UL Safety Certified Fusible Film

UL Safety Certified Fusible FilmFusible pipes/temperature sensors used in fire smoke exhaust and fire dampers, fire sprinklers, and air conditioning units. When the corresponding temperature is reached, the melting plate automatically melts and the temperature sensor automatically opens, allowing the unit to operate and achieve the expected safety effect.

UL Safety Certified Fusible FilmThe difference between temperature controlled melting alloy and tin lead solder lies in:
1、 Temperature controlled melting alloys have the purpose of temperature control and also have welding functions, while tin lead solder only has welding functions and cannot meet the requirements of temperature control; 
2、 Temperature controlled melting alloys have a smaller temperature difference than tin lead solder, a narrower melting range, and a more accurate melting point; 

3、 The melting point of temperature controlled melting alloy is lower than that of tin lead solder, and it is also easy to melt, forming a sensitive and error free thermal sensor; 
4、 Temperature controlled melting alloys can be used for devices that are extremely sensitive to temperature in extreme temperature fiber welding, while tin lead solder can only be used for welding183℃The above welding components; 

5、 Tin lead solder is a binary alloy, while temperature controlled melting alloys are composed of multiple alloys, which require more precise and pure metal elements. The melting process is difficult, with high technological content and better quality.

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.