SECO/WARWICK is scheduled to deliver two controlled-atmosphere brazing (CAB) lines and one universal chamber furnace for aluminum brazing to a manufacturer of diesel engine components. The CAB lines will enable the company to win more contracts for brazing large battery coolers. One of the systems will incorporate a furnace equipped with a 90.5-inch-wide (2,300-mm-wide) conveyor belt for large-dimension battery coolers. It is the widest CAB line sold to date by SECO/WARWICK in China. The CAB lines consist of a radiation preheating chamber, radiation brazing furnace, cooling chamber with an air jacket, final cooling chamber and control system. The universal chamber furnace provides brazing for low-scale production. This type of furnace is designed to braze a variety of heat exchangers in horizontal or vertical positions.
In April 2020, Reed Miller interviewed Mike McConkey, a dedicated customer-service engineer for Surface Combustion. McConkey, an expert on controlled-atmosphere furnace operation, maintenance and safety, answered some frequently asked questions (FAQs) about the technology and offered some maintenance tips. This article is a condensed and edited version of that interview.
SECO/WARWICK delivered a controlled-atmosphere brazing (CAB) line to a British manufacturer of industrial heat exchangers. The system will allow the company to expand its range of sizes and dimensions of aluminum heat exchangers that can be brazed using CAB technology. The CAB line includes an Active Only semi-continuous furnace, which is comprised of a dryer, purging chamber, convection-heated brazing furnace, protective-atmosphere cooling chamber and a final cooling chamber. This will be complemented by an integrated system for loading, sequencing, stacking, transferring and unloading the work in progress.
In the global industrial heat-treating market, tens of thousands of products are sent through conveyorized ovens or furnaces each and every day. The thermal processing of these products – whether heat treating the core material or even curing a surface coating – is often critical to the quality or performance of the finished product. Whether aluminum brazing a radiator or curing paint on a car body, achieving the correct process times and temperatures is essential.