不锈钢风管应的规范或工艺方法来指导不锈钢风管的焊接工艺。因而，依据以往的施工经验，总结出一套适应施工必须、提升施工质量、处理施工难题、确保应用的不锈钢风管制造方式。在作用的前提下，能符合外观质量的需求。目前，我们已经在项目中实施了此方法，并取得了良好的效果。
The specification or process method of stainless steel air duct shall guide the welding process of stainless steel air duct. Therefore, based on the previous construction experience, a set of stainless steel air duct manufacturing methods that meet the construction requirements, improve the construction quality, deal with the construction problems, and ensure the application are summarized. Under the premise of function, it can meet the requirements of appearance quality. At present, we have implemented this method in the project and achieved good results.
特性：焊接品质好，形变小，外型好；风管加固形式新颖，降低成本；适用范围适用于薄厚1.0mm或以上S弯螺旋风管的焊接和施工。
Features: good welding quality, small deformation, good appearance; The reinforcement form of the air duct is novel and the cost is reduced; The scope of application is applicable to the welding and construction of S-shaped spiral cyclone tube with a thickness of 1.0mm or more.
工艺原理：在镀锌板 风管产品标准的基础上，选用氩弧焊焊接1.0厚不锈钢钢板矩形 风管。氩弧焊不仅用以风管的横向连接，还用以风管的纵向拼凑，即风管接头均采用氩弧焊焊接。风管选用不锈钢角钢框架和斜角加固法，选用不锈钢板加固，以保障风管的刚度要求。
Process principle: on the basis of the product standard of galvanized sheet air duct, argon arc welding of 1.0 thick stainless steel rectangular air duct is selected. Argon arc welding is not only used for the horizontal connection of the air duct, but also for the longitudinal splicing of the air duct, that is, the air duct joints are welded by argon arc welding. Stainless steel angle steel frame and inclined angle reinforcement method are used for the air duct, and stainless steel plate is used for reinforcement to ensure the rigidity requirements of the air duct.
不锈钢风管组对，设定加强架：切割好材料后设定2个不锈钢板组，焊接前在好风管组上设定已制做好的加强架。风管纵向焊接：固定风管夹具，纵向焊接风管。风管纵向焊缝为角焊缝。那么，不锈钢风管的制造要点是什么呢？
Stainless steel air duct assembly and reinforcement frame setting: set 2 stainless steel plate groups after cutting the materials, and set the fabricated reinforcement frame on the air duct group before welding. Longitudinal welding of air duct: fix the air duct clamp and weld the air duct longitudinally. The longitudinal weld of air duct is fillet weld. So, what are the manufacturing points of stainless steel air duct?
风管侧焊：风管翻边高度保持在15mm。假如翻边太小，不仅不便焊接操作和夹具应用，并且焊接时容易将高温转移风管上，导致风管形变。假如翻边太大，材料便会消耗。
Side welding of air duct: the flanging height of air duct shall be kept at 15mm. If the flanging is too small, it is not only inconvenient for welding operation and fixture application, but also easy to transfer high temperature to the air duct during welding, resulting in air duct deformation. If the flanging is too large, the material will be consumed.
焊接钢筋骨架:将设置好的不锈钢角钢框架移各节流管横向翻边接头处，用夹具夹紧，风管横向翻边接头与不锈钢筋焊接框架。这样可以避免角铁与风管直接焊接引起的形变。因为不锈钢角钢加固框架只是起加以固定功效，不锈钢角钢加固框架与风管翻边的焊接可采取中断焊接。然后对不锈钢风管开展酸洗钝化处理，以提升风管的防腐特性。
Welding reinforcement framework: move the set stainless steel angle steel frame to the transverse flanging joint of each throttle pipe, clamp it with clamps, and weld the frame between the transverse flanging joint of the air duct and the stainless steel bar. This can avoid deformation caused by direct welding of angle iron and air duct. Because the stainless steel angle steel reinforcement frame is only used for fixing, the welding between the stainless steel angle steel reinforcement frame and the air duct flange can be interrupted. Then carry out acid pickling and passivation treatment on the stainless steel air duct to improve the anti-corrosion characteristics of the air duct.
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