Smoke fire dampers are generally installed on the pipes of the mechanical smoke exhaust system and are normally closed. When a fire occurs, the smoke is opened. When the flue gas temperature in the flue gas duct reaches 280 degrees, it is closed, and the amount of smoke leakage is met within a certain period of time. And fire integrity requirements, from the role of smoke and fire. Today, manufacturers will explain to you about the function of the normally open smoke exhaust fire damper. I hope to bring you help. Here's what we can learn about: 1. It is normally open at normal times. When a fire occurs, the valve automatically shuts off when the control center outputs DC24V power. 2. When the temperature of the pipeline reaches 280°C, the fuse operates and the valve closes automatically. 3, output valve closing signal, interlock smoke exhaust fan to stop. 4, manually closed, manually open. The above is the normal open type smoke damper function explained by the manufacturer. Thank you for your long-term support. If you want to learn more, please pay attention to our website. We will update it regularly for everyone! Bonded Compression Moulding NdFeB There are two main Bonded NdFeB Magnet manufacturing methods: Bonded Compression Moulding Ndfeb,Ndfeb Arc Bonded Magnet,Ndfeb Block Bonded Magnet Jinyu Magnet (Ningbo) Co., Ltd. , https://www.magnetbonwin.com
ï‚·Bonded Injection Plastic Moulding NdFeB
ï‚·Bonded Compression Moulding NdFeB
Bonded Compression Moulding NeFeB Magnets ( called Compression Bonded Magnets) are made by using many isotropic Neodymium, Iron, Boron materials, as well as crushed and powdered Samarium and Cobalt ingredients.Combinations of different elemetal grades are used to creat specific magnetic properties. Compression Bonded Magnets offer higher magnetic strength than Injection Plastic moulded magnets. Although Compression Bonded Magnets have higher magnetic particle density, ther are limeted to simple geometric shapes due to the compaction process. The epoxy is used to protect the magnet surface from industrial solvent and automotive fluids. The normal applications of the magnets range from -40℃ to 150℃.
The advantages of Compression Bonded Magnets:
1. High quantity and even volume manufaturing, with up to millions of pieces per year
2. Single-time moulding and multi-poles orientation.
3. Effective surface treatment to prevent corrosion. The product is coated with epoxy resin to be protect the surface smoothing.
4. Excellent magnetic properties. The energy of Compression Bonded Magnets is 3 times as high as anisotropic ferrite magnets.
Application of Compression Bonded magnets:
•Mini motors
•Automatic contolling devices
•Sensors
•Drivers
•Telecom
Manufacturers explain the normally open smoke exhaust valve function!