Due to the low strength of stainless steel air ducts, they must be reinforced according to regulations after production is completed. The commonly used reinforcement form for internal support reinforcement of galvanized screws, with a diameter of no less than 8mm. It should be pointed out that if the screw passes through the pipe plate without paying attention to sealing treatment, it will cause a hidden danger of air leakage during system operation. When strengthening internal support, it is particularly important to add gaskets and seal (apply sealant) on both sides of the pipe wall, as this step is easily overlooked or cut corners during the construction process. Below, the editor of the ventilation duct manufacturer will introduce the difficulties in processing stainless steel air ducts:

不銹鋼風管加工硬化嚴重。奧氏體不銹鋼和一些高溫合金不銹鋼是奧氏體組織，切割時容易加工硬化。加工硬化傾向于比普通碳鋼高幾倍，刀具在加工硬化區切割，使用壽命縮短。

Severe work hardening of stainless steel air ducts. Austenitic stainless steel and some high-temperature alloy stainless steel are austenitic structures that are prone to work hardening during cutting. Work hardening tends to be several times higher than ordinary carbon steel, and cutting tools cut in the work hardening zone, resulting in a shortened service life.

切割力大，切割溫度高。本實用新型材料強度高，切削時切向應力大，塑性變形大，切削力大。此外，材料導熱性差，導致切削溫度升高，高溫往往集中在刀片附近狹窄的區域，從而加速磨損。

High cutting force and high cutting temperature. This utility model has high material strength, high tangential stress during cutting, large plastic deformation, and high cutting force. In addition, the poor thermal conductivity of the material leads to an increase in cutting temperature, which is often concentrated in a narrow area near the blade, thereby accelerating wear.

易粘刀。奧氏體不銹鋼和馬氏體不銹鋼具有切屑強、切削溫度高的特點。當強韌性切屑流經前刀面時，會出現粘合、熔焊等粘刀現象，影響加工配件表面的粗糙度。

Easy to stick knife. Austenitic stainless steel and martensitic stainless steel have the characteristics of strong chip strength and high cutting temperature. When strong and ductile chips flow through the front cutting surface, adhesion, fusion welding, and other adhesion phenomena may occur, affecting the surface roughness of the processed parts.

刀具磨損會加速。上述材料一般含有高熔點、高塑性、高切削溫度，加速磨損，頻繁更換磨刀，影響生產效率，提高使用成本。主要是降低切割線速度和進給量。使用特殊的不銹鋼或高溫合金加工工具，鉆，鉆孔、攻絲或內冷。

Tool wear will accelerate. The above materials generally contain high melting point, high plasticity, high cutting temperature, accelerated wear, frequent replacement of grinding tools, which affects production efficiency and increases usage costs. Mainly to reduce the cutting line speed and feed rate. Use special stainless steel or high-temperature alloy processing tools to drill, drill, tap, or internally cool.