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balance_spring [11.10.2021 17:01]
127.0.0.1 external edit
balance_spring [21.10.2021 09:46] (current)
gerdlothar
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 Although flat spirals have worse results than [[Breguet hairspring]]s (see below), because they - unlike those - don't move exactly concentric during expansion and contraction, they are the most common type of spiral in mechanical watches. Although flat spirals have worse results than [[Breguet hairspring]]s (see below), because they - unlike those - don't move exactly concentric during expansion and contraction, they are the most common type of spiral in mechanical watches.
 +
 +==== Breguet spiral ====
 +[[Abraham-Louis Breguet]] invented this type of balance spring (also called [[Breguet hairspring]]), which has a bent terminal curve. Especially [[Rolex]], unlike many other luxury watch manufacturers, is using this type of hairspring in its models. See also the new Rolex development of the [[Parachrom blue]] spring.
  
 ==== Auto-compensating spiral ==== ==== Auto-compensating spiral ====
 Balance springs made of spring steel have the disadvantage that they are changing their elasticity with temperature fluctuations. This also changes the speed of the clock. In the [[1930]] years, after intensive research, a new balance spring has been developed consisting of an alloy of different metals, which was able to compensate temperature changes. In [[1933]] these springs entered the watch market under the name "[[Nivarox]]". Because of its advantage over normal spring steel, they attained a rapid spread. Today Nivarox is also the name of the most famous manufacturer of flat spirals. Balance springs made of spring steel have the disadvantage that they are changing their elasticity with temperature fluctuations. This also changes the speed of the clock. In the [[1930]] years, after intensive research, a new balance spring has been developed consisting of an alloy of different metals, which was able to compensate temperature changes. In [[1933]] these springs entered the watch market under the name "[[Nivarox]]". Because of its advantage over normal spring steel, they attained a rapid spread. Today Nivarox is also the name of the most famous manufacturer of flat spirals.
  
-==== Breguet spiral ==== +==== Silicon hairspring ==== 
-[[Abraham-Louis Breguet]] invented this type of balance spring (also called [[Breguet hairspring]]), which has a bent terminal curveEspecially [[Rolex]]unlike many other luxury watch manufacturers, is using this type of hairspring in its modelsSee also the new Rolex development of the [[Parachrom blue]] spring.+In this newer development, the spiral is made of polycrystalline siliconCompared to conventional spirals, this type has the following advantages:  
 + 
 +  * Improved isochronism (regularity of oscillation). 
 +  * [[Anti-magnetic]] 
 +  * Temperature compensation due to the material properties. 
 +  * No thermal or mechanical degradation at the attachment points, unlike conventional spirals 
 +  * Insensitivity to small impacts and thus reduced rate deviations 
 +  * Reduced sensitivity to centrifugal and gravitational forces, as three times lighter than conventional spirals
  
 ===== See also ===== ===== See also =====
balance_spring.txt · Last modified: 21.10.2021 09:46 by gerdlothar

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