共查询到20条相似文献,搜索用时 78 毫秒
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通过对中锰渣摇包法生产高硅锰硅合金工艺开发性试验总结,确定了摇包生产的各项参数,为高硅锰硅合金生产提供了一种全新方法。应用该工艺生产高硅锰硅节能、无污染、产品质量好。 相似文献
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锰硅合金炉渣中锰回收率的影响因素 总被引:1,自引:0,他引:1
根据电炉冶炼锰硅合金的实际生产经验,分析了锰硅合金生产过程中影响锰硅合金炉渣含锰量的主要因素。同时指出,只要把这些主要因素控制在合适的范围内,就可降低渣中的含锰量,提高锰的回收率。 相似文献
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试样以混合熔剂熔融、酸化定容后,对硅锰合金中硅、磷进行系统分析。以硝酸、氢氟酸溶解试样,在大量磷酸存在情况下,用高氯酸氧化Mn2+为Mn3+后,用硫酸亚铁铵标准溶液滴定分析锰量。与国家标准方法相比,本法具有操作简便、准确性好,速度快,成本低,测定范围宽等特点。 相似文献
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低合金耐磨铸钢的研究与应用 总被引:8,自引:0,他引:8
低合金耐磨铸钢因含有Cr、Mo等元素,且显微组织为马氏体或马氏体+贝氏体,不仅强度、硬度远高于高锰钢,冲击韧性也接近于高锰钢。目前在大型水泥磨、煤磨上使用已显示出明显的优势,使用寿命比高锰钢提高1 ̄2倍,在很大程度上可取代高锰钢,具有广泛的应用前景。介绍了国内外在这一方面的研究与应用情况。 相似文献
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研究了TC4合金表面经等离子渗Mo处理后的耐磨性能和拉伸性能。通过SEM、EDS、SMM等研究渗Mo改性层的组织成分及断口形貌,并分析其磨损机理和拉伸性能。结果表明:TC4合金表面经等离子渗Mo处理后,其耐磨性能随表面硬度的提高而明显改善,且抗拉强度与原始基体相比仅略有下降,即达到了使合金的耐磨性能提高而基体力学性能不受损害的预期目的。 相似文献
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The effect of processing parameters such as hot rolling and heat treatment on microstructure and mechanical properties was investigated for a new 0.27mass% C and Ni,Mo-free low alloy martensitic abrasion resistant steel.The three-body impact abrasive wear behavior was also analyzed.The results showed that two-step controlled rolling besides quenching at 880℃and tempering at 170℃could result in optimal mechanical property:the Brinell hardness,tensile strength,elongation and-40 ℃impact toughness were 531,1 530 MPa,11.8% and 58J,respectively.The microstructure was of fine lath martensite with little retained austenite.Three-body impact abrasive wear results showed that wear mechanism was mainly of plastic deformation fatigue when the impact energy was 2J, and the relative wear resistance was 1.04times higher than that of the same grade compared steel under the same working condition.The optimal hardness and toughness match was the main reason of higher wear resistance. 相似文献
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采用扫描电镜分析,硬度测试和摩擦性能测试等手段,研究了稀土对低合金耐磨铸钢组织和性能的影响。结果表明,在低合金耐磨铸钢中添加0.15%稀土,可细化合金铸态组织,增加铸态组织中的铁素体数量,减少珠光体数量,同时可细化热处理后合金的贝氏体组织,使铁素体形态和大小分布均匀,马氏体数量减少。添加稀土后可使铸态合金硬度提高9.4%,摩擦系数由0.136 9减小为0.081 9。 相似文献
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The effect of cooling rate after 40% hot deformation on structure and mechanical properties of low alloy wear resistance cast iron was investigated by metallographic, scanning electron microscopes and detection of properties. The results show that for the cast steel after deformed, the amount of granular carbides of precipitation during the cooling decreased with the increase of the cooling rate, but the hardness was obviously enhanced, as a result, better mechanical properties will be obtained by force air cooling (cooling rate is about 7℃·s-1). And the reason of the change for structure and mechanical properties of the cast steel were analyzed. 相似文献