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在煤矿井下及有可燃性气体存在的产业中,必须对由冲击摩擦所产生的火花及热表面采取防止点燃措施。在本研究中,我们使用落锤式试验装置进行各种轻合金(其中采用了危险性最高的铝合金)与碳钢的冲击摩擦火花点燃甲烷气体的引燃试验,研究各种试验条件对引燃性能的影响 试验结果表明,在自由跌落的条件下,跌落高度是决定引燃性能的重要因素。试验还发现了冲击能量与引燃性能的关系,含镁量及含铍量对引燃几率的影响等。试验还表明,作为轻合金火花引燃危险性的评价指标,采用引燃几率为50％时的冲击能量是有效的。
In coal mines and industries where flammable gases exist, precautions must be taken to prevent sparks and hot surfaces caused by impact friction. In this study, we used a drop-weight test device for the ignition test of methane gas ignited by various light alloy (which uses the most dangerous aluminum alloy) and carbon steel impact friction spark to study various experimental conditions on the lead Influence of Ignition Performance Test results show that drop height is an important factor that determines ignition performance under free fall conditions. The experiment also found the relationship between impact energy and ignition performance, the impact of magnesium content and beryllium content on the ignition probability. Tests also showed that as an indicator of the ignition risk of light alloy sparks, it is effective to use impact energy at a firing probability of 50%.