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href=\"https:\u002F\u002Fwww.outokumpu.com\u002Fen\u002Fexpertise\u002Fstainless-basics\u002Fcorrosion-resistance\" target=\"_blank\" rel=\"noopener noreferrer\">［1］\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>如果附近正在切割、打磨普通碳钢，飞散的铁屑可能落到门体上；与碳钢共用的工具、支架或磨具，也可能带入铁污染。这些外来铁颗粒遇到潮气后生锈，锈迹便出现在不锈钢表面。Euro Inox 的建筑金属资料将这类污染列为安装交付后锈斑问题的常见来源，并提醒去污时应去除残留的铁颗粒，不能将其擦散到其他位置。\u003Ca href=\"https:\u002F\u002Fworldstainless.org\u002Fwp-content\u002Fuploads\u002F2025\u002F02\u002FPassivating_Pickling_EN.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">［2］\u003C\u002Fa>\u003C\u002Fp>\n\u003Ch2>局部腐蚀与表面铁污染有什么区别\u003C\u002Fh2>\n\u003Cp>局部腐蚀意味着不锈钢本体已经受到侵蚀。点蚀会在局部形成蚀坑；缝隙腐蚀则可能发生在搭接、紧密连接或沉积物覆盖处。含氯环境会增加这两类腐蚀的风险。残留的铁颗粒还可能诱发不锈钢本体的局部腐蚀，因此发现污染后不宜长期放任。\u003Ca href=\"https:\u002F\u002Fwww.outokumpu.com\u002Fen\u002Fexpertise\u002Fstainless-basics\u002Fcorrosion-resistance\" target=\"_blank\" rel=\"noopener noreferrer\">［1］\u003C\u002Fa>\u003Ca href=\"https:\u002F\u002Fatlassteels.com.au\u002Fwp-content\u002Fuploads\u002F2021\u002F07\u002FAtlas-Tech-Note-No-5-Cleaning-Care-Maintenance-of-Stainless-Steels-17-06-21.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">［3］\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>门体各部位的局部环境也会影响判断。雨水冲不到、排水不畅、容易积盐积尘的位置，可能比同一扇门的其他部位更容易变色或腐蚀。澳大利亚不锈钢发展协会的资料特别指出，遮雨部位、积水位置及容易滞留污染物的表面需要关注。因此，“同一批材料只有局部出现锈斑”并不足以证明局部使用了不同材质。\u003Ca href=\"https:\u002F\u002Fwww.assda.asn.au\u002Fpublications\u002Ftechnical-faqs\u002Fpreventing-coastal-corrosion-tea-staining\" target=\"_blank\" rel=\"noopener noreferrer\">［4］\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>\u003Cimg src=\"https:\u002F\u002Fimg.shenzhenjianzhong.com\u002Fpublished\u002Fmedia\u002Fagent-articles\u002F520\u002F20261012\u002F179176588660040316\u002Farticle-520-a296b610a1a868e8.webp\" alt=\"外来铁颗粒附着与不锈钢本体局部腐蚀可能并存的剖面示意\" loading=\"lazy\" \u002F>\u003C\u002Fp>\u003Cp>表面铁污染与本体局部腐蚀示意，非按比例绘制；两种情况可能同时存在，不能仅凭外观定性。\u003C\u002Fp>\u003Ch2>现场可以看什么，哪些结论不能直接下\u003C\u002Fh2>\n\u003Cp>排查时，建议先拍摄锈斑的全貌及近照，记录锈斑位于门杆、连接处还是焊缝附近，并核对近期是否有碳钢施工、清洁剂接触或盐尘沉积。这些信息用于缩小检查范围，不能单独作为定性依据。\u003C\u002Fp>\n\u003Cp>按供应商认可的方法清洁后，如果露出蚀坑、凹陷，或同一位置反复出现锈斑，应请厂家或专业人员继续检查。擦掉锈色只能说明可见附着物有所减少，不能证明没有残留铁污染，更不能证明材料牌号合格。钝化膜重新形成也无法弥补已经发生的金属损失。\u003C\u002Fp>\n\u003Cp>需要确认污染来源时，可由专业人员选择适用的表面铁污染检测；若争议涉及材料是否符合采购要求，则应另行核对材质证明和批次，并开展必要的材料检验。污染检测与材质核验回答的是不同问题，不能相互替代。Euro Inox 指南介绍了可供专业人员选用的铁污染检测方法。\u003Ca href=\"https:\u002F\u002Fworldstainless.org\u002Fwp-content\u002Fuploads\u002F2025\u002F02\u002FPassivating_Pickling_EN.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">［2］\u003C\u002Fa>\u003C\u002Fp>\n\u003Ch2>发现锈斑后怎样处理更稳妥\u003C\u002Fh2>\n\u003Cp>普通裸露不锈钢表面的日常污物，可先按产品要求用温和清洁剂和软布清洁，再用清水去除残留并擦干；拉丝面应顺着纹路操作，清洁前先在不显眼处试用。这是初步清洁，不应当作所有锈斑的通用修复办法。彩色、涂层等特殊表面应先咨询供应商。\u003Ca href=\"https:\u002F\u002Fatlassteels.com.au\u002Fwp-content\u002Fuploads\u002F2021\u002F07\u002FAtlas-Tech-Note-No-5-Cleaning-Care-Maintenance-of-Stainless-Steels-17-06-21.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">［3］\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>\u003Cimg src=\"https:\u002F\u002Fimg.shenzhenjianzhong.com\u002Fpublished\u002Fmedia\u002Fagent-articles\u002F520\u002F20261012\u002F179176590631622197\u002Farticle-520-c926e364e7498926.webp\" alt=\"不锈钢门面使用软布、清水及适用温和清洁剂顺纹清洁示意\" loading=\"lazy\" \u002F>\u003C\u002Fp>\u003Cp>日常清洁先确认表面类型并遵循产品要求。