Method for testing mechanical parameters of soldering seam of soldering joint

Abstract

The invention discloses a method for testing mechanical parameters of a soldering seam of a soldering joint, and belongs to the technical field of soldering manufacturing technologies. The method comprises the following steps of (1) preparing a soldering bar (3); (2) preparing a homogenizing bar (4) and making the shape and size of the homogenizing bar (4) same as those of the soldering bar (3); (3) carrying out a tensile test on the soldering bar (3) and the homogenizing bar (4); (4) computing the elasticity modulus of a base metal of the homogenizing bar (4); and (5) computing the elasticity modulus of the soldering seam (2) and drawing an enhancement curve of the soldering seam (2). According to the method for testing the mechanical parameters of the soldering seam of the soldering joint, the mechanical properties of a soldering seam area of the soldering joint can be accurately determined and can be obtained through a conventional mechanical tensile test. Compared with a method for testing the mechanical properties of the soldering seam through an indentation method, the method has the advantages that the operability is high, the cost is relatively low, the mechanical properties of the soldering seam of the soldering joint at a high temperature can be determined, and the application is wider.

Description

technical field [0001] A method for testing mechanical parameters of brazing joints for brazing joints belongs to the technical field of brazing manufacturing processes. Background technique [0002] Brazing is a well-established welding technique. Compared with other welding methods, the workpiece is heated evenly during the brazing process, and the residual stress level inside the workpiece after welding is low. For workpieces of different types, special shapes and complex structures, brazing can ensure higher dimensional accuracy and better overall performance. , and brazing is usually carried out in a vacuum brazing furnace, which has high production efficiency and is easy to achieve automated production. Therefore, since the 1940s, brazing has gradually developed into a very promising welding technology, which has been rapidly developed and widely used in industrialized countries in the world. It is the most active and promising profession in recent years. one of the ...

AI Technical Summary

Problems solved by technology

Therefore, the characteristics of the solder in the strengthening stage cannot be obtained by melting the BNI2 solder as a standard sample

Some people tested the mechanical properties of BNI2 brazing joints by indentation method, indicating that there is an obvious plastic stage. However, due to the limitation of temperature, the indentation method cannot measure the mechanical properties at 600°C or higher temperature.

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