Re: [MW:14203] Welding C45 (1045)

Hi you got a Carbon content of .45....use an Austernetic stainless
steel consumable because it gives more ductility and and less strength
and it will relieve internal stress.but your HAZ zone will still be
brittle so you have to do a PWHT(stress relief)temperatures for stress
relief range between 550-750 degrees Celsius ..Note 1 hour for every
25mm of thickness so you do the maths and you ll be fine...this is
according to procedure

Salman
Gem Consulting


Mon, May 7, 2012 at 7:10 PM, prem nautiyal <prem_nautiyal26@yahoo.com> wrote:
> Hi
>
> Increase the preheat to 150 degrees Celcius min. Interpass temp 250 degrees
> celcius max.
> Use SMAW E7018-1 electrode.
>
> I have successfully welded C45 material with E7018-1.
>
> Regards
>
> Prem Nautiyal
>
> From: LeONarD P <metpick@gmail.com>
>
> To: Materials & Welding <materials-welding@googlegroups.com>
> Sent: Saturday, May 5, 2012 10:56 AM
>
> Subject: [MW:14187] Welding C45 (1045)
>
> Dear All expert
>
>         Welding C45 (1045) steel (Pivot Boss) to S275JR (main
> structure)
>
> 1045 Pivot Boss is casting part.
> S275JR is steel plate
>
> For a project I need to weld a C45 (1045 steel, 0.45% carbon Thick 100
> mm) on a S275JR steel ( Thichness 30 mm.)
>
> Joint design & condition weld:  T-butt joint, double bevel, CJP. Bevel
> at S275JR steel.
>                                                   preheat 110 C
> minimum,. interpass temp 220 C max.
>                                                   by FCAW process.
> A5.20 / E71T-1C
>
>
>       After weld, the problem is crack appear along on surface casting
> part (1045 steel)
>
> How to solve this problem.
>
> Thank you very much.
> leonardd..
>
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