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

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?

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