Lubricating films

01.1

for cold forming with and without ZWEZ-Coat separating film.

Lubricants, in other words lubricant films: oil-free films, dry and non-slip, gain importance for forming. The better the lubricating film, the higher the possibility to apply a thinner layer of phosphate or even to dispense with it completely.

Soap film

Historically, the first lubricating film used on the phosphate layer was stearate soap. This was the combination that was used as a starting point for the invention. Even today, soap film is still predominant in such processes. As the soap films became more efficient, it was possible to significantly reduce the phosphate layer. Since a soap film can only be formed on a phosphate layer, the phosphate layer cannot be dispensed with in the future.

Polymer film

As a current innovation in the field of lubricating films, the last few years have seen the introduction of polymers as a collective term for organic compounds on a wax-like basis. Initially as an alternative to the soap lubricating film, later also as a coating directly on the metal without the phosphate layer. i.e. better performance and significant advantages due to the largely unlimited bath life compared to the soap film.

Solid lubricants

Defined as lubricants based on inorganic minerals with a lamellar, i.e. structurally effective, layer lattice. These are aqueous dispersions containing molybdenum disulphide and/or graphite. Due to the inorganic contents, these films are extremely resistant to pressure, temperature and surface expansion. Another advantage is that there are no residues on the tools.

Simulation of a reshaping with ZWEZ- lubricating films

Simulated with EESY-2-form

Application of all ZWEZ lubricating films is carried out by immersion, flooding or spraying. After forming, the films remain on the parts as temporary corrosion protection or can be rinsed off. The ZWEZ-Lube films do not contain any heavy metals or other substances problematic for the environment.

The ZWEZ films are selected on the basis of the type of forming, the forming temperature and the respective load.

 

Procedure
  • Degreasing
  • Rinsing
  • Pickling
  • Rinsing
  • Activating
  • Phosphating
  • Rinsing
  • Neutralising
  • Lubricant coating

Y_162_Phos_Cold_Forming_EN

ZWEZ-Coat High-performance lubricant systems for cold massive forming of iron materials and stainless steel.

You would like to learn more about ZWEZ-Coat high-performance lubricant systems? We provide a free download containing all details about our high-performance lubricant systems for cold massive forming of iron materials and stainless steel.
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Y_169_Wire and tube drawing Znph_EN

ZWEZ-Coat High-performance lubricant systems for the production of wires, profiles and tubes as well as cold forging of cold heading wire.

You would like to learn more about ZWEZ-Coat high-performance lubricant systems? We provide a free download containing all details about our high-performance lubricant systems for the production of wires, profiles and tubes as well as cold forging of cold heading wire.
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Y_120_Forming_Aluminium_EN

Lubricant systems for the cold massive forming of aluminum

You would like to learn more about ZWEZ-Coat lubricant systems for the cold massive forming of aluminum? We provide a free download containing all details about our Lubricant systems for the cold massive forming of aluminum.

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