黄铜HSn70-1A、HA177-2A的抗冲刷能力比较研究

EROSION RESISTANCE OF HA177-2A IN COMPARISON WITH HSn70-1A

利用自制的冲刷腐蚀装置,对HSn70-1A、HA177-2A黄铜管进行冲刷试验,对实验数据进行曲线拟合.结果表明:HSn70-1A、HA177-2A的冲刷腐蚀率与Cl-浓度及含砂量均成抛物线关系.HSn70-1A黄铜较HA177-2A黄铜对Cl-更敏感,更耐砂冲刷腐蚀;而HA177-2A黄铜较HSn70-1A黄铜更耐Cl-冲刷腐蚀.在低砂含量时,HA177-2A的抗冲刷腐蚀能力较HSn70-1A高;在高砂含量时,HA177-2A的抗冲刷腐蚀能力较HSn70-1A低.

With the self-made erosion test device,the erosion test of HSn70-1A brass and HA177-2A brass was carried out,and the right experiment data were matched into curves.The results showed clearly that the [Cl^-]and sand content influence the erosion.With the [Cl^-]or sand content increasing independently,the material erosion rate increased in a parabolic relationship.HSn70-1A brass was more sensitive to Cl^- than HA177-2A brass,but it was more resistant to the erosion of sand in comparison with HA177-2A brass.However,when the sand content was low,the erosion resistance of HA177-2A brass was higher than HSn70-1A brass while in high sand content conditions,the result was just reversed.