CN111279010B - 用于制备活塞环的方法 - Google Patents
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Abstract
用于制备由钢或铸钢组成的活塞环的方法，通过如下进行：提供基体，所述基体包含工作面、内周向面、上侧壁区和下侧壁区以及所述工作面向相应的侧壁区中的过渡区，用第一铬层覆盖所述工作面、包括所述过渡区，将所述第一铬层在所述工作面的区域中削除至所述基体的基础材料，使至少无覆层的基体的工作面设置有氮化层并且最终用至少一个另外的铬层覆盖所述工作面以及所述过渡区。
Description
本发明涉及一种用于制备由钢或铸钢组成的活塞环的方法。
在由钢或铸钢形成的活塞环处可以通过热处理过程在氮气氛下产生耐磨的氮化层，由于工艺而造成所述氮化层出现在活塞环的所有自由表面处。与具有铬化工作面的未氮化的钢或铸钢基础材料相比，后续铬化的经氮化表面且尤其经氮化边缘被评价为对断裂和撕裂更敏感。
DE 10 2006 003 480 B3公开了一种活塞环，所述活塞环具有工作面、上侧壁、下侧壁以及内周向面，其中上侧壁至少部分朝向内周向面梯形地变窄并且下侧壁设置有通过氮化产生的表面层，设计为使得上侧壁的梯形区域形成为无氮化层，其中通过匹配氮化层厚度产生了在工作状态下一定程度的扭转。在设置有氮化层的工作面上施加耐磨损的工作面涂层，所述涂层通过电镀、化学或物理沉积产生。
DE 10 2011 014 483 B3提供了一种用于制备设置有耐磨层的腔式钢活塞环，其中产生工作面侧设有腔室的基体，将其在工作面中在基体侧壁的过渡区进行加工，以产生棱角，所述工作面以及至少棱角的一部分设置有耐磨层，将基体的未设置有耐磨层的周围区和侧壁区进行氮化，从而在侧壁的棱角侧区留下限定宽度的区段，该区段不具有氮化层，并且最后至少将耐磨层削除，使得在工作面中在侧壁的过渡区产生基本上锋利的然而未氮化的功能角。
本发明的基本目的在于，提供一种制备由钢或铸钢组成的活塞环的替代方法，通过所述方法可以基本上避免在工作面与侧壁区之间的过渡区中的断裂和撕裂。
此外，本发明的目的在于，提出一种活塞环，所述活塞环具有在工作状态中优化的断裂和撕裂行为，尤其在工作面向相应侧壁面的过渡区中。
这个目的通过独立权利要求1的条件实现。
本发明方法的有利的改进方式可由关于方法的从属权利要求获得。
这个目的还通过一种根据本发明方法制备的活塞环来实现。
本发明活塞环的有利的改进方式可由关于产品的从属权利要求获得。
通过本发明的方法，即通过在工作面与相应的侧壁区之间形成无氮化层的过渡区，产生了在这些区域中对断裂和撕裂不敏感的活塞环。
电镀施加的第一铬层有利地形成为具有最大15μm的层厚度。在削除工作面上的这个层之后，从现在无覆层的工作面向相应侧壁区的过渡区中的层保持不变。
根据本发明的另一个构思，氮化层既可以施加到工作面(除了过渡区)上也可以施加到这两个侧壁区中的至少一个侧壁区上、有利地施加到这两个侧壁区上。氮化层具有优选>0至30μm的层厚度。
以介于5与20μm之间的层厚度来电镀地形成至少一个最终的铬层。
因此，提供了一种活塞环，所述活塞环在成品状态下至少在工作面侧具有氮化层，在所述氮化层上沉积有铬层，其中设置有第一铬层的过渡区设置为无氮化层。
本发明主题借助于实施例在附图中展示并且如下进行说明。在附图中：
图1至3示出活塞环(基体)的原理简图；
图4至8示出活塞环的制备方法的原理简图。
图1至3示出分别包含基体1'、2'、3'的活塞环1、2、3的原理简图。
图1示出基体1'，所述基体形成为矩形环，包含工作面4、内周向面5、上侧壁区6以及下侧壁区7。在此例中，从工作面4向相应侧壁区6、7的过渡区8、9形成为修圆的，但是根据需求也可以圆锥形地延伸。
图2示出形成为单侧梯形环的基体2'，所述基体除了上侧壁6之外都类似于权利要求1来形成。上侧壁6从工作面4开始朝向内周向面5变窄。
图3示出形成为双梯形环的基体3'，其中除了上侧壁区6之外，下侧壁区7也从工作面4开始朝向内周向面5变窄。
根据需求还可以制备具有其他类型横截面的基体。
图4仅示出根据图1的基体1'。强调的是修圆的过渡区8、9。
图5至8示出本发明的制备方法，所述制备方法在此例中针对根据图1的基体1'。
在第一制造步骤(图5)中，用具有10μm的层厚度的第一铬层10来覆盖工作面4以及从工作面4到相应侧壁区6、7的过渡区8、9。
在第二制造步骤中，仅在工作面4的区域中通过适当的工具将铬层10削除到基体1'的基础材料(图6)，使得仅在过渡区8、9中保留原始的铬层10。
从图7可以看出，基体1'的工作面4设置有厚度为10μm的氮化层11，其中过渡区8、9及仍然位于其上的铬层10保持没有氮化层。
图8示出最终的制造步骤，即，向工作面4及氮化层11以及在过渡区8、9中设置的铬层部分上电镀沉积具有15μm的层厚度的另一个铬层12。
如此制成的活塞环可以用作压缩活塞环，例如在内燃机领域中。通过尤其在工作面4向相应侧壁区6、7的过渡区8、9中的针对性的层构造，可以避免在工作状态下在这些过渡区8、9中的断裂和撕裂。
在图8中还显示，侧壁区6、7以及内周向面5设置有额外的环绕的氮化层13，其中氮化层13在进入相应的过渡区8、9之前终止。
Claims (6)
1.用于制备由钢或铸钢组成的活塞环(1，2，3)的方法，通过如下进行：提供基体(1'，2'，3')，所述基体包含工作面(4)、内周向面(5)、上侧壁区(6)和下侧壁区(7)以及所述工作面(4)向相应的侧壁区(6，7)中的过渡区(8，9)，用第一铬层(10)覆盖所述工作面(4)、包括所述过渡区(8，9)，将所述第一铬层(10)在所述工作面(4)的区域中削除至所述基体(1'，2'，3')的基础材料，至少使无覆层的基体(1'，2'，3')的工作面(4)设置有氮化层(11)并且最终用至少一个另外的铬层(12)覆盖所述工作面(4)以及所述过渡区(8，9)，其中所述第一铬层(10)以最大15μm的层厚度形成，所述氮化层(11)具有>0至30μm的层厚度。
2.根据权利要求1所述的方法，其特征在于，除了所述工作面(4)之外，至少还将所述氮化层(11)施加到所述上侧壁区(6)和下侧壁区(7)之一上。
3.根据权利要求2所述的方法，其特征在于，将所述氮化层(11)施加到所述上侧壁区(6)和下侧壁区(7)这两者上。
