Re: [MW:20852] Effect on Normalized material when Claded, (weld overlay, explosion bonding, etc.)

Thanks so much for the info!

I will look into using GTAW w/ external water cooling.

We have a customer who is requiring that all the material for a vessel be made from normalized carbon steel with stainless clad. We will be providing explosion bonded heads and cylinders and will be weld overlaying everything else. I was questioning what good the normalized material would be if we are going to line the entire inside with austenitic ss. I'm assuming also that the HAZ for those parts receiving weld overlay would be "un-normalized" to some degree, depending on interpass temps. Is this wrong?

On Friday, May 16, 2014 3:51:28 AM UTC-7, George Dilintas wrote:

All depends on the control of the heat input...You should keep the heat input as low as possible.
Why you do not use automatic GTAW with the pipe rotating and water cooling of the pipe's external surface?
GTAW offers low heat input.
The water cooling will allow low interpass temperature and rapid cooling of the normalized carbon steel.
Rapid cooling will prevent increase of grain size and thus normalization will not be harmed

In ASME IX there are rules for WPS and PQR for cladding

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)

Jimmy Taylor ---16/05/2014 13:39:13---Hi all! This is my first post, so please excuse my etiquette if improper. I'm sure

From: Jimmy Taylor <drum...@gmail.com>
To: material...@googlegroups.com
Date: 16/05/2014 13:39
Subject: [MW:20823] Effect on Normalized material when Claded, (weld overlay, explosion bonding, etc.)
Sent by: material...@googlegroups.com

---

Hi all!

This is my first post, so please excuse my etiquette if improper. I'm sure I will learn as I go.

Question: What is the effect on say (14"NPS x .500wall SA-106B-N) if I were to clad the inside with 1 layer of 309L and 2 layers of 316L via SMAW? I'm particularly interested in the effect the HAZ will have on the Normalization of the material.

Thanks in advance!!
 

 

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