Feedback controlled airfoil stripping system with integrated water management and acid recycling system

PURPOSE: A feedback controlled stripping system with an integrated water management and electrolyte recycling system which can be used to strip or remove coatings from a wide variety of workpieces is provided, and a process for utilizing the system to strip coatings from a wide variety of workpieces...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GLENN T. JANOWSKY, MARK R. JAWOROWSKI, CURTIS H. RIEWE, CHRISTOPHER C. SHOVLIN, MICHAEL A. KRYZMAN
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:PURPOSE: A feedback controlled stripping system with an integrated water management and electrolyte recycling system which can be used to strip or remove coatings from a wide variety of workpieces is provided, and a process for utilizing the system to strip coatings from a wide variety of workpieces is provided. CONSTITUTION: The coating removal system (10) comprises a stripping tank (12) containing an electrolyte bath stripping solution for removing a coating from at least one workpiece immersed in the electrolyte bath while a controlled absolute electrical potential is maintained on the at least one workpiece with respect to a reference electrode immersed in the electrolyte bath; a rinse tank (14) containing a rinse solution for rinsing the at least one workpiece after completion of removal of the coating from the at least one workpiece; and a distillation unit (16) for receiving electrolyte from the stripping tank containing dissolved metals, for purifying the electrolyte received from the stripping tank, and for returning the electrolyte in a purified form to the stripping tank, wherein the stripping tank, the rinse tank, and the distillation unit are mounted on a skid (18). The process for removing a coating from a workpiece using an electrochemical bath and for regenerating and recycling the electrochemical bath comprises the steps of stripping the coating from the workpiece by immersing the workpiece in the electrochemical bath for a sufficient period of time to remove the coating from the workpiece while the workpiece in the electrochemical bath is maintained with a controlled absolute electrical potential with respect to a reference electrode; and regenerating the electrochemical bath by atmospheric distillation. 본 발명은 폐수처리와 산 재생 시스템이 일체화된 피드백 제어된 코팅제거 시스템에 관한 것이다. 본 발명의 시스템은 전해조의 코팅제거 용액에 잠겨있는 기준전극에 대한 제어된 절대전위가 적어도 하나의 작업물에서 유지되는 가운데, 상기 전해조의 코팅제거 용액에 잠겨있는 상기 적어도 하나의 작업물로부터 코팅을 제거하기 위한 코팅제거 용액이 담긴 전해조를 포함하는 코팅제거 탱크; 상기 코팅제거 탱크로부터 작업물(들)을 제거한 후, 이 작업물(들)을 세척하기 위한 세척탱크; 및 상기 코팅제거 탱크로부터 용해된 금속들을 포함하는 전해질을 회수하고, 상기 코팅제거 탱크에서 회수된 전해질을 정화시키며, 상기 전해질을 정화된 형태로 상기 코팅제거 탱크로 재공급하기 위한 증류장치를 포함하여 이루어진다. 바람직한 실시예에서, 코팅제거 탱크, 세척탱크 및 증류장치는 하나의 받침대에 설치되어 있다. 상기 시스템은 제어 모듈을 더 포함한다. 작업물로부터 코팅을 제거하기 위해 상기 시스템을 사용하는 처리과정이 또한 상세하게 설명된다.