NANOSLIDE TECHNOLOGY.

Discussion in 'Engine' started by grober, Nov 14, 2019.

  1. grober

    grober MB Club Veteran

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    This bore coating process is finding increasing use thro-out the Mercedes engine range with alloy blocks.Originally used in AMG engines its now finding a wider use. What implication it has for engine life and possible reconditioning in the event of failure remains unclear but a coating 0.1 to 0.15 millimetres seems pretty thin!
    Friction losses minimised by NANOSLIDE technology: Mercedes-Benz innovation: NANOSLIDE for lower consumption | marsMediaSite
    Here's one example of the technique in action.
     
  2. ivan1983

    ivan1983 Hardcore MB Enthusiast

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    The cynic in me thinks it will be n good for the warranty period + a little safety margin.

    Although if it's been used in the AMGs for a while I guess any longevity issues would have shown up by now?
     
  3. 190

    190 Hardcore MB Enthusiast

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    It sounds similar although perhaps not the same method of application as Nikasil and other coatings which have been around for 50 years. In a perfect world these coatings direct on alloy cylinder bores last for the life of the engine and many do. I know that BMW has been doing it since 81 but there have been problems with some VW and Toyota engines to name only two, where the coating has broken down resulting in horrendous oil consumption. It's then a specialist job to put right which may write off a low value car. My son has managed to have two cars with this problem. So good as it is, I was rather pleased that my M271 has iron liners which if low tech are at least reliable and one less thing to worry about. Not as if there isn't already enough to worry about with a M271.
     
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    grober

    grober MB Club Veteran

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    It may be helpful at this point to link to the 2 previous cylinder coating processes asssociated with linerless aluminium block engines Nikasil and Alusil.
    Nikasil - Wikipedia
    and
    Alusil - Wikipedia

    Where this new spray plasma technique may score I suspect is the ease with which it can be automated thus reducing manufacturing time/cost?
     
  5. NOMONEYBUTAMERC

    NOMONEYBUTAMERC Hardcore MB Enthusiast

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    And there`s me thinking a Nanoslide was to be found in the local park for grandmothers to play on......……………………………….
     
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    grober

    grober MB Club Veteran

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    grober

    grober MB Club Veteran

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    Found elsewhere
    Daimler started development of the coating technology with small, series production of AMG engines, including the 6.3-liter V8. Since 2006, it has treated more than 80,000 engines. The company has recently partnered with Germany’s Gebr. Heller Maschinenfabrik GmbH, which has developed the Heller Cylinder Bore Coating (CBC) system for automated, Nanoslide cylinder bore coating, machining and inspection in high-production applications.
    With that in mind here's video of what I assume is their dual wire arc spraying machine used on a 4 cylinder block.


    and a section on the pre-coating activation phase which involves "mechanical roughening"


    (PDF) NANOSLIDE® process chain: Best practice cases from producing companies
     
    Last edited: Nov 15, 2019
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    grober

    grober MB Club Veteran

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    [​IMG]
    [​IMG]

    The technology uses a twin-wire arc spraying process to continuously melt iron/carbon wires and spray them onto the cylinder surfaces of the lightweight aluminum crankcase with the help of a nitrogen gas flow. The technology improves the cylinder bore surfaces, reducing wear and promoting long-life. Spray particle velocity is 60-80 m/s and spray particle temperature is up to 2,000 degrees C.
    The CBC machining process at HELLER includes fine boring, roughening, coating, rough honing, finish honing to expose pores, finish machining-all accomplished in the HELLER MC20 machining center. Total cycle time, including part load/unload, for an 8-cylinder engine is five to six minutes. The engine blocks may be direct-loaded into the machining center or mounted on a swiveling exchanger. A key contribution of HELLER to the process is to fine-bore the arc-sprayed cylinder coating to impart a final finish.
    The applied coating is measured with a Jenoptik IPS 100 bore inspection sensor system which provides in a rapid, single pass automatic surface inspection of bores from 75-110 mm diameter, instantly providing a 360-degree panoramic view. The sensor permits detection of surface defects such as blow holes, scratches, porosities on bores from 75 mm to 110 mm diameter, to any depth. Utilizing state-of-the-art CMOS imaging technology, the IPS 100 continuously scans the bore surface at high speed, creating a viewable image of the bore interior.
     
    Last edited: Nov 15, 2019
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    grober

    grober MB Club Veteran

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    Hopefully other forum members are a little wiser about Mercedes NANOSLIDE TECHNOLOGY now- I know I am!;)
     
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