How to use X-ray to detect fuse defects?

Date：2022-04-01 16:54:39 Views：1004

Fuse is a common electronic component. Fuse is also called current fuse. Iec127 standard defines it as "fuse link". It mainly plays the role of overload protection. It is a very key component in electronic products, which plays a protective role in circuit safety, so as to effectively ensure that when the product is powered on, it will not be broken down by excessive current and damage the electronic products.

After the fuse is correctly placed in the circuit, the fuse will fuse itself and cut off the current when the current abnormally rises to a certain height and heat, so as to protect the safe operation of the circuit. It greatly improves the reliability of hard disk drives or other circuits and protects them from catastrophic and shutdown failures. When a fuse is implanted in the circuit, once the circuit encounters abnormal current conduction, it will lead to the rapid increase of the temperature of each circuit of the equipment. As the most vulnerable part, it will often be damaged first due to the high temperature. If the circuit has not been disconnected in this case, it is likely to cause a fire due to the combustion of electronic products.

The importance of fuse can not be underestimated. It is not only directly related to the use of products, but also likely to have a great impact on the personal safety of users. Therefore, the quality level control of fuse can not tolerate any carelessness. When installing the fuse, it should be noted that if the wire is not tightened tightly, the contact resistance between the fuse and the terminal will increase. When powered on, the ice in the contact part of the fuse and the terminal will heat up, and it is easy to fuse after a long time. X-ray detection is also required in the fuse production process to find out whether there are defects in the fuse in the shell through the real-time image, so as to judge the ng product.

The X-ray detection method is used to detect the defects of the fuse. After penetrating the fuse, the X-ray detection equipment will generate images, and the relevant technicians will analyze and judge the quality of the fuse according to these images. In this way, the quality of the fuse has been greatly improved. X-ray can penetrate small and precise fuses, and the software is set to automatically sort defective products, which greatly improves the detection efficiency.