Several methods for strengthening the elasticity of hardware springs

1. Setting treatment:
   is also known as “settling treatment”. Compress the heat-treated compression spring to the height or compression height under the working limit load (the length of the tension spring stretched to the working limit load, the torsion spring is twisted to the working limit torsion angle), one or more brief compressions (tension Stretching, torsion) is a process method with the main purpose of stabilizing the spring geometry.
   2. Heating setting treatment:
   is also called “heating and standing treatment”. Standing treatment under conditions higher than the working temperature of the spring.
   Three, strong pressure treatment:
   Compress the compression spring to the surface of the spring material to produce beneficial residual stress that is opposite to the working stress, so as to achieve a process method to improve the spring load capacity and stabilize the geometric size. (The other is heating and pressure treatment, this type of spring is mainly used in thermostats and overload protectors)
   Four, strong pull processing:
   A process that stretches the tension spring to the surface of the spring material to generate beneficial residual stress that is opposite to the working stress, so as to improve the spring load capacity and stabilize its geometric dimensions.