L. P. Karjalainen (Department of Mechanical Engineering
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University of Oulu
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Oulu
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Finland)
金属学报(英文版)
Modelling has become a more and more valuable tool in the design, control and development of steel processing. Empirical regression equations, physically based approachs, artificial neural networks and hybrid models are being theied in computer modelling. In all cases, relevant data are necessary, which can be most economically obtained by physical simulation. Physical simulation with a Gleeble simulator has been used in a large number of tasks at the University of Oulu for ten years in cooperotion with the Finnish metals industry. Some examples of these will be described and discussed below, such as the optimization of the recrystallization controlled rolling process, the improvement of the hot strength model for the control of coiling tension and the optimization of continuous strip annealing schedules.Finally,brief remarks will be then on a couple of projects now under way.
关键词:
physical simulation
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孟庆格
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李俊
机械工程材料
在连续退火水淬模拟试验装置上对0.18C-0.4Si-2.0Mn微合金化超高强度冷轧薄带钢进行了不同工艺的连续退火水淬试验,并对其显微组织与拉伸性能进行了研究.结果表明:保温温度低于800℃时,保温时间对组织和性能的影响显著,其组织主要为片状马氏体;当温度高于830℃时,保温时间对抗拉强度和伸长率影响较小,组织主要为板条马氏体;随保温温度和水淬温度的升高,试验钢的抗拉强度由1 150 MPa逐渐升至1 700 MPa,屈服强度由600 MPa增至1600 MPa,断后伸长率则由8.5％逐渐降至2％;水淬工艺的保温温度和水淬温度分别在830℃和750℃或保温温度在850℃和水淬温度高于700℃时,试验钢的抗拉强度可达1 500 MPa以上,屈服强度可达1 200 MPa.
关键词:
先进超高强度钢
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连续退火
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冷轧
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水淬
涂元强
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白会平
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杜蓉
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蔡捷
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杨宏武
钢铁研究
采用MODEL CCT-AWY薄钢板热处理仪,对高硬度镀锡板进行模拟连续退火工艺的研究,结果表明:在化学成分、退火保温时间保持不变的情况下,随着退火温度的升高,晶粒增大.确定了适合镀锡原板连续退火工艺的主要参数,即退火温度730℃,保温时间40 s,快冷速度35℃/s,过时效温度范围为400～330℃,过时效时间为110 s.
关键词:
高硬度
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连续退火
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镀锡板
