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Cryogenic processing Cryogenics is invaluable for woodworking tools. Carbide. high speed steel, coated or uncoated tools become longer running, sharper tools that don't need repeated resharpening treatment. Like metal cutting tools, the life expectancy increase is dependent on several underlying factors. First and foremost is the heat-treatment process itself. Tools that are manufactured with poor or sloppy heat treatment will show the most gains in longevity. (Remember, poor treatment is not necessarily sloppy treatment.) Often, because of the nature of the product and/or economics, some treatments have to be performed less meticulously in order to do the product at all.
A poor treatment may be the only feasible method of heat treating a product such as band saw blades.The blade must have sharp, hardened teeth, but a soft back band in order to flex and not break. For that reason, the blade is often induction or flame hardened on the tooth only. The tooth is raised to the austenizing temperature by localized temperature, followed by a waterfall of oil to quench the tooth. Then another form of heat is applied to temper the tooth. All this is done on a band of material traveling at several feet per minute. The grain structure near the bottom of the tooth is in various phases of transformation, and the temper was accomplished at such a fast speed there still exists unstable martensite and a fair amount of retained austenite.
Another manufacturing method that wreaks havoc with metal structure is that used to make carbide-tipped saw blades. The tip being soldered in place is accomplished with high temperature brazing with localized heat applied to the point of application. Once the tips are in place, they are ground to form the uniform cutting action. But all this work creates stress in the base material which affects cutting tooth alignment as the stresses pull teeth one way or the other. The other factor involved is the binder material which grasps the car- bide grains on the cutting edge. Once cryogenically processed, the stresses are removed and the binders are strengthened to give better durability and allow the carbide to stay in place and cut longer. Other factors can affect the results, such as properly ground cutting angles. Woodcutting tools can require vastly different cutting angles, rake angles, clearances, etc. On top of that, if abusive grinding or poor control of the grinding practices is performed, the tool cannot be expected to do its job with or without cryogenics. Many people grind cutting tools and turn them blue or black, followed by a thin pass to remove the color. That is one of the fastest ways to kill tool life and neither cryogenics nor any other process can solve those disaster. Speeds and feeds need to be interpreted correctly and religiously used. Once these basic things are under control, then cryogenics can really be successful.
Below is a list of some Woodworking components that can be cryogenic treated Band saw blades, Chain saw blades, chipper knives, Chisels, Circular saw blades, Dado blades, Files, Forming blades, Forster bits, Jig saw blades, Moulding cutters, Reciprocating blades, Saw blades, Sawall blades, Scroll saw blades, Shaping cutters Click here for the complete Parts Price List |
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