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src=\"https:\u002F\u002Fimg.shenzhenjianzhong.com\u002Fpublished\u002Fmedia\u002Fagent-articles\u002F542\u002F20261017\u002F179222619788938630\u002Farticle-542-0e28cdbf92f8a65d.webp\" alt=\"锁舌与扣板正常配合及位置偏离产生干涉的非比例示意\" loading=\"lazy\" \u002F>\u003C\u002Fp>\u003Cp>图2：锁舌与扣板配合位置变化可能产生干涉。图中偏移方向仅为示意，实际由门形与约束决定，不表示热弯曲一定导致竖向位移；示意非比例，不能用作调整或施工尺寸。\u003C\u002Fp>\u003Cp>Allegion的技术说明指出，现场调整扣板、锁舌或密封条，可能只是临时且不足以解决热弯曲的处理。原因在于：位置配合如果随温差变化，仅针对某个时刻改变五金位置，未必解决产生变形的条件。\u003C\u002Fp>\u003Ch2>怎样区分观察线索与诊断结论\u003C\u002Fh2>\u003Cp>报修时，可在不反复强行开关的前提下记录发生时段、门是否受到直晒、室内是否开空调，以及门边哪一处开始擦碰。已有照片或日常观察中，早晚与日晒时的差异也有帮助。这些信息用于让维修人员复核温差关联，不是要求使用者自行测出“合格变形量”。\u003C\u002Fp>\u003Cp>若全天持续擦碰，或门扇下垂、铰链松动、门框不方正，检查不能只围绕日晒展开。SDI的故障指南分别讨论门框、铰链和锁扣配合问题；热弯曲与其他安装或磨损问题也可能同时存在。\u003C\u002Fp>\u003Cp>NAAMM技术资料提醒，热弯曲在许多情况下随日晒条件变化，但极端情况下门表面板的变形可能永久保留。因此，“傍晚可能缓解”不能作为忽略门已经无法正常使用的理由，更不能直接据此判定供货、安装或使用方的责任。\u003C\u002Fp>\u003Ch2>改善措施应针对暴露条件和整门配置\u003C\u002Fh2>\u003Cp>浅色表面和适当遮阳可作为设计或整改评估方向，但需要结合门的实际构造、涂层体系及厂家要求。已有防火、安防或特殊涂层要求的门，不宜由使用者自行改色、切削门边或扩大锁孔。也不要靠增加关门力、猛拉锁具来克服卡阻。\u003C\u002Fp>\u003Cp>如果门已经不能可靠关闭，或影响人员正常通行，应及时交由管理人员和专业维修人员处理。涉及疏散、防火功能的门，还要按所在场所的管理要求保障通行和防护功能，不能只等待天气转凉。\u003C\u002Fp>\u003Cp>判断的重点是把“温差变化”和“门框、门扇、五金配合”放在一起核对。日晒后的难关可以提示热弯曲，最终仍应依据现场状态和产品资料确定原因及处理方案。\u003C\u002Fp>\u003Ch2>资料来源\u003C\u002Fh2>\u003Cp>Steel Door Institute：《Installation Troubleshooting Guide for Standard Steel Doors & Frames》，SDI122-21，2026年重申，第24节Thermal Bow及门框、铰链相关章节。https:\u002F\u002Fsteeldoor.org\u002FSDI-122\u002F\u003C\u002Fp>\u003Cp>NAAMM\u002FHMMA：《Thermal Bow》，HMMA810 TN02-17；HMMA Q3 2021 Newsletter。https:\u002F\u002Fnaamm.org\u002Fnews\u002Fhmma-q3-2021-newsletter\u002F\u003C\u002Fp>\u003Cp>Allegion知识库：《What is thermal bow?》。https:\u002F\u002Fkc.allegion.com\u002Fkb\u002Farticle\u002Fwhat-is-thermal-bow\u002F 以上资料于2026年10月17日核对；用于解释现象，不替代国内项目设计、产品要求或现场验收。\u003C\u002Fp>",[],"建中说门道","Steel Door Institute SDI122-21（2026重申）；NAAMM HMMA810 TN02-17；Allegion技术知识库，2026-10-17核对","钢质外门日晒后难关：热弯曲机理与安装问题的区别","钢质外门,热弯曲,温差,门缝,锁扣配合","钢质外门在日晒和室内外温差作用下可能发生热弯曲。了解其对门缝、锁扣的影响，区分观察线索与现场诊断，以及遮阳、颜色和维修的适用条件。",{"id":248,"name":71,"slug":348},{"title":361,"slug":362},"东莞职业技术学院拟更换宿舍防火门锁具，预算包含安装等服务费用","dongguan-polytechnic-fire-door-lock-replacement-2026",{"title":364,"slug":365},"北京一小区拟更换625樘防火门，更正公告明确安装计量单位","yaojiayuan-fire-door-replacement-unit-correction-2026",[367],{"id":334,"title":62,"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"]