![]() Manufacturers use terms like “sub micron” and “micrograin” to describe the better grades. This can come about either by way of how the material is prepared or because of the grain size. Cheap carbide has a lot more binder than expensive high quality carbide. Hence, a lot of the quality of the carbide is a function of how much tungsten carbide grains there are versus how much binder. More about end mill coatings below.Īs one would expect, it is the tungsten carbide and not the binder that does the serious cutting. In addition, there may be a very thin end mill coating to further enhance performance. Nevertheless, The material is not a solid metal at all, but a matrix composed of tungsten carbide (which itself is tungsten and carbon in equal parts) held together with a binder–typically cobalt. BTW, I don’t think they’re trying to pull the wool over anyone’s eyes, marketing just can’t resist more adjectives and you could as easily say they use “solid” to refer to endmills that don’t use inserts. While end mill manufacturers frequently refer to their cutters as “solid carbide”, in truth, they are more accurately called “cemented carbide”. Let’s start with the material carbide end mills are made from. Here’s a video from my CNC Chef series for Cutting Tool Engineering that covers the basics: Our article linked to the left gives you the full details on what’s called for with Titanium. Certain materials, like Titanium, place very specific requirements on tooling if you want to be productive and competitive. This article is from a fairly general point of view. We’ll also tell you the secret to evaluating the economics of whether premium endmills make sense for you or not. In this article, we’ll take a look at the four main factors that cause end mills to perform differently: the grade or quality of the carbide they’re made from, their geometry, the end mill coatings, and premium quality control. Different endmills really do perform differently, and they sure do come in a wide range of prices. ![]() Manufacturer’s recommended speeds and feeds fall into bands depending on the material and type of cut, but they are not all the same. Many develop fierce loyalties to the brand that has worked for them. End Mill Coatings, Grades & Geometries? Why are some end mills so much more expensive, and are they worth it?Įvery machinist must have wondered about this question at some point. ZrN coating optimizes flute geometries guaranteeing clean cuts and eliminating sanding whilst creating harder and tougher edges for prolonged cutting edge life.Note: This article is Lesson 8 of our Feeds & Speeds Master Class. Providing the ability to run faster speeds than uncoated end mills. ZrN coating is polished and precise for metal cuttingĪmana tools offer a ZrN coating also known as Zirconium Nitride. The thicker the diameter the better it is at plunging, and a thinner diameter gives it the ability to cut more detailed edges. ![]() The Cutting diameter is the thickness of the cut. ![]() Whether you are plunging or rounding an edge, understanding the right end mill type and cutting diameter is key to enhancing your CNC milling experience.įlat End Mill - (also known as square end mill) Is best for use with milling, plunging, and groovingīall End Mill - Is best for use with milling complex three-dimensional contours, slotting, and pocketing You can be confident in the brand and the quality when purchasing Amana Tools. ![]() Every tool features outstanding tool longevity and excellent cutting details with a mirror-like carbide finish. Amana tool specializes in industrial quality solid carbide, insert carbide and carbide-tipped cutting tools for the woodworking, plastics, aluminum, composite and metal industries. ![]()
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