Grade Enables High Speed Machining of Stainless Steel
American National Carbide has introduced the AN6120 carbide grade for machining stainless steel, designed to complement its AN6105 grade for high-temperature alloys. The new grade uses the same PVD nano coating technology along with a hard, micro-grain substrate to enable high speed machining of stainless steel with increased productivity. A post-coating treatment is said to ensure optimal chip control while reducing cutting forces. The grade features the company’s Synergy insert geometry and is available in a range of negative and positive rake inserts in standard shapes and sizes.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.
Applying ceramic inserts is not a simple substitution of one cutting tool material for another. There are significant process considerations that shops should examine carefully in order to realize performance and tool life expectations from ceramic inserts. Here's a look at some of the ways they are used.
The right choices in tooling and technique can optimize the thread turning process.