硼铸铁--qsf999的安全生产小屋

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硼铸铁 | 2012-3-13 9:26:00

硼铸铁

灰铸铁中加入0.03-0.08%的硼,可在金相组织中得到不同数量的含硼渗碳体或莱氏体组织的铸铁。含硼渗碳体显微硬度在HV960-1280之间，随硼含量的增加，显微硬度增加。用硼铸铁制成的气缸套比高磷铸铁的使用寿命提高50-70%。近年来，已扩大应用到机床床身等耐磨零件上。

By:qsf999 | 阅读全文 | 回复(15) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-22 19:02:44

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Re:在漫画中识别身边的违章 | 2017-2-20 14:22:57

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Re:在漫画中识别身边的违章 | 2016-10-22 10:51:06

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Re:在漫画中识别身边的违章 | 2016-10-21 13:28:55

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Re:在漫画中识别身边的违章 | 2016-10-20 17:59:36

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Re:在漫画中识别身边的违章 | 2016-10-19 13:49:02

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Re:在漫画中识别身边的违章 | 2016-10-16 23:45:38

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Re:在漫画中识别身边的违章 | 2016-10-15 5:41:21

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Re:在漫画中识别身边的违章 | 2016-10-14 16:12:26

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Re:在漫画中识别身边的违章 | 2016-10-8 14:51:21

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原创 | 2016-9-30 15:52:01

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原创 | 2016-9-28 21:09:04

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原创 | 2016-9-6 21:34:44

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