Skip to main content

Re: [MW:32024] RE: FCAW substitute for SMAW in offshore platforms

GMAW with Pulse is the best choice with 95Ar+5Co2

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE,  CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


On Sat, Mar 6, 2021 at 3:32 AM <pgoswami@rogers.com> wrote:

Hi

FCAW is one of the approved welding processes for offshore construction. Often restrictions are imposed by the end user/client. You need to go by what your project/client specification calls for. Here're some industry specific documents for your reference. GMAW is also a reliable process, however type of the process, i.e.  short circuit/ globular/spray arc decides the application and the effectiveness of this technique.

By and large of the processes are far more accomplished than what they were ,15-20 years ago.

 

Hope these attachments will provide the general insights on your query.

 

Regards.

 

 

 

Pradip Goswami.P.Eng, IWE.

Independent  & Consulting Welding & Metallurgical Specialist

Saudi Aramco Approved Designated Welding Engineer(DPWR)

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@rogers.com,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

 

From: EmaD FaRaHanI <emad.farahani@gmail.com>
Sent: March 5, 2021 12:01 PM
To: materials-welding@googlegroups.com
Subject: FCAW substitute for SMAW in offshore platforms

 

Dear All,

I want to replace SMAW in the fabrication of offshore platforms, top side section.

In this regard, FCAW is selected mainly for most of the welds, to increase the speed of fabrication.

May I know:

1- Is FCAW the right choice? how about GMAW?

2- In the case of FCAW, which electrode with a 3.2mm size is proper for all position welding in offshore platforms? mainly high strength steels

 

Regards,

E.F


Virus-free. www.avg.com

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/!%26!AAAAAAAAAAAuAAAAAAAAABVPzeizzeRJsiPziIE5jXQBAMO2jhD3dRHOtM0AqgC7tuYAAAAAAA4AABAAAACUA%2BTK4cT5SKO3larXFGO0AQAAAAA%3D%40rogers.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4eOC0Mw04raQR1ZAyrxYhYnC3TiKXb_r7%3D-9EM2zccy_pw%40mail.gmail.com.

Comments

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...

Materails FAQs

Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...

The Schaeffler and Delong diagrams for predicting ferrite levels in austenitic stainless steel welds

Introduction Ferrite is important in avoiding hot cracking in during cooling from welding of austenitic stainless steels. 'Constitution diagrams' are used to predict ferrite levels from the composition by comparing the effects of austenite and ferrite stabilising elements. The Schaeffler and Delong diagrams are the original methods of predicting the phase balances in austenitic stainless steel welds. Nickel and chromium equivalents A 'nickel equivalent' is calculated for the austenite stabilising elements and a 'chromium equivalent' ferrite stabilising elements. These are used as the axes for the diagrams, which show the compositional equivalent areas where the phases austenite, ferrite, martensite (and mixtures of these) should be present. Although intended to show the phase balance of weld fillers, these diagrams can also be used to illustrate the phase balance of the 'parent' material. There are different diagrams for dif...