论文部分内容阅读
采用粉末冶金工艺可以制成各种纪念币。还可以利用粉末冶金低密度,具有多孔性的特点,将香料填充到这些孔隙之中,使之即美观又芳香宜人。 1.烧结含香纪念币的生产工艺生产香币的工艺流程为:铜粉+外加元素→混料→压毛坯→烧结→表面清理→压图案→仿古→填允香料→抛光→表面处理→包装检验。 1)原辅材料生产仿古币用-100目青铜粉,生产仿金币用-100目黄铜粉,外加元素为-200目硬脂酸锌粉。 2)混料在铜粉中加入0.5％的硬脂酸锌粉,置于“V”型混料器中混合2小时,即可进行压制。 3)压毛坯将松散的粉料装入钢模中,再施以2～3Tf/cm~2的压力进行压制、就可得到一定尺寸与形状的压坏。毛坯密度为6.6～6.8克/厘米~3。
Using powder metallurgy process can be made of various commemorative coins. You can also use the low density of powder metallurgy, with the characteristics of porosity, spices will be filled into these pores, so that is beautiful and fragrant and pleasant. 1. Sintering incense commemorative coin production process The process of producing coins as follows: copper powder plus additional elements → → → roughing blank → sintering → surface cleaning → pressure pattern → antique → filling spices → polishing → surface treatment → packaging test. 1) raw and auxiliary materials for the production of antique coins with -100 mesh bronze powder, the production of imitation gold coins with -100 mesh brass powder, plus elements of -200 mesh zinc stearate. 2) Mixing Add 0.5% zinc stearate to the copper powder, and mix it for 2 hours in the “V” blender. 3) Press the rough loose powder into the steel mold, and then applied 2 ~ 3Tf / cm ~ 2 pressure to suppress, you can get a certain size and shape of the crush. Blank density of 6.6 to 6.8 g / cm ~ 3.