| 摘要 |
An apparatus for cleaning castings includes a cleaning cabinet having a rotary clamping device which clamps a casting to be cleaned upon a freely rotatable plate in the cabinet. An elongate lance having a high pressure nozzle at its inner end projects into the cabinet and delivers a high pressure water jet against the casting at a pressure of 1,000 psi to 40,000 psi. A spherical bearing pivotally and rotatably mounts the lance on a vertically reciprocal carriage. A pair of pneumatic cylinder and piston units are connected to lance and are differentially operated with respect to actuation times and length of piston stroke to thereby produce random movement of the lance during the cleaning operation.
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