Structural Integrity of A Standpipe Component in A Petrochemical Catalytic Cracking Unit : Part 2 - Assessment of Embrittlement Effects  

Oleh:

Gazini, Fernando T. ; Serra, Flavio A.S. ; Bueno, Levi de O. ; Marino, Luiz

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Engineering Materials and Technology vol. 122 no. 3 (2000), page 269-272.
Topik: structural; structural integrity; standpipe component; petrochemical catalytic cracking; embrittlement effects

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ87.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

During a shutdown for general maintenance of a catalytic cracking unit, intergranular manufactured from 2 1/4 Cr - 1 Mo steel. The cracking was observed to be related to intensive carbide precipitation in grain boundaries. To overcome the problem it was decided to heat - treat the relevant section of the component to dissolve these carbised and make possible its welding to a new virgin section of the tube. Samples of the material in its various conditions (virgin, ex - service, heat - treated and welded) were taken to check the efficiency of the thermal treatment in reducing the embattlement effects and to carry out a general assessment of the remaining life of the component related to creep behaviour considering notched bar creep speciments.

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