| 磨粉机轧辊失效机理及提高使用寿命的途径 |
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| 引用本文： | 赵博彦
,徐克明
,田志兴.磨粉机轧辊失效机理及提高使用寿命的途径[J].沈阳工业大学学报,1987(2). |
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| 作者姓名： | 赵博彦 徐克明 田志兴 |
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| 作者单位： | 中原轧辊厂 工程技术人员 |
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| 摘 要： | 本文探讨了磨辊的磨损失效机理。用扫描电镜分析磨粉机轧辊的磨面和磨屑,提供了疲劳脱落和不均匀磨损的证据。侧磨试样发现磨辊亚表层显微裂纹,珠光体抑制渗碳体中裂纹的扩展。 经变质处理,在硬度变化不大情况下提高铸铁冲击韧性。磨损试验表明,相对耐磨性随韧性提高而提高,硬度与相对耐磨性并非线性关系,硬度与韧性相匹配的材料具有良好的抗磨性,装机试验比原材料磨辊使用寿命提高30％。
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| 关 键 词： | 轧辊 失效机理 变质作用 韧性 使用寿命 |
Analysis of Failure Mechanism of Flour Grinding Rollers and an Investigation of Improving Its Service Life |
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| Zhao Boyan,Xu Keming,Tian Zhixing.Analysis of Failure Mechanism of Flour Grinding Rollers and an Investigation of Improving Its Service Life[J].Journal of Shenyang University of Technology,1987(2). |
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| Authors: | Zhao Boyan Xu Keming Tian Zhixing |
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| Abstract: | The proof of the spalling by fatigue and the uneven-distributed wear have been obtained by analyzing the wear surface and the abrasive dust of rollers. Micro-cracks have been found in the subsurface in rollers by polishing sides of the specimen. Pearlite can prevent micro-crack to develope in cemen-tite. The failure mechanism is discussed in present article.Modification with inoculant in molten iron expects the improved impact-toughness, with a little change of hardness, the relative-wear-resistance is increases with impact-toughness. Between hardness and wear-resistance, linear relation is not found. A good abrasion resistance only appeared with proper combinations between toughness and hardness. The test showed that the service life of new rollers raised 30% compared with that of the previous ones. |
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| Keywords: | rolls failure mechanism metamorphism toughness service life |
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