Stainless steel wire cleaning, degreasing and salting lines

Stainless steel wires must be completely degreased prior to heat treatment in muffle furnaces, which can reach temperatures up to 1200 °C, because dirt residuals rapidly obstruct the muffles and form permanent stains on the wire.

In Coseco lines, the wire undergoes the following phases:
- an initial degreasing operation through phosphoric acid: an ultrasonic transducer system submerged in the tank enhances the effect of the acid to thoroughly remove calcium stearates;
- a second alkaline electrolytic degreasing operation to complete the cleaning process.

The plants by Coseco do not use electrolytic systems in the acid degreasing phase to prevent the dissolution of harmful metals – such as hexavalent chromium – which would require complex systems for the neutralization of the liquid wastes. After the heat treatment, the wires that require additional extruding are coated with TRI salt in a so-called “SALTING” unit and then dried.

Instead, the finished wires bypass the “SALTING” and drying units and are wound into coils.
The company’s standard lines include the following systems:
- bath heating system;
- gas exhaust and washing unit;
- electric control boards.

They are supplied in pre-assembled modular units which are ready for installation.

Coseco lines are designed after thoroughly analyzing the customer's specific requirements to fully satisfy production and quality parameters.