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According the characteristic of materials applied in different environment work mechanism switch shrapnel device is widely used in all kinds of contact, and use most is the most simple straight shape cantilever plate spring.
Contact resistance must be small, therefore made of bronze.
Measurement of switch shrapnel shift force or displacement.
If the fixed structure and load mode can guarantee working length is constant, the stiffness is constant, the scope of small deformation, when necessary, can also get nonlinear characteristics, such as the spring pressure on limit board or on the adjusting screw, change its working length.
The radius of the bending part.
Stress concentration of gaps or holes.
Shrapnel tablet shape and size tolerance.
Should according to the use of performance requirements put forward requirements of the switch shrapnel processing and heat treatment, hardness after heat treatment, can generally between 36 ~ 52 HRC.
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