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    • 49. 发明公开
    • Automated wet masking for diffusion coatings
    • Automatisierte NassmaskierungfürDiffusionsbeschichtungen
    • EP2564936A2
    • 2013-03-06
    • EP12181933.8
    • 2012-08-28
    • General Electric Company
    • Woodard, Nicholas ShawnKing, Albert Dean
    • B05B7/04B05B13/02B05B15/04F01D5/00
    • B05B7/04B05B13/0285B05B14/30C23C8/04F01D5/288F05D2230/80
    • A wet masking system (60) for applying a maskant to a portion (16) of a workpiece (10) includes one or more pressurized mixing vessels (62, 64) with agitators (66) for continuously blending the ingredients of the maskant, a dispensing system (88) connected to the vessels (62, 64) for supplying metered volumes of maskant to injection valves (94, 96). An electronic controller (20) operable for controlling the system (60) to coat the portion. A fixture (30) for holding the workpiece (10) with just the portion (16) inside a cavity (31) of the fixture (30) includes one or more inlet ports (44, 46) alignable with injection ports (104, 106) of the injection valves (94, 96) injecting the maskant into the cavity (31). Heaters (110, 112) are positioned for drying or flash drying the maskant on the portion of the workpiece. Recirculation lines (114, 116) from the injection valves (94, 96) to at least one of the mixing vessels (62, 64) operated by the controller (20) to flow the maskant through the recirculation lines (114, 116) after a period of time when no maskant is flowing through masking system (60).
    • 用于将掩模剂施加到工件(10)的部分(16)的湿式掩蔽系统(60)包括一个或多个加压混合容器(62,64),其具有用于连续混合掩蔽剂的成分的搅拌器(66) 分配系统(88)连接到容器(62,64),用于向喷射阀(94,96)供应计量的掩蔽剂。 一种电子控制器(20),可操作用于控制系统(60)涂覆该部分。 用于仅将夹具(30)的空腔(31)内的部分(16)保持在工件(10)上的固定装置(30)包括一个或多个可与注射口(104,106)对准的入口端口 )将注入阀(94,96)注入到空腔(31)中。 定位加热器(110,112)以在工件的部分上干燥或快速干燥掩模。 从控制器(20)操作的从注射阀(94,96)到至少一个混合容器(62,64)的再循环管线(114,116)经由再循环管线(114,116)流过掩蔽剂 当掩蔽剂流过掩蔽系统(60)时的时间段。