Skip to main content

Re: [MW:35161] Re: Reg.preheat process and Post heat process temprature for SMAW welding process

By Materials & Welding
pl ref ASME SEC 1 and Sec 9 also

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 Sun, Aug 11, 2024 at 8:47 AM DAB ENGINEERING <salesdabengineering@gmail.com> wrote:
Dear Sir,

Please share preheat process temprature and Post heat process temprature for SMAW welding process, Material: SA335 P22  Alloy steel seamless pipe 

Thanks & Regards,
Narasimma varman.M
Dy. Manager (Project and Planning)
DAB Engineering 
Trichy,Tamil Nadu.India.
Web site: www.dabengg.com 
+9196596 96841

On Sun, Aug 11, 2024, 8:35 AM DAB ENGINEERING <salesdabengineering@gmail.com> wrote:
Dear Sir,

Please share preheat process temprature and Post heat process temprature for SMAW welding process, Material: SA333 P22  Alloy steel seamless pipe 

Thanks & Regards,
Narasimma varman.M
Dy. Manager (Project and Planning)
DAB Engineering 
Trichy,Tamil Nadu.India.
Web site: www.dabengg.com 
+9196596 96841

On Sun, Aug 11, 2024, 8:20 AM Vishwas Keskar <vvkeskar123@gmail.com> wrote:
Noted
Pl write to Consumable mfg with detailed requirement of Impact , Hardness , PWHT  etc.
As I recall , you can speak to Volesalpene Bohler  company . 
They will suggest you the relevant consumable TYP B3  which will satisfy the requirements .

Thanks 
Vishwas -IWE 



Sent from my iPhone

On 10 Aug 2024, at 9:55 PM, Prathab P <prapoovins@gmail.com> wrote:


Sir,

PWHT
690°C for 96mins
Impact
-29°C

On Fri, 9 Aug 2024, 13:01 Vishwas Keskar, <vvkeskar123@gmail.com> wrote:
What are PWHT parameters ?
What is Impact temperature?
Sent from my iPhone

On 9 Aug 2024, at 11:42 AM, Prathab P <prapoovins@gmail.com> wrote:


Dear Experts,

PQR Test Coupon
Base Plate: A387 Gr22 CL2 (P. No. 5A, Gr.1)
Dimension: 500x350x40mm
Application: Heat Exchanger
Joint Design: Double Bevel

GTAW: Er90SB3
Size: 2.4mm

SMAW: E9018-B3
Size: 3.15 & 4.00mm

Preheating: 160֯C min
Interpass Temp: 200֯C max
DHT: 300֯C for 2hrs

The above mentioned test coupon impact and hardness testing failure. Impact value is getting lower and hardness value getting higher. 

The impact required average value is 55J and hardness max value is 225BHN but the impact actual value getting 22J and the hardness min actual value getting 208BHN.

What is the exert problem for this failure?

Please give us a deeper explanation for this failure. What is the solution?

--
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/CAFyvt4V7Gvpsaa2-01Tj63KBQW-FvqivoAD5JOA0gZj4uCD-VA%40mail.gmail.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/5B507EDD-0323-4A14-9F79-06731D12C8BB%40gmail.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/CAFyvt4Wcxoq70wvBsAgt13Z0UV9VMdY7pBweVjoPrkQ_pFuevw%40mail.gmail.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/855BC11E-8DDC-42B4-B5DD-4DDD3788208C%40gmail.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/CAGTOF4%3DYiuT3YAAnPt1SFjQMy86cmn8prbyZC92igZmaVQn4TQ%40mail.gmail.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/CAJzm4eP4Xcx7iNzbRrGA%2BCgbEronBJXQuTc%3DJ2vCA_qgy5C%3D8g%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

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

By Materials & Welding
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...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
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...
21 comments
Read more

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

By Materials & Welding
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...
Post a Comment
Read more