HIGH SPEED ROTARY METAL CUTTING TOOLS

Brand	Owner	Address	Description
AMERICUT	DAUPHIN PRECISION TOOL	200 Front Street Millersburg PA 17061	HIGH-SPEED ROTARY METAL CUTTING TOOLS, INCLUDING END MILLS, COUNTERBORES, COUNTERSINKS AND THE LIKE;AMERICA CUT;THE STIPPLING ON THE DRAWING IS A FEATURE OF THE MARK AND DOES NOT INDICATE COLOR.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The invention concerns a wear-resistant coating on rotary metal-cutting tools such as drill bits, countersinks, milling cutters, screw taps, reamers, etc. The coating according to the invention consists essentially of nitrides of Cr, Ti and Al with a unusually high share of Cr atoms, namely 30 to 60% referred to the totality of metal atoms. In multilayer coatings and even more in coatings made of homogeneous mixed phases, this high Cr share results in particularly large tool life distances for the tools hardened with these coatings. These tools exhibit their superiority particularly during dry use without cooling lubricants or with minimal lubrication.