Published at Friday, 04 January 2019. Industrial Machinery. By Adelisa Legrand.
Second Generation Coverings
Afterward being used on lesser cutting instruments, such as drills, inserts and end mills for many years, coverings made their initial slightly successful appearance in the band saw blade manufacturing in the early 1990's. These initial mono-block titanium nitrite (TIN) covered blades were costly and plagued by inconsistent industrial. Now, second generation coverings enable loftier speeds and feed rates by creating the tooth edge harder and tougher, protecting it from excessive abrasion and heat. Applying protective coverings to a band saw blade affords a demonstrable increase in output without lessening blade lifetime. These coverings are the next step of improvements that the band saw marketplace has been demanding—covered carbide for amplified feed rate and covered bi-metal for improved blade lifetime.
Create in virtually each metalworking store, the band saw silently does it's job. Innovative technology in the form of coverings and tooth geometry are creating sawing a possible source of efficiency in the store.
The last huge leap in band‐saw blade technology occurred in the mid 1960's with the establishment of bi‐metal technology, which was soon followed by the introduction of carbide-tipped blades.
Band sawing effectiveness was restricted prior to the advent of bi-metal blades. The band saw blade used to be made entirely of lofty carbon steel. It was pliable enough to withstand the stress caused by it's zigzagging path around the band saw engine's drive wheels and through the saw blade guides. Because it was essential to usage a softer, more elastic backing material, manufacturers were prohibited from exploiting on the sawing efficiency that could be gained by using a harder material that would provide a more durable tooth edge.
Bi-metal and carbide‐tipped band saw blades altered band sawing extremely and permanently. Since then, progressions in tooth formations, edge materials and support steels, tooth geometry, in addition to enhanced approaches for welding carbide-tipped teeth, have sustained the band saw blade's march toward amplified output and blade lifetime at a relatively steady step.
Recent developments in second generation physical vapor deposition (PVD) coverings and tooth design constitute the latest big jump in band sawing, such as the one experienced with the introduction of bi-metal and carbide-tipped blades.
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