A387 Gr 22 Weld Procedure
A387 Gr 22 Weld Procedure
(OP)
What are the specific requirements while preparing a WPS for A387Gr22 material? What are the different consumables used?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
A387 Gr 22 Weld Procedure
|
RE: A387 Gr 22 Weld Procedure
You are asking some fundamental questions.
RE: A387 Gr 22 Weld Procedure
Now, regarding preheat and post weld heat treatment requirements these are usually spelled out in a code of construction document or by specific requirements of the designer that exceed code of construction requirements.
Welding consumables are normally specified by the designer or owner and selection depends on the material being joined to the above mentioned plate along with service conditions. Once can use welding consumables that are similar in chemical composition and strength properties to the base plate or use higher or lower strength consumables depending on what material is being joined to the Grade 22 plate.
RE: A387 Gr 22 Weld Procedure
RE: A387 Gr 22 Weld Procedure
*****
Welding procedure: GTAW
Filler Material: TGS-2CM
Amp: 60-120Amp
Pre-heat: More than 150deg C
Post heat: After keeping 10min at 300-350deg C, welded portion should be covered with glass cloth and cooled slowly
(Temperature should be controlled by thermal choke)
*****
RE: A387 Gr 22 Weld Procedure
Are the repairs cracking, or are the repairs holding and cracks occuring elsewhere on the part?
Finding the root cause may(likely will) suggest refinements that could be made to the repair procedure. Finish your RCA and provide your findings along with a photo of the failure.
Armed with this additional information, a solution to the problem may be obvious to you, or to someone else reading the forum.
David Benson
Benson's Mobile Welding & Fabrication
www.bensonmobilewelding.com
RE: A387 Gr 22 Weld Procedure