Re: [MW:17769] Hard Facing Overlay Test Required

Assuming that you are running a PQR, As per ASME Sec IX , QW-453 following test are required for procedure qualification of HFO:

(3) The hard-facing surface shall be examined by the liquid penetrant method and shall meet the acceptance standards in QW-195.2 or as specified

in the WPS. Surface conditioning prior to liquid penetrant examination is permitted.

(7) After surface conditioning to the minimum thickness specified in the WPS, a minimum of three hardness readings shall be made on each of

the specimens from the locations shown in QW-462.5(b) or QW-462.5(e). All readings shall meet the requirements of the WPS.

(8) The base metal shall be sectioned transversely to the direction of the hard-facing overlay. The two faces of the hard-facing exposed by sectioning

shall be polished and etched with a suitable etchant and shall be visually examined with 5 magnification for cracks in the base metal or the

heat-affected zone, lack of fusion, or other linear defects. The overlay and the base metal shall meet the requirements specified in the WPS.

All exposed faces shall be examined. See QW-462.5(b) for pipe and QW-462.5(e) for plate.

(9) When a chemical composition is specified in the WPS, chemical analysis specimens shall be removed at locations specified in QW-462.5(b)

or QW-462.5(e). The chemical analysis shall be performed in accordance with QW-462.5(a) and shall be within the range specified in the

WPS. This chemical analysis is not required when a chemical composition is not specified on the WPS.

You have covered all the tests as per QW-453.

Regards

Prem Nautiyal

From: Biplab Pal <biplab.mech@googlemail.com>
To: materials-welding <materials-welding@googlegroups.com>; Chandan Majumdar <majumdar123@yahoo.co.in>; chandan.majumdar <chandan.majumdar@sgs.com>
Sent: Thursday, May 23, 2013 2:03 AM
Subject: [MW:17743] Hard Facing Overlay Test Required

Dear Experts,

Please give me the guide for Hard facing Overlay:
We did a) Visual Examination, b) LPT, c) Hardness Test, d) Macro, e)
Weld Metal chemical analysis.
Is there any other mechanical or other test required for HFO like
Tensile or Bend test required?
Please guide me with ASME Sec IX 2010.

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Thanks & Regards
Biplab Pal
Welding Inspector
E-mail: biplab.mech@gmail.com

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