Water-based cleaning is suitable in the first instance for cleaning off inorganic contamination, such as salts or particles that are bonded firmly to the surface of the component. Rectification of organic/film impurities is also possible with high residual contamination demands, but with high process engineering effort for, say, bath cleaning and appropriate chemistry.
Generally speaking, cleaning systems represent the conclusion of a production process before assembly or before a further logistic process. However, a prerequisite for achievable quality, in equal proportions, are material properties and qualities, the quality and sequence of the mechanical machining methods, the training status of the staff used in the process and the quality of the deburring. Omissions in the preliminary process often make achievement of technically necessary purity demands difficult or even prevent these.
Each industrial cleaning system has a filtration circuit as part of the standard preparation, which is used for removing particulate contamination in the media flow. It reduces the particle burden with correct design and thus influences the volume of residual contamination and the particle size. To remove very fine particulate contamination, the organic contamination burden, such as oil or emulsion components, incidental flow preparations are generally used. In addition to improving the cleaning results, these systems extend the life of the baths in terms of their cleaning performance and process safety.
An integrated distillation system is capable, unlike any other media preparation system, of separating very fine particulate, chemical and organic contamination from the carrier medium, water, and thus maintain the quality of the baths, in particular the rinsing baths, over a protracted period. Energy-efficient heat coupling also holds the baths at their process temperature.
The system supplier, through its own capacity, or even its service partner, looks after the system post-delivery. During operation, however, the chemicals supplier has an important task with its service offer for bath care and maintenance of bath quality. In direct coordination with the system manufacturer, it is an important support for the operator.
The market offers a multitude of powerful cleaners, which are capable of producing very good cleaning results at low temperatures. The energy saved for maintenance of the bath temperature, however, is not usually in proportion to the higher energy expenditure that must be used for subsequent drying owing to the low component temperature. In addition, vacuum drying methods are often no longer possible through the low intrinsic energy of the components.
The quoted methods are usually a complementary mechanical washing method. Through its push-pull interaction, injection flooding performs low particle volume cleaning even with complicated geometries (e.g. deep hole drilling and cutting). Ultrasound is suited for cleaning off very fine particulate contaminations binding with the component surface.