Surface treatment method for improving plug-in performance of electric initiating explosive device

Abstract

The invention provides a surface treatment method for improving the plug-in performance of an electric initiating explosive device. According to the surface treatment method for improving the plug-inperformance of the electric initiating explosive device, an ultrasonic finishing surface treatment process is adopted, due to the fact that the effect of ultrasonic waves is introduced, the temperature of a strong acid solution is low, moreover, the treatment time is short, the over-corrosion of a substrate is not prone to be caused, moreover, the effects of removing an oxidized thin film on the surface of a contact pin of a sealing-in part and improving the surface smoothness of a base material can eb achieved, moreover, the functions of removing burrs and the like are achieved, and tiny defects existing on the surface of the contact pin can be leveled; then deionized water is used for repeated cleaning so that residues on the surface of the contact pin can be thoroughly removed on the premise of not introducing impurity ions, then it is ensured that the uniform nucleation of metal Au + on the surface of an electrode is promoted in the follow-up electroplating process, the crystal grain growth speed is reduced, then the binding force between a coating and the substrate can be improved, moreover, the surface of the obtained electroplated gold-plated layer is bright and compact, andthe plug-in performance of a connector is guaranteed.

Description

technical field [0001] The invention relates to the field of electroplating of sealing parts for electro-technical products, in particular to the technical field of surface treatment in which electro-technical products for aerospace have special requirements on plugging performance. Background technique [0002] Glass-metal seals (referred to as seals) refer to a connecting body formed by sintering special glass powder, pre-oxidized metal shells and pins at 600-1000°C under the protection of nitrogen atmosphere. Sealing parts are widely used in weapons, aerospace, aviation, ships, oil blasting and other fields, among which electrical explosives are one of its important application fields. [0003] As a key component of the electrical explosive device, the sealing piece plays the role of support and connection. The quality of the electroplating coating on the plug-in terminal (especially the contact pin) directly affects the safety and reliability of pyrotechnics. Therefore...

AI Technical Summary

Problems solved by technology

[0007] b. This method has poor versatility. The traditional electroplating method is mainly suitable for the surface treatment of ordinary electro-explosive products, and is not suitable for the surface treatment of electro-explosive devices with high requirements on the plug-in life.

[0008] c. The pass rate is low, which is not conducive to the mass production of sealing parts

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