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阀门受压件磁粉检测 磁粉的磁粉称量和粒度_阀门标准
阀门受压件磁粉检测 磁粉的磁粉称量和粒度
| 磁 粉 类 型 |
磁粉称量 g |
粒度 um |
| 干法用磁粉 | ≥7 | 300～50 |
| 湿法用磁粉 | ＜80 | |
| 荧光磁粉 | ≥4 | ＜50 |
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