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1.在黄铜中应用热交换器用稀土黄铜管(HSn70-Re)是以稀土代替砷的新产品。在黄铜管中加入稀土后,各项技术指标(y_2状态)均达到GB8890—88要求,主要性能优于HSn70-1,
1. Application of brass in the heat exchanger with rare earth brass (HSn70-Re) is a rare earth replacement of arsenic new products. After adding rare earth in the brass tube, the technical indicators (y_2 state) meet the requirements of GB8890-88, the main performance is better than HSn70-1,