<p style="margin-top: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252); text-align: center;"><b>发布时间：2025年2月27日 NACHI</b></p><p style="margin-top: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">【NACHI航空发动机轴承滑蹭损伤机理与防治技术】</strong><br/><strong style="color: rgba(0, 0, 0, 0.9); font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; text-align: center; text-wrap-mode: wrap;">NACHI</strong>航空发动机主轴轴承在极端工况（转速2万转/分、温度600℃）下运行时，滚动体与滚道间的异常滑动摩擦会引发滑蹭损伤，造成材料微熔、转移和剥落，严重威胁飞行安全。本文从损伤机制、监测手段和防护技术三方面展开分析。</p><p style="margin: var(--yb-md-content-gap-main); padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">【损伤机制】</strong><br/>滑蹭损伤本质是滚动体与滚道接触区形成“黏着-撕裂”的恶性循环。当局部摩擦热超过材料耐温极限（镍基合金约800℃）时，表层材料发生相变软化，在离心力作用下形成微裂纹并扩展。研究表明，振动超标（＞4mm/s）、润滑膜厚度不足（＜0.1μm）及轴向预紧力偏差（＞15%）是三大诱因。</p><p style="margin: var(--yb-md-content-gap-main); padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">【动态监测技术】</strong><br/>在线监测系统通过多传感器融合实现早期预警：</p><ol style="margin-left: 2em; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; list-style-position: initial; list-style-image: initial; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);" class=" list-paddingleft-2"><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">声发射技术</strong>：捕捉30-150kHz高频应力波，识别微观裂纹萌生；</p></li><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">油液光谱分析</strong>：检测Fe、Cr元素浓度突变（＞50ppm预示严重磨损）；</p></li><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">红外热成像</strong>：定位温度异常区域（温差＞50℃需紧急排查）。</p></li></ol><p style="margin: var(--yb-md-content-gap-main); padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">【综合防治措施】</strong></p><ol style="margin-left: 2em; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; list-style-position: initial; list-style-image: initial; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);" class=" list-paddingleft-2"><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">材料升级</strong>：采用ZrO₂陶瓷涂层轴承，摩擦系数降至0.08（传统合金0.15）；</p></li><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">表面织构</strong>：激光加工微凹坑（直径50μm，深10μm），油膜保持能力提升60%；</p></li><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">弹性支承</strong>：金属橡胶隔振器降低振动幅值40%；</p></li><li><p><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline;">智能润滑</strong>：压电喷射阀实现润滑油精准供给（误差±0.5μL/s）。</p></li></ol><p style="margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-stretch: inherit; line-height: inherit; font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; word-break: break-word; overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); text-wrap-mode: wrap; background-color: rgb(252, 252, 252);">当前技术迭代使轴承寿命突破5000小时，但高熵合金涂层、数字孪生预警系统等新技术仍在验证中。未来需在材料-结构-控制多维度协同创新，方能满足第六代航空发动机的严苛要求。</p><p><br/></p>