where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
1181 views
Technical Discussions
Dhaval Jariwala
Dhaval Jariwala
03:31 Nov-08-2012
ASME BPVC Sec IX_Group_Number

Hello All,
Can anybody say me how the Group Number is designed in ASME SEC IX in Table QW-422. I need information what is the logic behind grouping the different material in different group.

 
 Reply 
 
Ananthan
Consultant,
RAA Tech Solutions, India, Joined Jun 2000, 36

Ananthan

Consultant,
RAA Tech Solutions,
India,
Joined Jun 2000
36
06:33 Nov-08-2012
Re: ASME BPVC Sec IX_Group_Number
In Reply to Dhaval Jariwala at 03:31 Nov-08-2012 (Opening).

ASME Sec IX QW 422 relates P no Group number based on the welding and mechanical properties. Materials with similar properties are made into single groups.

 
 Reply 
 
mahmoud refaat
NDT Inspector,
Egypt, Joined Aug 2012, 16

mahmoud refaat

NDT Inspector,
Egypt,
Joined Aug 2012
16
19:56 Nov-13-2012
Re: ASME BPVC Sec IX_Group_Number
In Reply to Dhaval Jariwala at 03:31 Nov-08-2012 (Opening).

based on my knowledge for any material the properties determine by 3 factors :
1- chemical composition (especially carbon content for ferrous material)
2- heat treatment
3- those two factors give you specific alloy with specific mechanical properties
so ASME IX categorized the material based on behavior during welding and according to specific range for both chemical and mechanical ( divide them in to P number)
but i think the origin behind group number for the same p number referring to the heat-treatment during the alloy manufacture like annealing and quenching that why we refer to group number just in case the PQR and it's mechanical test include impact test and as you know impact can alternate for the same alloy if heat treatment alters during manufacture like hardness properties so in this case supplementary variable will be essential variable during our wps qualification

 
 Reply 
 

Product Spotlight

Silverwing RMS PA - Phased-array corrosion mapping

Eddyfi Technologies integrated two market leading solutions, Silverwing’s RMS and M2M’s instru
...
ments to provide a high-speed, remote access ultrasonic phased-array inspection system with live total focusing method (TFM).
>

Research and Applications Development For NDT

The Research and Applications Development (RAD) group is a newly formed team within Acuren dedicat
...
ed to tackling challenging inspection problems. Our focus is the development of novel, field deployable, advanced inspection techniques for use in cases where standard NDT methods are ineffective. We don't wait for new innovations, we engineer them. From concept to commissioning.
>

Navic - Steerable Modular Automated Scanner

The Navic is a modular, motorized, steerable scanner designed to carry multiple attachments used
...
in various scanning and inspection applications. The Navic is capable of weld scanning (girth welds and long seam welds), automated corrosion mapping, and tank scanning.
>

Surf-X® Array Probe

Introducing the Surf-X family of flexible Eddy Current Array (ECA) probes. Featuring unique multiple
...
coil sets and proprietary X-PROBE technology, Surf-X array probes can quickly and accurately handle a range of inspection applications, from inspecting corrosion or cracking in pipes, pressure vessels, or tanks, to assessing and sizing cracks in raised welds and friction stir welds.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window