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Electropolishing, Deburring, Pickling, Passivation

Chemical Polishing

POLIGRAT processes for chemical deburring and polishing are used in many fields. They deburr, smooth and polish metal surfaces in a single operation in a reliable and cost-effective manner.

The principle

The processing chemical removes a thin layer of material across the entire wetted surface of the part, thereby smoothing and polishing it in the microsphere. At the same time any particles, flakes, debris, contaimination and structural damage contained in the surface layer is removed. Higher removal rates along tips and edges removes the burrs to be found there up to a size of approx. 0.5 mm.

Processing is largely independent of the form, size and structure of the parts. Simply immersing them in special tanks ensures a safe and cost-effective processing of the entire surface. Even in the µm range the removal rate is precise, controllable and reproducible. Removal is determined by the concentration of chemicals in the tank, the temperature of the solution and the current on the surface of the part. By controlling these parameters the repeatabilty of the processing can be guaranteed.

The application

Chemical deburring and polishing processes are used in the following applications:

  • Individual components in immersion tanks using baskets or suspension equipment
  • Pipes and long drilled holes by pumping the solution through the components
  • Small parts, mostly loose as bulk goods in drums, provided they cannot damage each other
  • Wires and strips by continuous processing on reel to reel equipment or in a loose bundle
  • Large containers by means of spraying or sprinkling

POLIGRAT processes

POLIGRAT offers a range of modern high-performance processes for chemical polishing and de-burring:

  • CARBOCHEM for the processing of carbon steels
  • TICHEM for the processing of titanium and titanium alloys
  • CUPROCHEM for the processing of copper and copper alloys
  • ALUCHEM for the processing of aluminium and aluminium alloys
  • ZIRCHEM for the processing of zirconium and zirconium alloys

In addition to chemicals for chemical de-burring and polishing, POLIGRAT provides specialist equipment for processing, including environmental technology, which is specially adapted to customers parts and requirements. POLIGRAT also offers processing services it its own sub-contract firms.

Titanium wheel rim bolts, chemically polished to improve corrosion resistance and fatigue strength (lifespan)
Hydraulic control piston, chemically polished to remove fine burrs and smooth the surface
Honeycomb seal for an aircraft engine, untreated
Honeycomb seal for an aircraft engine, finely de-burred by chemical polishing


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Valentin-Linhof-Straße 19
81829 Munich

Tel: +49 (89) 42778-0
Fax: +49 (89) 42778-309

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2 Holder Road
Hampshire GU 124 RH
Great Britain

Tel: +44 (1) 252 336337
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2, Rue St. Eloi
71300 Montceau-les-Mines


Tel: +33 (3) 85679999
Fax: +33 (3) 85679988

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POLIGRAT Canada Corporation
751 Lee Ridge Road
Edmonton, Alberta T6K 0P6


Tel: +1 (780) 756 3767
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5225 Milwee Street
Houston, TEXAS 77092


Tel: +1 (713) 6803777
Fax: +1 (713) 6803618

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Weidenweg 17
4310 Rheinfelden


Tel: +41 (62) 391.88-10
Fax: +41 (62) 391.88-11

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Cèhmester u. 8.
2170 Aszód
Magyarorzag Kft.


Tel: +36 (28) 553 060
Fax: +36 (28) 553 061

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Valentin-Linhof-Straße 19
81829 Munich


Tel: +49 (89) 42778-0
Fax: +49 (89) 42778-309

contact form

CARBOCHEM, TICHEM, CUPROCHEM, ALUCHEM, ZIRCHEM ,Titan, Zirkon, Kohlenstoffsthle, Kupfer, Kupfer-Legierungen, Aluminium