Controlled Atmosphere Brazing (CAB), using a noncorrosive flux, is the preferred process for manufacturing aluminum heat exchangers such as radiators, oil coolers, condensers, charge air coolers, and evaporators in the automotive industry. A continuous, CAB Furnace is the most economical means for brazing components in larger volumes.
The time-temperature-atmosphere relationships provided by these furnaces are now capable of providing a brazing environment that was once only possible in a vacuum furnace. The general steps in the CAB process are thermal degreasing, fluxing, drying, brazing, and cooling. Due to the unique process benefits, the Controlled Atmosphere Brazing (CAB) process is rapidly finding new applications in aerospace, industrial, power plant, and HVACR manufacturing. Through innovative designs and simple routine maintenance, these furnaces are capable of producing products at lower capital and operating costs at high volumes.
Abbott Furnace offers customized CAB (Controlled Atmosphere Brazing) furnaces specializing in aluminum brazing of heat exchanger manufacturing.
TYPES OF CAB- Batch, Continuous, Indexing
Batch
- Single chamber / Single door– mostly in/out.
- All heating / cooling in single chamber.
- Long cycles, low production, high product mix.
Semi-Continuous (Indexing)
- Multiple chambers / multiple doors– mostly straight through.
- Faster Cycles, higher production quantity, high product mix.
Continuous
- Multiple chambers / multiple doors.
- Fastest Cycles, highest production, low product mix.
- Lowest manufacturing cost per part.
TRILLIUM®
- A metal matrix composite material of aluminum silicone alloy and potassium aluminum fluoride salt. The composite can then be converted into both single and double-side clad brazing sheets, enabling a brazing process without the need to add flux salt. Successfully used in Heat Exchangers such as radiators, heaters, evaporators, oil coolers, and CACs.
- Eliminate several steps of the brazing process such as degreasing, fluxing, drying and final cleaning to remove flux residue.
- The brazing takes place in a controlled high-pressure atmosphere furnace in nitrogen. TRILLIUM® can be used in an atmosphere with less nitrogen and more oxygen than traditional aluminum brazing, reducing both operating and capital equipment costs as well as environmental impact.
- Abbott Furnace offers customized CAB (Controlled Atmosphere Brazing) furnaces specializing in TRILLIUM® heat exchanger manufacturing.
