The U.S. department of SECO/WARWICK Group has been selected to relocate a very large controlled-atmosphere brazing (CAB) line for Cold Shot Chillers. The Houston, Texas-based company will use it to conduct in-house furnace brazing of heat exchangers. Built by SECO/WARWICK for another Houston-based OEM in 2005, the CAB line will be the first for Cold Shot Chillers. The Indexing CAB furnace has an overall load size of 48 inches wide x 100 inches long. SECO/WARWICK’s design allows the flexibility to produce a wide variety of sizes and types of heat exchangers on a daily basis. The Indexing solution allows a variety of parts to be brazed with no changes to the menus or furnace settings.

Corr-Paint CP4050 is a high-temperature, green-pigmented coating that provides corrosion and oxidation protection and color identification for induction heaters and heat exchangers used in demanding industrial applications at temperatures up to 1100°F (593°C).

The U.S. Department of Energy announced $36 million in awards for 18 projects as part of the High Intensity Thermal Exchange through Materials and Manufacturing Processes (HITEMMP) program, as well as the final OPEN+ Cohort, High Temperature Devices. These project teams seek to develop new approaches and technologies for the design and manufacture of high-temperature, high-pressure and highly compact heat exchangers and components.

SECO/WARWICK delivered and commissioned what it says is the first-ever vacuum-purging semi-continuous controlled-atmosphere brazing (CAB) furnace for a North American automotive aftermarket manufacturer. It is the company’s first furnace of any type and also its largest capital equipment investment. The furnace, equipped with vacuum purging in the loading and unloading chamber, allows for reduction of nitrogen consumption and cost. It also provides exceptional control of brazing atmosphere quality, which applies particularly to heat exchangers with joints brazed in a closed space. Vacuum purging allows for the removal of oxygen from these spaces before brazing, which cannot be achieved by traditional purging.

In the operation of vacuum furnaces, the quench-gas heat-exchanger fins can become clogged with various debris and dirt that is very difficult to completely clean with standard pressure washing and other conventional methods. The clogged heat exchanger greatly impedes quench-gas flow, resulting in reduced work cooling rates.

Because of its properties, duplex stainless steels are chosen for a variety of industrial applications (e.g., heat exchangers, boilers, etc.).

AVS designed and manufactured a 2,400-ton vacuum hot press that will be the largest of its kind in the U.S.