Its a very good suggestion from Mr.Sridhar to use urea grade electoredes and filler wire for low ferrite content. M/s.Sandvik and M/s.Esab is manufacturing the same. Availability may be an issue.
On Tue, Aug 27, 2013 at 1:52 PM, c sridhar <sridhar305@yahoo.com> wrote:
You can use AWS/SFA E 316L-15 ( IS E19.12.2.LB20), an extra low carbon 17/14/2.5 Mo type SS basic coatedelectrode with good corrosion resistance qualities.This electrode is exceptionally good for welding AISI 316,316L, 317L & 318 type material and provides a maximumof 2.0 % ferrite . Such electrodes are designed for urea reactors and similar chemical equipment used for temperatureservices.Typical chemistry:C - 0.03 max., Mn 1.0 to 2.50, Si- 0.20 to 0.45, Cr – 17.0 to 18.50, Ni – 13.0 to 14.0,Mo- 2.0 to 3.0, S/P 0.02 max. Ferrite content – 2.00 max.UTS: 520-630 Mpa. El % – 35 to 45 & impact of 60 to 100 joules at 27±20 C.On same basis, E 316-L – 16 (LF) type special Electrodes are also available with ferrite less than 0.50%.C - 0.03 max., Mn 5.0 to 7.0, Si- 0.30 to 0.80, Cr – 17.0 to 20.00, Ni – 13.0 to 16.0,Mo- 2.0 to 3.0, S/P 0.02 max. Ferrite content – 2.00 max.UTS: 520-630 Mpa. El %– 35 to 45 and impact of 30 to 75 joules at -1960 C.Corrosion rate as per ASTM A262 practice C is 0.50 grams per m2/hr. Max. – 22 mpy.All above electrodes are made to order and may be available with leading electrode manufactureslike Adore, Esab, D & H, GE and others in our country.Similarly you can scout for equivalent TIG filler wires also after stipulating your requirement frommanufactures from abroad or any of their local agencies in India.Sridhar.---------------------------------------------------------------------------------------------------------------------------------------------------------------From: HAREESH K V <hareesh13h@gmail.com>
To: materials-welding <materials-welding@googlegroups.com>
Sent: Tuesday, 27 August 2013 10:05 AM
Subject: Re: [MW:18523] Ferrite Content Check on root or final weldAs per my opinion,1. check the ferrite number of the base metal.2.Select a consumable batch having a ferrite number such that the average ferrite number of the base metal and the consumable is with in the range what required for you. Normally after welding an average ferrite number will be in the weld.3. Do a sample weld and check the ferrite number.4. For the same manufacturer and brand name there will be slight variations in the ferrite number. So check the batch certificate and select a batch having a low ferrite number. Also do a small weld pad and check whether the ferrite number you are getting (Using your ferrite meter) is same as in batch certificate.5. Alsokeep the heat input to the minimum possible and keep the cooling rate to the minimum possible.On Sun, Aug 25, 2013 at 8:10 PM, Prakash Hegde <pb.hegde@yahoo.com> wrote:Dear Mr Ankiti) The weld ment Ferrite to be checked after final Weld However the depth at which the ferrite to be checked depends upon spec requirementii) For to get Ferrite between 2-5 is very low hence generaly Nil Ferrite consumables are to be used (also Basic coated electrodes are being used) where you require to take extra precaution during welding to avoid Hot Crack(Shrinkage Crack)RegardsHegde P.B.From: Ankit PAtel <ankit.patel@orientalindia.net>ence
To: materials-welding@googlegroups.com
Sent: Saturday, 24 August 2013 6:00 PM
Subject: [MW:18506] Ferrite Content Check on root or final weld-- To post to this group, send email to materials-welding@googlegroups.comTo unsubscribe from this group, send email to mailto:materials-welding%2Bunsubscribe@googlegroups.comFor 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 mailto:materials-welding%2Bunsubscribe@googlegroups.com.For more options, visit https://groups.google.com/groups/opt_out.Dear Exerts,Kindly suggest on following issueWe have a job on which ferrite content test is essential. we are welding with root run by GTAW & sub sequent layer by SMAW. Please confirm whether it is essential to check the ferrite content of the root or final weld.(top of the weld.)Base Material-SA 240 TP 316LFiller Wire/Electrode:- ER-316L & E-316LAlso our requirement is 2FN to 5FN kindly suggest any filler wire/Electrode manufacturer.Regards
Engineer QualityOriental Manufacturers Private Limited
A: P.C.C. Notified Area, Ranoli Station Road,Ranoli -391 350 Baroda Gujarat IndiaT: +91.265.223 1663/2232936-- To post to this group, send email to materials-welding@googlegroups.comTo unsubscribe from this group, send email to mailto:materials-welding%2Bunsubscribe@googlegroups.comFor 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 mailto:materials-welding%2Bunsubscribe@googlegroups.com.For more options, visit https://groups.google.com/groups/opt_out.------------------------
Hareesh K V
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Hareesh K V
+91-9447625012
Hareesh K V
+91-9447625012
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