METAL THERMAL EXPANSION CHART
Please allow this to run-it's-course. Then I can say I tried my best. ALUMINUM / COPPER / STEEL (set screw). This is what I have been yelling about... Metal Temperature Range (oF) Thermal Expans...
Forum Discussion
When I was working on large steam turbines with General electric sections of the turbine had bolts that were about 3-5 inches in diameter.
The bolts had a hole in the center. A cal rod heater would be inserted and the bolt heated. Then the nut would be tightened until the bolt was stretched by an amount measured with a dial indicator.
Also remember trying to drill a 1/2 inch hole in a 4 inch thick copper bus bar. You can only drill about 1/8 inch at a time then pull the drill bit out and let the copper cool. If you tried to just drill all the way the copper would cool and grab the drill bit and then almost impossible to get the bit out.
The bolts had a hole in the center. A cal rod heater would be inserted and the bolt heated. Then the nut would be tightened until the bolt was stretched by an amount measured with a dial indicator.
Also remember trying to drill a 1/2 inch hole in a 4 inch thick copper bus bar. You can only drill about 1/8 inch at a time then pull the drill bit out and let the copper cool. If you tried to just drill all the way the copper would cool and grab the drill bit and then almost impossible to get the bit out.
