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Kilns and furnaces used for heat treating may be under pressure; that classifies them as autoclaves that require a greater volume of N2 gas. Kilns and furnaces may also be used as a melting device. All of these processes can utilize a nitrogen generator to combat their one enemy – oxygen. O2 discolors the product, and can dangerously weaken it. Any metal over 600° F will oxidize in the presence of O2. The purity for most metal applications is at most 99.99%; pressure 30-100 PSIG. Most are purge and fill nitrogen applications that can be accommodated with larger or multiple N2 surge tanks instead of pressure-boosting compressors.
The heat treating process involves both heat and pressure. Heat treating entails warming the metal to a designated degree and maintaining that hot temperature. The high heat changes the microstructure or physical properties of the metal. Once the desired effect is obtained, the metal is set to cool.
The purpose of heat treating is to make alloys, metals, or other materials suitable for different applications. Heat treating can change specific features and physical properties of a variety of metals. Incorporating a nitrogen generator into the process can improve product quality and reduce waste.
There are five ways to process heat treating:
Each process involves three essential stages:
During each step, oxygen (O2) must be eradicated. When O2 comes into contact with any metal heated over the 600-degree Fahrenheit mark, the metal oxidizes. In other words, when oxygen touches the metal during any of the five heat treating processes, the result is a tarnished and weakened finished product. Heat treating facilities utilize a nitrogen generator to prevent O2 from entering the system and eliminates the oxygen from the surrounding air.
Our superior nitrogen generators are reliable for all of your heat treating needs. Each one keeps the air oxygen-free, which is the quality assurance that your heat treating process needs to produce steel, iron, and other metal products that are strong and tarnish-free.
To learn more about the best nitrogen generator suited for your needs, contact us today!
Let us help you spec the perfect solution: on-time and on-demand. No matter what you’re looking for, we can design and build a nitrogen or oxygen generator to meet your needs.
On Site Gas Systems is a pioneer in oxygen and nitrogen generator technology. Many of our original generator systems are still going strong after 30 plus years. Our precision-engineered oxygen and nitrogen generation systems are used throughout the world in mission-critical applications, across dozens of industries.
On Site Gas Systems, Inc.
35 Budney Rd.
Budney Industrial Park
Newington, CT 06111
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