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Fabrication of a Recuperative Heat Exchanger for the Foundry Industry


Maumee Valley Fabricators completed this custom plate rolling and fabrication project for our customer in the foundry industry. This recuperative heat exchanger is 66" in diameter and 52' long. It is used to capture exhaust gas exiting the foundry and utilizes the residual heat in the gas to preheat the combustion air, providing the foundry with a fuel savings of up to 30%. The heat exchanger was fabricated from a combination of stainless steels. The outer shell was rolled to the desired diameter while the inner components were formed on our press brake.

After fabricating the individual components, both TIG and MIG welding were used to complete the entire heat exchanger assembly. Fabrication tolerances on this one of a kind heat exchanger were ±1/8". After welding, the heat exchanger was tested using radiographic examination to verify the quality of the welds. The lead time on a project of this scale is 14-20 weeks. For more information about this custom plate rolling and fabrication project, see the table below, or contact us directly.







Fabrication of a Recuperative Heat Exchanger - Project Highlights

Product Description

This Recuperative Heat Exchanger uses dirty gas from the process (cupola) top heat combustion air, saving up to 30% of purchased fuel (coke, oxygen)

Custom Metal Fabrication Capabilities Applied/Processes

Primary:
Rolling

Bending

Forming

Welding

Equipment Used to Manufacture Part

Plate Roll
Press Brake

MIG & TIG Welders

Overall Part Dimensions

Dia: 5 ft 6 in
Length: 52 ft

Material Used

304SS
310SS
321SS
253MA

In Process Testing/Inspection Performed

Radiographic Exam

Industry for Use

Foundry Industry

Delivery/Turnaround Time

14 to 20 Weeks

Delivery Location

Worldwide

Standards Met

Customer Specifications

Product Name

Recuperative Heat Exchanger



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