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Re: [MW:29569] REG : HARDFACING(ST-6) PRECAUTIONS OVER Cn3Mn CASTINGS

By Materials & Welding
\\For 38 to 45 HRC 
Stress reliving crack not acceptable 
It must be crack free //

Yes; crack not acceptable..

On Sun, May 5, 2019 at 1:38 PM Chintan Raval <chintan51@gmail.com> wrote:
For 38 to 45 HRC 
Stress reliving crack not acceptable 
It must be crack free 

On Sun, May 5, 2019, 11:35 AM Vinay Thattey <vinay.thattey@gmail.com> wrote:
Dear Venkat , minor transvers crack shouldnot be an issue . This is a generic with some hardfacing consumable.

On Wed 1 May, 2019, 12:15 Chintan, <chintan51@gmail.com> wrote:
Apply ss 316L as buffer layer thickness 2 mm
Then grind / machine the component to have uniform 2 mm buffer layer on whole assembly

Preheat 100 deg cel interpass 175 deg cel
Do not over heat base metal, temp shuold not cross 200 deg cel in any case
Apply pta powder
SLOW COOLING TO ROOM TEMPRATURE BY wraping in fire blanket

( if possible to replace pta by gmaw then use ERCocr-a wire for better result)

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