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Trucks, Tractors & Machinery
abrasive wheel steel cutting chopsaw problems.
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<blockquote data-quote="greybeard" data-source="post: 1080413" data-attributes="member: 18945"><p>I kinda think it is too little pressure or the fact that I frequently pick up on the handle, glance at the cut, then get back into it. I cut one today, with just the same pressure all the way thru, never letting up and it cut it all right. I've used them lots in my life and never encountered the problem before, but usually didn't cut stuff this big with a chopsaw. We always had a slow rpm toothed blade with coolant to cut big stuff with--or a horizontal bandsaw. I "think" allowing it to cool for a second or 2 when I pick up off of it is causing the steel to carburize or case harden. </p><p></p><p>I was a machinist at one time for about 10 years and I ran into this problem machining some A2 cutlery stainless steel for Johnson & Johnsons suture needle formers. The end mill HAS to always be "pulling a full chip" or the steel hardens beyond the rockwell hardness of the carbide end mill. </p><p>Flipping them isn't easy, since I'm cutting off of full 20' lengths. Lots of trouble to get it all leveled and squared back up and I really need the pieces cut flat and square in both directions.</p></blockquote><p></p>
[QUOTE="greybeard, post: 1080413, member: 18945"] I kinda think it is too little pressure or the fact that I frequently pick up on the handle, glance at the cut, then get back into it. I cut one today, with just the same pressure all the way thru, never letting up and it cut it all right. I've used them lots in my life and never encountered the problem before, but usually didn't cut stuff this big with a chopsaw. We always had a slow rpm toothed blade with coolant to cut big stuff with--or a horizontal bandsaw. I "think" allowing it to cool for a second or 2 when I pick up off of it is causing the steel to carburize or case harden. I was a machinist at one time for about 10 years and I ran into this problem machining some A2 cutlery stainless steel for Johnson & Johnsons suture needle formers. The end mill HAS to always be "pulling a full chip" or the steel hardens beyond the rockwell hardness of the carbide end mill. Flipping them isn't easy, since I'm cutting off of full 20' lengths. Lots of trouble to get it all leveled and squared back up and I really need the pieces cut flat and square in both directions. [/QUOTE]
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abrasive wheel steel cutting chopsaw problems.
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