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Usage of barrier coating for cutting tools for machining parts of titanium alloys

机译：阻隔涂层在切削钛合金零件的刀具中的用途

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Cutting tools with durable coatings are widely used in industry. Tools having coatings made from titanium nitride are most popular. They are used for structural and tool steels machining. Nevertheless their durability is not too high during the machining of hard materials. The reason for this fact consists in a high degree of adhesive interaction due to which the temperature in the cutting zone is increased and the action of water vapors and oxygen, resulting in coating softening, takes place. The durability of the compound coatings is three times more than for coatings made from titanium nitride during the machining of high temperature alloys and stainless steels. While machining titanium alloys, certain coatings do not provide the tools durability increase. This can be explained by the fact that titanium nitride forms adhesion welding bridges at cutting temperatures above 300° C.
机译：具有耐用涂层的切削工具在工业中被广泛使用。具有由氮化钛制成的涂层的工具是最流行的。它们用于结构钢和工具钢的加工。但是，在加工硬质材料时，它们的耐用性不是很高。该事实的原因在于高度的粘合剂相互作用，由此导致切割区域中的温度升高并且发生水蒸气和氧气的作用，从而导致涂层软化。在高温合金和不锈钢的机加工过程中，复合涂层的耐久性是氮化钛涂层的三倍。在加工钛合金时，某些涂层不能提高工具的耐用性。这可以通过以下事实解释：氮化钛在高于300°C的切削温度下会形成粘合焊接桥。

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