Coatings can be roughly divided into the following 5 types based on the scope of use. Uncoated Uncoated cutting tools are the cheapest and are usually used for processing soft materials such as aluminum alloy and low-carbon steel. Black oxide coating Oxidized coatings can provide better lubrication than uncoated tools, and also have better oxidation resistance and heat resistance, which can increase the service life by more than 50%. Titanium nitride coating Titanium nitride is the most common coating material and is not suitable for materials with high hardness and processing temperature. Carbon nitride titanium coating Carbon nitride titanium is developed from titanium nitride and has higher resistance to high temperatures and wear, usually in purple or blue. Used to process cast iron workpieces in Hass' workshop. Aluminum titanium nitride coating Aluminum titanium nitride is more resistant to high temperatures than all the above coatings, so it can be used in higher cutting environments. For example, processing high-temperature alloys. It is also suitable for the processing of steel and stainless steel, but due to the presence of aluminum, chemical reactions may occur during the processing of aluminum. Therefore, it is necessary to avoid processing materials containing aluminum.
Generally speaking, adding cobalt containing diamonds with a carbon nitride titanium coating or titanium nitride coating is a more economical solution.
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