Re: [MW:18833] Clad plate heat treatment as per SA 264 after explosion bonding

How do you avoid sensitazation of 316?
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

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  From: "nshetty1981@gmail.com" [nshetty1981@gmail.com]
  Sent: 10/01/2013 10:23 PM ZE4
  To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
  Subject: Re: [MW:18831] Clad plate heat treatment as per SA 264 after explosion bonding

Hi

Heat treatment of a explosion bonded plates can be done. There wont be any problem with respect to precipitation.  We have done SA 516 gr 70 + 316 L plate nd we have done it for higher thickness plates where the base is 85 +3 mm clad nd after final fabrication the vessel is pwht. Thickness lower than 40 mm will need pwht after explosion bonding since to improve the tensile values and remove the stress due to explosion bonding. The heat treatment after explaosion will be based on the thickness nd to a max of 30 min to 45 min. 

Regards

Nitin Shetty

Sent from Samsung Mobile

-------- Original message --------
From: nishant nair <nishant852003@yahoo.com>
Date: 30/09/2013 21:09 (GMT+04:00)
To: materials-welding@googlegroups.com
Subject: Re: [MW:18819] Clad plate heat treatment as per SA 264 after explosion bonding

Hi there Mr. Krishna, Well as far as the heat treatment is concerned no deviation from d standard should be accepted. So please be firm on that account if applicable. Explosion bonded plates can be separately heat treated before explosion bonding and which I think is a feasible option. Reason I think is due to difference of heat treatment procedures of two different metals i.e. annealing and normalizing. This is accepted by SA264 standard also. Pls go through. Nothing is mentioned regarding the heat treatment of explosion bonded plate in the standard. Thanks and regards, Nishant Nair Sent from Yahoo! Mail on Android

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From: george.dilintas@gr.bureauveritas.com <george.dilintas@gr.bureauveritas.com>;
To: <materials-welding@googlegroups.com>;
Subject: Re: [MW:18817] Clad plate heat treatment as per SA 264 after explosion bonding
Sent: Mon, Sep 30, 2013 12:30:00 PM

The issue is the following: The explosion bonding process will affect the properties of the 304 austenitic s.s? With other worlds: the explosion bonding will lead to a precipitation of the chromium carbides and therefore a solution annealing heat treatment will be necessary to get a solution of those carbides in the 304 matrix? Can your material manufacturer guarantee the properties of 304 without heat treatment? Could you ask for the parameters of the explosion bonding process? Could your manufacturer give you the temperatures which develop during this process and the relevant time periods?   best regards Dr. Georgios Dilintas Authorized Nuclear Inspector Authorized Inspector Supervisor API 510 Inspector Prelude FLNG ASME Subject Matter Expert 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 Korea cell phone: +82 10 2777 8922 krishna mudhale ---27/09/2013 19:36:38---Dear experts, Please clarify our issue ie. In our case clad plate(SA 387 Gr.11 From: krishna mudhale <kmudhale@gmail.com> To: materials-welding@googlegroups.com Date: 27/09/2013 19:36 Subject: [MW:18785] Clad plate heat treatment as per SA 264 after explosion bonding Sent by: materials-welding@googlegroups.com Dear experts, Please clarify our issue ie. In our case clad plate(SA 387 Gr.11 Cl.1+SS 304L), as per our customer spec.  Heat treatment of the clad plate shall be as per applicable clad plate material specification ie.SA 264 . But our clad plate manufacturer insists that for higher thickness clad plates heat treatment is not required(ie.46,54,75Thk) & for lower thickness he will perform heat treatment(ie.24&28Thk). So my question is as per SA 264 is heat treatment is required or not for clad plates after explosion bonding and if required which type of heat treatment is required. Please clarify my query & thanks in advance for your valuable feedback. -- With Warm Regards Krishna Mudhale -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com

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