ROTARY Broaching a Hex in 17-4 H900 Condition Material (45-47 Hrc)
We recently had an Aerospace manufacturer in Washington State, contact us about the problems they were having trying to wobble broach a 5/16 Hex in 17-4 H900 condition material. The current broaches they were using yielded 0-1 parts per broach. They had tried several different brands of wobble broach tools, but ended up with the same poor results, each time. Their process for making this screw was going very well, except for the last operation, the broaching. They were using the correct feeds and speeds, and their wobble holder was in great working condition. We simply supplied them with a 5/16 Hex Wobble Broach, made from our in house, proprietary heat treated, Rayco #7 HSS material. They are now running these screws getting on average 160+ parts per broach. They were planning on having to get this hex form done with a secondary EDM process, until our Rayco broaches allowed them to make the entire screw, in one process. There is NO Equivalent.