FM certified fuse link

FM certified fuse linkFusible pipes used for fire smoke exhaust and fire dampers, fire sprinklers, and air conditioning units/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.

FM certified fuse linkProduct features
①The selection of materials must be precise and pure, and the composition of metal elements must meet the requirements99.99%above;

②The quantity ratio of metal elements should be precise, with an error of less than0.1%； 
③adoptThe process of smelting should be done at the right time, and the time should not be too long or too short;

④The sequence of metal elements entering the furnace cannot be reversed and must be done step by step; 
⑤Welding implementation“Four determinations”Fixed personnel, fixed time, fixed temperature, and fixed quantity.

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.