Vào 10:18:58 UTC+7 Thứ tư, ngày 27 tháng tám năm 2014, pgoswami đã viết:
Hi Nguyen,
The HT performed in the PQR was "Stabilizing Anneal". Typically this HT is recommended for SS 321 or SS 347 in refining environments. Ref NACE SP-170-2012 for details.
For safe PQR qualification with stabilizing anneal:-
From: material...@googlegroups.com [mailto:material...@googlegroups.com ] On Behalf Of nguyen tuan
Sent: Monday, August 25, 2014 5:22 AM
To: material...@googlegroups.com
Subject: Re: [MW:21691] Bend test was broken on A312 TP 321--DearFollowing specification" Where specified in Contractor Standards or by Licensor, fabrication welds in Type321/321H or 347/347H stainless steels shall be subject to a thermal stabilization at910ºC±10ºC for 4 hours "Best regards,Vào 16:12:00 UTC+7 Thứ hai, ngày 25 tháng tám năm 2014, George Dilintas đã viết:321 is quenched and tempered in order to stabilize the austenite.
Why you did normalizing?best regards
Dr. Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)Mahendra Arya ---25/08/2014 08:04:12---Dear friend May I know y u have normalizing for 8 hours....
From: Mahendra Arya <mkarya...@gmail.com>
To: material...@googlegroups.com
Date: 25/08/2014 08:04
Subject: Re: [MW:21684] Bend test was broken on A312 TP 321
Sent by: material...@googlegroups.com
Dear friendMay I know y u have normalizing for 8 hours....
Is it any spec or job requirement...On 23-Aug-2014 11:35 am, "nguyen tuan" <tuanpvecc@gmail.com> wrote:
Hi All
when we carryout PQR for material A 312 TP 321 welding to A312 TP 321 (pipe 8'' SCH 120)
1. Welding Process GTAW+SMAW
2.Welding consumable ER347+E347-16
3.Interpass max 175 oC
4.pwht :900 Celsius at 8 hours
5. Code applied ASME
problems: 2 side Bend test were broken
Can some body know or have experience above problem
Tuan
QA/QC posco
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