"The sales figures for flux concentrates have developed well. We have therefore decided to expand the segment further," explains Markus Geßner, Head of Marketing and Sales at Emil Otto GmbH. As conventional alcohol or partially alcohol-based fluxes are hazardous goods in terms of transport regulations, requirements have to be met that make the product even more expensive, especially due to the more complex transport. Shipping by air freight is also impossible, as in these cases the fluxes may only be packaged in small containers. This restricts the purchase of large quantities. To circumvent these problems, Emil Otto has been developing flux concentrates based on granules for some time. By optimising transport, the flux concentrates can be transported over long distances in a very economical way, as haulage companies charge much lower costs for non-hazardous goods. Mixing the flux on site is very simple. Each product comes with the necessary information on which liquid must be added to the concentrate and in what dosage.
This is also the case with the new liquid flux EO-MC-001, which was specially developed for the tinning process and can be used in electronics production as well as in strip tinning and radiator construction. "The concentrate can be mixed with alcohol or water, depending on what the user needs and where it will be used. For the electronics industry, the concentrate is mixed with alcohol to achieve rapid evaporation, among other things. For strip tinning and radiator construction, water is added to the concentrate," continues Geßner. For the latter applications, the degree of dilution depends on the process. The final quantity that the user receives after mixing the concentrate also depends on this. In combination with the high-performance additives, the flux ensures very good wetting and enables a very wide effective temperature range of approx. 130 - 300°C.