These tools materials of milling machines give insight into just how similar these tools are, and what their basic operations are. Listed below are the most common milling tool materials that you will encounter in a CNC milling machine.
Carbon Steel: Of all the milling machines’ tool materials, this is the most inexpensive one, and it has a 0.6 – 1.5 per cent carbon, coupled with small amounts of manganese and silicon. You will find this tool material mostly used for low-speed operations in forming tools, twist drills, milling cutter, and turning.
High-Speed Steel: This material is a combination of tungsten, chromium, and molybdenum, giving you a High-Speed Steel improved hardness, toughness, and wear resistance over the regular carbon steel. High-Speed Steel tools are far more expensive than the others, they are designed to last, and they have a high material removal rate for ferrous and nonferrous materials.
Solid Carbide: Although the High-Speed Steel is resistant to wear and tear, the solid carbide is far more resistant to wear and tear than it is, however, this material is susceptible to chipping instead of it evenly wearing out over time. For this reason, you will find that solid carbide is used mostly in finishing applications in newer milling machines or those that have less spindle wear.
Naturally, solid carbide tools are made by sintering carbide with other metals like titanium, tungsten, or even tantalum, and the combination of these materials give these tools a high heat resistance, making them suitable for high-quality surface finishes.
Ceramics: These tools are corrosion-resistant, and they are typically made from aluminum oxide and silicon nitride. Because of the fact that they are resistant to heat and wear, they are able to perform in high heat environments where other tools would not be able to. The ceramic tools are great for cast iron, hard steels, and super alloys.
Milling Tools Fundamentals
It does not matter whether you have an HSS (High-Speed Steel) or a carbon steel end mill, all your tools will still perform the same functions. The fundamentals of rotation direction, chip formation, chip load, and milling orientation will always be something that will be with you tall the time.
Click this link for good benchtop milling machine review.