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硬质合金刀具行业在材料方面面临着许多同题,因此,正在大力加速产品更新换代的研制工作.在美国,各硬质合金刀具生产厂有一个共同的目标,即试图在产品中尽可能多节约一些钽,因为他们深信:有朝一日钽将出现严重短缺.为了减轻对钽的依赖关系,应逐步减少钽的用量或完全不用.在不久的将来,可望成为现实途径的有如下几个方面:1:用碳化铌来取代TaC欧洲普遍用碳化钽与碳化铌混合物来取代单纯的碳化钽,而美国却是用价格低兼的铌来取代价格昂贵的钽。考虑到钽和铌的密度不同,价格比率如为5比1,则可取代分子量的40%,这样可使硬质合金成本降低50%左右,目前取代比率已达5%。2:减少碳化钽的百分比在有些情况下,钽是必不可少的,这是为了调整晶粒,加强性能,
The cemented carbide tooling industry faces many of the same problems with materials, and is therefore accelerating the development of product replacement. In the United States, all cemented carbide tool makers have a common goal of trying to get as much of the product as possible Save some tantalum because they are convinced: one day will be a serious shortage of tantalum.In order to reduce the dependence on tantalum, the amount of tantalum should be gradually reduced or not used in the near future, is expected to be a practical approach in the following aspects: 1: Replacing TaC with Niobium Carbide Instead of pure tantalum carbide, a mixture of tantalum carbide and niobium carbide is commonly used in Europe, while the United States replaces expensive tantalum with niobium, which is low in price. Taking into account the different density of tantalum and niobium, the price ratio of 5 to 1 for example, you can replace 40% of the molecular weight, which can reduce the cost of carbide about 50%, the current replacement rate has reached 5%. 2: Reduce the percentage of tantalum carbide In some cases, tantalum is essential, which is to adjust the grain, to enhance performance,