Why do you need to install stainless steel welded ventilation ducts in the grinding and polishing workshop of automobile wheels?

Stainless steel welded ventilation ducts need to be installed in the automobile wheel hub grinding and polishing workshop, mainly based on the following key requirements:

I. Workshop environment and occupational health and safety

Dust pollution control

A large amount of metal dust (such as aluminum, magnesium, iron, etc.) and abrasive debris will be produced during wheel hub grinding and polishing, which are easily suspended in the air.

Advantages of stainless steel air duct:

Strong corrosion resistance, can deal with metal particles and possible corrosive substances (such as polishing agent residue) in dust for a long time, and avoid secondary pollution caused by corrosion and damage of the inner wall of the air duct.

Smooth surface, not easy to absorb dust, easy to clean and maintain, and ensure long-term and efficient operation of ventilation system.

Safeguard the health of employees

Long-term inhalation of metal dust may lead to occupational health problems such as pneumoconiosis and respiratory diseases.

The ventilation system can rapidly reduce the dust concentration in the workshop by negative pressure pumping (such as connecting a dust collector) and meet the occupational health standards (such as GBZ 2.1-2019 "occupational exposure limits of Hazardous Factors in Workplace").

Second, the equipment safety and production stability

Explosion-proof and fire prevention requirements

When metal dust such as aluminum and magnesium reaches a certain concentration, it may cause explosion when exposed to open flame (for example, the lower explosion limit of aluminum dust is about 35g/m).

Safety of stainless steel air duct;

The material is non-combustible, and the welding process can ensure the overall tightness of the air duct and reduce the risk of dust leakage.

Combined with explosion-proof fan and electrostatic grounding, the explosion hazard can be effectively reduced (refer to GB 15577-2018 Safety Regulations for Dust Explosion Prevention).

Equipment heat dissipation and working condition optimization

Long-term operation of grinding and polishing equipment will generate heat, and the increase of workshop temperature may affect equipment accuracy and processing quality.

The ventilation system can introduce fresh air and exhaust hot air, maintain the stability of temperature and humidity in the workshop and prolong the service life of the equipment.

III. Process Compliance and Environmental Protection Requirements

Meet environmental regulations

According to the Integrated Emission Standard for Air Pollutants (GB 16297-1996), the dust emission in the workshop should reach the specified concentration (for example, the particle emission concentration ≤ 120 mg/m).

Stainless steel air duct with high-efficiency filtration equipment (such as bag dust collector and filter cartridge dust collector) can ensure that the dust is discharged up to standard after purification and avoid environmental punishment.

Prevent accidents caused by dust accumulation

Dust that is not cleaned in time is easy to accumulate in the corners of equipment, ground and pipelines, which may cause fire or affect the operation of equipment due to friction and static electricity.

Continuous ventilation system can reduce dust deposition and reduce safety risks.

Four, other advantages of stainless steel welded air duct

High strength and long service life:

The welding process ensures that the air duct structure is firm, can bear the long-term high-frequency ventilation load and reduce the maintenance cost.

Good sealing:

The welded joints are tight, which avoids the air leakage problem that may occur in traditional flange connection and improves ventilation efficiency.

Adapt to complex layout:

Bending and branching pipes can be customized according to the workshop space, and the grinding and polishing stations can be flexibly covered to ensure that each dust producing point can be effectively pumped out.

summary

Installing stainless steel welded ventilation duct in the grinding and polishing workshop of automobile wheel hub is a triple need of occupational health and safety, explosion-proof and fire prevention of equipment and environmental protection compliance. Its core goal is to control dust pollution, reduce explosion risk, optimize workshop environment through efficient and safe ventilation system, and finally ensure production safety and sustainability. In the actual design, it is necessary to combine the workshop scale, dust characteristics (such as particle size and concentration) and local laws and regulations, and select appropriate air duct specifications, wind speed (usually 15-25m/s to prevent dust settling) and purification equipment.