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machining thin SS316 plate

tcncj

Cast Iron
Joined
Dec 15, 2016
I'm looking for same advice on the following:
customer comes in and needs stainless 316 plates machined.
Simple part. 180mm round disk and some bolt holes.
But...it's 4mm thick and one side with the holes (countersink) should be flat within 0,2mm,
They already made some out of 316 plate material and lasered the bolt holes. But the flatness is not good enough.

I was thinking about buying 5mm plate material.
Throw it on a vacuum plate and facemill the top.
But I have no idea if the vacuumplate can hold it good enough? No expierence with it.
And if the plate doesn't wrap anyway once I release it from the vacuumplate.
 
I'm looking for same advice on the following:
customer comes in and needs stainless 316 plates machined.
Simple part. 180mm round disk and some bolt holes.
But...it's 4mm thick and one side with the holes (countersink) should be flat within 0,2mm,
They already made some out of 316 plate material and lasered the bolt holes. But the flatness is not good enough.

I was thinking about buying 5mm plate material.
Throw it on a vacuum plate and facemill the top.
But I have no idea if the vacuumplate can hold it good enough? No expierence with it.
And if the plate doesn't wrap anyway once I release it from the vacuumplate.

My experience is that it will warp when you face one side. Then the trick is to pull the work down hard enough to face the other side to get it flat relative to the first side, if you are hoping to balance out the warpage.

Otherwise you can do multiple passes -- take a little off side 1, flip it and take a little off face 2, flip it back and take a little more of face 1, etc.

Regards.

Mike
 








 
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