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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Nitride a barrel?
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<blockquote data-quote="Bob Wright" data-source="post: 3071413" data-attributes="member: 104363"><p>In the aerospace world, we used vacuum furnace nitride (nitrogen gas) on a variety of steels for wear purposes such as gear shaft journals and helical rotors. It was great for wear but due to its extremely high hardness on the surface there would be instances of damage during manufacturing or in service. We selectively treated high wear surfaces like bearing journal's or rotors using copper plate to mask. It would build on surfaces causing changes to dimensions so those required careful grinding to restore dimensions.</p><p>It's high hardness and higher brittleness was always a trade off over carburizing and toughness. I'm not surprised there are failures where sharp corners or fillet radius situations exist. Rifling would be a concern in my eyes. Any other sharp areas after nitriding are stress concentrations where cracks like to form and migrate.</p><p>There obviously is barrel applications here in this thread that work and some that don't. </p><p>YMMV.</p></blockquote><p></p>
[QUOTE="Bob Wright, post: 3071413, member: 104363"] In the aerospace world, we used vacuum furnace nitride (nitrogen gas) on a variety of steels for wear purposes such as gear shaft journals and helical rotors. It was great for wear but due to its extremely high hardness on the surface there would be instances of damage during manufacturing or in service. We selectively treated high wear surfaces like bearing journal's or rotors using copper plate to mask. It would build on surfaces causing changes to dimensions so those required careful grinding to restore dimensions. It's high hardness and higher brittleness was always a trade off over carburizing and toughness. I'm not surprised there are failures where sharp corners or fillet radius situations exist. Rifling would be a concern in my eyes. Any other sharp areas after nitriding are stress concentrations where cracks like to form and migrate. There obviously is barrel applications here in this thread that work and some that don't. YMMV. [/QUOTE]
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Nitride a barrel?
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