温和清洁不能替代顽固污染或腐蚀的专业处理。\u003C\u002Fp>\u003Cp>不要用普通钢丝球或处理过碳钢的磨具反复擦磨，也不要用含盐酸的清洁剂或漂白剂尝试除锈。前者可能带入新的铁污染，后者可能损伤表面。顽固污染、焊接热变色及已形成的腐蚀，应由专业人员选择处理工艺。酸洗涉及危险化学品，还可能改变表面光泽，不适合自行调配药液处理。\u003Ca href=\"https:\u002F\u002Fwww.assda.asn.au\u002Fpublications\u002Ftechnical-faqs\u002Fcleaning-your-indoor-stainless-steel\" target=\"_blank\" rel=\"noopener noreferrer\">［5］\u003C\u002Fa>\u003Ca href=\"https:\u002F\u002Fwww.outokumpu.com\u002Fen\u002Fexpertise\u002Fstainless-basics\u002Fpost-fabrication-treatment\" target=\"_blank\" rel=\"noopener noreferrer\">［6］\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>处理后复查时，应同时确认污染源是否消除、表面是否仍有缺陷，以及原有的清洁和排水条件是否需要调整。若疑似腐蚀已影响连接件、焊缝或门体稳定性，应暂停使用并请厂家检查，不能只以锈色消失作为恢复使用的依据。\u003C\u002Fp>\n\u003Ch2>资料来源\u003C\u002Fh2>\n\u003Col>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.outokumpu.com\u002Fen\u002Fexpertise\u002Fstainless-basics\u002Fcorrosion-resistance\" target=\"_blank\" rel=\"noopener noreferrer\">Outokumpu：Corrosion resistance of stainless steel\u003C\u002Fa>\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fworldstainless.org\u002Fwp-content\u002Fuploads\u002F2025\u002F02\u002FPassivating_Pickling_EN.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Euro Inox：Pickling and Passivating Stainless Steel，2007年第2版，第6节\u003C\u002Fa>\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fatlassteels.com.au\u002Fwp-content\u002Fuploads\u002F2021\u002F07\u002FAtlas-Tech-Note-No-5-Cleaning-Care-Maintenance-of-Stainless-Steels-17-06-21.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Atlas Steels：Cleaning, Care & Maintenance of Stainless Steels，2021年6月修订\u003C\u002Fa>\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.assda.asn.au\u002Fpublications\u002Ftechnical-faqs\u002Fpreventing-coastal-corrosion-tea-staining\" target=\"_blank\" rel=\"noopener noreferrer\">ASSDA：Preventing Coastal Corrosion（Tea Staining）\u003C\u002Fa>\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.assda.asn.au\u002Fpublications\u002Ftechnical-faqs\u002Fcleaning-your-indoor-stainless-steel\" target=\"_blank\" rel=\"noopener noreferrer\">ASSDA：Cleaning Your Indoor Stainless Steel\u003C\u002Fa>\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.outokumpu.com\u002Fen\u002Fexpertise\u002Fstainless-basics\u002Fpost-fabrication-treatment\" target=\"_blank\" rel=\"noopener noreferrer\">Outokumpu：Post-fabrication treatment of stainless steel\u003C\u002Fa>\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Cp>资料核对日期：2026年10月12日。配图为原创原理示意，不是实测照片。\u003C\u002Fp>",[],"建中说门道","Outokumpu、Euro Inox\u002Fworldstainless、Atlas Steels、ASSDA技术资料；核对于2026年10月12日","不锈钢门出现锈斑，就一定是假不锈钢吗？_建中技术问答","不锈钢门锈斑,不锈钢铁污染,不锈钢局部腐蚀,不锈钢门清洁,伸缩门保养","不锈钢门出现锈斑不一定是材质造假。了解表面铁污染、点蚀与缝隙腐蚀的区别，以及现场检查、日常清洁和专业处理的适用边界。",{"id":36,"name":46,"slug":348},{"title":361,"slug":362},"铝合金门框能配不锈钢螺钉吗？先看潮湿环境和接头设计","aluminium-door-frame-stainless-fastener-galvanic-corrosion",{"title":364,"slug":365},"望都公示校园门类维修结果：双庙小学玻璃门与卷帘门已修缮","wangdu-school-glass-rolling-door-repair-2026",[367],{"id":207,"title":37,"subtitle":368,"image":369,"mobileImage":16,"link":16},"行业动态 · 技术问答 · 产品FAQ","https:\u002F\u002Fwww.shenzhenjianzhong.com\u002Fsecurity-assets\u002F5085ba7fa31941f0ae59e7a8db089907e86b3d1e921787ea3e7e8ff1a14d84e7.jpg"]