Kiwi Airgunners Forum : Case hardening www.kiwiairgunners.co.nz/ This is an XML content feed of; Kiwi Airgunners Forum : Pauly's Technical Area : Case hardening Copyright (c) 2006-2012 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 19:19:38 +0000 Sat, 10 Oct 2020 11:10:52 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 10.14 360 www.kiwiairgunners.co.nz/RSS_post_feed.asp?TID=512 Kiwi Airgunners Forum www.kiwiairgunners.co.nz/forum_images/logo.jpg www.kiwiairgunners.co.nz/ Case hardening : dvlnme wrote:where do you want... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3155#3155 Author: Pauly5
Subject: 512
Posted: 10 Oct 2020 at 11:10am

Originally posted by dvlnme dvlnme wrote:

where do you want me to send this case hardening powder to Paul,lost your address mate.
 cheers mike


I will PM you, and will get your address for the scope too.

Cheers,
Paul]]> Sat, 10 Oct 2020 11:10:52 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3155#3155 Case hardening : where do you want me to send this... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3153#3153 Author: dvlnme
Subject: 512
Posted: 10 Oct 2020 at 12:43am

where do you want me to send this case hardening powder to Paul,lost your address mate.
 cheers mike
]]> Sat, 10 Oct 2020 00:43:55 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3153#3153 Case hardening : up to you bout scope mate,last... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3147#3147 Author: dvlnme
Subject: 512
Posted: 09 Oct 2020 at 2:18am

up to you bout scope mate,last one gave some to was wingman,you first since then who needed some,not something usually give out as quite expensive,not worth the expense for most to buy just to do odd smal job,but worth weight in gold when you need it eh,as so easy to use and allways works well,i never use anything but mild steel to make anything these days i need harden as case hardening far better than using tool steel as part dosnt go brittle like tool steel if over heat treated and not anealed correctly,never happens with case hardening,case hardening is a skin leaving center still soft until recently all guns were made hi quality mild steel then selectivly case hardened where needed,beauty of case hardening is its possible to just harden only part of the part where its needed leaving rest unhardened,all older lee enfields and mauser winchesters were mild steel and case hardened where needed,the no4 enfields make in us during war were made tool steels and many developed cracks under use,when older ones never did,nungas method works well if you want harden whole part,oldest method of case harden used 50/50 mis of leather and cow horn shavings and done in forge like nungas method this was how they hardened frizens for flintlocks and other gun parts in early days,just bit history and useless facts of interst.
 cheers mike
]]> Fri, 09 Oct 2020 02:18:16 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3147#3147 Case hardening : think last one gave some to was... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3145#3145 Author: dvlnme
Subject: 512
Posted: 09 Oct 2020 at 1:53am

think last one gave some to was wingman up to you bout scope mate,best easy hardening compound there is,better pm you address again had clean out and cant seem find address.
 cheers mike
]]> Fri, 09 Oct 2020 01:53:43 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3145#3145 Case hardening : Great info guys, I'm keen... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3142#3142 Author: Pauly5
Subject: 512
Posted: 08 Oct 2020 at 2:34am

Great info guys, I'm keen to try it.

Mike, maybe I can swap that pistol scope for some hardening powder?
]]> Thu, 08 Oct 2020 02:34:51 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3142#3142 Case hardening : if you got a gas torch that can... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3141#3141 Author: dvlnme
Subject: 512
Posted: 08 Oct 2020 at 1:50am

if you got a gas torch that can heat small bitz steel to cherry red i can send you some case hardening powder mate,beauty this commercal hardening powder is you dont have to harden the whole piece of steel but can harden just specific areas of a part,or do the whole piece,dead easy to use just heat part or area to bright cherry red dip in powder then reheat then let cool ,can do this several times depending on how deep you want to harden the part,one treatment be enuf for your purposes,be deep and hard enuf you wont scratch it with diamond file.
 cheers mike
]]> Thu, 08 Oct 2020 01:50:36 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3141#3141 Case hardening : It will only be a thin surface... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3137#3137 Author: Stuart
Subject: 512
Posted: 07 Oct 2020 at 4:07pm

It will only be a thin surface hardness so don’t grind through this we only used to allow 5 thousand of an inch for grinding.]]> Wed, 07 Oct 2020 16:07:14 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3137#3137 Case hardening : if the parts are mild steel you... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3135#3135 Author: nunga
Subject: 512
Posted: 07 Oct 2020 at 4:00pm

if the parts are mild steel you need to add carbon to them to harden them properly. you can use carbonates from the fire or bbq to do this. crush them then heat your part till it gets white in colour then dip it in the carbon for a few seconds then quench it in water, you must then heat it up to around 200 celsius for about an hour and let it cool naturally
]]> Wed, 07 Oct 2020 16:00:35 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3135#3135 Case hardening : Thanks for reply. These guns aren't... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3130#3130 Author: Pauly5
Subject: 512
Posted: 07 Oct 2020 at 2:47pm

Thanks for reply. These guns aren't super quality, mass produced, so to my untrained eye it feels and looks like a mild steel]]> Wed, 07 Oct 2020 14:47:45 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3130#3130 Case hardening : Or piece of tool steel and harden... www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3128#3128 Author: Stuart
Subject: 512
Posted: 07 Oct 2020 at 1:50pm

Or piece of tool steel and harden and temp, I have angle plates, parallels etc made from mild steel and case hardened then ground to size and still like new after 40 years of use. This is just a surface hardness ofthe steel

Tool steel heat to red heat quench in oil keeping the part moving to cool and that will be hard but you may need to temper part so not brittle by tempering, emery paper so you can see steel then heat to whatever hardness specification you need by the colour, light straw etc then quench again.    but the more you heat the less hardness you will have.
Best to find out what original part is made of first.
]]> Wed, 07 Oct 2020 13:50:39 +0000 www.kiwiairgunners.co.nz/forum_posts.asp?TID=512&PID=3128#3128