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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Carbon fiber wrapped barrels
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<blockquote data-quote="Darryle" data-source="post: 2309936" data-attributes="member: 109917"><p>The process will get to the point that you you may never see full steel barrels.</p><p></p><p>The issue I see is the dissimilar thermal expansion of the steel and graphite.</p><p></p><p>25+ yrs in aviation, these issues still arise from time to time even today. Not being able to see the processes of the various manufacturers, I am curious to see how many steps from the preparation of the base substrate to the final cure and finish of the barrel each manufacturer has. </p><p></p><p>We are seeing the aviation industry use innovative processing now that have cure temperatures in the 750* range. In some cases that is twice the temperature of previous processes of just a few years ago.</p><p></p><p>Seeing these wound, fine narrow filament fiber "tape" barrels versus the hand laid up resin saturated woven graphite cloth(45* and 90*) barrels (HCA) is interesting to me. What testing is done on the graphite material to determine total resin content and what is the surface tact(amount at the surface) amount. I would like to know if ultrasonic testing is done on every barrel, by the batch or if it is even done at all. I would like to see an independent deflection and harmonics study along with the thermal transfer and thermal ramp and cool rate during live fire.</p><p></p><p>I and curiously following along to see where this technology is headed.</p></blockquote><p></p>
[QUOTE="Darryle, post: 2309936, member: 109917"] The process will get to the point that you you may never see full steel barrels. The issue I see is the dissimilar thermal expansion of the steel and graphite. 25+ yrs in aviation, these issues still arise from time to time even today. Not being able to see the processes of the various manufacturers, I am curious to see how many steps from the preparation of the base substrate to the final cure and finish of the barrel each manufacturer has. We are seeing the aviation industry use innovative processing now that have cure temperatures in the 750* range. In some cases that is twice the temperature of previous processes of just a few years ago. Seeing these wound, fine narrow filament fiber "tape" barrels versus the hand laid up resin saturated woven graphite cloth(45* and 90*) barrels (HCA) is interesting to me. What testing is done on the graphite material to determine total resin content and what is the surface tact(amount at the surface) amount. I would like to know if ultrasonic testing is done on every barrel, by the batch or if it is even done at all. I would like to see an independent deflection and harmonics study along with the thermal transfer and thermal ramp and cool rate during live fire. I and curiously following along to see where this technology is headed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Carbon fiber wrapped barrels
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