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1、劃線要據風管的不同尺寸形狀和規格分別進行，同時對一段風管要完整進行，防止劃線錯孔和下料的多少有誤。板材剪切依據劃線的階段不同，分別進行，同時必須進行下料的復核，以免有誤。按劃線形狀用機械剪刀進行剪切。

1. The marking should be carried out according to the different sizes, shapes, and specifications of the air duct, and a section of the air duct should be completed to prevent errors in marking, drilling, and cutting. The cutting of sheet metal is carried out separately according to the different stages of marking, and a review of the cutting process must be carried out to avoid errors. Use mechanical scissors to cut according to the marked shape.

2、剪切時，手嚴禁伸入機械壓板空隙中，上刀架不準放置工具等物品，調整板料時，腳不能放在踏板機上，使用固定式震動剪兩手要扶穩鋼板，手離刀口不得小于5cm，用力均勻適當。板材下料后在軋口之前，必須用倒角機或剪刀進行倒角工作。金屬薄鋼板制作的風管用咬口連接、鉚釘連接、焊接等不同方法。咬口寬度和留量要根據板材厚度而定。

2. When cutting, hands are strictly prohibited from reaching into the gaps of the mechanical pressure plate. Tools and other items are not allowed to be placed on the upper tool holder. When adjusting the plate material, feet should not be placed on the pedal machine. When using a fixed vibration shear, both hands should hold the steel plate firmly, and the hand should not be less than 5cm away from the cutting edge. The force should be evenly and appropriately applied. After cutting the sheet metal, it must be chamfered using a chamfering machine or scissors before rolling. The air ducts made of metal thin steel plates are connected using different methods such as biting, riveting, and welding. The width and allowance of the bite should be determined based on the thickness of the board.

3、焊接時必須焊縫均勻，無裂紋及加渣現象，鉚釘連接時，鉚釘中心先垂直于面板，鉚釘頭把板材壓緊，使板材密合并排列整齊、均勻。板材之間鉚接，一般中間不可以加墊料，設計規定時，遵循設計。咬口時手指據滾輪護殼不小于50mm，手不準放在咬口機管道上扶穩板料。

3. When welding, the weld seam must be uniform, without cracks or slag. When connecting with rivets, the center of the rivet should be perpendicular to the panel first, and the rivet head should press the plate tightly to ensure that the plate is tightly packed and arranged neatly and evenly. When riveting between sheets, it is generally not allowed to add padding in the middle. When designing, follow the design regulations. When biting, the fingers should not be less than 50mm against the roller protective shell, and hands should not be placed on the biting machine pipeline to stabilize the plate material.

4、咬口后的板料將畫好的折方線放在折方機上，置于下模的中心線，操作時，使機械上刀片與下模中心線重合，折成所需的角度。折方時應相互配合并與折方機保持一定距離，以免被翻轉的鋼板或配件碰傷。

4. After biting, place the drawn folding line on the folding machine and place it on the centerline of the lower mold. During operation, make the mechanical upper blade coincide with the centerline of the lower mold and fold it to the desired angle. When folding, they should be matched with each other and kept at a certain distance from the folding machine to avoid being damaged by flipped steel plates or accessories.

5、制作員風管時，將咬口兩端拍成圓弧狀放在卷圓機上卷圓。按風管直徑規格適當調整上、下輥間距，操作時，手不得直接推送鋼板。折方或卷圓后的鋼板用合口機或手工進行縫合。操作時，用力均勻，不易過重。單、雙口確定咬合，無臟裂或半咬口現象。

5. When making the air duct, the two ends of the bite are flattened into an arc shape and placed on the rounding machine for rounding. Adjust the spacing between the upper and lower rollers according to the diameter specifications of the air duct. During operation, do not push the steel plate directly by hand. The folded or rolled steel plates are sewn together using a sewing machine or manually. When operating, apply force evenly and avoid being too heavy. Single or double bite confirmed bite, without any signs of dirty cracks or partial bite.

鍍鋅鋼板風管是以鍍鋅鋼板為主要原材料，經過咬口，機械加工成型，具有現場制作方便，同時具有可設計性，是傳統的通風、 空調 用管道，同時隨著技術的發展，由以前的手工制作改變為現在得全部機械化化生產，具有效率高，加工尺寸等特點。

Galvanized steel sheet air duct is mainly made of galvanized steel sheet as the main raw material, which is formed through biting and mechanical processing. It has the advantages of convenient on-site production and designability. It is a traditional ventilation and air conditioning pipeline. With the development of technology, it has changed from manual production to fully mechanized production, with high efficiency and processing size.

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