A low-temperature welding process method for quartz accelerometer terminal and connecting wire

Abstract

The invention discloses a low-temperature welding technique for binding posts and connecting wires in a quartz accelerometer. The technique includes the steps of 1, mounting a retaining plate on the binding-post upper surface of the quartz accelerometer; 2, pre-coating the binding posts of the quartz accelerometer with low-temperature welding flux, melting the low-temperature welding flux in a tin pan, inverting the quartz accelerometer to perpendicularly soak the binding posts in the tin pan, and allowing the low-temperature welding flux to automatically rise; 3, starting a soldering iron, and setting the temperature of the soldering iron to be 210 DEG C + / - 10 DEG C; 4, performing low-temperature welding at the temperature of 210 DEG C + / - 10 DEG C for 2s-3s; 5, cutting the retaining plates along the binding posts with side nippers, to obtain cuts, separating the retaining plates and the binding posts along the cuts, and extracting the retaining plate. The low-temperature welding technique for binding posts and connecting wires in the quartz accelerometer has the advantages that the quartz accelerometer is protected from damage by welding thermal shock; the application of the retaining plate ensures that the quartz accelerometer is airtight due to the housing being corroded by the flux.

Description

technical field [0001] The invention relates to a low-temperature welding process method, in particular to a low-temperature welding process method for a quartz accelerometer terminal and a connecting wire. Background technique [0002] In the past, the solder used for welding the terminals and connecting wires of the quartz accelerometer was Sn63-Pb37 / Sn60-Pb40, and its melting point was 183°C. Use an electric soldering iron to enamel the tin, and the tin enamel temperature is 300°C; the second step is manual soldering, that is, use a brush to apply rosin flux on the terminal post of the quartz accelerometer, set the temperature of the soldering iron to 280°C, and the soldering iron reaches the set temperature followed by welding. [0003] In the past method, the tinning temperature reached 300°C, and the temperature of the soldering iron reached 280°C during soldering, which exceeded the melting point of the solder joint material inside the quartz accelerometer. The high ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a low-temperature welding process method for the terminal post of the quartz accelerometer and the connecting wire, which solves the problem of high temperature and large thermal shock damage to the quartz accelerometer in the traditional welding method, and the corrosion of the quartz accelerometer shell by welding residual flux question

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