The M1600-4.0 convex flange has been made concave; is there any way to fix this? Is it possible to perform surfacing welding first and then machine it into a convex shape?
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As the title states, material 16MnⅣ
No, the strength does not reach the required level after surfacing
Yes, the flange strength is no problem. It’s about exactly how to carry out the operations.
First, identify a problem and design something that allows for welding repairs on forgings； Secondly, for surfacing, it is necessary to consider non-destructive testing and heat treatment, as well as whether performance testing after simulating post-weld heat treatment is required ； Then, if the flange is already formed, what impact does welding a seal surface on it have on the flatness of the original flange end face (is this something that needs to be taken into account)?
The design conditions of the equipment need to be taken into consideration to determine whether surfacing can be performed here; if it is under high-pressure conditions, there may be potential risks
Illegal operation: Simply perform surfacing welding and that’s it (not made public). The proper approach is to follow the standard quality inspection procedures; whether the product is rejected or sent for further processing, that decision can only be made based on those procedures ； Alternatively, the design could consider adding a separate ring plate here, with a structure in which two concave surfaces hold the ring plate in place
The pressure isn’t high; it’s just the equipment being fatigued