Glass-metalsealed radio-frequency connector surface treatment method

Abstract

The invention relates to a glass-metalsealed radio-frequency connector surface treatment method, and discloses a method for preparing a solution for surface treatment of a connector insulation resistance and an application thereof. The method comprises the following steps: Aarranging an oxidizing alkaline solution and heating and boiling the solution in a stainless steel pot, and then immersing aradio-frequency connector with unsatisfactory insulation resistance in the solution; after the immersing, ultrasonically treating the connector with warm water and pure alcohol to effectively remove residual electroplating solution and metal ions in the pores and microcracks on the glass surface; and after the ultrasonic treatment with alcohol ends, drying the connector, and the tested insulationresistance of the radio-frequency connector at room temperature can be increased from 30-800 Mohmsmega to 10000 Momegaohms or more. The method solves a problem in the glass-metalsealed radio-frequencyconnector industry that the insulation resistance is greatly reduced after electroplating, thereby improving the reliability of theradio-frequency connector in the subsequent application.

Description

technical field [0001] The invention relates to a surface treatment method for improving the insulation resistance of a radio frequency connector, in particular to a surface treatment method for improving the insulation resistance of a glass-metal sealing connector, and in particular to a surface treatment method for a glass-metal sealing radio frequency connector method. Background technique [0002] RF connectors are usually mounted on cables or equipment, and are used as a separable component for electrical connection of the transmission line system. The requirements are extremely high, and even if there is a problem with only one contact, it may cause the collapse of the entire system. RF connectors are usually composed of three parts: shell, lead wire and insulator. With the development of economy, the comprehensive performance requirements of RF connectors are becoming more and more stringent. Traditional thermoplastic sealing materials can no longer meet the requirem...

AI Technical Summary

Problems solved by technology

Whether it is matching sealing or non-matching sealing, after the sealing is completed, the resistance insulation performance requirements of the RF connector must be met. Generally, the insulation resistance is required to be greater than 5000MΩ (DC: 500V). If the insulation resistance does not meet the minimum requirements for use, In the subsequent use of components, there will be hidden dangers of short circuit and excessive leakage current. Therefore, it is necessary to ensure that the insulation resistance of the RF connector is greater than 5000MΩ (DC: 500V) during use.

[0004] However, due to some natural defects in the sealing process of glass and metal, for example, the thermal expansion curves of glass and metal cannot be completely matched. After the sealing is completed, the glass will bear a certain amount of stress, and the severe one will cause some micro cracks on the glass surface. At the same time, the glass body is sintered at a certain temperature by combining a certain number of glass powder and a binder, and there will be a certain number of pores inside the glass body.

Before electroplating, these defects are not enough to affect the electrical insulation performance of the device. After the electroplating is completed, the insulation resistance of the RF connector will often be greatly reduced, usually to 30-800MΩ (DC: 500V), which cannot reach RF Performance requirements of connectors for insulation resistance

Wherein CN10142333A discloses a surface treatment method for improving the insulation resistance of glass-to-metal seals, the method mainly involves immersing the metal seals after electroplating in a solution with a mass concentration of 10% for 10 minutes, and then passing through alcohol ultrasonic, oven After steps such as drying, the insulation resistance of the seal can be increased to 500MΩ (DC: 500V), but this method takes a long time and has low efficiency; literature (Jiang Pengtao, Yan Baofeng, etc. Treatment measures for the reduction of insulation resistance after electroplating of stainless steel seals [J]. Electroplating and Finishing, 2011,33(12):21-24.) describes a treatment method for improving the insulation resistance of stainless steel sealing parts after electroplating. After the completion, use ammonia water and other solutions to neutralize the sealed device to improve the insulation resistance of the sealed device. Although the process is relatively simple, the insulation resistance after treatment still fails to meet the standard, and ammonia water is used for neutralization. It is highly volatile and has a strong pungent smell. It will cause great harm to operators and the environment during actual operation, and it is not easy to recycle.

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