QUALITY HEAT TREATMENT CAPABILITIES
FOR CUSTOM CASTINGS

Oil City Iron Works currently offers 22 available heat treatment cycles integrated within our state-of-the-art foundry.

Since adding two new high-efficiency car-bottom furnaces, our heat treatment facility now provides the flexibility to operate 24/7. This allows us to streamline your custom castings through production while offering industry-leading cost efficiency and unbeatable turnaround times.

VERSATILE HEAT TREATMENT SOLUTIONS – FROM INDUCTION HARDENING TO ANNEALING

Oil City Iron Works currently offers 22 advanced heat treatment cycles, allowing us to customize and optimize our foundry solutions for the unique requirements of your products. We deliver a complete range of specialized heat treating options, including:

• Stress relief
• Induction hardening
• Annealing
• Normalizing

HEAT TREATING EQUIPMENT & TECHNOLOGY

Our foundry is equipped with multiple advanced heat treatment furnaces that are optimized for the custom castings we produce, both in size and in metallurgical capability.

Our cutting-edge heat treatment equipment includes:

• (1) 8′ x 16′ BOTTOM-CAR FURNACE
• (1) 8′ x 12′ BOTTOM-CAR FURNACE

THE BENEFITS OF HEAT TREATING YOUR CASTINGS

As the name suggests, heat treatment involves utilizing precision-tuned industrial heating and cooling cycles to enhance the metallurgical properties of your products. Through extreme and electronic-controlled heat cycling, our technicians can modify the properties of the actual metal within your products to allow for optimum manufacturability.

Annealing

Annealing is a three-stage heat treatment process. In the Recovery Stage, metal is precisely heated within the annealing furnace. Then, in the Recrystallization Stage, the temperature is carefully raised beyond the metal’s crystallization point, but held below its melting point. This creates new grains within the metal structure.

Finally, in the Grain Growth Stage, the metal is precisely cooled. Throughout the process, the metal is optimized for machinability through reduced hardness and increased ductility.

Induction Hardening

In the induction hardening process, a copper coil is fed with an extreme alternating current and placed near the metal part. During or after the induction heating process, the part is precisely quenched. The rapid induction heating/cooling process hardens the surface of the metal, substantially increasing its durability.

Normalizing & Stress Relief

In the normalizing heat treatment process, a metal is heated precisely beyond its transformational temperature range to create structural uniformity and strength. The stress relief heat treatment is similar, except that the metal is heated below its transformational temperature range to relieve stresses that have accumulated throughout the manufacturing process.