Ventilation ducts are mostly made of duct processing equipment, which mainly plays the role of circulating air and reducing the concentration of harmful gases. However, due to various reasons, problems may arise in the processed air ducts. The following are two common problems and solutions in the production of ventilation pipes.

　　1. 加工的材料不符合標準

　　1. The material processed does not meet the standard.

　　A性能:板材表面不平整，厚度不均勻，有明顯的壓痕、裂紋、砂孔、疤痕和銹斑;導管平面下沉，側邊向外突出，變形明顯。

　　Performance A: The surface of the sheet is not uniform, the thickness is not uniform, and there are obvious indentation, cracks, sand holes, scars and rust spots; the plane of the conduit sinks, the lateral edge protrudes outward, and the deformation is obvious.

　　B影響:運行中風道泄漏，空調負荷增加，影響風的使用壽命和性能。

　　B Impact: Air duct leakage in operation, air conditioning load increases, affecting the service life and performance of the wind.

　　C原因:材料不合格，不能滿足風管制作的要求。

　　Reason C: The material is not up to standard and can not meet the requirements of air control operation.

　　措施d:使用風管加工設備制作風管前，應檢查材料出廠合格證、材料合格證、外觀厚度等，確保材料齊全。

　　Measure d: Before making air duct by using air duct processing equipment, check the qualification certificate of material leaving factory, material qualification certificate, appearance thickness, etc. to ensure that the material is complete.

　　二、風管翹曲角度和彎頭角度不準確

　　2. Incorrect winding angle and elbow angle of duct

　　A性能:矩形管道的兩個相對平面和兩個端面不平行;角度不直;對角線不相等;咬得松了。

　　Performance A: The two relative planes and two end faces of rectangular pipe are not parallel; the angles are not straight; the diagonals are not equal; the bite is loose.

　　B影響:對風道連接受力不均，安裝后風道不平，法蘭墊片松動，系統漏風，造成空調負荷損失，使用壽命縮短。

　　B effect: uneven force on air duct connection, uneven air duct after installation, loose flange gasket, air leakage of the system, resulting in air conditioning load loss, shortened service life.

　　C原因:落版放樣不準確;風管彼此平行，板的長度和寬度不相等。

　　Cause C: The layout is not accurate; the air ducts are parallel to each other, and the length and width of the plate are not equal.

　　D措施:下料時應嚴格夾板角度，測試每塊板的長、寬、對角線，使其偏差控制在允許范圍內;板材落料后，應將風道對面的兩塊板材重疊，檢查尺寸精度。

　　Measure D: When cutting, the angle of splint should be strict, and the length, width and diagonal of each plate should be tested so that the deviation can be controlled within the allowable range. After blanking, the two plates opposite the air duct should be overlapped to check the dimensional accuracy.

　　在通風管道的生產中，經常會遇到加工材料不合格、風管翹曲角和彎頭角不準確的現象。因此，為了生產出實用、耐用、高品質的風管，必須對風管加工設備的運行前后進行充分的預置和操作準備，以保證風管的，減少不必要的損失。

　　In the production of ventilation ducts, the phenomenon of unqualified processing materials, inaccurate winding angle and elbow angle of ducts are often encountered. Therefore, in order to produce practical, durable and high-quality air ducts, it is necessary to fully pre-set and prepare the operation of air duct processing equipment before and after operation to ensure the safety of air ducts and reduce unnecessary losses.