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Re: [MW:12918] HAZ hardness exceed 200HB

By Materials & Welding
dear sir ,

for non pwht weld you can maintain your hardness by taking care of heat input as during welding, as heat input 

heat input = voltage * current / travel speed * 60

please be sure an accurate control to maintain hardness.as smaw & saw are high heat input process.

regards

dinesh

On Tue, Nov 8, 2011 at 10:59 AM, kavin202082@yahoo.com <kavin202082@yahoo.com> wrote:
Dear Experts,
What we can do if HAZ value exceeded >200HB after welding in
accordance to NACE RP0472

Non PWHT Welds on Vessel.
Material : SA 516 GR 70N
Thk :<38mm
PQR : hardness value <200HB as per actual welded

Regards,
Kavin

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