For automotive manufacturers and automotive component suppliers, obtaining cleanliness results rapidly, accurately, and reliably over the entire workflow is a significant advantage. Often for this quality control task, multiple instruments from several suppliers are used to perform the analysis. For this reason, Pall Corporation and Leica Microsystems have joined efforts to offer an optimal, turn-key cleanliness analysis solution from a “single source”. The customer has the advantage of an overall solution and advice from both Leica and PALL experts to achieve optimization and maintain its performance over time.
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Cleanliness Analysis Workflow – Steps
Parts / Components Preparation
Part Types, Required Methods
Preparation method will depend upon the type of part or component and the sample size to be analyzed. Determine the solution required for the specific part and sample size.
Extraction / Filtration
Agitation, Parts Rinsing, Ultrasonication, Test Bench
Extract contaminant particles from parts and components with spraying, rinsing, or ultrasonication. The cleaning solution is then passed through a filter, the type depending on the parts cleaned, and the particles retained on membranes for analysis. Washing cabinets and filters of different sizes from PALL are used for this task. Filters are dried and then evaluated.
Detection, Quantification, Classification
The particles are detected, quantified, and classified according to their size and type, i.e., their potential to cause damage. It is done with a Leica Cleanliness Analysis Solution using a compound or digital microscope and Cleanliness software module.
ISO 16232 & VDA19
Review results from the analysis and identify if any potentially catastrophic particles are present. Metal particles have a higher potential for damage and the Leica imaging solution can identify metallic particles automatically. These potentially catastrophic particles can influence the longevity of a component or even cause a system failure.
With the results from a full cleanliness analysis, step by step the workflow can be optimized. Then the potentially catastrophic particles can be identified and the source of contamination determined and eliminated. The aim is to always improve the cleanliness analysis process in order to eliminate and minimize contamination.
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