MANUFACTURING METHOD OF HIGH STRENGH 24K GOLD ALLOY WITH DECORATION MATERIAL MANUFACTURING METHOD WITH BE-CU,TI-CU

摘要

Purpose: provide an ornamental 24K billons, although maintain comprising 99.7% or more purity it is a small amount of be to pass through when the time, i.e., wherein hardness does not reduce when hardness was not reduced dependent on the time with the titanium as an intermediate alloy in proof gold, a hardness of the ornamental gold product with 100 Hv or more. Construction: ornamental billon, it maintains proof gold color and allows high-intensitive to include the copper beryllium alloy (- 4 weight % of copper for being) of 100 to 2500 ppm and the titanium copper (% of -15 weight titanium of copper) of 500 to 2900 ppm in a proof gold simultaneously, and wherein the sum of copper beryllium alloy and titanium copper is 0.3% or less, i.e., from 600 ppm, 3000 ppm.