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Drilling 6063: sudden problems, Speedio
- Thread starter gustafson
- Start date
- Replies 24
- Views 1,309
FredC
Titanium
- Joined
- Oct 29, 2010
- Location
- Dewees Texas
The last time I ran some 1018 it had inclusion in the material that stopped the spindle on a A42 Traub screw machine. I have not run 1018 since. If a customer does not to change to 12L14 he can take his work elsewhere.
First thing I thought of when all else is the same. Cut some of that aluminum up and look for chunks of carbide. Others mentioned too soft, harder to diagnose if it is just in spots.
First thing I thought of when all else is the same. Cut some of that aluminum up and look for chunks of carbide. Others mentioned too soft, harder to diagnose if it is just in spots.
gkoenig
Titanium
- Joined
- Mar 31, 2013
- Location
- Portland, OR
Material...
But I would also switch out the collet/holder at this point.
But I would also switch out the collet/holder at this point.
I agree. The coolant nozzles suck on the brother machines too. Too far away from the tool. When dealing with gummy materials a perfect blast of coolant is critical for drilling/slotting.
Orange Vise
Titanium
- Joined
- Feb 10, 2012
- Location
- California
Supplier probably blew the heat treatment. Aluminum has a very short quench delay during solution annealing (time from oven to quench bath, usually just a few seconds), so it's easy to screw up. Same reason why thick sectioned aluminum bars tend to be more problematic, because the cooling takes longer.
A lot of extrusions are made in China too so there's that.
How much $ do you have invested in the extrusions? A full battery of tensile tests from a lab will run about $100-150. You can also get a few pieces of material heat treated to T6 and pay a lot minimum, which will probably also be around $100-150. Then you can try drilling the properly heat treated material. Not sure what your relationship is like with your material supplier. If we ran into these issues, we would likely get the material swapped and the testing costs comped. As a bonus, the tests would satisfy my curiosity.
A lot of extrusions are made in China too so there's that.
How much $ do you have invested in the extrusions? A full battery of tensile tests from a lab will run about $100-150. You can also get a few pieces of material heat treated to T6 and pay a lot minimum, which will probably also be around $100-150. Then you can try drilling the properly heat treated material. Not sure what your relationship is like with your material supplier. If we ran into these issues, we would likely get the material swapped and the testing costs comped. As a bonus, the tests would satisfy my curiosity.
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