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Porous explosion proof mouldings made from abrasives - are used as flame trap sleeves on gas detectors or as fuses in safety appts.
Porous explosion proof mouldings made from abrasives - are used as flame trap sleeves on gas detectors or as fuses in safety appts.
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机译:由磨料制成的多孔防爆成型品-用作气体探测器的阻火套或安全设备中的保险丝。
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摘要
Material for mfg. explosion proof sleeves consisting of a porous body or moulding permeable to gas, the material being an abrasive with Mohs' hardness =6. The abrasive is pref. electrocorundum and/or boron carbide and/or SiC and/or corundum. The abrasive is pref. used to make housings for an element which can create an explosion in a medium, esp. (a) a current limiting resistance; (b) a thermistor or pisistor used in a sensor or explosive media in gas analysis appts.; (c) a fuse. The sleeve or housing is pref. made from a mixt. of fine abrasive grains and a binder which burns below the m.pt. of the abrasive; the mixt. is moulded under press., then heated to sinter the abrasive and burn out the binder, leaving a porous moulding. The binder is pref. a mixt. of starch, feldspar and clay. Used for safety devices in coal mining or the chemical-, gas-, petroleum-, or other industries.
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