硼铁--qsf999的安全生产小屋

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硼铁 | 2012-3-13 9:27:00

硼铁

由硼和铁组成的铁合金，主要用于钢和铸铁中。在钢中添加0.07%B可显著提高钢的淬透性。硼加入18%Cr、8%Ni的不锈钢中经过处理可使沉淀硬化，改善高温强度和硬度。在铸铁中硼会影响石墨化，因而增加白口的深度使其冷硬耐磨。在可锻铸铁中加入0.001%～0.005%的硼，有利形成球墨和改善其分布状况。目前低铝、低碳硼铁是非晶态合金的主要原材料。根据GB5082-87标准，我国硼铁分为低碳和中碳两类8个牌号。

By:qsf999 | 阅读全文 | 回复(17) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-20 17:28:45

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Re:在漫画中识别身边的违章 | 2017-2-19 22:51:02

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Re:在漫画中识别身边的违章 | 2017-2-19 13:42:27

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By:rglnr(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章 | 2017-2-18 18:20:45

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Re:在漫画中识别身边的违章 | 2016-10-23 15:02:02

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Re:在漫画中识别身边的违章 | 2016-10-23 15:01:37

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Re:在漫画中识别身边的违章 | 2016-10-23 14:53:16

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Re:在漫画中识别身边的违章 | 2016-10-23 1:41:29

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Re:在漫画中识别身边的违章 | 2016-10-21 12:58:39

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Re:在漫画中识别身边的违章 | 2016-10-18 4:42:58

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Re:在漫画中识别身边的违章 | 2016-10-16 23:24:18

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Re:在漫画中识别身边的违章 | 2016-10-10 3:26:48

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原创 | 2016-9-30 15:52:00

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原创 | 2016-9-28 21:09:03

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原创 | 2016-9-6 21:34:43

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