Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
17-4 PH Stainless cut rifled barrels
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Trickymissfit" data-source="post: 452768" data-attributes="member: 25383"><p>if memory is right Lothar Walther was the first person doing 17-PH4. He designed all his own tooling as he couldn't find anything that would cut barrels (what is different is closely guarded). For machining the rest; Valenite is your friend. I had it gun drilled before (usually .500" or bigger holes), and it seems to drill very well. (we used Pratt Whitney gun drills with custom designed gun drills). Needs a lot of coolant pressure in the bushing box (I mean A LOT), and the coolants will either kill you or be your friend. Also the feed rate is picky, and you must really push the drill or it will work harden on you.</p><p> </p><p> Armor plate is not all that hard, but is extremely tough. It will work harden when you cut it unless you really push the tool into the part. Tool pressure is way up there, and tends to make bearing manufacturers happy. This stuff also requires some heavy equipment (once again for the Jap stuff). I made a lot of money repairing equipment that cut armor plate thru the years.</p><p> </p><p> The material that interests me is ceramics. There have been a few ceramic gun barrels made in the past (military did a study about 15 years ago on M14 snipers rifles [shot very well by the way]). This would be a barrel that will not rust, has an extremely low wear factor, and appears to have a low node signature as well as a light weight.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 452768, member: 25383"] if memory is right Lothar Walther was the first person doing 17-PH4. He designed all his own tooling as he couldn't find anything that would cut barrels (what is different is closely guarded). For machining the rest; Valenite is your friend. I had it gun drilled before (usually .500" or bigger holes), and it seems to drill very well. (we used Pratt Whitney gun drills with custom designed gun drills). Needs a lot of coolant pressure in the bushing box (I mean A LOT), and the coolants will either kill you or be your friend. Also the feed rate is picky, and you must really push the drill or it will work harden on you. Armor plate is not all that hard, but is extremely tough. It will work harden when you cut it unless you really push the tool into the part. Tool pressure is way up there, and tends to make bearing manufacturers happy. This stuff also requires some heavy equipment (once again for the Jap stuff). I made a lot of money repairing equipment that cut armor plate thru the years. The material that interests me is ceramics. There have been a few ceramic gun barrels made in the past (military did a study about 15 years ago on M14 snipers rifles [shot very well by the way]). This would be a barrel that will not rust, has an extremely low wear factor, and appears to have a low node signature as well as a light weight. gary [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
17-4 PH Stainless cut rifled barrels
Top