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A86—4型不锈钢过滤器为HF_1、HF_2、HF_4型干式回火防止器的心脏部件。而干式回火防止器是装在乙炔瓶上,当气割、气焊操作时,用作防止氧——乙炔混合气体回火而发生爆炸的安全装置。 其阻火的原理是因为不锈钢过滤器具有大量的开孔孔隙,且孔径细小曲折,并且有很好的导热性。因此当火焰通过毛细管时产生热交换,使燃烧物的热量通过多孔壁及邻近的结构面散失,从而阻止燃烧过程的进行,使火焰熄灭。
A86-4 stainless steel filter is the heart of HF_1, HF_2, HF_4 type dry tempering preventer. The dry tempering prevention device is mounted on the acetylene bottle, when the gas cutting, gas welding operation, used to prevent oxygen - acetylene gas mixture tempering explosion safety device. The principle of fire resistance is because the stainless steel filter has a large number of open pores, and small diameter zigzag, and has good thermal conductivity. Therefore, when the flame passes through the capillary, a heat exchange occurs, so that the heat of the combustion object is dissipated through the porous wall and the adjacent structural surface, thereby preventing the combustion process from being carried out and extinguishing the flame.