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高档眼镜铰链用新白铜材料根据我国蓬勃发展的眼镜制造业所需白铜材料需进口，以及价格受镍价制约的现实，昆明冶金研究院组织科技人员研制出，低镍含铅白铜材料（１￣＃）和低镍加锰含铅白铜材料（２￣＃）。省经委组织专家鉴定认为：两种白铜材料具有满意的光学和力学性...
High-grade glasses hinges with new white copper material According to China’s booming development of the needs of the optical glass manufacturing industry needs to be imported, and the price is subject to the reality of nickel prices, Kunming Metallurgical Research Institute organized scientific and technological personnel to develop low nickel lead white copper material (1 ~ #) And low nickel plus manganese lead white copper material (2 ~ #). Provincial Economic Commission Organization experts believe that: two kinds of white copper material with satisfactory optical and mechanical ...