Restoration of a working surface and shaft necks (calender rolls, calibration, tension, contact rolls, etc.)

Restoration of a working surface and shaft necks (calender rolls, calibration, tension, contact rolls, etc.)
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The problems solved with the gas-thermal coatings:

  • lack of drawing data on a worn-out part;
  • long term of production;
  • high cost of repair and purchase of a new calender shaft;
  • originality of a product;
  • import substitution;
  • the high cost of shaft transportation on repair to the producer, including the customs duty.
Calender shafts are used in the following branches:

  • Polygraphy.
  • Light industry (the consumer goods from PVC, rubbers, plastics, etc.).
  • Textile branch.
  • Wood processing industry.
  • Chemical industry.

Use of gas-thermal spraying technologies allows to:
  • Increase a shafts working life by 3-4 times in comparison with galvanic chrome coated shafts.
  • Lower costs of repair and purchase of import expensive accessories.
  • Reduce equipment downtime terms under repair.
  • Gain considerable economic effect.
  • Refuse galvanic methods of coatings in favor of environmentally friendly gas-thermal spraying methods.
Gas-thermal coatings are:
  • resource-saving;
  • eco-friendly;
  • economic;
  • increasing parts working life by 3-4 times.
Increase in time of working life happens due to use of more solid coating material (carbides), than base shaft material (cast iron). Hardness of the received coating — more than 70 HRC, thickness of a finishing layer — 250-300 microns, adhesion — more than 70 MPas.

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