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添加时间:2012-12-17 11:32:41       浏览次数:380
  详细信息

Technical Data Sheet

Shell Corena AS

Advanced synthetic air compressor lubricants

Shell Corena AS is an advanced air compressor lubricant using specialized additive technology,
capable   of   giving   outstanding   performance   in   oil-flooded   air compressors   of   screw   or   vane
design.   Based   on   specially   selected   PAO   base   fluids,   Corena   AS   provides   long   oil   life   and
effective lubrication in severe applications.

Applications                                                              Corena   AS  resists   the   formation   of   carbon   deposits
                                                                          and   the   formation   of   sludge   in   all   moving   parts   of
*  Rotary sliding vane and screw air compressors                          sliding    vane    and    screw    compressors     to  ensure
    Oil-flooded     single  and    two-stage    compressors,    in        maximum        output   of  the  machine     throughout    the
    particular   those   operating   with   output   pressures   of       service interval.
    greater than 20 bar (290 psi) and with air discharge
    temperatures greater than  100°C (212 °F) (including
    intermittent operation under these conditions).
                                                                       *  Very good rusting and wear protection
*  Equipment running under severe conditions                              Effectively protects all metal surfaces from corrosion.
    May also be used where exceptionally high ambient                     Protects sensitive machinery parts, e.g. gears, screws,
    temperatures   are   found,   when   the   oil   temperature          bearings, from wear and helps to prolong the service
    cannot be reduced to normal levels.                                   intervals.

*  ABB Turbochargers                                                   *  Excellent low volatility characteristics
    The    product     is  recommended       for   use   in   ABB         Low volatility giving low oil consumption and low oil
    turbochargers fitted to low and medium speed diesel                   carry over. The top up rates are low.
    engines     used    in  marine    and    power   generation
    applications.                                                      *  Very good surface properties
Advice on applications not covered in this leaflet may be                 Resulting in

a low foaming tendency, very good air
obtained from your Shell representative.                                  release and water shedding properties. This helps to
                                                                          separate      oil  from  air   and     water   in   two-stage
                                                                          compressor      intercoolers,   oil/water    separators   and
                                                                          drier units.
Performance Features and Benefits
                                                                       *  Extended oil drain intervals
*  Excellent thermal stability                                            Corena AS will allow for significant increases in oil
    Corena      AS    helps    reduce    sludge    and    deposit         drain intervals, where allowed by manufacturers - up
    formation from thermal degradation processes, even                    to    a   maximum       of  12,000     hours,    even    when
    at   very  high   temperatures,    helping   to     maintain          operating   at  a   continuous  maximum   discharge   air
    compressor efficiency.                                                temperature in excess of 100°C (212°F).

*  Excellent water shedding properties                                 *  High viscosity index
    The product is easily separated from water, helping                   Reduced       change     of   viscosity   with    change     in
    to   keep   the  system   in  good   condition  even    when          operating temperature in comparison to conventional
    contaminated with water.                                              mineral     oil-based    products.     This    provides    low

*  Outstanding resistance to oxidation                                    starting    viscosi

Technical Data Sheet

                                                                       Seal compatibility
Specifications and Approvals                                           Corena    AS    is   compatible    with   all sealing    materials
                                                                       commonly used in air compressors.

Shell Corena AS meets the requirements of: ISO 6743-
3A-DAJ.  Corena AS 68 is approved by ABB for use in                    Health & Safety

VTR turbochargers, with a maximum oil change interval                  Guidance   on   Health   and   Safety   are   available   on   the
of 5000 hours (HZTL 90617, list 3).                                    appropriate  Material   Safety   Data   Sheet,   which   can  be
                                                                       obtained from your Shell representative.

Miscibility
Corena   AS   is   fully   miscible with   mineral   oils,   although  Protect the environment
dilution with  mineral lubricants will markedly reduce its             Take used oil to an authorized collection point.          Do not
performance.  Care must be taken to ensure that Corena                 discharge         into     drains,        soil     or       water.

AS    is  not  mixed    with  some    type  of  synthetic   fluids.
Contact your Shell Representative for further information

Typical Physical Characteristics

                                                                                               Shell Corena AS
                                          Unit            Method                  32                  46                  68
 Product Codes                                                     Drum       5070687              5070688             5070689
                                                                     Pail     5070691              5070692             5073760
 ISO Viscosity Grade                                     ISO 3448                 32                  46                  68
 Kinematic Viscosity                                    ASTM D445
        at  40°C (104 °F)                mm2/s                                    32                  46                  68
        at 100°C (212 °F)                mm2/s                                    6.0                 7.7                 10.4
 Density at 15 °C (59 °F)                g/mL          ASTM D1298               0.843               0.843                0.846
 Flash point (COC)                       °C (°F)       

ASTM D92              230 (446)           235 (455)           258 (496)
 Pour Point                              °C (°F)        ASTM D97               -50 (-58)          <-45 (-49)          <-45 (-49)
 Viscosity Index (VI)                                  DIN ISO 2909              135                  135                 139
 Rust prevention properties                           ASTM D665-B                pass                pass                pass
 Water separability                        min         ASTM D1401                 10                  10                   10
 Rotating Pressure Vessel
 Oxidation Test                           min          ASTM D2272                2200                2200                2200
                                      failure load
 FZG load carrying test                  stage        CEC-L-07-A-95                12                >12                 >12
These characteristics are typical of current production.  While future production will conform to Shell’s  specifications,
variations in these characteristics may occur.

 

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