Contrary to popular belief, the strength effect of the weld height and fullness accepted in traditional welding methods (electrode, mig, mag, etc.) does not give us accurate information about the weld quality in brazing. Then, how do we evaluate the structural behavior and strength of brazing?
Structural Behavior and Strength:
The quality of the joint in brazing is directly related to the smoothness of the contacting surfaces and how effectively these surfaces are filled with filling material. The smoother and larger the contact surface area, the higher the brazing quality. However, it is important to fill at least 70 percent of this surface area with filling material.
Illusory Effect of Surface Fullness:
It should not be forgotten that a brazing fullness that looks perfect from the outside may actually be characterized by gaps or insufficient filling in the internal structure, and the solder wire may even remain on the surface and not go deeper. This means that surface fullness can be misleading for quality assessment.
Quality Control and Tests:
For true assessment of brazing quality, it is essential to look beyond surface fullness. Analyzes made by taking cross-sections provide detailed information about the internal structure. At the same time, tests such as the blast test and flow test provide critical information about the strength and sealing of the brazing.
Conclusion:
Although brazing has an important place among metal joining techniques, it can be misleading to evaluate its quality based on external surface fullness. For accurate evaluation, it is essential to use cross-sectional analyzes and different test methods.
Comments