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Terminal measures to prevent poor contact

by:Fortuna     2021-02-10
In order to ensure the quality and reliability of the terminal, prevent the happening of the described earlier deadly fault, proposal according to the product technical conditions, formulate the corresponding filter technical requirements, carry out the following reliability test targeted to prevent failure. 1, conduction testing in 2012, general terminals manufacturers product acceptance test without the project, and users are usually requires conduction testing after installed. It is recommended that manufacturers for some key models of the product should be increased by 100% point conduction test. 2, transient breaking test some terminal blocks is used in dynamic vibration environment. Experiment proved that only static contact resistance testing qualified, there is no guarantee that under dynamic environment using the contact reliability. Because, often qualified connector contact resistance in the vibration, impact, such as simulation test is a momentary power outages, so for some high reliability requirements of terminals, best can 100% contact dynamic vibration test to assess its reliability. 3, puckering separation force detection puckering separation force refers to the contact plug and state changed from static to movement of the separating force, pin and socket is to evaluate the contact. Experiments show that: single-hole separation force is too small, in the vibration and impact load that may cause signal transient breaking. With single-hole separation force measurement method to check the contact reliability more effective than measuring contact resistance. Examination revealed a single separation force out-of-tolerance jack, measuring contact resistance often is qualified. For this purpose, the factory in addition to developing a new generation of flexible plugged into close contact with stable and reliable contact element, the should not be used to model focused on automatic insertion force tester more neat, deal with finished goods for 100% of the check point by point puckering separation force, prevent interruptions caused by individual jack relaxation signals. Without reliable terminals, there is no reliable systems engineering. Dongguan precision electronic technology co. , LTD. Strict controls on terminal blocks of raw materials, materials used are imported or domestic high-quality materials. Mainly in copper, stainless steel materials are purchased from famous suppliers, effectively avoid the terminals in the raw material part material cause of failure. Failure and reliability is corresponding to the interconnected another two aspects of contradiction. Through the terminal reliability screening found various failure modes and failure mechanism, can lead to a lot of lessons and eliminate all kinds of hidden dangers, to improve the design, process, inspection and provide scientific evidence for use, it is also revise and formulate the important basis of terminal technology conditions. Looking for measures to prevent failure, transformed from failure to reliable, is the ultimate goal of precision electronic science and technology of failure analysis. In this paper, starting from the original, if reprint please indicate the source and the author
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