[meteorite-list] Iron cutting problems :))
Hello all I want to ask You how You cut nantan or any other iron meteorite ? Besouse yesterday I received my 5kg nantan and start to cut it on one end (small slice around 7x4cm) and I destroy 2 diamond blades 0.5mm. This was verry strange, becouse diamonds from one half of this blades was weared out and from another not. Now I have this blades with diamonds for example 4mm on one side and 5mm on another (in diameter). This can be any troilite inclusion or what ? Blade was cut this nantan up to 1.5cm inside and then stop cutting and start waste blade. Anyone know what happend ? This was my first iron cutting on my machine. Thanks for help -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.meteoryt.net [EMAIL PROTECTED] http://www.polandmet.com [EMAIL PROTECTED] http://www.vistapro.prv.pl +GSM (607) 535 195 [ Member of: Polish Meteoritical Society ] __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Iron cutting problems :))
Marcin, Just a few weeks ago, I posted a short summary message on this subject. It should be in archive on March 1. The best answer is to use a big metal-cutting band saw. That's probably the only good way to cut big irons. I have cut Campos on a lapidary saw, but it takes a very long time and the blade suffers. I use a homemade gravity feed system. I haven't cut enough to gauge blade wear. I've heard that A Meteorite magazine article by Allen Langheinrich discusses the details, but I haven't seen the article. I think it might have been in the August 97 issue (which is sold out). The classic advice is to leave it to the pros. Some would probably be happy to give you an estimate of the cost. --Jamie Stephens, IMCA 2828 PolandMET.com wrote: Hello all I want to ask You how You cut nantan or any other iron meteorite ? Besouse yesterday I received my 5kg nantan and start to cut it on one end (small slice around 7x4cm) and I destroy 2 diamond blades 0.5mm. This was verry strange, becouse diamonds from one half of this blades was weared out and from another not. Now I have this blades with diamonds for example 4mm on one side and 5mm on another (in diameter). This can be any troilite inclusion or what ? Blade was cut this nantan up to 1.5cm inside and then stop cutting and start waste blade. Anyone know what happend ? This was my first iron cutting on my machine. Thanks for help -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.meteoryt.net [EMAIL PROTECTED] http://www.polandmet.com [EMAIL PROTECTED] http://www.vistapro.prv.pl +GSM (607) 535 195 [ Member of: Polish Meteoritical Society ] __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Iron cutting problems :))
It sounds to me like the arbor you have the blade mounted to is not perfectly (90 degrees) perpendicular to the feed direction of your saw vice with the meteorite mounted in it. This skewed alignment will cause the type of wear you're talking about. Make sure you're using a coolant oil designed for diamonds saws...like Almag or the equivalent. You don't mention the diameter of your blade, but judging by the thickness you have mentioned, it sounds like you're using a 10 inch or smaller blade. I have used a 20 inch diamond saw with a 0.065 inch thick blade to slice lots of iron meteorites, including Chinga, which is very hard. Using a small diameter blade on a big meteorite produces a lot of heat which is one of the biggest enemies of diamond blades. Your blade is a bit on the thin side as well. A 0.5mm blade is only 0.020 inches. This allows the blade to flex during cutting especially if you put too much feed pressure or weight on it. Choose blade 0.050 (1.25mm) or thicker and don't over pressure the feed rate. Your blade RPMs can also be a source of problems. Run the blade too slow, and I guarantee it will follow a path that isn't straight. Campos are very inexpensive compared to diamond blades, you can afford to loose a little more material in the cutting process. Use a bigger, thicker blade. Best, John Gwilliam At 10:47 AM 3/22/03 +0100, PolandMET.com wrote: Hello all I want to ask You how You cut nantan or any other iron meteorite ? Besouse yesterday I received my 5kg nantan and start to cut it on one end (small slice around 7x4cm) and I destroy 2 diamond blades 0.5mm. This was verry strange, becouse diamonds from one half of this blades was weared out and from another not. Now I have this blades with diamonds for example 4mm on one side and 5mm on another (in diameter). This can be any troilite inclusion or what ? Blade was cut this nantan up to 1.5cm inside and then stop cutting and start waste blade. Anyone know what happend ? This was my first iron cutting on my machine. Thanks for help -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.meteoryt.net [EMAIL PROTECTED] http://www.polandmet.com [EMAIL PROTECTED] http://www.vistapro.prv.pl +GSM (607) 535 195 [ Member of: Polish Meteoritical Society ] __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
