Decoating in coating centers & integrated into the tool regrinding process

Decoating / stripping is an important prerequisite for recoating at a high level of quality. The old, used coating is removed so that the new one will adhere well to the reground tool and achieve a high degree of performance. Regrinding without decoating leads to a reduction of the tool’s lifespan.

In coating centers, tools are usually decoated after regrinding

Decoating after regrinding can damage the final geometry of the tool and increase the risk of poor adhesion. In addition, packaging, transport and repackaging involve the risk of damaging the tool.

Decoating conventional way
Integrated decoating

By integrating the decoating process into the tool regrinding, decoating can take place before the regrinding

Advantages:

  • Elimination of transport and packaging
  • Less damage caused by handling
  • Chemical destruction after regrinding is prevented
  • Edge pre-treatment is fully effective
  • Adhesion is optimized
  • The tool performs almost as well as a new one

Two types of decoating units

We offer two types of decoating units – for carbide and high-speed steel – which we are happy to customize according to your requirements

CT20 ultra-fast decoating unit

CT decoating systems from PLATIT set new standards in decoating, especially for carbide tools. The problem of cobalt leaching is circumvented by protecting the substrate with a TiN adhesion layer as the decoating process of the CT systems will not attack the TiN layer. For the CT20, the decoating cycle all the way to the TiN adhesion layer will take less than three minutes. The end of the process is automatically detected by built-in electronics. The adhesion layer is not removed and therefore "overcoated" after regrinding and pretreatment. A service life comparable to that of a new tool is achieved.

Decoating unit CT20
  • The new environmentally friendly wet chemical carbide decoating unit from PLATIT
  • Fastest decoating process worldwide
  • Decoating time is less than 3 minutes all the way to the TiN adhesion layer and the decoating cycle stops automatically at the TiN adhesion layer
  • A single recipe for a wide variety of nitride coatings with a TiN adhesion layer, independent of tool size
  • Multiple coatings can be removed as well
  • Special holders for shank tools, hobs, inserts etc. to avoid attacking uncoated areas
  • Max. tool dimensions: ø 200 x 250 mm
  • Common chemicals available worldwide
  • The process takes place at room temperature, neither heating nor cooling is required
  • The end of the process will be automatically detected, which greatly simplifies the operator’s work

Learn more in the technical article "Productive Decoating of PVD Coatings".

Conventional decoating units

ST decoating units from PLATIT stand for great safety and flexibility. Depending on the module, they decoat Ti- or Cr-based coatings on carbide or high-speed steel.

  • HM module for decoating Ti-based coatings from carbide
  • CR module for decoating Cr-based coatings from carbide and high-speed steel
  • HSS module for decoating Ti-based coatings from high-speed steel
  • R Rinsing module
  • P Protection module
Conventional decoating units

You can find more information about the decoating procedure in our compendium p.51 - p.53 by clicking here or contacting us directly.

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