Development of the 925 Silver Alloyed Tension Jewelry with Press Forming Process

가압성형법을 이용한 925 은합금의 텐션형 주얼리 개발

  • 송오성 (서울시립대학교 신소재공학과) ;
  • 김상엽 (서울시립대학교 신소재공학과)
  • Published : 2006.10.31

Abstract

Defects in the conventional casting process of silver jewelry can result in famished products of mediocre hardness. To overcome the shortcomings of conventional methods, we proposed new press forming process, which involves applying uniaxial pressure on casting 92.5%Ag-6.5%Cu-1%Zn ring elements and shaping with a lath. We investigated Vickers hardness, density, and microstructure evolution by changing the applied uniaxial pressure. We report that our newly proposed process can increase the hardness up to 2.3 times and decrease average grain size by 50%. Our method leads to drastic mechanical property enhancements, and is thus suitable for casting tension-style jewelry.

Keywords

Silver alloy casting;press forming;tension rings;925 silver;silver alloys