通風管道是通風和空氣調度體系的重要組成部分，大部分都是由管道加工設備（如通風管道出產線）制成。但是因為各種各樣的原因，或許導致管道加工設備加工而成的通風管道呈現問題。
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、加工資料未達標
1. Processing data not up to standard
①體現：板材外表不平坦，厚度不均勻，有顯著的壓痕、裂紋、砂眼和銹蝕等狀況；通風管道平面下沉，周圍面向外凸起，有顯著的變形。
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影響：作業時通風管道漏風，空調負荷增加，一同風壽數和功用被影響。
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：資料不合格，不能滿意制造通風管道的需求。
③ Cause: The data is unqualified, and the requirements for manufacturing ventilation ducts are not satisfied.
④辦法：在運用通風管道加工設備制造通風管道前，要先查看資料出廠合格證書和資料質量證明還有外觀厚度等，確保資料是可用的。
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、通風管道翹角及彎頭視點禁絕
2. The warping angle of the ventilation pipe and the view point of the elbow are forbidden
①體現：矩形通風管道兩相對平面、兩頭面不平行；折角不平直；對角線不相等；咬口不嚴。
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影響：會使通風管道聯承受力不均勻，設備后的通風管道不平直，法蘭盤墊片不緊密，體系漏風，構成空調負荷丟掉，而且縮短運用壽數。
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：板下料放樣禁絕確；通風管道兩兩平行，相對面的板料長度和寬度不相等。
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辦法：翻開下料時，應對板料嚴厲角方，對每片板料的長度、寬度以及查驗對角線，使它們的差錯操控在容許規模內；下料后的板料，應將通風管道相對面的兩片板料重合查驗規范性。
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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