I am designing a lid that pivots out of its frame on one end by means of two torsion springs around the pivot axis. The lid weighs 0.4 pounds and the center of mass is 7 inches away from the pivot axis. Thus, the moment about the axis is 7 x 0.4 = 2.8. Since there will be 2 torsion springs, I...
I have a material that is HRB 60. I know this material is too soft for my application. I have another material that I would like to use that is HRC 60. All the conversion charts I've seen do not list a conversion between B and C that starts as low as HRB 60 (they start at about HRB 100). How...
Hi,
I would like to use a low or mild carbon steel for a part I am designing. The part is a cylinder. A low force (~2lbf) ball spring glides across the surface of the cylinder. I also need to prevent it from rusting. So, I would like to put a zinc coating on for corrosion resistance as well...
I've read that the mating force calculated for an annular joint is typically much higher than what is actually required to assemble the parts (because the calculated value assumes a true axial assembly, while a manual assembler will always be off axis, making it easier to assemble the parts)...
Hi,
It has been far too long since my heat transfer class in college and I am struggling to do a simple (I think?) problem. Basically I have 3 materials sandwiched together:
1. A heated material (probably stainless at 450F)
2. An insulating material (maybe PTFE...still looking into it)
3. A...
