通风管道是通风和空气调度体系的重要组成部分，大部分都是由管道加工设备（如通风管道出产线）制成。但是因为各种各样的原因，或许导致管道加工设备加工而成的通风管道呈现问题。
Ventilation duct is an important part of ventilation and air dispatching system, most of which are made of pipeline processing equipment (such as ventilation duct production line). However, for a variety of reasons, it may lead to problems in the ventilation pipes processed by pipeline processing equipment.
1、加工资料未达标
1. Processing data not up to standard
①体现：板材外表不平坦，厚度不均匀，有显着的压痕、裂纹、砂眼和锈蚀等状况；通风管道平面下沉，周围面向外凸起，有显着的变形。
① Embodiment: the surface of the plate is uneven, the thickness is uneven, and there are significant indentation, cracks, sand holes, rust and other conditions; The plane of the ventilation pipe is sinking, and the surrounding face is convex, with significant deformation.
②影响：作业时通风管道漏风，空调负荷增加，一同风寿数和功用被影响。
② Impact: The ventilation duct leaks during operation, the air conditioning load increases, and the number and function of the same air are affected.
③原因：资料不合格，不能满意制造通风管道的需求。
③ Cause: The data is unqualified, and the requirements for manufacturing ventilation ducts are not satisfied.
④办法：在运用通风管道加工设备制造通风管道前，要先查看资料出厂合格证书和资料质量证明还有外观厚度等，确保资料是可用的。
④ Method: Before using the ventilation duct processing equipment to manufacture the ventilation duct, the factory certificate, quality certificate and appearance thickness of the data shall be checked to ensure that the data are available.
2、通风管道翘角及弯头视点禁绝
2. The warping angle of the ventilation pipe and the view point of the elbow are forbidden
①体现：矩形通风管道两相对平面、两头面不平行；折角不平直；对角线不相等；咬口不严。
① Embodiment: two opposite planes and two end faces of rectangular ventilation duct are not parallel; The corner is not straight; Diagonal lines are not equal; The bite is not tight.
②影响：会使通风管道联承受力不均匀，设备后的通风管道不平直，法兰盘垫片不紧密，体系漏风，构成空调负荷丢掉，而且缩短运用寿数。
② Impact: It will cause uneven bearing capacity of the ventilation duct, uneven ventilation duct behind the equipment, loose flange gasket, air leakage of the system, loss of air conditioning load and shortening the service life.
③原因：板下料放样禁绝确；通风管道两两平行，相对面的板料长度和宽度不相等。
③ Cause: The blanking and setting out of plates are strictly prohibited; The two sides of the ventilation pipe are parallel, and the length and width of the sheet on the opposite side are not equal.
④办法：翻开下料时，应对板料严厉角方，对每片板料的长度、宽度以及查验对角线，使它们的差错操控在容许规模内；下料后的板料，应将通风管道相对面的两片板料重合查验规范性。
④ Method: When turning over the blanking, the sheet shall be strictly angled, and the length, width and diagonal of each sheet shall be checked to make their error control within the allowable scale; For the sheet after blanking, the two sheets on the opposite side of the ventilation duct shall be overlapped to check the standardization.
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