Study on the Influence of Metal Materials on the Migration of Heavy Metals in Stainless Steel Kitchenware

摘要

In this paper, the migration of heavy metal Ni and Cr was tested and compared for several kinds of food contact stainless steel materials 430, 304, 20Cr13, 30Cr13, 30Cr14, 50Cr15MoV and Germany 1.4116. Study the effect of different materials on the migration of heavy metals. The results show that the migration of austenitic stainless steel is significantly less than that of martensite. The migration of different materials is different. 50Cr15MoV and 30Cr13 are more likely to have migration than the national standard. The migration of 20Cr13 and 30Cr14 is relatively Lower, Germany 1.4116 has the least amount of migration; the same material, the migration of the product is also very different, which has a greater impact on the microstructure of the material. The metallographic structure corresponding to the product with low heavy metal migration is uniform and dense, and the metallographic structure corresponding to the product with high heavy metal migration is coarser, and the density and uniformity are poor.