粉末冶金生产的白炽灯用钨丝的机械性能既受加工过程中的各种条件的影响,也受添加元素和微量杂质的种类、含量、分布和结合状态的影响。不下垂钨丝是通过添加钾、铝、硅等元素而得到的。测极限还不够。迄今为止,人们对分布不均匀的杂质和添加元 The mechanical properties of tungsten filament for incandescent lamps produced by powder metallurgy are influenced not only by the various conditions in the process but also by the type, content, distribution and bonding of added elements and trace impurities. Tungsten does not drop through the addition of potassium, aluminum, silicon and other elements obtained. Measuring the limit is not enough. To date, there has been widespread concern about the uneven distribution of impurities and added elements