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    Method for coating the nose of the cams of a camshaft with DLC, camshaft obtained in this way and facility for implementing said method
    12.
    发明授权
    Method for coating the nose of the cams of a camshaft with DLC, camshaft obtained in this way and facility for implementing said method 有权

    公开(公告)号：US10683777B2

    公开(公告)日：2020-06-16

    申请号：US15319644

    申请日：2015-06-10

    Applicant: H.E.F.

    Inventor： Sandrine Henry ,  Christophe Heau

    IPC: F01L1/16 ,  F01L1/047 ,  F16H53/02 ,  C23C16/02 ,  C23C16/04 ,  C23C16/26

    Abstract: A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean the cams, bringing the support into relative movement along a trajectory of travel relative to a coating source, and taking the cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which is defined in such a way that the cams are brought successively opposite the source with orientations and at distances substantially identical relative to the source, to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.

    GUIDING MEMBER IN THE FORM OF A METAL RING FOR ASSEMBLY WITH FRICTION AND WITH THE ARTICULATING AND/OR SLIDING CAPABILITY OF A SHAFT
    15.
    发明申请
    GUIDING MEMBER IN THE FORM OF A METAL RING FOR ASSEMBLY WITH FRICTION AND WITH THE ARTICULATING AND/OR SLIDING CAPABILITY OF A SHAFT 审中-公开
    指导成员以金属圈形式组装摩擦组合，并具有轴的曲线和/或滑动能力

    公开(公告)号：US20150307801A1

    公开(公告)日：2015-10-29

    申请号：US14649410

    申请日：2013-12-06

    Applicant: H.E.F.

    Inventor： Patrick VILLEMAGNE ,  Georges GODARD

    IPC: C10M107/38

    Abstract: The bore of the ring has workings suitable to act as a grease reserve at a friction area. A self-lubricating coating layer with a low wettability is applied to the entire surface of the bore, including in the workings suitable to act as a grease reserve, such that after wearing of the layer of self-lubricating coating at the friction surface of the bore, the difference in wettability between the friction surface and the workings still having the coating layer, enables the grease to be drawn out of the workings in order to lubricate the friction area.

    Abstract translation: 环的孔具有适于在摩擦区域作为油脂储备的工作。 将具有低润湿性的自润滑涂层施加到孔的整个表面，包括在适于作为油脂储备的工作中，使得在摩擦表面上磨损自润滑涂层之后 摩擦面和仍具有涂层的工作之间的润湿性差异使润滑脂能够从工作中抽出以润滑摩擦区域。

    PISTON FOR A HEAT ENGINE, HEAT ENGINE COMPRISING SUCH A PISTON, AND METHODS
    18.
    发明申请
    PISTON FOR A HEAT ENGINE, HEAT ENGINE COMPRISING SUCH A PISTON, AND METHODS 有权

    公开(公告)号：US20210123395A1

    公开(公告)日：2021-04-29

    申请号：US16477232

    申请日：2018-01-10

    Applicant: H.E.F.

    Inventor： Fabrice PROST ,  Christophe HEAU ,  Romain MONTELIMARD

    IPC: F02F3/00 ,  F16J1/02 ,  F16J9/00

    Abstract: Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.

    Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating
    19.
    发明授权
    Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating 有权

    公开(公告)号：US10774414B2

    公开(公告)日：2020-09-15

    申请号：US15538005

    申请日：2015-12-15

    Applicant: H.E.F.

    Inventor： Pierre-Louis Magdinier ,  Marie-Noelle Desbouche-Janny

    IPC: C23C8/78 ,  C23C8/80 ,  C23C8/02 ,  C23C8/58 ,  C23C8/34 ,  C21D1/06

    Abstract: Disclosed is a method for surface treatment of a steel component, providing high resistance to wear and corrosion, including nitriding or nitrocarburising to form a compound layer with a thickness of at least 8 micrometers made up of iron nitrides having phases ε and/or γ′, oxidizing to generate a layer of oxides with a thickness of 0.1-3 micrometers, and soaking in an impregnation bath during at least 5 minutes at room temperature, the bath being made up of at least 70 wt %, ±1%, of a solvent made up of a mixture of hydrocarbons formed by a C9 to C17 alkane fraction, 10 to 30 wt %, ±1%, of at least one paraffin oil formed by a C16 to C32 alkane fraction, and at least one additive such as a synthetic phenolic additive with a concentration of 0.01 to 3 wt %, ±0.1%.

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