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Services > Chemical Polishing
Chemical Polishing & Deburring
Material removal
- without current
- at ambient temperature
- Homogeneous surface in the micro area
- Shiny surfaces
- Smoothening and rounding in the macro area
- Material removal by contact time without mechanical, thermic or chemical impact
- Free of burrs and smooth edges and surfaces
Why Chemical Deburring?
Chemical deburring will effectively remove all fine burrs over the entire wetted surfaces, (such as holes, cross bores and recessed cavities) including those areas where normal access is impossible. An overall reduction of the general surface micro-roughness is also achieved.
The Principle of Chemical Deburring
The immersion of a component in a specialised chemical solution, will result in the controlled chemical erosion of the exposed surfaces.The treatment involves immersing components into the chemical solution either singly or on jigs. Large vessels, can be treated by using a spray on technique. Processing of tubes or extended bores of components can be achieved by pumping the solution through the areas being deburred.
The amount of metal removed will be controlled by the immersion time. The rate of metal removal will not vary greatly within the limits governed by the chemical concentration of the deburring solution.
The actual rate of removal is approximately 1 - 3 microns / minute dependent upon the material being processed.
The Advantages of Chemical Deburring
- All wetted surfaces are deburred and smoothed, including those areas where normal access is impossible
- Surface fissures are removed giving improved service life and component durability
- Friction and therefore wear, is significantly reduced
- Dimensional accuracy within fine limits can be maintained
- Significant improvement in homogeneity and adhesion of subsequent plating deposits or CVD and PVD coatings
- Operate without any mechanical distortion, allowing even the most sensitive components to be processed without risk of damage
- The quality and strength of welded and soldered joints is improved
- The fusing action with glass is improved
- A totally clean metallic surface is generated
The Application of Chemical Deburring
POLIGRAT processes for chemical polishing and deburring are reliable and economical in use. They have been successfully employed in many areas of industry including:- machined components and pressings
- hydraulic and pneumatic controls
- pistons, tubes and nozzles
- textile machine components and needles
- gear wheels, pinions and ball bearing cages
- stator plates
- spring and control switch elements
- apparatus, containers and fittings
- wire and strip
What Materials can be Chemically Deburred?
Poligrat have chemical solutions and processes which are designed to effectively deburr most of the common engineering materials, such as:- Austenitic & Ferritic Stainless Steels
- Mild Steel, Tool Steel & Speciality Steels
- Copper & Copper Alloys
- Aluminium & Aluminium Alloys
- Nickel & Nickel based Alloys (Monel, Hastelloy, Inconel)
- Magnetic Alloys
- Chrome Cobalt Alloys
- Zirconium & Zirconium Alloys
- Titanium
Almost any size and shape of component can be treated
