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1. 发明授权

US5304262A Two-piece oil ring for use in internal combustion engine, steel wire of modified cross-section for use as material of the oil ring and method of producing the steel wire 失效
标题翻译：用于内燃机的两片式油环，用作油环材料的改性横截面钢丝及其制造方法
公开(公告)号：US5304262A
公开(公告)日：1994-04-19
申请号：US822209
申请日：1992-01-17
申请人： Takao Karaoke , Ken Nakamura , Iwao Kashiwagi
发明人： Takao Karaoke , Ken Nakamura , Iwao Kashiwagi
IPC分类号： B21B1/08 , B21B1/16 , B21B3/02 , B21C37/04 , B21D28/24 , B23P15/06 , C21D8/06 , F16J9/20 , C21D8/00 , C22C38/18
CPC分类号： C21D8/065 , B21B1/166 , B21C37/04 , B21D28/243 , B23P15/065 , F16J9/20 , B21B1/088 , B21B3/02 , Y10S277/924 , Y10S277/94 , Y10T29/49279 , Y10T29/49281
摘要： A two-piece oil ring, for use in an internal combustion engine, with the oil ring being made from a martensitic stainless steel material having high consisting essentially of more than 0.8 wt % but less than 0.95 wt % of C, not more than 1.0 wt % of Si, not more than 1.0 wt % of Mn, from 15.0 wt % to 20.0 wt % of Cr and a balance substantially Fe and incidental impurities. The oil ring has a hardness ranging from HV300 to HV450 and a substantially H- or X-shaped cross-section. A web portion interconnecting left and right halves of the H- or X-shaped cross-section has a thickness not greater than 0.3 in terms of the ratio of the total thickness of the ring. Oil passage holes are formed in the web portion. A nitrided layer is formed on the sliding surface thereof which makes a sliding contact with the inner surface of a cylinder of the engine. The material may further contain suitable amounts of at least one of Mo, W, V, Nb, Ni and Co. The oil ring is produced by bending a wire of the martensitic stainless steel material by a process including warm roll dies plastic working and a subsequent cold roll dies plastic working through which a modified cross-section is imparted to the material, continuous annealing, punching for forming oil passage holes by punching, and continuous hardening and tempering.
摘要翻译：一种用于内燃机的两片式油环，油环由马氏体不锈钢材料制成，该材料具有基本上大于0.8重量％但小于0.95重量％的C，不大于1.0 重量％的Si，不大于1.0重量％的Mn，15.0重量％至20.0重量％的Cr，余量基本上为Fe和附带的杂质。油环的硬度范围为HV300至HV450，基本为H或X形横截面。将H或X形横截面的左半部和右半部互连的腹板部分的厚度以环的总厚度的比例计不大于0.3。在纸幅部分中形成油通道孔。在其滑动表面上形成氮化层，其与发动机的气缸的内表面滑动接触。该材料可以进一步包含适量的Mo，W，V，Nb，Ni和Co中的至少一种。该油环是通过将热轧模具塑料加工和随后的冷轧模具通过塑料加工，通过该工件向材料赋予改进的横截面，连续退火，通过冲压形成油通道孔的冲压，以及连续淬火和回火。

2. 发明授权

US06901782B2 Method and apparatus for forming a modified a cross-section wire material 有权
标题翻译：用于形成改进的横截面线材的方法和装置
公开(公告)号：US06901782B2
公开(公告)日：2005-06-07
申请号：US10310810
申请日：2002-12-06
申请人： Takao Mikami , Yoshiki Masugata , Takao Karaoke
发明人： Takao Mikami , Yoshiki Masugata , Takao Karaoke
IPC分类号： B21B1/08 , B21B1/16 , B21B1/18 , B21B13/10 , B21B15/00 , B21B27/02 , B21C3/08 , B21C37/04
CPC分类号： B21C37/045 , B21B1/088 , B21B1/16 , B21B1/166 , B21B1/18 , B21B13/103 , B21B27/02 , B21B2013/106 , B21B2015/0028 , B21C3/08 , Y10T29/49274
摘要： A modified cross-section wire material is formed into piston rings such as oil-control rings for use in an engine. An apparatus of the present invention for forming the modified cross-section wire material has a forming unit (15) comprising in combination a non-powered pre-stage four-roll turks-head (16) and a powered post-staged four-roll turks-head (17). Disposed in tandem and downstream of the forming unit (15) is a non-powered finishing four-roll turks-head (21). A forming roll of the powered turks-head (17) has a diameter equal to or larger than 70 times as much as a height-of a flange of the material. In forming, the material is kept at a tension equal to or less than 300 N between the non-powered turks-head stand (16) and the powered turks-head (17), and at a tension of from 50 to 200 N between the forming unit (15) and the finishing turks-head (21).
摘要翻译：改进的横截面线材形成为用于发动机的诸如油控制环的活塞环。本发明的用于形成改进的横截面线材的装置具有一个成形单元（15），其组合有非动力的前级四辊土耳其头（16）和一个动力的后阶段四辊土耳其头（17）。在成形单元（15）的串联和下游布置的是非动力整理四辊土耳其头（21）。所述动力头皮头（17）的成形辊的直径等于或大于所述材料的凸缘的高度的70倍。在成形时，材料在非动力头盔架（16）和动力头皮头（17）之间保持在等于或小于300N的张力，并且在50至200N之间的张力在成形单元（15）和精整土耳其头（21）。

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