Machining Rc54-55 Steel
Machining Rc54-55 Steel
(OP)
Sorry for the double post, the title I revised to hopefully garner more answers.
I have an Aermet 100 maching question for the forum.
Due to a fatigue issue we are trying to avoid, we have made some parts from Aermet 100, and in the critical areas we have left .015" of stock to be machined off after heat treatment. This is so we can remove the de-carburised layer and obtain the best possible fatigue life in the critical areas.
We will be heattreating be Rc 53-54 (285'000psi)
In peoples experience what type of tool (I assume some grade of carbide) and associated speeds and feeds were used to machine Aermet in the heattreated condition? (I also assume that I'm not going to get very good tool life)
Thanks in advance for any advice
DC
I have an Aermet 100 maching question for the forum.
Due to a fatigue issue we are trying to avoid, we have made some parts from Aermet 100, and in the critical areas we have left .015" of stock to be machined off after heat treatment. This is so we can remove the de-carburised layer and obtain the best possible fatigue life in the critical areas.
We will be heattreating be Rc 53-54 (285'000psi)
In peoples experience what type of tool (I assume some grade of carbide) and associated speeds and feeds were used to machine Aermet in the heattreated condition? (I also assume that I'm not going to get very good tool life)
Thanks in advance for any advice
DC





RE: Machining Rc54-55 Steel
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RE: Machining Rc54-55 Steel
Thanks again dc
RE: Machining Rc54-55 Steel
Mikron makes a fairly decent machine designed specifically for tight-tolerance hardmilling of mold cavities. Check the specs on that machine and compare it to yours and see what you come up with. Without the rigid head and whatnot, the geometry of the part might require some creative dampening/clamping forces.
RE: Machining Rc54-55 Steel
RE: Machining Rc54-55 Steel
RE: Machining Rc54-55 Steel
RE: Machining Rc54-55 Steel
RE: Machining Rc54-55 Steel
when you talk about grinder burn, were you cutting without cutting fluid?
We use a synthetic soluble cutting fluid, I hope we could avoid the same issues if we flood the part adequately. We will also be using small endmills (maybe 1/4 dia max) so I don't think we would generate that much heat. (I hope)
We probably ought to cut down the speeds and feeds to generate less heat.
Thanks for the heads up!
DC
RE: Machining Rc54-55 Steel
RE: Machining Rc54-55 Steel