Sharpe Mixers
    Company
    Directions
   
Online Store

    Parts & Service
Mixers

    Portable Mixers
    E-Series Mixers
    N-Series Mixers
    V-Series Mixers
Impellers
    Marine Propeller
    Hyflo Impeller
    Axial Impeller
    Radial Impeller
    Anchor Impeller
    Helix Impeller
    Folding Impeller
    Hub Attachments/Options
Shafts & Seals
   
Shafting
    Dust/Vapor Seals
    Stuffing Glands
    Mechanical Seals
Other Options
    Steady Bearings
    Materials, Coatings
      & Polishings

    Options and Accessories
Markets
    Chemical
    Fluid Gas Desulferization
    Food and Beverage
    Pharmaceutical
      and Biotechnology

    Pulp and Paper
    Water and Wastewater
      Treatment

Literature
    Mixer Selection Guide
    Brochures
    O&M Manuals
    Disassembly Instructions
    Sales Drawings

    Literature Request Sheet

 Sharpe Materials, Coatings and Polishings

Polished Split Hyflo ImpellerSharpe Mixers’ standard material for our Portable and F-series lines in stainless steel 316.  Our large mixers are offered in both stainless steel 316 and carbon steel as standards.  In addition to these standards, Sharpe Mixers has the ability to fabricate any mixer in a variety of exotic alloys to meet our customer’s requirements for corrosion or abrasion resistant materials.  Some examples of the exotic alloy options are Hastelloy, Ferallium, Alloy 20, AL6XN, Monel, Nickel 400, Titanium, and abrasion resistant steel.

Polished portable shaft assemblyMost customers know which materials have the best corrosion or abrasion resistance to their products and have specific material requirements that are included with their request for quotation or specifications.  However, if a customer is not sure which material is appropriate for their application, Sharpe Mixers will provide samples so that the customer, or the customer’s designated testing facility, can perform corrosion resistance or abrasion tests.

Sharpe Mixers guarantees that the material of construction meets the customer’s specifications and can provide material certification upon request.  The cost of special alloy mixers varies greatly, depending on the type and size of the equipment and the specific material required for the application, but the additional cost is almost always outweighed by the additional life of the equipment that using a corrosion or abrasive resistant material provides.  Exotic alloys typically add two to four weeks to a normal fabrication schedule due to special welding and machining requirements and material availability.

Halar covered shaft assemblySharpe Mixers offers a wide variety of coating options to meet our customer’s requirements for corrosion or abrasion resistant shaft/impeller assemblies.  Some examples of available coatings are Halar, Kynar, Teflon, PVC, and both natural and synthetic rubbers of many different varieties. Most customers know which coatings have the best corrosion or abrasion resistance to their products and have specific coating requirements that are included with their request for quotation or specifications. If a customer is not sure which coating is appropriate for their application, Sharpe Mixers can provide information on the various coating options to assist the customer in determining the best selection.  Since coating usually requires that the impeller(s) be welded to the shaft, attention must be paid to the installation of the assembly into the tank.  Sharpe Mixers’ engineers can assist in determining if the tank’s man way is large enough to install the shaft/impeller assembly.  Attention must also be paid to obstructions around the tank that may make the installation difficult.  Sharpe Mixers guarantees that the coating provided meets the customer’s specifications and is free of defects.  In addition, we always takes special care to crate or package our coated shaft/impeller assemblies in such a manner as to avoid damage in shipment.  As with exotic alloys, the cost of coating a shaft/impeller assembly can vary greatly depending on the type and size of the equipment and the specific coating required for the application.  However, coatings can be a cost effective alternative to using an exotic alloy in many cases (especially for smaller mixers).  Coating typically adds two to four weeks to a normal fabrication schedule.

Pharmaceutical shaft assemblies polishedSharpe Mixers has the experience and expertise to meet the polishing requirements of the pharmaceutical, biotechnology and food industries as well as other applications in the chemical industry.  We offer a pre-engineered line of USDA approved portable mixers that include all welded shaft/impeller assemblies with a #4 polish (approximately 100 grit) standard.  Sharpe Mixers has the ability to polish shafts, impellers, mounting surfaces to below 5 Ra (microinch).  The pharmaceutical and biotechnology industries the typically require a finish in the 15 Ra to 25 Ra range.  The polishing is done without rouge or buffing compounds that may contaminate the customer’s product.  Sharpe Mixers also has the equipment to test the surface roughness to assure that the customer’s polishing specifications have been met.  Polishing can add significant cost to a mixer due to the labor intensive nature of the process.  Customers are encouraged to give careful consideration to the degree of polishing necessary versus the addition costs required to reach the finer levels of surface finish.  Sharpe Mixers takes great care in the handling of all polished components to avoid damage to the surface finish and has developed special packaging and crating to minimize the possibility of damage during shipment. Polishing typically adds three to four weeks to a normal fabrication schedule.

Polished H-C276 propSharpe Mixers also offers electropolishing for almost all mixer components, either in addition to the mechanical polish or as an option for unpolished components.  Electropolishing is an electrolitic process that removes a small amount of metal and virtually all contamination from metal surfaces.  It leaves the surface with a bright, reflective surface.  After electropolishing, the components are thoroughly rinsed with deionized water to remove any chemical residue from the electropolishing process.  Additional information on electropolishing can be provided upon request.  Electropolishing typically adds one to two weeks to a normal fabrication schedule (in addition to the mechanical polish if required).

Polish scale