Briefly introduce: What are the advantages of choosing to install stainless steel welded air duct in ventilation and dust removal project of Suzhou sheet metal processing workshop?

Core advantages of stainless steel welded air duct in ventilation and dust removal project of Suzhou sheet metal processing workshop

In the ventilation and dust removal project of Suzhou sheet metal processing workshop, stainless steel welded air duct has become the preferred scheme by virtue of its characteristics of adapting to workshop working conditions and meeting environmental protection and safety requirements. Its core benefits can be embodied in five dimensions: environmental corrosion resistance, dust removal efficiency, structural stability, compliance and long-term economy:

1. Strong corrosion resistance, suitable for complex environment of sheet metal workshop.

Suzhou is located in the south of the Yangtze River, where the air humidity is high, and sheet metal processing involves steel cutting, polishing, welding and other processes. Metal dust, welding smoke (including iron oxide and acid oxide) and coolant volatiles are easily generated in the workshop, and ordinary carbon steel air ducts are easily rusted and corroded by corrosive substances, resulting in damaged air ducts and air leakage.

Stainless steel welded air duct (usually made of 304/316L material) contains chromium and nickel alloy components, which can form a dense oxide film, effectively resist corrosive substances in moisture and dust, and avoid the corrosion and peeling of the inner wall of the air duct-not only to prevent the air duct from shortening its service life due to corrosion (usually the service life is 15-20 years, which is 2-3 times that of carbon steel air duct), but also to avoid the corrosion impurities from mixing into the air flow, so as to ensure the cleanliness of the air output by the dust removal system and meet the requirements of the workshop production environment.

Second, smooth inner wall+seal welding to improve dust removal efficiency.

Dust (such as cold-rolled steel plate dust and welding dust) in the sheet metal processing workshop is fine and easy to adhere. If the inner wall of the air duct is rough or there is joint air leakage, dust will accumulate and block the air duct, or the negative pressure in the pipe will be reduced due to air leakage, which will affect the dust removal suction.

The advantages of stainless steel welded air duct are as follows: ① the inner wall is polished, the surface roughness is low (Ra≤0.8μm), and dust is not easy to adhere, which reduces the risk of blockage and the frequency of cleaning in the later period; (2) Using argon arc welding and other welding processes, there is no gap or air leakage at the joint of the air duct, which can stably maintain the negative pressure in the duct, ensure that dust is efficiently sucked into dust removal equipment (such as pulse dust collector), avoid dust spillage and pollute the air in the workshop, and ensure the occupational health of workers (in line with the requirements of occupational exposure limits on Harmful Factors in Industrial Places).

Third, the structural strength is high, which adapts to the complex layout of the workshop.

Suzhou sheet metal processing workshop often needs to arrange ventilation and dust removal pipes between equipment and floors, and some air ducts need to bear load (such as bearing their own weight+airflow impact when hanging and installing), or deal with mechanical vibration in the workshop (such as vibration when punching machines and bending machines are running).

The tensile strength of stainless steel (304 stainless steel tensile strength ≥515MPa) is much higher than that of carbon steel, PVC and other materials, and the welded air duct has good overall rigidity and is not easy to deform and crack; At the same time, the stainless steel air duct can be customized to bend, reduce diameter, tee and other special-shaped structures according to the workshop layout, so as to adapt to narrow spaces or complex trends, without frequent splicing, reducing fault points and improving system operation stability.

Four, strong compliance, meet the environmental protection and safety standards.

Suzhou has strict environmental protection requirements for industrial enterprises (such as the Management Measures for the Prevention and Control of Volatile Organic Compounds Pollution in Jiangsu Province), and the sheet metal workshop is a place with fire risk (metal dust accumulation may cause dust explosion when it meets an open flame), so the material selection of air ducts should comply with environmental protection and safety standards.

Stainless steel welded air duct: ① It does not contain volatile harmful substances such as formaldehyde and benzene, and will not release pollutants due to material aging, which meets environmental protection requirements; (2) It has good high temperature resistance (304 stainless steel can work stably below 800℃), even if local high temperature occurs in the workshop (such as welding operation), the air duct will not melt and release toxic gases, and the stainless steel is nonflammable, which can reduce the fire risk and meet the fire prevention requirements of air ducts in industrial workshops in the Code for Fire Prevention of Building Design.

Fifth, the long-term operation and maintenance cost is low, and the cost performance is higher.

Although the initial purchase cost of stainless steel welded air duct is higher than that of carbon steel and PVC air duct, it is more economical from the perspective of long-term operation and maintenance: ① it has strong corrosion resistance and reduces the frequency of air duct replacement (it is not necessary to replace the whole air duct in 15-20 years, while carbon steel air duct usually needs to be repaired or replaced in 5-8 years); (2) The inner wall is smooth and not easy to accumulate dust, so as to reduce the number of manual cleaning (only 1-2 professional cleaning and 3-4 carbon steel air ducts are needed every year); ③ The welded structure has no aging problem of sealing parts (for example, the rubber sealing ring of PVC air duct is prone to aging and air leakage, so it needs to be replaced regularly), which reduces the maintenance cost, and the long-term use cost performance ratio is significantly higher than that of other air ducts.