There are several key reasons why ventilation ducts must be installed in metal cutting workshops:

1. Dust removal:

- Metal cutting process will produce a lot of metal dust, if not discharged in time, will diffuse in the workshop, affecting air quality and visibility. Long-term inhalation of such dust may cause workers to suffer from occupational diseases such as respiratory and lung diseases.

- The ventilation duct system can quickly collect and transport dust to the designated treatment equipment or discharge it to the outside through strong suction, effectively reducing the dust concentration in the workshop and protecting the health of workers.

2. Lower the temperature:

- Metal cutting equipment will generate a lot of heat during operation, making the workshop temperature rise. The high temperature environment will not only affect the work efficiency and comfort of workers, but also may adversely affect the normal operation of the equipment and reduce the service life of the equipment.

- Ventilation pipes can discharge the hot air in the room and introduce fresh cold air to achieve air circulation and cooling, providing a suitable working environment for workers and equipment.

3. Remove harmful gases:

- Some chemical agents may be used during metal cutting or some harmful gases may be produced. For example, welding smoke in the welding process contains various harmful substances, such as manganese, chromium, nickel and other heavy metals as well as carbon monoxide and nitrogen oxides.

- Ventilation pipes can discharge these harmful gases from the workshop in time, reducing their harm to the workers' bodies and pollution to the workshop environment.

4. Improve work efficiency and safety:

- A good ventilation environment can reduce the impact of dust and harmful gases on the body of workers, reduce workers' fatigue and improve work efficiency.

At the same time, reducing the temperature and humidity in the workshop can reduce the risk of equipment failure due to overheating, improve the stability and safety of the equipment, and reduce the occurrence of production accidents.