The paste for brazing carbide typically consists of a brazing alloy powder, flux, and a binder, which are mixed to form a paste. This paste is applied to the surfaces that need to be joined and then heated to create a strong bond. The brazing alloy powder, which is the key component, makes up 80%-90% of the paste's weight and acts as the filler metal that forms the braze joint. The flux component cleans any oxide on the surfaces of the weldments and enhances the wetting property and spread of the brazing alloy. The binder ensures that the alloy powder and brazing flux are mixed properly to form a paste of desired viscosity, which is easy to dispense at the designated braze area during the dispensing process.
Brazing paste is particularly suited for automatic application in large quantities and can be used with various brazing methods such as induction brazing, flame brazing, and reflow soldering, achieving high production efficiency. The use of brazing paste allows for precise application dosage and is adaptable to high-precision, mass automatic dispensing, and automatic brazing processes, making it ideal for industries requiring high-quality and precision in the brazing process, such as aerospace, medical device manufacturing, and gas and oil exploration.
When using brazing paste, it is important to heat more slowly to allow the paste binders to volatilize completely before the parts reach the high temperatures of the brazing cycle. This helps to prevent any real problems during the brazing process. Additionally, it is recommended to limit the amount of paste used to avoid introducing unnecessary binder into the furnace.
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