共查询到20条相似文献,搜索用时 15 毫秒
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Ti-IF钢冷轧板罩式退火工艺研究 总被引:1,自引:0,他引:1
为提高Ti-IF钢的综合性能,在Gleeble-1500热模拟试验机上,研究了退火工艺对Ti-IF钢组织和再结晶结构的影响,结果表明:再结晶温度随保温时间的延长而降低,在实验室条件下,保温1 h的再结晶温度为650℃,保温3 h的再结晶温度为640℃;Ti-IF钢对退火升温速度不敏感,可以采用较高的升温速度,如60℃/h.根据罩式退火的特点,为保证钢卷的冷点和温度的均匀性,Ti-IF钢的退火控制温度应按罩式炉上限控制,并保证足够的保温时间.经过工业生产和用户使用表明,产品冲压性能优良,质量稳定. 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):388-392
The Nb-Ti microalloyed high strength IF steel sheet was used to study the effect of annealing temperature on the microstructures,mechanical properties and textures.The experimental results show that experimental steel is incomplete recrystallization at 750℃ annealing,but complete recrystallization from 780℃ to 870℃ under experimental conditions.When the annealing temperature was increased,the yield strength and tensile strength would gradually reduce,the plastic strain ratio and yield point elongation would gradually increase.The yield strength,tensile strength,elongation,the plastic strain ratio and the strain hardening exponent were approximate 300MPa,410MPa,36.5%,1.7 and 0.22 respectively under annealing temperature 810℃ to 840℃.When the annealing temperature was increased,the α-textures and γ-textures were gradually weakened,and the α-textures have a trend to {111} texture.Therefore,the suggestion of the optimal recrystallization annealing temperature is about 810℃ to 840℃ in industrial production. 相似文献
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采用极图与取向分布函数(ODF),并通过显微组织观察及显微硬度测试,研究分析了90%冷拉减面率的变形钽丝在1100℃、1250℃、1360℃、1500℃下退火过程中的再结晶行为,提出了拉拔钽丝的再结晶模型。研究发现:在低温火后钽丝发生了强烈的回复;在1360℃退火后再结晶基本完成,出现了均匀的等轴状晶粒,再结晶织构{110}<001>与变组织构{112}<110>之间存在27℃<110>的关系;在1500℃退火后钽丝中发生了二次再结晶,品粒变得粗大,并出现了一种与原再结晶织构{110}<001>呈27℃<110>关系的再结晶织构组分{441}<110>。钽丝的再结晶行为符合选择生长理论。 相似文献
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冷轧不锈钢带连续退火炉综述 总被引:1,自引:0,他引:1
根据冷轧不锈钢带的热处理工艺,对我国已经投产的几条冷轧连续退火酸洗线(CAPL)的连续退火炉的设备组成、性能特点及发展趋势作一综述. 相似文献
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研究了合金成分和显微组织对连续退火冷轧双相钢板屈服点延伸的影响。实验结果表明:冷轧双相钢板的屈服点延伸随着钢中的锰当量和马氏体体积分数增加而减小。为了不发生屈服点延伸,合金中的锰当量必须超过1.61%,马氏体体积分数的门槛值为7%。 相似文献
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针对本钢冷轧厂05CuPCrNi冷轧耐蚀钢退火后性能不均、板形不良等问题,通过实验室实验及生产试验,对退火工艺进行了优化,调整了退火温度、加热及保温时间,使生产出的带钢性能均匀、板形良好. 相似文献
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利用Gleeble-3500热模拟试验机对工业纯钛TA2冷轧板进行退火实验,结合硬度法与金相法测定了TA2的再结晶温度,根据Arrhenius公式计算了TA2的再结晶激活能,并对冷轧退火板进行力学性能测试。结果表明保温时间为9 min时,TA2的再结晶温度在520~600℃之间,恒温700℃时,再结晶时间为1.84 min;再结晶激活能Q为5.6578×104 kJ.mol-1;当再结晶退火温度在680~700℃,保温时间在30min左右,钛板可以保持良好的力学性能。 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):437-441
Cold heading carbon steels for 8.8 grade fasteners are mostly produced by pouring reel or spooler plant.Currently,with improvement of cold heading equipment,the 10.9 grade fasteners produced by cold heading have replaced most of hot forged fasteners gradually.As well known,wire rod coil has been used to produce alloy steels.The properties and microstructures of medium carbon alloy steels,such as B7,ML40Cr and SCM435,produced by wire rod coils under hot rolled condition and after spheroidization,have been investigated.In this paper,the effect of microstructure of hot rolled steel wire rods on cold heading annealing process was studied.The results show that the hardness of wire rod coil products is generally lower than that of bar products by 5 ~ 10 HRB and the ferrite fraction in wire rod coil products is higher.After spheroidization treatment,the hardness value and spheroidization grade of wire rod coil products are relatively low.alloy steels of wire rod coils can be directly drawn slightly and the annealing time can be reduced at the same time.This practice is much helpful for energy conservation. 相似文献
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介绍了冷轧硅钢退火技术的最新发展情况,并结合硅钢退火炉保护气氛多样性和高温高氢的特点,对炉子安全、辐射管选型、燃烧控制方式、辊套选择等进行了分析和探讨。 相似文献
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