Atmospheric Brazing Utilizing Hydrogen
The brazing or heat treating is done in a continuous belt furnace with a Hydrogen atmosphere to keep the material clean (normally cleaner then as received) and free of scale. Hydrogen acts like a flux so none is needed when brazing. This furnace can handle large volume of smaller parts which makes it more economical for our customers. The furnace uses a variable speed drive for controlling the belt speed to ensure the material is at heat for a specific time. Also the material travels through four cooling chambers to cool it to room temperature before exiting the furnace.
Hydrogen Brazing creates a high integrity braze joint by utilizing a process that uses the cleaning (reducing) properties of high temperature and high purity hydrogen to drastically improve the wetting characteristics of your chosen braze alloy. Employing the high temperature hydrogen atmosphere offers reduced surface oxides which enables the braze alloy to wet more thoroughly.
- Hydrogen Brazing doesn’t require fluxes to protect braze joint surfaces from oxidation
- Oxides on parts which are heated to braze temperature tend to dissociate, and are subsequently flushed from the furnace with the positive flow of hydrogen; parts emerge from the furnace looking bright and clean.
- Joining metals used: copper, silver, nickel and gold-nickel alloys.