Some time ago I took a punt and brought some 3' of 2 1/4" of steel bar stock. I was not sure what grade of steel, but nice, shiny and it cost less than the postage.
It is quite hard and generates a lot of heat when cutting, with long unbroken chips that tangle up around the cutter. That said it takes a good cut with carbide inserts and leaves a good surface finish with flood cooling and automatic feeds.
I can mill it, gently with carbide endmills and made a nice fly cutter, but burnt a lot of oil as I don't have flood or must cooling on the mill (yet).
I can cut with bandsaw ok and it drills ok with cobalt drills.
I'm pretty sure this is chrome moly and just seeking any advice/tips on machining. Speeds, feeds and tools. Advice on buying 'pigs in pokes' is less useful, but likely deserved!
It is quite hard and generates a lot of heat when cutting, with long unbroken chips that tangle up around the cutter. That said it takes a good cut with carbide inserts and leaves a good surface finish with flood cooling and automatic feeds.
I can mill it, gently with carbide endmills and made a nice fly cutter, but burnt a lot of oil as I don't have flood or must cooling on the mill (yet).
I can cut with bandsaw ok and it drills ok with cobalt drills.
I'm pretty sure this is chrome moly and just seeking any advice/tips on machining. Speeds, feeds and tools. Advice on buying 'pigs in pokes' is less useful, but likely deserved!
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