- #1
christian everett
- 16
- 2
I have 1" aluminum rod and I want to dril a hole in a steel structure for the bolt.
If I have a 1" drill and take .001" inches off of it at the machine shop, so that it is now 0.998 inches, there will have to be about a 200°C difference in temperature between the two articles (aluminum having a coefficeint of expansion of 17 x 10-6 and steel 11 x 10-6) which shouldn´t be a problem.
There will be some mechanical retention (a bolt passing though both structures), but I was wondering if I am able to slide them together before they cool off and/or heat up how secure would this retention be withiut the mechanical retention (say it´s just one inch of length where they meet).
If I have a 1" drill and take .001" inches off of it at the machine shop, so that it is now 0.998 inches, there will have to be about a 200°C difference in temperature between the two articles (aluminum having a coefficeint of expansion of 17 x 10-6 and steel 11 x 10-6) which shouldn´t be a problem.
There will be some mechanical retention (a bolt passing though both structures), but I was wondering if I am able to slide them together before they cool off and/or heat up how secure would this retention be withiut the mechanical retention (say it´s just one inch of length where they meet).