Actually it is debatable, depending the amount of dilution takes place.
Case1: What if you touch 4130 surface during this process of 2nd layer (it’s just 1.5mm thick clad)
Case2: suppose you deposit 2 layers of Inconel 625 on 4130 surface, this welder is qualified to weld repair if any on inconel deposit also , it means the welder qualified on 4130 with 625 can deposit 625 on 625
In my opinion the welder should be qualified on a similar mock up of the production (i.e. deposit a layer on a clad pipe/plate)
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Karthik
Sent: Monday, September 12, 2011 6:36 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:12428] Welder Qualification-ASME Sec IX- Clad materials
| Hi, In this case Inconel625 is a basematerial.Because you are going to weld on Inconel625 only not on AISI 4130. Thanks & Regards, (Karthik) Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282
Gents, I have confused on the above topic, could some one clarify the below situation 1) 21" ID ,Pipe (AISI 4130 ) cladded by INconel 625 with thickness of 1.5 mm with qualified Welding Procedure in other company. 2) We need to overlay the above item 1 , by inconel 625 on the existing Inconel 625 3) If i want to qualify the welder, i need to consider the Inconel 625 as base metal or AISI 4130 as base metal ? Pls share your exp, in as this kind of situation
|
No comments:
Post a Comment