公开(公告)号：US4915801A

公开(公告)日：1990-04-10

申请号：US363316

申请日：1989-06-05

Applicant: Dieter Brodalla ,  Werner Huppertz ,  Georg Wagner ,  James W. Costello ,  Karl-Heinz Munk

Inventor： Dieter Brodalla ,  Werner Huppertz ,  Georg Wagner ,  James W. Costello ,  Karl-Heinz Munk

IPC: C25D11/22

CPC classification number: C25D11/22 ,  Y10S204/09

Abstract: A process and circuitry for the electrolytic coloring of an anodized article of aluminum or aluminum alloy in a coloring bath containing at least one metal salt for coloring the article. The process comprises applying to the coloring bath a controllable, asymmetrical and substantially sinusoidal a.c. voltage of substantially constant frequency. The sinusoidal a.c. voltage is obtained from a voltage source supplying a symmetrical sinusoidal a.c. voltage and at least one of the two current paths is divided into two parallel main lines and fed to electrical components whereby the amplitude level of the positive half wave and the amplitude level of the negative half wave and the ratio of the amplitude level of the positive half wave to the amplitude level of the negative half wave of the a.c. voltage applied to the coloring bath are made variable and adjustable independently of one another, adjusting the positive half wave and the negative half wave to the desired values, and recombining the main lines to form the a.c. voltage applied to the coloring bath.

Abstract translation: 一种用于在包含至少一种用于着色该制品的金属盐的着色浴中的铝或铝合金阳极氧化制品的电解着色的方法和电路。 该方法包括向着色浴中施加可控的，不对称的和基本上正弦的a.c. 电压基本恒定的频率。 正弦曲线 从提供对称正弦曲线交流电源的电压源获得电压。 电压，并且两个电流路径中的至少一个被分成两条平行的主线并被馈送到电气部件，由此正半波的振幅电平和负半波的振幅电平以及正的幅度电平的比率 半波到负半波的幅度水平 施加到着色浴的电压变得可变并且彼此独立地调节，将正半波和负半波调整到期望值，并重新组合主线以形成直流。 电压施加到着色浴。

公开(公告)号：US4992155A

公开(公告)日：1991-02-12

申请号：US463180

申请日：1990-01-10

Applicant: Dieter Brodalla ,  Werner Huppertz ,  Georg Wagner ,  James W. Costello ,  Karl-Heinz Munk

Inventor： Dieter Brodalla ,  Werner Huppertz ,  Georg Wagner ,  James W. Costello ,  Karl-Heinz Munk

IPC: C25D11/22

CPC classification number: C25D11/22 ,  Y10S204/09

Abstract: A process and circuitry for the electrolytic coloring of an anodized article of aluminum or aluminum alloy in a coloring bath containing at least one metal salt for coloring the article. The process comprises applying to the coloring bath a controllable, asymmetrical and substantially sinusoidal a.c. voltage of substantially constant frequency. The sinusoidal a.c. voltage is obtained from a voltage source supplying a symmetrical sinusoidal a.c. voltage and at least one of the two current paths is divided into two parallel main lines and fed to electrical components whereby the amplitude level of the positive half wave and the amplitude level of the negative half wave and the ratio of the amplitude level of the positive half wave to the amplitude level of the negative half wave of the a.c. voltage applied to the coloring bath are made variable and adjustable independently of one another, adjusting the positive half wave and the negative half wave to the desired values, and recombining the main lines to form the a.c. voltage applied to the coloring bath.