How to check the appearance quality of products? Appearance defect detection of components

Date：2021-08-05 18:25:00Views：1594

As an upstream product of the electronic information industry chain, electronic components are the basis for the development of communication, computer and network, digital audio and video and other systems and terminal products. Whether the electronic components work reliably determines the normal operation of electronic equipment. The appearance defect detection of electronic components is a very key link. Because such products are generally small and have high requirements for quality, it is difficult to pass the manual mass detection. It is necessary to use the visual detection equipment of electronic components for automatic appearance defect detection. In response to the challenge of short supply of orders and higher and higher requirements of customers for product quality, the online detection equipment for appearance defects of electronic components replaces manual detection, so as to further improve the quality and added value of products, reduce production costs, and improve the market competitiveness of the company.

How to check the appearance quality of electronic components?When identifying and testing electronic components, the following operations shall be carried out:

1. Check that the model, specification, manufacturer and place of origin of components must meet the design requirements, and the outer packaging must be intact.

2. The electrode leads of electronic components shall be free from crimping and bending, and the coating shall be intact and smooth without oxidation and corrosion.

3. Check whether the appearance of electronic components must be intact, whether there are defects such as depression, scratch and crack on the surface, and whether the components with coating on the outside must be free of falling off and scratch.

4. The model and specification marks on electronic components shall be clear and complete, the color code position and color shall meet the standards, and the characters on the integrated circuit shall be carefully checked.

5. The size of components of mechanical structure shall be qualified, the thread shall be flexible and the rotation feel shall be appropriate.

6. Switch components operate flexibly and feel good; The connector shall have proper tightness and good contact.

The components in various electronic products have their own characteristics. During inspection, the inspection contents shall be determined according to the specific requirements of each component. Most of the inspection contents of appearance defects in electronic components are as follows:

Connector appearance inspection: measurement of pin diameter, pin distance and other dimensions.

Appearance inspection of capacitor: overall dimension of capacitor, pin diameter, etc.

Appearance inspection of inductor: measure the length, width and other dimensions, and detect surface defects.

Appearance inspection of resistor: scar, crack, scorch, size measurement, etc.

Pin pin appearance inspection: pin pin pin spacing, offset, shortage, etc.

Transformer appearance inspection: measure the pin diameter, pin distance, row distance and other dimensions, and detect the appearance defects such as desoldering, scorching and poor pins.

Wafer size and appearance defect detection: wafer size measurement, accuracy ±, wafer positive and negative coaxiality detection.

Conclusion: the quality of chip products is one of the manifestations of whether an enterprise has core competitiveness. Improving product quality is an important means to ensure that an enterprise occupies the market and can continue to operate. If an enterprise wants to be bigger and stronger, it must strive to improve product quality and service level on the basis of enhancing innovation ability. Common defects of electronic components include scratch, crack, lead skew, inconsistent size, poor printing, etc., which can be accurately detected by appearance inspection equipment. If you have any requirements related to chip appearance inspection and testing, please call Chuangxin testing, and we will serve you wholeheartedly!