pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (25권3호 134-141)
A Study on the Surface Characterization of Fe-17wt.%Cr Steel for Cast-bonding of Al and Stainless Steel
Al과 스텐레스강의 주조접합을 위한 STS430(Fe-17wt.%Cr)강의 표면처리 특성연구
University of Ulsan
To overcome the undesirable deformation, peeling off and geometrical restrictions which were mainly caused by differences in thermal expansion coefficients during the cladding of aluminum strip and stainless strip, new processing method based on vacuum die casting is designed and implemented in fabricating Al/Fe-l7wt%Cr steel(stainless steel). To increase cast-bonding ability, the surface of Fe-17wt%Cr steel is electrochemically etched to have optimum pit size and density. The optimum conditions to generate best pit are as follows: Solution : 1M FeCl3+l M NaCl, Addition : CuCl2+HCl, Current density : 80 mA/cmz, Total current : 400 coulomb/cmz, AC frequency :60 Hz.
Cast-bonding, Al-STS steel, Electrochemical etching, Pit size and density.