Pressed joint of plated part on knurled surface
Pressed joint of plated part on knurled surface
(OP)
I have a 1/8" thick Zinc plated steel disc with a 1 1/2" hole in the middle. The hole is chamfered 2/3 of the way & has straight knurling (0.012" deep) formed on the chamfer.I need to insert a steel tube through the hole and press it down on the knurled surface to make secure joint between the tube and the disc with ability to withstand some torque.
I have not Zinc plated the tube as I am not sure if that will compromise the joint security. But it seems I need to provide surface protection on the tube. I would appreciate your inputs on this.
Thanks
I have not Zinc plated the tube as I am not sure if that will compromise the joint security. But it seems I need to provide surface protection on the tube. I would appreciate your inputs on this.
Thanks





RE: Pressed joint of plated part on knurled surface
RE: Pressed joint of plated part on knurled surface
The tube was a simplification to focus on the actual problem and not bring in unnecessary details. Actually the "tube" is the pawl carrier of a one-way clutch and the forming operation integrates a total of 10 parts into a one-way clutch. So I will have to plate the pawl-carrier separately. The concern arose because the clutch torque has to be carried by the joint.
Your confidence in the joint security was very helpful. I am thinking more analytically now. The plating thickness (10 microns) is only 3.3% of the knurl depth so the parent material should get formed OK.