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Here you'll find a selection of frequently asked questions and answers for a quick overview.
Even minor deviations in the brazing process can permanently impair the functional properties of nitinol. In particular, the shape memory effect and superelasticity are sensitive to thermal stresses. Therefore, precisely controlled temperature profiles, appropriately selected solder alloys, and suitable fluxes are necessary to preserve the material properties.
Possible causes include organic inclusions in the surface metallization, flux components, or oxides dissolved in the solder. Void formation is also influenced by the interaction between the printed circuit board, component metallization, solder alloy, and process control.
Water-based fluxes are formulations that use water as a carrier medium instead of alcoholic solvents such as IPA or ethanol. They contain organic, halogen-free, and resin-free activators that specifically remove oxide layers from metallic surfaces. Emil Otto develops such systems with optimized drying properties that enable uniform wetting, stable soldering processes, and residue-free results.
The key advantage lies in reduced dependence on volatile commodity markets while maintaining consistent process quality.
Prices for isopropanol (IPA) and ethanol are rising due to geopolitical tensions and the resulting disruptions in global oil and gas supply chains. Both substances are directly linked to petrochemical processes. IPA is a byproduct of petroleum refining, while synthetic ethanol is derived from ethylene. In addition, the shift of production to the Asia-Pacific region and the prioritization of domestic markets are further limiting availability. Emil Otto GmbH is responding to this development with water-based fluxes that significantly reduce this dependence.
Rain does not completely remove all contaminants from solar panels. Pollen, in particular, can form a sticky layer when combined with moisture, causing other particles to adhere to it. For thorough cleaning, special photovoltaic cleaners are therefore often used, such as cleaning products from Emil Otto.
The switch to water-based fluxes is a strategic decision aimed at reducing risks in the supply chain and stabilizing production costs. By eliminating alcohol-based solvents such as IPA and ethanol, companies can insulate themselves from highly volatile raw material markets. Emil Otto offers a technologically advanced portfolio for this purpose that combines high process reliability, reproducible soldering quality, and economic advantages.
Depending on the cleaning agent used, substances such as lime and lime compounds, other salt-based contaminants, deposits, lichens, mosses, and algae can be removed. Contamination from soot, exhaust fumes, dust, or kerosene can also be a concern, particularly at solar parks located near transportation hubs.
Solar fluxes are specially formulated fluxes for soldering processes in photovoltaic manufacturing. They facilitate the wetting of metallic contact surfaces and help establish stable electrical connections between solar cells, cell connectors, and tabber and stringer materials.
Learn more: Solar flux for industrial solar module manufacturing
Emil Otto's cleaning products are specially developed for cleaning photovoltaic systems. They gently remove typical contaminants such as pollen, dust, and organic residues from the module surface. This allows solar modules to be cleaned efficiently without damaging glass surfaces or coatings.
Professional cleaning products are specifically designed to meet the requirements of photovoltaic systems. They remove contaminants such as pollen or dust without damaging the module surface. One example is Emil Otto’s range of cleaning products, which were developed for use in the solar industry.
