Adjustment of cleaning agent concentration for electronic components

When cleaning electronic components, a cleaning agent with certain properties is needed. In order to obtain the best results, the agent must be present in a certain concentration. LEWA metering systems ensure the correct concentration of such cleaning liquids. Electronic components such as circuit boards are then immersed in the liquid to dissolve flux and other contaminants.

Solutions

LEWA metering systems offer the following advantages when adjusting the concentration of cleaning fluids: 

  • High level of monitoring: Application-specific critical parameters are continuously monitored using appropriate instruments and sensors.
  • LEWA smart control systems offer advantages compared to conventional control circuits: 
    • Faster attainment of the desired concentration
    • No long setting times
  • At shutdowns, it is not necessary to empty the system
  • Flexibility at changeovers: When using another medium, usually no changes to the system are necessary
  • Wide control ranges are covered 
  • Stainless Steel 316/316L (1.440111.4404) is used as the standard material. II required, other high-quality materials such as Hastelloy or duplex steel are available

Background

Electronic components often have the smallest components and filigree integrated circuits whose purity is very important. To ensure proper function, resin, flux, or other process residues must be completely removed. The circuited boards are immersed in a tank containing the detergent in a certain concentration. For optimal purification, the right concentration of the active ingredient is crucial. Thanks to constant comparison of actual and target values, LEWA metering systems ensure an exact and steady concentration of the cleaning agent.

A corresponding sensor in the immersion bath determines the current concentration - such as the conductivity or the pH value. The measured values are reported to the LEWA smart control. lf necessary, the controller initiates an adjustment of the concentration by adding more active agent into the immersion tank. 

Industries

LEWA solutions are found also in other industries, for example in the Varnish- and Lacquer industry
LEWA solutions are found also in other industries

Pumps and Metering Systems for Other Industries

LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.

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Products

LEWA ecoflow diaphragm metering pump all around talent

LEWA ecoflow® diaphragm metering pump

LEWA ecoflow is the innovative and universal metering pump with DPS diaphragm protection system in a tried-and-tested modular system. Suitable for numerous applications, the ecoflow is our real all-around talent, relied on by customers from all industries.

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LEWA ecodos diaphragm metering pump

LEWA ecodos® mechanical diaphragm metering pump

LEWA ecodos is an absolutely reliable, economical and highly adaptable metering pump, especially where diaphragm actuation is not wanted. Here, we also rely on our tried-and-tested modular system in designing the perfect pump for you.

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LEWA production units

Customer-Specific Metering, Mixing or Filling Systems from LEWA

Customer-specific batch/continuous systems for your production process. Metering, mixing, filling, separating, controlling temperature: We work with you to develop the ideal process-related sequence and produce the system that fits your production process – right up to the end product.

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LEWA customer specific metering systems

Customer-Specific Metering Systems from LEWA

Turnkey metering system in closed loop control with monitoring and plausibility testing equipment. Your individually configured metering system with an optimally designed pump for fluid metering in automated processes.

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