favalex
Plastic
- Joined
- Mar 16, 2017
- Location
- rainy side of Oregon
1144 "high strength" vs "ultra strength" for knurling wheel & knurling consultant?
Wondered if anyone could weigh in with real experience with 1144 "high strength" vs 1144 "ultra strength" (labels from MMC) I would also like to meet a knurling or cold forming expert in the Portland, OR area.
We make inhouse a wheel for a special knurling application. The shaft is part of the wheel. The material we're knurling is 6061-T4.
Did a few last year as a prototype from the 1144 "high strength" which they say is 100,000 yield, RC 25. The "ultra strength" is supposed to be 130,000 yield and RC30. We ran about 200 "knurls" with the wheel before it broke. It did wear somewhat along the way, changing the depth and sharpness of the knurl pattern.
I'd thought I was going to do the final one from O-1 and get it hardened, but it looks like we may be doing more prototyping to fine tune the pattern we need.
My carriage is made from 4140 w/o heat treat. Shaft is integral to the wheel The shaft diameter is pretty large compared to the knurling wheel diameter.
I think we're also at the point where we could benefit from talking with an knurl or cold forming tool designer as a consultant for a few hours, if there's someone in Portland OR area I could meet up with and show them the tooling we've got. I've got a lot of specific questions, but I'm sure there's a lot of stuff I don't know I don't know as well.
Thanks,
Alex
Wondered if anyone could weigh in with real experience with 1144 "high strength" vs 1144 "ultra strength" (labels from MMC) I would also like to meet a knurling or cold forming expert in the Portland, OR area.
We make inhouse a wheel for a special knurling application. The shaft is part of the wheel. The material we're knurling is 6061-T4.
Did a few last year as a prototype from the 1144 "high strength" which they say is 100,000 yield, RC 25. The "ultra strength" is supposed to be 130,000 yield and RC30. We ran about 200 "knurls" with the wheel before it broke. It did wear somewhat along the way, changing the depth and sharpness of the knurl pattern.
I'd thought I was going to do the final one from O-1 and get it hardened, but it looks like we may be doing more prototyping to fine tune the pattern we need.
My carriage is made from 4140 w/o heat treat. Shaft is integral to the wheel The shaft diameter is pretty large compared to the knurling wheel diameter.
I think we're also at the point where we could benefit from talking with an knurl or cold forming tool designer as a consultant for a few hours, if there's someone in Portland OR area I could meet up with and show them the tooling we've got. I've got a lot of specific questions, but I'm sure there's a lot of stuff I don't know I don't know as well.
Thanks,
Alex