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高速钢轧辊研究的进展 总被引:7,自引:0,他引:7
高速钢轧辊具有硬度高,红硬性好,耐磨性好等特点,在轧钢行业获得了广泛应用。本文综述了高速钢轧辊的在成分,组织,性能,制造方法和应用效果以及高速钢轧辊使用中的注意问题,并展望了高速钢轧辊研究与发展方向。 相似文献
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高速钢轧辊的研究和应用 总被引:11,自引:0,他引:11
高速钢轧辊具有硬度高、红硬性好、耐磨性好等特点,在轧钢行业获得了广泛应用。在介绍了高速钢轧辊的成分、组织和性能基础上,详细介绍了高速钢轧辊制造方法,并对不同制造方法的特点进行了评述,还介绍了高速钢轧辊的应用效果以及高速钢轧辊使用中的注意问题,并展望了高速钢轧辊的研究与发展方向。 相似文献
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主要介绍了高速钢轧辊的成分、组织和性能及其应用,并提出了高速钢轧辊生产和使用中值得重视的若干问题,最后介绍了推广应用高速钢轧辊应采取的具体措施。 相似文献
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高速钢轧辊由于在金相组织有硬质MC碳化物的分散存在则是高耐磨性轧辊 ,比以前使用的高Cr铸铁轧辊寿命提高 3~ 5倍 ,所以在热带连轧机工作辊多数使用。近年来 ,为了降低轧制成本提高热带钢表面质量和数量而使轧制负荷增加等 ,使轧辊使用条件和环境更加苛刻 ,则要求进一步提高高速钢轧辊其耐表面精糙 (桔皮麻面 )性能和耐磨损性能等。日本川崎制铁公司为了满足高耐表面粗糙性能高速钢轧辊的要求 ,研究了高速钢轧辊中碳化物破环现象和化学成分C、Cr、Mo对表面损伤及耐磨性能的影响。在此基础上采用离心铸造法生产高Cr高Mo高重钢… 相似文献
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高速钢轧辊在CSP精轧机前段机架使用初探 总被引:2,自引:0,他引:2
为延长换辊周期,适应大量轧制薄规格产品,提高轧辊的使用寿命,达到高速钢轧辊较好的使用效果,提高产品质量,降低生产成本,介绍了高速钢轧辊的优良特性及其在使用中应注意的问题。 相似文献
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JIANGZhi-qiang FUHan-guang DINGYu-cheng 《钢铁研究学报(英文版)》2005,12(1):22-27
Therollslikenickelchromiuminfinitechilledcastiron ,bainiticductileiron ,highchromiumcastironandhardalloyrollhavebeeninvestigated[1- 4] .Theformerthreerollsarecost effectiveandhaveashorterservicelife .Forthelatterone ,ithasexcellentwearresistancebutmuchhig… 相似文献
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高速钢复合轧辊的研究现状及进展 总被引:25,自引:3,他引:22
论述了高速钢复合轧辊的制造工艺和材质的研究进展及发展趋势,认为今后对高速钢复合轧辊的研究重点应放在高碳高钒(铌)系高速钢的成分设计、组织控制和优化复合轧辊界面结构上。 相似文献
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A new method was developed by a thermal wear machine to evaluate the thermal wear of roils in steel rolling process. The steel strip and rolls were simulated by upper and lower heating disks. The upper heating disk could he kept at a temperature of over 900 ℃ by induction heating. The pressure between the disks as high as 323.2 MPa could be achieved and the slipping rate could be 12. 7 %. The thermal wear of high speed steel (HSS) roll material, the wear rate of the HSS roll, and the SEM morphology of a worn HSS roll surface were investigated. This method was useful and could be employed to simulate friction and wear between strip and roll during the strip rolling process. 相似文献
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李斌 《金属材料与冶金工程》2004,32(6):14-17
研究了淬火温度、冷却方式、回火温度和回火次数对高碳高钒高速钢轧辊组织和性能的影响.确定了最佳热处理工艺参数。结果表明。盐冷高速钢轧辊具有优良的淬透性。不易出现裂纹.辊面硬度高而且均匀,耐磨性好.和高铬铸铁轧辊相比,高速钢轧辊寿命提高8.4倍。 相似文献
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高碳高速钢是取代普通耐磨合金制造轧辊的新材质,淬火高速钢辊套硬度高,内孔加工性能差.采用控制辊套内层冷却技术,在热处理条件下,获得了内外层组织和性能呈梯度分布的高速钢复合辊套.利用神经网络对保温板的厚度和导热系数、保温涂料的厚度和导热系数与辊套内层硬度样本集的学习,采用改进的BP网络算法,建立了复合辊套热处理保护工艺人工神经网络模型,具有较高的精度和很好的泛化能力,且运算速度快,可方便用于指导实际生产. 相似文献
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Sunghak Lee Do Hyung Kim Jae Hwa Ryu Keesam Shin 《Metallurgical and Materials Transactions A》1997,28(12):2595-2608
This is a study of the thermal fatigue property in three centrifugally cast work rolls, i.e., a nickel-grain cast-iron roll (Ni-grain roll), a high-chromium cast-iron roll (Hi-Cr roll), and a high-speed steel roll
(HSS roll). The thermal fatigue mechanism was investigated with a focus on the roll microstructure and the increase in tensile
stress which led the specimen to fracture when it reached the tensile strength. The thermal fatigue test results indicated
that the thermal fatigue property was best in the HSS roll, followed by the Hi-Cr roll and the Ni-grain roll, respectively,
and that the thermal fatigue life of each roll decreased with the increase of the mean temperature or of the temperature range
of the thermal fatigue cycle. The results were then interpreted based on the amount of primary carbides and the cyclic softening
phenomenon associated with the exposed time to elevated temperatures. The coarse primary carbides on the specimen surface
acted as fatigue crack initiation sites, as they cleaved at a low stress level to form cracks. The HSS roll, having the highest
tensile strength and the smallest amount of primary carbides, thus showed better thermal fatigue property than the other rolls.
For the improvement of the thermal fatigue property of the rolls, this study suggests a homogeneous distribution of primary
carbides by reducing the carbide segregation formed along the solidification cell boundary and by optimizing of the roll-casting
process. 相似文献