Product Bulletin - Controlled Atmosphere Brazing Furnace Systems
Preparing the products for brazing - Cleaning
In order for proper brazing to occur, the products must be prepared for brazing. The first step is to clean the products of all oils, dirt, etc. prior to the fluxing process. This can be accomplished by utilizing a Thermal Degreasing Oven or an Aqueous Washer.
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Thermal Degreasing Oven |
A Thermal Degreasing Oven will thermally remove the lubricating oils present on the heat exchanger from prior fabrication stages. The assembled and fixtured product will be placed on the oven conveyor for processing. The oven will typically operate at 250 300 degrees C to vaporize the oils. If light evaporative oils are used in the process, the vapors from the products are vaporized in the combustion chamber. If heavier lubricating oil are used an incinerator at the oven exhaust may be required. The products must then be cooled back to ambient temperature prior to the fluxing process.
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Aqueous Washer |
Aqueous Washer - an alternative approach to cleaning the products is to use a multi-stage washing unit. The washer will remove the oils, dirt and aluminum fines that could be present from the fabrication stages. The product is transported on a stainless steel belt through an automatic pre-wash, wash, rinse and blow-off cycles. As the product exits the final rinse stage, it enters an ambient blow-off section where a series of air knives strip the excess water off of the part prior to the fluxing process.
Next: Dry Off Oven
P. O. Box 908 180 Mercer Street Meadville, PA 16335-6908 USA
Phone (814)332-8400 - Fax (814)724-1407
info@secowarwick.com
©1995-2008 SECO/WARWICK Corporation All Rights Reserved.
The latest design, materials and equipment specifications should be obtained from the company before any reliance is placed on the enclosed since changes may occur due to product improvement.
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