|
CESCO is proud to be an authorized representative of Allegheny Surface Technology, an industry leader in electropolishing, pickling/chemical cleaning, passivation, mechanical polishing, on-site services, and vessel refurbishment (including nozzle relocation and refinishing).
http://www.abccorporate.com/index.php?submenu=ASTHome&src=gendocs&ref=v2_ast_home&category=_v2_AST
CESCO offers the biotech industry a variety of factory & on-site services, to help keep your plant running. These include:
Factory Services:
|
Mechanical Polishing |
|
Electropolishing (EP) |
|
|
|
|
|
Segragated Mechanical Polishing Room with
Separate Ventilation & Impellers Polished to <5Ra |
|
EP Bath & EP'd Components |
On-Site Services:
• Electropolishing
• Mechanical Polishing
• Citric Passivation
• Nitric Passivation
• Complete Vessel Refurbishment
• ASME Code Welding
• Vessel Assessment
• Level II Inspection
• Liquid Penetrant testing
• Surface Measurement readings (Ra)
• Borescope inspections
• Documentation Package and Mapping
Electropolishing
Electropolishing is an electrochemical process that removes surface metal by attacking the high points on the surface. The surface becomes smoother and any contaminants and free irons will be removed. This will improve the corrosion resistance, reduce the product adhesion and contamination buildup, deburr and create a lustrous finish.
Advantages of Electropolishing
Polishing - Electropolishing decreases the surface roughness without creating directional lines and creates a lustrous surface. Corrosion resistance will be improved by removing contaminants introduced to the surface during the manufacturing process and handling of the part. Electropolishing also leaves a nickel-chromium enriched surface layer that enhances the metallic properties of stainless allowing the oxide layer to form.
Ease of Cleaning - By attacking the high points, electropolishing levels the surface of the material; thereby reducing product adhesion and contamination build up. Therefore, cleaning can be performed more efficiently and effectively. Electropolishing has been proven to reduce bacterial bio-film build up,
appearance of rouging.
De-burring - Electropolishing is well suited for de-burring. The electropolishing process naturally has greater current densities at high points and less at low points. Due to the higher current densities at
the high points the material and burrs, dissolve at a much faster rate, leading to a smooth clean surface.
Aesthetics - Through proper electropolishing the microscopic surface become smooth and clean, containing a nickel-chromium enriched surface that results in a lustrous finish. This allows a visual inspection to be completed since imperfections will be magnified.
Mechanical Polishing
Mechanical polishing is the mechanical smoothing and removal of contaminates. It involves grinding, polishing and buffing of the surface. This process is used to smooth out welds, prepare metal surfaces for electropolishing or provide a surface with a specified roughness. CESCO also offers compound-free mechanical polishing, a requirement in several pharmaceutical applications.
The techniques available are:
• Abrasive belt polishing
• Abrasive wheel polishing including nylon, flap and combination wheels
• Automated and hand polishing equipment
• Custom machinery for OD and ID polishing of tubular work pieces.
|
