润滑科技信息平台

具有减摩表面的硬密封环、减摩密封装置及制造方法

专利摘要

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基本信息

专利类型:
发明专利
申请/专利号:
EP2023709135
申请日期:
2023-02-28
专利申请人:
分类号:
["F16J15/34","B33Y80/00"]
发明/设计人:
MATZ, MARC-MANUEL ， LEE HAMILTON, JEFFREY
权利要求: 1. Hard sealing ring, comprising an annular body (2, 2'), which has a basic shape that is rotationally symmetrical with respect to an axis (A), wherein - in a cross (Q) lying in the direction of the axis (A), the annular body has a contact portion (3), which is arranged on an end face of the annular body (2, 2'), wherein the contact portion (3) faces outwards in the direction of the axis (A), and wherein - in the cross (Q), the annular body (2, 2') has a trough portion (5), which is arranged on a radial lateral surface of the annular body (2, 2') and lies facing away from the contact portion (3) in relation to the direction of the axis (A) wherein - the annular body (2, 2') has an anti-friction coating (8) on the contact portion (3), - characterized in that - the annular body (2) is produced by shaping from a cut-to-length starting material, which is bent into the shape of a ring and joined at the ends.2. Hard sealing ring according to Claim 1, wherein, in the cross (Q), the annular body (2, 2') has a cavity (14), which lies facing away from the contact portion (3) on the one hand and facing away from the trough portion (5) on the other hand, and wherein the annular body (2, 2') has particularly along the circumferential direction (U) one or more openings (23, 24), which open out into the cavity (14).3. Hard sealing ring according to one of the preceding claims, wherein, in the cross (Q), the annular body (2, 2') has a collar (13) on the trough portion (5), towards the side of the contact portion (3), and wherein a protective coating (25) is provided on the annular body (2, 2'), in a radial surface portion lying between the trough portion (5) on the one hand and the contact portion (3) on the other hand, particularly on a radial circumferential surface of the collar (13).4. Hard sealing ring according to one of the preceding claims, wherein the anti-friction coating (8) has at least one graded coating layer with an inhomogeneous material structure.5. Hard sealing ring according to one of the preceding claims, wherein the annular body (2, 2') - is formed from a metal material; AND/OR - is formed from a plastic; AND/OR - is formed from a composite material, particularly comprising a fibre composite, more particularly produced by a moulding composite-forming process.6. Hard sealing ring according to one of the preceding claims, wherein the anti-friction coating (8) is formed as multilayered and has particularly two or more coating layers (9, 10), which are overlaid in the direction of the axis (A).7. Hard sealing ring according to the preceding claim, wherein the anti-friction coating (8) comprises a wear-resistant permanent sliding layer (11), and wherein the permanent sliding layer (11) has particularly - a hardness of at least 400 HV (Vickers hardness), more particularly more than 600 HV, and/or - is formed by a metal-matrix composite, which comprises a binding matrix with incorporated hard particles; and/or - contains an additional self-lubricant, particularly comprising at least one of the following substances or a combination thereof: • molybdenum; • copper; • boron; • molybdenum sulfide; • bronze; • brass; • graphite; • boron nitride (particularly hexagonal boron nitride) • PTFE.8. Hard sealing ring according to the preceding Claim 6, wherein the anti-friction coating (8) comprises a separate running-in layer (12), and wherein the running-in layer (12) comprises particularly - graphite or a soft metal such as lead, copper, zinc, tin or aluminium in pure form or as an alloy; AND/OR - graphite or a soft metal such as lead, copper, zinc, tin or aluminium in a metal matrix.9. Hard sealing ring according to Claim 2, wherein a filler (15) is arranged in the cavity (14), wherein the filler (14) is particularly - a separate body made of the base material of the annular body, AND/OR - comprises a different material than the base material of the annular body, particularly a material with a lower surface hardness and/or a material with a higher thermal conductivity, and/or a material that locally changes the stiffness; AND/OR - comprises a 3D supporting contour, which is formed particularly in a mouldless production process or by an additive manufacturing method, AND/OR - comprises an active body, particularly a sensor or an actuator.10. Hard sealing ring according to one of the preceding claims, wherein on the radial lateral surface of the annular body (2, 2'), particularly in the region of the trough portion (5), there are surface portions (27, 28) adjacent to one another in the axial direction (A) with different adhesion-promoting effects.11. Anti-friction sealing device comprising at least a first hard sealing ring (61) and a second hard sealing ring (62), each of which has a contact portion (3), wherein, in the intended mounting position, the hard sealing rings (61, 62) are arranged along the axis (A) so as to be mutually adjacent and coaxial to one another, such that the contact portions (3) peripherally touch, characterized in that at least one of the hard sealing rings (61, 62) is formed according to Claim 1.12. Anti-friction sealing device according to the preceding claim, wherein the anti-friction sealing device (60) also comprises at least one soft sealing ring (63, 64), wherein the soft sealing ring (63, 64) has particularly a circumferential-line marking (66), which in an undeformed state of the soft sealing ring (63, 64) is identifiable as a circular line on the outer surface.13. Production method for producing a hard sealing ring according to Claim 1, wherein the production method comprises the following steps: - providing a semifinished product (40) of an elongated or straight extent, wherein the semifinished product (40) is particularly a flat material or a pre-profiled material; - shaping, particularly roll-forming, more particularly roll-stamping, the semifinished product (40) and forming a preliminary product (44) in the shape of an open ring; - connecting the ends (45) of the preliminary product (44) to form an annular body (2) with a rotationally symmetrical basic shape in relation to an axis (A) and a closed circumference (U).14. Production method according to the preceding claim, wherein the hard sealing ring has an anti-friction coating (8) on the contact portion (3) of the annular body (2), and wherein particularly - the semifinished product (40) has a body region which forms the contact portion (3) on the annular body (2), and wherein at least a first coating layer (9) for an anti-friction coating (8) is already provided on or is applied to the body portion of the semifinished product (40) before the forming of the annular body (2); and - a further coating layer (10), particularly a running-in layer (12), is applied so as to overlay the first coating layer (9).15. Production method according to the preceding claim, wherein at least one of the coating layers (9, 10) is applied by one of the following methods: - thermal spraying, particularly; • high-velocity oxy-fuel spraying; • arc wire spraying; • plasma spraying; - laser alloying; - build-up welding, particularly by means of a laser or an arc; - vapour phase deposition, particularly • physical vapour deposition; • chemical vapour deposition.