What are the advantages of installing environmentally friendly stainless steel welded ventilation pipes in the waste gas treatment project of mold polishing workshop?

Advantages of installing environmentally friendly stainless steel welded ventilation pipes in waste gas treatment project of mold polishing workshop

Metal dust and polishing wax fog will be produced in the production process of mold polishing workshop, and the wet waste gas formed with the volatilization of cutting fluid has high hardness. Long-term transportation will scour the inner wall of the pipeline, and water vapor and wax will easily cause corrosion and dust leakage of ordinary air pipes. In this kind of waste gas treatment project, stainless steel welded ventilation pipes have many advantages, such as corrosion resistance, strong sealing, smooth and wear-resistant inner wall, safety and stability, and simple operation and maintenance, which are suitable for negative pressure dust collection and waste gas transportation in polishing workshop.

First, it is corrosion-resistant and wear-resistant, and it is suitable for complex waste gas medium in polishing workshop. The waste gas from mold polishing contains metal dust, polishing wax vapor and cutting fluid water mist. The water vapor and trace grease adhere to the inner wall of the pipeline for a long time, and the common galvanized air duct is prone to rust and peeling. The metal dust continuously washes the pipe wall, and there will be perforation and air leakage in a short time. Stainless steel welded air ducts are mostly made of 304 material, and the passive protective film is formed on the surface, which is resistant to water vapor and grease corrosion and abrasion impact of hard metal dust. After continuous full welding and passivation treatment, the weld position is not easy to rust first, which greatly prolongs the service life of the pipeline, reduces the shutdown loss caused by frequent replacement of the pipeline, and has lower long-term comprehensive cost.

Secondly, the all-welded structure has excellent air tightness, which ensures the efficiency of waste gas collection. The pipeline is formed by argon arc welding and full welding, and the joint is seamless, and the air leakage rate is much lower than that of flange splicing air duct. Polishing and dust removal system relies on negative pressure to collect dust at the work station. Once the pipeline leaks air, the external air will reduce the negative pressure of the system, which will cause the polishing dust not to be effectively captured, and the dust will spread in the workshop, which will affect the workshop environment and environmental assessment acceptance. The stainless steel welded air duct has good overall sealing performance, and it is not easy to leak under negative pressure, which ensures the stable air volume of the whole waste gas treatment system, the stable collection effect of the gas collecting hood, lower energy consumption of the fan and reduces the loss of invalid air volume.

Thirdly, the inner wall is smooth and the wind resistance is small, so it is not easy to be blocked by dust, which reduces the probability of system failure. The inner wall of stainless steel welded air duct is flat, and there are no blind corners such as rivets and flange protrusions, so the airflow resistance is small, which reduces the fan load. Fine metal dust and wax chips produced by polishing are not easy to adhere to the smooth pipe wall, which reduces dust accumulation and reduces the risk of pipeline blockage. Dust accumulation will not only weaken the ventilation capacity, but also lead to dust explosion when metal dust accumulates in large quantities. Smoothing the inner wall can reduce dust accumulation and safety risks, and at the same time, it is convenient for pipeline purging and cleaning up the dust deposited inside.

Fourthly, it has high structural strength, resists negative pressure deformation and adapts to complex workshop layout. Most waste gas pipelines for mold polishing are dust removal pipelines with large negative pressure. Stainless steel welded air pipes have strong overall rigidity, and the weld strength is consistent with the base material, and the pipe wall is not prone to sag and deformation under negative pressure. Special-shaped elbows, tees and reducing diameters can be customized according to the workshop site to adapt to the complex installation layout of multi-point gas, pipelines across workshops, overhead or along the wall. The overall structure of the pipeline is stable, the seismic performance is good, and it is not easy to loosen after long-term operation, which reduces the workload of pipeline maintenance and reinforcement in the later period.

Fifth, the safety performance is good, which meets the requirements of dust explosion-proof and environmental protection specifications. Polished metal dust belongs to combustible dust, which has explosion risk. Stainless steel material is not easy to generate sparks, and its antistatic performance is better than that of ordinary iron sheet, which reduces the risk of dust friction and ignition. The pipeline is free of rust debris which is easy to fall off, and rust slag will not be mixed into waste gas treatment equipment such as the back-end filter cartridge and spray tower, thus protecting the back-end purification device and reducing the loss of filter materials. After welding, the whole pipeline can directly pass the environmental protection acceptance, meet the relevant specifications of waste gas emission and occupational health, and is suitable for the environmental protection reconstruction project of polishing workshop in mold factory.

Sixth, it is easy to maintain and adapt to long-term stable production. Stainless steel surface is not easy to rust, so it only needs to regularly purge the dust accumulated inside, and it is not necessary to do frequent anti-corrosion painting maintenance. The pipeline is welded and formed, and the joints are firm, and there are few maintenance points in the later period, which reduces the downtime and maintenance time. At the same time, the material is resistant to high temperature, can withstand the high-temperature waste gas produced by polishing process, and will not deform and age under short-term high-temperature working conditions, which is suitable for continuous production in the workshop. Compared with galvanized air ducts, which need to be overhauled and replaced in a few years, stainless steel welded air ducts are put into use once and run stably for a long time, which is more suitable for workshops that produce dust and waste gas for a long time, such as mold polishing.

To sum up, stainless steel welded ventilation pipes match the working conditions and pain points of waste gas treatment in mold polishing from the aspects of corrosion prevention, sealing, wear resistance and safety, so as to ensure dust collection and waste gas transportation stably, reduce system failures, and help enterprises to achieve the standard discharge stably. It is the preferred pipeline scheme for waste gas treatment project in mold polishing workshop.