will cause microstructures to decompose and eventually result in creep cracking.
By replication technique, microstructure can be obtained at site non-destructively to safely judge the condition of the component. The results obtained can be used to identify previous heat treatment process and to verify the required temperature setting for post weld heat treatment (PWHT) for repair work purposes, and as a reference for future inspection and maintenance work arrangement.The processes of producing replica at site are based on international code and standard as follow:
a. ASTM E3: Standard Guide for Preparation of Metallographic Specimens
b. ASTM E407: Standard Practice for Microetching Metals and Alloys
c. ASTM E1351: Standard Practice for Production and Evaluation of Field Metallographic Replicas
a. ASTM E3: Standard Guide for Preparation of Metallographic Specimens
b. ASTM E407: Standard Practice for Microetching Metals and Alloys
c. ASTM E1351: Standard Practice for Production and Evaluation of Field Metallographic Replicas
d. ASTM E1558: Standard Guide for Electrolytic Polishing of Metallographic Specimens
4 comments:
Artikel menarik. Amat kurang atau tiada langsung blog yg menceritakan tentang Replica testing ini. Di UniMAP saya mengajar replica testing (in-situ metallography) kpd pelajar sarjanamuda kejuruteraan metallurgi. Harap dapat mengenali tuan punya blog..
Dear Mr. Shaiful, thanks for your comment. Sorry for late follow-up comment. For your info, we have already launch our official website called www.profmetal.com.
As far as your profile are concerned, we do have in our record all the active and inactive replica operators in malaysia namely: SIRIM team, TNB Research team, MINT team, Nusatek team, DNV team, Metacos team and so on...
To contact us, please email to admin@profmetal.com.
Thank you.
Admin
Profmetal Sdn Bhd
Tahniah Profmetal Sdn Bhd
Saya sebagai replicator (beginner) amat menghargai tindakan tuan untuk mengetengahkan method seprti ini untuk kebaikan industri yang juga tidak terhad kepada petrochemical sahaja..
Nice and informative blog!!
Keep it always updated.
metallographic equipment
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