Electric contact lubrication problems:

※, the contact is easy to generate arc at the moment of turning on and off;

※ For sliding contacts, metal-to-metal friction requires good lubricating grease;

※, poor low temperature;

※, strict lubrication requirements for long life, the grease on the contact volatilizes too fast under the action of the arc, after a period of time, the grease dries out and loses its lubrication and protection;

※, incompatible with plastic;……

Solution:

※ Add antioxidant and metal deactivator to reduce the oxidation reaction of contact metal;

※, the pressure drop of the contact should not be too big, the grease film should not be too thick;

※, the use of metal and plastic grease with good compatibility;......

Simulation bench experiment

basic introduction:

※ The test bench system can carry out durability test on common switches such as ignition switch, car door lock cylinder, combination switch, rocker switch, key switch, rearview mirror switch, etc. Need a specially designed stand.

※ The test stand is divided into three stations, and the three stations can test one set of switch, one set of ignition switch and three sets of rocker switches at the same time. All three stations can simulate the load of the switch and monitor its voltage drop at any time. The change in voltage drop can reflect the wear of the contact point of the switch point.