In operations such as edoren, sparks, wire sparks and zinc sparks, material is removed by means of electric spark flashover (discharge). This spark flashover requires liquid to cool the electrodes. This liquid (dielectric) must also be cooled again in order to realize thermal stability in this process.
Also in other machining operations where water is used as a coolant, control of the temperature of the coolant is desirable. The PFWC series has been developed especially for these applications.
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