提高硬质合金拉丝模寿命的研究进展

如何提高使用寿命是硬质合金拉丝模研究的重要方向.而模芯材质、内孔涂层和内孔结构设计是影响硬质合金拉丝模寿命的重要因素.由于硬质合金拉丝模存在耐磨性较差、寿命较短的缺点,本文从基体材质优化、涂层处理、内孔结构优化三个方向,介绍了提高其寿命的研究进展.通过以下方法可以有效地提高硬质合金拉丝模的使用寿命:低钴超细晶硬质合金,...

Development of Raising the Lifetime of Cemented Carbide Drawing Die

How to improve the lifetime is the important research direction of cemented carbide wire drawing die.Material,inner coating and pass structure are the decisive factors affecting the lifetime of carbide wire drawing die.Owing to the poor wear-resisting performance of cemented carbidedrawing dies,the lifetime of drawing dies is short.In the paper,three directions of improving service of cemented carbide drawing dies were described,i.e.the improvement of matters,coating treatment and pass optimization.The lifetime of drawing die can be significantly improved by such approachs as:low cobalt superfine cemented carbide,adding rare earth elements,coating diamond,selecting the appropriate half angle of working area and the length of lubrication area,working area and bearing zone.