Test piece for evaluation of effectiveness of particle extraction method for determination of technical cleanliness of components, involves channels taken up with defined surface in housing, where channels have internal thread

摘要

The piece (1) has channels (5, 7) taken up with a defined surface in a housing (3), where the channels have an internal thread (9). A filling opening flows perpendicularly into the channels, and the piece is made of aluminum, stainless steel, plastic or ceramic. The surface of the piece has a roughness number in the range of 0.8 to 2, and piece is parallelepiped-shaped formed. The opening is formed in a symmetry plane of the piece, and the channels are designed as boreholes in the housing to bring the thread and/or a thread section (13) into the channels. The particles are made of steel, quartz sand, plastic and ceramic. An independent claim is also included for a method for evaluation of effectiveness of a particle extraction method.