开云体育

Carbide wheel

Leo Cormier #59127 开云体育 "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece. As far as "pull little pieces of carbide away" goes, that is exactly what grinding is. I spent 12 years in vary large machine shops (in shipyards) and we always used the green wheel to rough the brazed carbide tools and the wet diamond wheel to put a polish on just the carbide part of the tool. In a pinch, you can get by without the diamond. Leo
Ray Kornele #59128 Most carbide tools are high-temp BRAZED! I, too worked in a machine shop, and ordered many of the tools, including M-5 for some special jobs that could not be cooled with coolant. I, also, ordered, and, installed a vortex cooler. Keeps things cool by producing super cold air. KrazyKyngeKorny (Krazy, not stupid) toggle quoted message Show quoted text On Tue, Oct 11, 2011 at 7:41 AM, Leo Cormier <leocor@...> wrote: ** "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece.
jbrookes40 All Messages By This Member #59129 hilsch vortex cooler. holy smokes! Was it noisy? John B toggle quoted message Show quoted text On Oct 11, 2011, at 12:24 PM, Ray Kornele wrote: Most carbide tools are high-temp BRAZED! I, too worked in a machine shop, and ordered many of the tools, including M-5 for some special jobs that could not be cooled with coolant. I, also, ordered, and, installed a vortex cooler. Keeps things cool by producing super cold air. KrazyKyngeKorny (Krazy, not stupid) On Tue, Oct 11, 2011 at 7:41 AM, Leo Cormier <leocor@...> wrote: ** "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece. ------------------------------------ Yahoo! Groups Links
Ray Kornele #59130 Mildly so. Not deafening, by a long shot. Just a moderate sound of air escaping. What surprised me was, in 1980 something, it only cost about $200. But, we had to install a refrigerated air dryer to supply air. Withouit the drier, the cooler kept shooting ice bullets, from frozen condensate from the air. We had some machining to do that had to be cooled, but, couldn't take liquid coolant. I don't think it was a hilsch. I assume that is a brand name? KrazyKyngeKorny (Krazy, not stupid) toggle quoted message Show quoted text On Tue, Oct 11, 2011 at 9:42 AM, John Brookes <haiticare2011@...> wrote: ? hilsch vortex cooler. holy smokes! Was it noisy? John B
[email protected] #59131 my understanding is the material is actually a sintered combination of carbon and tungsten which forms tungsten-carbide particles. Machine tool cutters are formed by combining the particles with a softer cobalt (sometimes with nickel) matrix. The result is "cemented carbide". mike toggle quoted message Show quoted text --- In 7x12minilathe@..., Leo Cormier <leocor@...> wrote: "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece. As far as "pull little pieces of carbide away" goes, that is exactly what grinding is. I spent 12 years in vary large machine shops (in shipyards) and we always used the green wheel to rough the brazed carbide tools and the wet diamond wheel to put a polish on just the carbide part of the tool. In a pinch, you can get by without the diamond. Leo
Jerry Durand #59135 The carbide mills I use on our small CNC are made of bacteria sized powder that's been sintered. I don't know if any "solid" carbide is actually cast as one piece. toggle quoted message Show quoted text On 10/11/2011 09:24 AM, Ray Kornele wrote: Most carbide tools are high-temp BRAZED! I, too worked in a machine shop, and ordered many of the tools, including M-5 for some special jobs that could not be cooled with coolant. I, also, ordered, and, installed a vortex cooler. Keeps things cool by producing super cold air. -- Jerry Durand, Durand Interstellar, Inc. www.interstellar.com tel: +1 408 356-3886, USA toll free: 1 866 356-3886 Skype: jerrydurand
jbrookes40 All Messages By This Member #59160 Hilsch was the original inventor of the vortex tube cooling system.? See ? toggle quoted message Show quoted text Mildly so. Not deafening, by a long shot. Just a moderate sound of air escaping. What surprised me was, in 1980 something, it only cost about $200. But, we had to install a refrigerated air dryer to supply air. Withouit the drier, the cooler kept shooting ice bullets, from frozen condensate from the air. We had some machining to do that had to be cooled, but, couldn't take liquid coolant. I don't think it was a hilsch. I assume that is a brand name?? KrazyKyngeKorny (Krazy, not stupid) On Tue, Oct 11, 2011 at 9:42 AM, John Brookes?<haiticare2011@...>?wrote: ? hilsch vortex cooler. holy smokes! Was it noisy? John B
Roy All Messages By This Member #59154 Not exactly: My point was that green wheels don't give as fine a finish as diamond wheels because the green wheels don't grind the actual carbide particles. Then again, it's been a long time since I used a green wheel! With newer carbide being finer grained, it may not make as much difference as it used to. Roy toggle quoted message Show quoted text --- In 7x12minilathe@..., Leo Cormier <leocor@...> wrote: "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece. As far as "pull little pieces of carbide away" goes, that is exactly what grinding is. I spent 12 years in vary large machine shops (in shipyards) and we always used the green wheel to rough the brazed carbide tools and the wet diamond wheel to put a polish on just the carbide part of the tool. In a pinch, you can get by without the diamond. Leo
Roy All Messages By This Member #59155 Brazing is how the carbide is attached to the steel shank, the carbide itself is sintered. Roy toggle quoted message Show quoted text --- In 7x12minilathe@..., Ray Kornele <krazykyngekorny@...> wrote: Most carbide tools are high-temp BRAZED! I, too worked in a machine shop, and ordered many of the tools, including M-5 for some special jobs that could not be cooled with coolant. I, also, ordered, and, installed a vortex cooler. Keeps things cool by producing super cold air. KrazyKyngeKorny (Krazy, not stupid) On Tue, Oct 11, 2011 at 7:41 AM, Leo Cormier <leocor@...> wrote: ** "The green wheels don't actually grind the carbide, they pull little pieces of carbide away & grind the binder." What binder? Carbide is a sintered material, which means that tiny pieces of carbide (almost powder) are compressed under great force and heated until it binds together as one piece.

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