What Should I Do If The Relay Contacts Are Loose And Cracked?

Dec. 29, 2018

A considerable part of the components of the relay are riveted and fitted, and the main problem is that the riveting is loose or the bonding strength is poor. This kind of fault will make the relay parameters unstable, the parameters change greatly under high and low temperature, and the mechanical vibration and impact resistance are poor. The main cause of this problem is the poor condition of the riveting parts, the improper placement of the parts, the unqualified quality of the work tools or the inaccurate installation. Therefore, 48v Relay Supplier reminds you to carefully check whether the tool and the riveted parts meet the requirements before the welding.

The contact is the electrical contact part of the relay to complete the switching load. The contacts of some products are press-fitted by riveting. The main disadvantages are loose contact, cracked contact or excessive positional deviation. This will affect the contact reliability of the relay. The loosening of the erasing point occurs, which is caused by an unreasonable size of the mating portion of the reed and the contact or an improper adjustment of the riveting pressure by the operator. Contact cracking is caused by excessive material hardness or too much pressure. For different materials, the contacts are made of different materials. Some of the higher hardness contact materials should be annealed for contact manufacturing, riveting or spot welding. The manufacturing of the contacts should be careful. Since the materials have tolerances, the length of each cut should be determined after trial and error. Contact manufacturing should not result in flash, padding and underfill. The contact riveting is caused by the operator not correcting the touch and misaligning the upper and lower touches. Contact damage, contamination, oil contamination and iron filings on uncleaned tools. Regardless of the ills, it will affect the reliability of the relay. Therefore, in the process of contact manufacturing, riveting or electric welding, it is necessary to comply with the self-test regulations for the intermediate inspection and final inspection of the first piece to improve the assembly quality.

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