Suction extraction to determine technical cleanliness

Cleanliness tests of oversized components, which are increasingly being used in the field of electromobility, can only be carried out with the usual wet extraction methods with high liquid quantities and sometimes only at great expense. And even if only parts of the component are to be tested, wet extraction processes reach the limits of feasibility. Even in the case of electronic components that are to be reused afterwards, there has been no satisfactory way of determining the particulate contamination up to now. In addition, wet extraction processes, which are usually carried out with extraction equipment in the cleanliness laboratory, are not suitable for carrying out cleanliness tests directly in the process environment, e.g. on assembly equipment, workpiece carriers or on random samples from the production process.

In comparison to wet extraction processes, the advantage is a significantly lower time and logistic expenditure as well as the omission of liquid extraction media. Control areas to be tested separately can be inspected separately precisely and without any special additional effort (e.g. masking).

Suction extraction also forms the ideal basis for robot-guided extraction processes and thus enables absolutely reproducible and economical particle extraction for cleanliness testing of components directly in the process environment during in-line testing.