[MW:29329] Re: Weld Repair of ZG35CrMo (34CrMo4)

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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