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公开(公告)号：US20140246332A1
公开(公告)日：2014-09-04
申请号：US14074103
申请日：2013-11-07
申请人： MetCon, LLC
IPC分类号： C25F3/16
摘要： An aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 982 g/L and an effective concentration of ammonium bifluoride (ABF), and being substantially free of a strong acid. Methods of treating the surface of a non-ferrous metal workpiece include exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid less than or equal to about 300 g/L and a concentration of ammonium bifluoride greater than or equal to about 10 g/L, and having no more than about 3.35 g/L of a strong acid, controlling the temperature of the bath to be greater than or equal to about 54° C., connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath, and applying a current across the bath.
摘要翻译： 包含柠檬酸浓度在约1.6g / L至约982g / L范围内的有效电解质溶液和有效浓度的二氟化铵（ABF），并且基本上不含强酸。 处理有色金属工件的表面的方法包括将表面暴露于含有小于或等于约300g / L的柠檬酸浓度的电解质水溶液的浴中，并且使氟化铵的浓度大于或等于 至约10g / L，并且不超过约3.35g / L的强酸，将浴的温度控制在大于或等于约54℃，将工件连接到DC的阳极 电源并将直流电源的阴极浸入浴中，并将电流施加在浴槽中。
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公开(公告)号：US20170051428A1
公开(公告)日：2017-02-23
申请号：US15291784
申请日：2016-10-12
申请人： MetCon, LLC
IPC分类号： C25F3/16
摘要： An aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 982 g/L and an effective concentration of ammonium bifluoride (ABF), and being substantially free of a strong acid. Methods of treating the surface of a non-ferrous metal workpiece include exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid less than or equal to about 300 g/L and a concentration of ammonium bifluoride greater than or equal to about 10 g/L, and having no more than about 3.35 g/L of a strong acid, controlling the temperature of the bath to be greater than or equal to about 54° C., connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath, and applying a current across the bath.
摘要翻译： 包含柠檬酸浓度在约1.6g / L至约982g / L范围内的有效电解质溶液和有效浓度的二氟化铵（ABF），并且基本上不含强酸。 处理有色金属工件的表面的方法包括将表面暴露于含有小于或等于约300g / L的柠檬酸浓度的电解质水溶液的浴中，并且使氟化铵的浓度大于或等于 至约10g / L，并且不超过约3.35g / L的强酸，将浴的温度控制在大于或等于约54℃，将工件连接到DC的阳极 电源并将直流电源的阴极浸入浴中，并将电流施加在浴槽中。
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公开(公告)号：US09499919B2
公开(公告)日：2016-11-22
申请号：US14074103
申请日：2013-11-07
申请人： MetCon, LLC
摘要： An aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 982 g/L and an effective concentration of ammonium bifluoride (ABF), and being substantially free of a strong acid. Methods of treating the surface of a non-ferrous metal workpiece include exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid less than or equal to about 300 g/L and a concentration of ammonium bifluoride greater than or equal to about 10 g/L, and having no more than about 3.35 g/L of a strong acid, controlling the temperature of the bath to be greater than or equal to about 54° C., connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath, and applying a current across the bath.
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