Brazing Filler Metal

I. The Function of Brazing Filler Metals:

Brazing filler metal is the 'soul material' of the brazing process. Just like the 'intelligent glue' between metals, it achieves a firm connection through the following three steps:

1.Melting and Filling: After being heated, the brazing filler metal melts into a liquid state and precisely flows into the joint gap (capillary action).

2.Wetting and Bonding: The liquid brazing filler metal spreads evenly on the metal surface, dissolves the surface layer of the base metal, and forms a metallurgical bond.

3.Solidification and Molding: After cooling, a high-strength joint is formed, which is not only electrically and thermally conductive but also corrosion-resistant and heat-resistant.

II. Types and Characteristics of Brazing Filler Metals:

According to the composition and application, brazing filler metals can be divided into four categories, which are suitable for different scene requirements:

III. How to Select Brazing Filler Metals?

IV. The Forms of Brazing Filler Metals: Flexibly Adapt to the Process:

-Filament - like: It is convenient for manual operation and suitable for local repair.

-Sheet - like/ring - like: It is pre - placed at the joint and suitable for automated production.

-Paste - like: It is mixed with a flux and can be precisely coated on complex structures.

-Powder - like: It is used for 3D printing and special composite brazing.

V. Summary in One Sentence:

Brazing filler metal is the 'bridge engineer' for metal connections. By choosing the right composition and form, it enables different metals to 'seamlessly shake hands' at high temperatures!