PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?
PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?
(OP)
Dear All,
I am quite confused with the category for PTAW in ASME Section IX QW-257.1. I submitted the question to ASME to get an answer.
In the mean time, an ASME welding inspector insists that it is Spray Fuse because of Plasma Arc form as written in QW-216.3.
Does anyone have an answer for this?
I am quite confused with the category for PTAW in ASME Section IX QW-257.1. I submitted the question to ASME to get an answer.
In the mean time, an ASME welding inspector insists that it is Spray Fuse because of Plasma Arc form as written in QW-216.3.
Does anyone have an answer for this?





RE: PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?
bond with the substrate.
PQR requirements are described under:QW-216 HARD-FACING WELD METAL OVERLAY, Clause QW-216.3 to be precise.
As regarding the list of variables , look under table QW-257.1, Heading:Hard‐Facing Spray Fuse(HFSF) (QW-216).
Hope it would help you.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
RE: PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?
Thank you for your clarification. Then how is the fusing temperature and cooling rate measured/determined? Is is based on the melting temperature of the substrate and the fusing material?
RE: PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?
http://cdn.intechopen.com/pdfs/25058.pdf
RE: PTAW : Hard-Facing Overlay? or Hard-Facing Spray Fuse?