Aug 09, 2017
Carbide Inserts Cutting performance
Commonly used carbide cutting tools use scale
YG alloy: mainly used for processing cast iron, nonferrous metals and non-metallic materials. Fine grain cemented carbide (such as YG3X, YG6X) in the cobalt content with the grain than the hardness and wear resistance of the higher, more Processing some special hard cast iron, austenitic stainless steel, heat-resistant alloy, titanium alloy, hard bronze and wear-resistant insulation materials.
YT alloy: the outstanding advantages of high hardness, good heat resistance, high temperature hardness and compressive strength than YG high, good antioxidant function.Therefore, when the knife requires a high heat resistance and wear resistance , Should use the higher grade of TiC grade.YT class alloy is suitable for processing plastic materials such as steel, but should not be processed titanium alloy, silicon aluminum alloy.
YW alloy: both YG, YT alloy function, induction function is good, it can be processed steel, but also for processing cast iron and nonferrous metals. Such alloys such as the addition of cobalt content, the strength can be high, can be used for a variety of Difficult processing of rough processing and intermittent cutting.
Carbide cutting tools in the production process to prevent the occurrence of cracks in four main areas:
1, knife row own doubt. The thickness of the knife below the blade can not be less than 1.5 times the thickness of the blade (preferably more than 2 times).
2, the welding should be blowing the blade (nor too much), copper water to the full flow to the welding surface (that is, can not have Weld).
3, after cooling the cooling to be slow, the best use of sand after the knife to cover up the welding, 12 hours later.
4, grinding process do not water (can be used air-cooled), do not put the blade grinding too hot.
1, carbide cutting tool material
Tool material is the fundamental factor in determining the cutting performance of the tool, which has great influence on the machining efficiency, processing quality, processing cost and tool durability.
The harder the tool material, the better the wear resistance, the higher the hardness, the lower the impact toughness, the more brittle the material. Hardness and toughness is a contradiction, but also tool material should be overcome a key. For graphite tools, the ordinary tialn coating can be properly selected in the selection of toughness is relatively better, that is, cobalt content slightly higher; for diamond-coated graphite tool, the appropriate choice in the selection of the hardness is relatively better , That is, cobalt content is slightly lower.
2, geometrical angle of carbide cutting tools
Graphite tools select the appropriate geometric angle, help to reduce the vibration of the tool, in turn, graphite parts are not easy to collapse.