FM certified melting film

FM certified melting filmUsed in air conditioning systems Fusible tube/The temperature sensor, after reaching the corresponding temperature, the melting plate automatically melts, the temperature sensor automatically opens, and the mechanism works to achieve the expected safety effect.

FMcertificationFusible sheetpurpose
1Used for installing fire dampers in high-rise buildings, hotels, shopping malls, and underground garages74℃Soluble tablets;
2Used for equipping fire dampers on water vessels and passenger and cargo ships74℃Fusible sheet;
3Used for equipping smoke exhaust and fire dampers in high-rise buildings, hotels, shopping malls, and warehouses74℃Fusible sheet;
4Used for fireproof steel doors, rolling shutters, roller shutter controllers, automatic reducers, and release devices74℃Fusible sheet;
5Non standard fire dampers used in kitchens, drying rooms, and pharmaceutical high-temperature workshops100℃The74℃Fusible sheet;
6Specially designed for automatic fire extinguishing devices in kitchen cooking equipment100℃The74℃Temperature controlled melting metal chain;
7Used for the linkage safety temperature control device of range hood74℃Fusible sheet.

The melting point is the core of temperature controlled melting alloys 
Only with accurate melting point can the purpose of temperature control be achieved, and it is the core of temperature controlled melting alloys. When we talk about accurate melting point, it mainly refers to the accurate operating temperature of the welded parts. In the action temperature standard of welded parts, there are static non force action temperature standard and dynamic force action temperature standard. Only when the melting temperature of the alloy can adapt and meet the action temperature of the welded part, can it be considered as the melting point standard. Under normal circumstances, when the melting temperature of the alloy is not affected by external tension, pressure, or expansion force, there will be a certain temperature difference between the operating temperature of the welded part and the melting temperature of the alloy. The reason is that the melting of alloys, except for eutectic alloys, generally follows a solid phase line (i.e. curve)ACEDB）To the liquidus line (i.e. curve)AFB）The gradual process. From the solidus line“circuit breaker”When the welded component is affected by external force, its operating temperature is determined before the solid phase line to the liquid phase line“pull apart”The greater the external force, the earlier the action temperature of the welded component, and the greater the temperature difference. From this, it can be seen that the accuracy of the melting point of the alloy also needs to be tested by the operating temperature of the welded parts, and it can be used, matched“meet the standard”The melting point of an alloy can only be considered accurate. There is a melting point that cannot be used, does not match, does not“meet the standard”It cannot be considered a temperature controlled alloy, but only a general welding material.