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Preconditioning Hadfield steel by shotblasting
- Thread starter DDRSS10
- Start date
EdStainless
Materials
Standard shot blast does not deliver enough force/surface deformation.
There are special shop peen and hammering processes used.
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Plymouth Tube
There are special shop peen and hammering processes used.
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Plymouth Tube
I know UIT is being used to prevent weld cracking on mast arms for traffic signals
- Thread starter
- #5
I am still in the design phase of two relativly small parts both with a 2 1/2" machined bore. They are part of a concrete pumping system, I am looking to reduce the abrasive wear by preconditioning the surface to 500-600 bhn. I am concerned that the flowing concrete will not create enough "impact" to work harden the surface without the preconditioning. They will be consumable parts so cost is somewhat of a concern. Thanks for the info on UIT, looks pretty interesting.
- Thread starter
- #7
Arunmaro,
Hadn't thought of it. These parts are prototypes and even in production will be pretty low quantities. NiHard appears to be a casting alloy only, can it be purchased in bar stock and machined? Casting just a few will be really expensive.
I have worked with Hadfield in the past, I guess I was falling back on what I knew.
Hadn't thought of it. These parts are prototypes and even in production will be pretty low quantities. NiHard appears to be a casting alloy only, can it be purchased in bar stock and machined? Casting just a few will be really expensive.
I have worked with Hadfield in the past, I guess I was falling back on what I knew.
EdStainless
Materials
A Cr white iron or NiHard will have to be cast, they are nearly non-machinable they are so hard.
If the parts are a cylinder then casting shouldn't be a big deal.
You might look at explosive hardening if you need to do an ID surface. It works well.
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Plymouth Tube
If the parts are a cylinder then casting shouldn't be a big deal.
You might look at explosive hardening if you need to do an ID surface. It works well.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
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