Ceramic and conductor welding process

Abstract

The invention discloses a ceramic and conductor welding process. The ceramic and conductor welding process comprises the following steps of 1, putting ceramic, welding flux and a conductor into a welding clamp, and placing the welding clamp into a closed welding box body; 2, introducing inert gas into the welding box body, and maintaining the pressure inside the welding box body ranging from 0.15 MPa to 0.2 MPa; 3, starting a welding machine to weld the ceramic and the conductor under inert gas atmosphere, and meanwhile controlling the temperature of the welding box body to be linearly raised to 1200 DEG C, wherein the temperature raising time is 2.5-3 hours; 4, after the welding process is completed, preserving the temperature for 3.5-5.5 hours; and 5, after temperature preservation is completed, controlling the temperature inside the box body to be linearly lowered to the normal temperature, wherein the temperature lowering time is 2.5-3 hours. Compared with existing ceramic and conductor welding processes, the ceramic and conductor welding process is free of oxidation; welded components and the welding flux are heated uniformly in the welding process; it is guaranteed that the welding flux is infiltrated in a balanced and good manner; the temperature is lowered slowly, so that it is guaranteed that welding stress is slowly released; and welding quality is guaranteed, mild solidification is achieved, and thus welding quality is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a ceramic and conductor welding technology. Background technique [0002] At present, the welding process of ceramics and conductors generally adopts high-frequency inverter welding process or infrared reflow welding process. The procedures of the above two welding processes are as follows: [0003] 1. The process of high-frequency inverter welding process is as follows: put ceramics, solder, and conductors into the welding fixture and then weld them with a high-frequency inverter welding machine. After welding, place the welded components in cold water to cool; [0004] 2. The process of the infrared reflow soldering process is as follows: put ceramics, solder, and conductors into the fixture and then weld them through an infrared reflow soldering machine. After the welding is completed, place the welded components at room temperature to cool. [0005] The above two welding pr...

AI Technical Summary

Problems solved by technology

[0005] The above two welding processes are severely oxidized during the welding process, the heating process is too rapid, the welding components are heated unevenly, the solder infiltration is not good, the weld seam has more blisters, and the welding strength and welding sealing performance cannot meet the requirements.