How can you change unsuitable water hardness levels?
There are specific measures that can help, depending on the situation (either freshly mixed or after mixing).
If your mixing water is too soft (< 5°d), we have a special additive you can use: Adding a hardener containing Ca2+ will change the alkaline earth content of the water. This measure is usually only required with freshly mixed preparations, as the total hardness of emulsions increases over time.
If the mixing water has a relatively high total hardness, replenishing the volume losses after mixing with demineralised or deionised water is the key to success.
Chloride and germs as additional influencing factors
You should also ensure that the mixing water has a low chloride content. Too high a value primarily has a negative impact on the corrosion protection behaviour of water-mixed coolants. Furthermore, the mixing water should not be contaminated with microbes. In this respect the requirements are the same as those for drinking water quality.
An overview of our guidelines for best results
Our tip: Ensuring that the composition of the mixing water meets specific minimum requirements will help you to achieve the best results. Our overview shows you the key data for machining at a glance: