As a kind of high temperature insulation fireproof material, fire sleeve is widely used in protecting cable, pipe and hydraulic equipment in high temperature environment. It is an important material in modern high temperature industry. Then, how can we distinguish the quality fire sleeve and inferior fire sleeve? Hebei Zeal as experts of global high temperatures to solve the problem of industry, will be detailed to explain how to distinguish the merits of fire sleeve.
We all know that the fire sleeve material is made of non alkali glass fiber made of high purity silicone rubber coated red first, when we get a fire sleeve, take a look at the surface of silicone rubber coating, firep sleeve with good quality will be smooth surface, without bumps, bubbles, rupture and scratches, without any impurities; while the poor quality of the fire sleeve, the surface is rough, there are bumps, bubbles and other impurities of things. See the silicone coating, you can look at the internal glass fiber preparation, high-quality fire sleeve, the internal glass fiber preparation neat, no messy glass fiber, and inferior fire sleeve, glass fiber preparation loose, messy. Finally, you can smell the taste of the casing, the good quality of the sleeve without obvious pungent taste, while the inferior one, pungent flavor, long-term inhalation of human body damage is very large.
Secondly, because the main performance of fire sleeve is high temperature resistant insulating and fireproof, so we can use calcination on fire sleeve with fire gun or a lighter, long-term temperature resistant fire sleeve is 560 degrees, 1650 degrees or lighter moments, spray flame temperature at about 800 degrees, so in the sleeve is in the process of experiment. Poor fire sleeve will appear very pungent taste, and instantly melted, and high-quality fire sleeve, after fire 10-15 minutes after combustion, the surface of the silicone will happen to carbonization, no obvious pungent taste, the inner layer of glass fiber is still intact, it is enough to prove that, when the continuous high temperature or on fire situation, fire protection sleeve quality can protect the pipeline well, hydraulic equipment safety and normal use, while the poor fire sleeve is likely to occur fire risk, cause losses.