Re: Re: [MW:29346] Re: Weld Repair of ZG35CrMo (34CrMo4)

Use original qualified WPS requirement and make sure that you gouged without any evident of crack, make sure for PT after cooling down completing every pass.

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Regards,

MOHAMED MUNEEB MAHABOOB

 

From: Kannayeram Gnanapandithan

Date: 2019-03-22 08:18

To: materials-welding

Subject: Re: [MW:29342] Re: Weld Repair of ZG35CrMo (34CrMo4)

U can't get 9018-B2 instead u will get 8018-B2

On Fri, 22 Mar 2019 3:58 am sandeep kumar, <sandeepdhiman63@gmail.com> wrote:

See my comments.

On Thursday, March 21, 2019 at 8:36:30 AM UTC+3, Josnit wrote:

Dear Experts,

We have observed a crack on a roller of material ZG35CrMo (34CrMo4). We want to do weld repair. Could you please advise the below;

1. Consumable to be used: Use E9018-B2

2. Preheat temperature: 150-200 Deg C & maintained during the welding.

3. Inter pass temperature: 250 Deg C max

4. Any post heating: No specific post heating required.

5. Final heat treatment temperature : U didnt specified the thickness & depth of the weld groove you will prepare for the repair. You can consider a temp of 725 Deg C for 2 hrs holding minimum. use a heating & cooling rate of 150 Deg C/ Hr and controlled heating-cooling above 350 Deg C.

6. Any special precautions?: Follow above instructions, it will be no issue.

Thanks & regards

Sandeep Kumar 

MSc. WE, IWE, Research fellow.

Sent from my iPhone

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