Gas Nitriding Heat Treatment for Machined Parts, Stampings, and Tooling by ThermTech
ThermTech is a pioneering figure in providing gas nitriding heat treatment for machined parts, stampings, and tooling. Gas nitriding, a heat treatment technique, introduces nitrogen into the surface layer of steel components using an ammonia gas atmosphere at elevated temperatures. It has emerged as an essential process, particularly for case-hardened machined components with wear surfaces.
Technical Benefits of Gas Nitriding:
- Superior Wear Resistance: The formation of iron nitrides enhances the wear resistance, prolonging the component’s lifespan.
- Optimized Fatigue Life: Essential for parts like gears under cyclical loads, the nitrided layer boosts fatigue strength.
- Minimal Distortion: With its operation at relatively lower temperatures compared to other techniques, gas nitriding minimizes thermal stresses and distortions, making it perfect for parts where tight tolerances are paramount.
- Improved Corrosion Resistance: The process enhances the corrosion resistance of certain steel grades.
- Controlled Case Depth: The nitriding time and temperature offer precise control over the desired case depth.
![Rectangle 86](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-86.png)
Gas Nitriding Capabilities by ThermTech:
ThermTech’s specialized gas nitriding treatments include:
- Gas Nitriding 4140 (pre-hardened)
- Gas Nitriding S-7 (pre-hardened)
- Gas Nitriding H-13 (pre-hardened)
- Gas Nitriding P-20
- Gas Nitriding Nitralloy 135M
Moreover, selective gas nitriding is achievable through nitride stop-off paints, allowing for targeted treatment areas.
![Rectangle 90](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-90.png)
Batch-Type Retort Furnaces:
ThermTech’s state-of-the-art approach utilizes batch-type retort furnaces, ensuring:
- Optimum process and lot control.
- AMS 2750 compliant furnaces.
- Capabilities include working dimensions of 33.5” DIA X 53” long or 30” DIA x 78” long.
![Rectangle 87](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-87.png)
Case Depth:
ThermTech is adaptable to client needs:
- Shallow case depth load (0.003”) runs every weeknight with a rapid 24-hour turnaround.
- Nitriding heat treatment for deeper case depths is a standard offering.
- However, they do not provide gas nitriding services for stainless steel.
![Rectangle 90](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-90.png)
Gas Nitriding Process at ThermTech:
- Previously hardened parts are heated in a controlled environment to a temperature below their prior tempering temperature.
- The temperature is maintained proportionate to the case depth requirement.
- Post nitride hardening, parts are hand-blasted using aluminum-oxide blast media to eliminate excess nitride stop-off paint.
- Growth due to gas nitriding process ranges from .0005-.001” due to the deposition of the white layer.
![Rectangle 89](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-89.png)
Gas nitriding, with its myriad of benefits, ensures machined parts, stampings, and tooling are equipped for durability, strength, and enhanced performance. With ThermTech’s expertise, you’re guaranteed a precise and efficient heat treatment process. For inquiries on deeper case depths and other specifics, reach out to ThermTech’s dedicated Customer Support.
![Rectangle 88 (1)](https://www.thermtech.net/wp-content/uploads/2023/08/Rectangle-88-1.png)