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Dephosphating

With state-of-the-art SurTec solutions for fast, environmentally friendly and gentle removal of phosphate layers before heat treatment.

Why dephosphating is crucial

A phosphate coating is often used when processing steel wire, for example during cold forming. This serves both as a lubrication aid during forming and as temporary corrosion protection.
However, these phosphate layers must be completely removed before heat treatment. If they are not removed, this can lead to increased delta ferrite formation, which significantly impairs the mechanical properties and corrosion protection of the components.

Residues from drawing soaps or other forming oils also pose a risk: They can cause surface defects in subsequent finishing steps and thus reduce the quality of the end product. It is also crucial to prevent excessive alkalinity from entering the heating furnace. Such carryover leads to vitrification effects on the furnace walls, which significantly shortens the service life of the heat treatment system.

Our innovative high-performance and pre-cleaning solutions ensure that all phosphate and lubricant residues are removed thoroughly and gently. The result: clean, bondable surfaces, reduced energy consumption in the process and significantly longer service life for your systems.

Your advantages at a glance:

  • Maximum process flexibility

    Can be used universally in immersion, ultrasonic and spray applications - for maximum adaptability to your production processes.

  • Perfectly combinable

    Compatible with recyclable SurTec surfactant products - for sustainable and economical cleaning solutions.

  • Protecting health and the environment

    Free from hard complexing agents - for a smaller ecological footprint.

Our products for dephosphating:

SurTec 199 P: High-performance phosphate removal

✔ Optimum removal of phosphate layers in the shortest possible time

✔ Automated and precise process control via conductivity

✔ Reduced phosphate sludge formation

SurTec 132: Pre-cleaning before dephosphating

✔ Minimizes the entry of impurities into the dephosphating process

✔ Increases the service life of the dephosphating process

✔ Reduces the risk of emulsification of introduced oil and thus foam formation

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