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The service life of contact fragments is generally relatively long, with some contact fragments having a maximum lifespan of up to 1 million times. Share with everyone: What are the general reasons for contact fragment failure?
The common failure situations of contact fragments are as follows:
Overtravel: For example, manually pressing the shrapnel may cause uncontrollable travel and potentially damage the shrapnel.
Overpressure: For example, when manually pressing the shrapnel, the pressure is uncontrollable, and the load may exceed the normal preset pressure value of the shrapnel, which may lead to overtravel and damage to the shrapnel.
Excessive crushing: Use sharp objects or nails to cause bullet scratches.
Contact too large: The design of the contact is unreasonable, resulting in the contact not being used well with the shrapnel, which affects the normal use of the shrapnel.
Unbalanced contact surface of shrapnel: The surrounding area where shrapnel is placed is unbalanced.
Poor contact: Install the shrapnel reasonably and pay attention to leaving space for the shrapnel.
Resistance value: The resistance value of the shrapnel is relatively fixed, such as less than 100 ohms for stainless steel, less than 1 ohm for nickel plating, and less than 0.1 ohms for gold plating.
I would like to remind everyone that bad usage habits can also affect the service life of metal shrapnel, which I believe everyone understands and understands. So what are the issues to pay attention to in the daily use and application of metal shrapnel?
When using contact shrapnel, pay attention to reasonable use and refer to the following methods:
Contact with shrapnel: The size of the contact must be used in conjunction with the shrapnel, or the size of the contact must be selected to avoid excessive crushing of the shrapnel.
Overpressure: All shrapnel have preset positive pressure values, if the pressure is too high, it can cause damage to the shrapnel.
Over travel: Most of the shrapnel is designed based on a flat surface, and special models are designed according to customer requirements. The contact point can be lower than the placement surface.
Is everyone aware of the common causes of failure in contact with shrapnel?