4.根据权利要求1至3之一所述的方法，其特征在于，所述另外的铬层(12)以介于5与20μm之间的层厚度形成。
5.活塞环，其按照根据权利要求1至4之一所述的方法制造，其中所述活塞环(1，2，3)在成品状态下至少在工作面侧具有氮化层(11)，在所述氮化层上沉积有铬层(12)，其中设置有第一铬层(10)的所述过渡区(8,9)设置为无氮化层。
6.根据权利要求5所述的活塞环，其能够用作压缩活塞环。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017007000.8 | 2017-07-26 | ||
| DE102017007000.8A DE102017007000B3 (de) | 2017-07-26 | 2017-07-26 | Verfahren zur Herstellung eines Kolbenrings |
| PCT/DE2018/100643 WO2019020143A1 (de) | 2017-07-26 | 2018-07-13 | Verfahren zur herstellung eines kolbenrings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111279010A CN111279010A (zh) | 2020-06-12 |
| CN111279010B true CN111279010B (zh) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880032752.2A Expired - Fee Related CN111279010B (zh) | 2017-07-26 | 2018-07-13 | 用于制备活塞环的方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11060609B2 (zh) |
| CN (1) | CN111279010B (zh) |
| DE (1) | DE102017007000B3 (zh) |
| WO (1) | WO2019020143A1 (zh) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221800B4 (de) * | 2002-05-15 | 2005-04-07 | Federal-Mogul Burscheid Gmbh | Verfahren zur Erzeugung von Verschleißschichten an Strahlkolbenringen |
| DE102006003480B3 (de) | 2006-01-25 | 2007-07-05 | Federal-Mogul Burscheid Gmbh | Kolbenring |
| DE102007037778A1 (de) * | 2007-08-10 | 2009-02-12 | Mahle International Gmbh | Hartchromschicht, beschichtetes Substrat und tribologisches System |
| JP5545774B2 (ja) * | 2009-12-08 | 2014-07-09 | 株式会社リケン | ピストンリング及びピストン装置 |
| DE102011014483B3 (de) | 2011-03-19 | 2012-05-10 | Federal-Mogul Burscheid Gmbh | Verfahren zur Herstellung von Kolbenringen |
| DE102012204156A1 (de) * | 2012-03-16 | 2013-09-19 | Federal-Mogul Burscheid Gmbh | Kolbenring mit Chrom-Feststoffpartikel-Verschleißschutzschicht und korrosionsbeständiger Flankenfläche |
| BR102014004402B1 (pt) | 2014-02-25 | 2022-08-09 | Mahle Metal Leve S/A | Anel de pistão e seu processo de fabricação |
| US10428945B2 (en) * | 2015-10-16 | 2019-10-01 | Mahle International Gmbh | Inlaid ring with plated lateral side |
-
2017
- 2017-07-26 DE DE102017007000.8A patent/DE102017007000B3/de not_active Expired - Fee Related
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2018
- 2018-07-13 US US16/610,747 patent/US11060609B2/en active Active
- 2018-07-13 CN CN201880032752.2A patent/CN111279010B/zh not_active Expired - Fee Related
- 2018-07-13 WO PCT/DE2018/100643 patent/WO2019020143A1/de active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017007000B3 (de) | 2019-01-03 |
| US11060609B2 (en) | 2021-07-13 |
| CN111279010A (zh) | 2020-06-12 |
| US20200141492A1 (en) | 2020-05-07 |
| WO2019020143A1 (de) | 2019-01-31 |
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