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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. So what are the common reasons for contact fragment failure? Let me share with you below
The common failure conditions of contacting shrapnel are as follows:
Overtravel: For example, if you press the shrapnel by hand, the stroke is uncontrollable and it is likely to cause overtravel and damage the shrapnel.
Overpressure: For example, if you press the shrapnel by hand, 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 form bullet scratches.
Contact too large: The design of the contact is unreasonable, resulting in the contact not being used well in conjunction with the shrapnel, which affects the normal use of the shrapnel.
Uneven contact surface of shrapnel: The surrounding area where shrapnel is placed is uneven.
Poor contact: Reasonably install the shrapnel 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.
When using contact fragments, 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 matched with the shrapnel to prevent excessive crushing of the shrapnel.
Overpressure: All fragments have a preset positive pressure value, and excessive pressure can lead to fragment damage.
Overtravel: Most of the fragments are designed based on flat surfaces, and special models are designed according to customer requests. The contact point can be lower than the placement surface.
The above is the reason for the common failure of contact fragments, hoping to be helpful to everyone. If you need customized contact fragments, please feel free to contact us.