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抛丸机清理镁合金
Hachieve| Time2011/9/20 8:49:28
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抛丸机清理镁合金的清理过程会产生镁粉尘.,而镁粉尘一定的浓度,温度下,或遇电火花,静电等情况下极易发生燃烧或爆炸是一种非常危险又必须实施的加工工艺.因此抛丸清理过程的防爆处理至关重要。

a) 产生爆炸或燃烧的几个条件
1) 存在易燃易爆粉尘: 如镁粉 镁粉  煤粉  面粉  碳粉 可燃气体等
2) 易燃易爆粉尘的浓度
3) 设备内部温度
4) 电火花,静电,冲击火花

b) 防范措施
1) 有良好的除尘抛丸室内始终保持负压
2) 避免冲击火花
选用合适弹丸 :玻璃微珠  镁合金丸等
室内护板:加厚聚氨酯防护板
挂具 : 不锈钢圆棒料焊接
3)泄爆
设备主室重力式泄爆阀门,泄爆方向朝向无操作人员方位
除尘器泄爆膜,
除尘管道泄爆门
采用防爆除尘器
湿法可燃易爆粉尘除尘器
干式可燃易爆粉尘防爆除尘器


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