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Subject: 
Re: Strengthening Gears
Newsgroups: 
lugnet.technic
Date: 
Tue, 5 Mar 2002 05:13:55 GMT
Viewed: 
2686 times
  
In lugnet.technic, Thomas Avery writes:
I recently received an email from someone about strengthening gears. This
person claims that by boiling the gears and then cooling them with cold
water, their strength will increase.

Has anyone tried this? What were your results?

TJ

This sounds like the basic technique for "tempering".  You've probably heard
of tempered glass or tempered metal.  From what I remember, this just
changes the way the strength is handled in the material.  A normal material
bends more instead of breaking.  A tempered material won't bend as much,
which gives the impression of it being stronger; however, it is more likely
to shatter than a normal material.  Of course, if anyone is a materials
expert (I'm not) then feel free to set me straight here.  In any case,
google finds many hits on "tempered glass", but none on "tempered plastic",
and there's probably a reason for that ;-).

+Z+



Message has 1 Reply:
  Re: Strengthening Gears
 
Plastic doesn't get stronger under heat-treatment. This type of heat treatment is used to control the crystallization of metals, and long-chain polymers like plastic just don't behave like that. If you need stronger gears, double them. It is the (...) (22 years ago, 5-Mar-02, to lugnet.technic)

Message is in Reply To:
  Strengthening Gears
 
I recently received an email from someone about strengthening gears. This person claims that by boiling the gears and then cooling them with cold water, their strength will increase. Has anyone tried this? What were your results? TJ (22 years ago, 5-Mar-02, to lugnet.technic, lugnet.robotics)

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