Advanced Technologies for Determination of Surface Cleanliness

Abstract

For high utility value of products is significant quality of surface treatment. Among the processes that most affect the quality of surface treatment are mainly surface pretreatment processes, namely processes of cleaning (degreasing). This article is devoted to quality control after surface pre-treatment. It mainly deals with the modern method for detecting surface contamination grease based on fluorescence methods. Impurities such as grease, oil and other have characteristic fluorescence after illumination by UV source. This principle can be used to determine the purity of the substrate surface, thereby ensuring the quality of the surface. Surface cleanliness is very important factor for the correct application of subsequent technological processes.

Enhanced Clean-In-Place Monitoring Using Ultraviolet Induced Fluorescence and Neural Networks

“…The fluctuations in the fouling volume indicator chart are due to the proportionality of the fouling thickness to the pixel intensity, which is increasing until a certain value and then asymptotically floating [ 14 , 16 ] as schematically reported in Figure 15 .…”

“…Within manufacturing, fluorosensing has been used for the detection of grease (conjugated double bond hydrocarbons (alkenes)) on mechanical components during cleaning processes [ 14 ]. Issues arise when trying to monitor the amount of fouling remaining since there is a saturation of signal above certain thicknesses, making it difficult to determine the volume of fouling remaining.…”

Study of Measurement Strategies of Geometric Deviation of the Position of the Threaded Holes

“…The caliber, when screwed into the holes, is gradually adjacent to the hole until it is finally secured in place. Also, tapered pins are used where the surface on which the thread is located is not perpendicular to the axis of the thread [8,9]. …”