Surface Defects on Dish End

[Amit Vishwakarma]

Dear Experts

 

During visual inspection of dish-end (MOC SA 240 Gr304 & Thickness 8mm) I found that heavy dent marks on knuckle area and this may be during forming process. Kindly suggest whether it is allowed as per code to repair by welding on damaged area for such surface defects.

Regards

Amit

[claire roberston]

A dent in material formation is not a welding defect. Can you include a photo. A weld repair is exactly that! A repair to the welded area. Otherwise it is a fabrication repair. Please clarify

[J Prinsen]

In par 10 of ASTM/ASME (S)A403 (Stainless Steel Wrought products) complete procedure and requirements are explained on this issue, no space for discussion

Regards

Jurgen Prinsen IWE/MSc
Weld-Tech vof
Welding Engineering and Consultancy

----- Oorspronkelijk bericht -----
Van: "claire roberston" <jamis...@hotmail.co.uk>
Aan: "Materials & Welding" <material...@googlegroups.com>
Verzonden: Zondag 23 april 2017 15:44:21
Onderwerp: [MW:26465] Surface Defects on Dish End

A dent in material formation is not a welding defect. Can you include a photo. A weld repair is exactly that! A repair to the welded area. Otherwise it is a fabrication repair. Please clarify

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[anthony chundal]

you can repair the same, provided you have a repair procedure,& a suitable Welding procedure. what is the minimum thickness required after forming,whether you are achieving the same before repair.

On Sun, Apr 23, 2017 at 5:44 PM, claire roberston <jamis...@hotmail.co.uk> wrote:

A dent in material formation is not a welding defect. Can you include a photo. A weld repair is exactly that! A repair to the welded area. Otherwise it is a fabrication repair. Please clarify

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[Prakash Hegde]

Hi!

Basicaly before forming of DE you require to consider the reduction in wall thk in knuckle portion and accordigly you req to select higher thk. Plate for DE As this forming is carried by point pressing and followed by leveling or say dressing the surface by pressing to  level dents (to maintain min req wall thk )Dents are not acceptable and not to be repaired by welding for thk correction

Therefore one has to be careful during DE forming with due consideration to Die its surface n shape used and pressure applied

Regards

Hegde P.B

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[Amit Vishwakarma]

On Tuesday, April 25, 2017 at 6:55:40 PM UTC+5:30, Prakash Hegde wrote:

Hi!

Basicaly before forming of DE you require to consider the reduction in wall thk in knuckle portion and accordigly you req to select higher thk. Plate for DE As this forming is carried by point pressing and followed by leveling or say dressing the surface by pressing to  level dents (to maintain min req wall thk )Dents are not acceptable and not to be repaired by welding for thk correction

Therefore one has to be careful during DE forming with due consideration to Die its surface n shape used and pressure applied

Regards

Hegde P.B

Sent from Yahoo Mail on Androidevel

On Mon, 24 Apr 2017 at 17:14, anthony chundal

<anthony...@gmail.com> wrote:

you can repair the same, provided you have a repair procedure,& a suitable Welding procedure. what is the minimum thickness required after forming,whether you are achieving the same before repair.

On Sun, Apr 23, 2017 at 5:44 PM, claire roberston <jamis...@hotmail.co.uk> wrote:

A dent in material formation is not a welding defect. Can you include a photo. A weld repair is exactly that! A repair to the welded area. Otherwise it is a fabrication repair. Please clarify

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