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工业纯钛板材冷轧粘辊机理及影响因素探讨与研究
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国家冷轧板带装备及工艺工程技术研究中心\亚稳材料制备技术与科学国家重点实验室,国家冷轧板带装备及工艺工程技术研究中心

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Discussion and research on sticking mechanism and influence factors during cold rolling in industrial pure titanium plate
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Yanshan University,National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University,

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    摘要:

    钛材广泛应用于航空航天等领域,但由于其在冷轧过程中容易出现粘辊问题,造成生产效率较低。本文针对该问题,首先计算了Ti、Al、Cu、Mg与Fe的界面结合能及各金属内部结合能,Ti与Fe界面粘着能大于各金属内部结合能,而另三种金属则介于金属内部结合能之间,因此当Fe、Ti表面紧密接触并发生相对运动时,断裂将发生于Ti基体较深层处。然后分析了TA2冷轧工况下的粘辊情况,为表征粘辊程度,在建立冷轧粘着指数模型的基础上,重点分析了压下规程、轧制速度、润滑剂种类等因素对粘辊程度的影响,提出TA2冷轧速度应低于3m/s,单道次压下率应低于20%等防粘工艺,对于指导生产实践、治理粘辊具有现实意义。

    Abstract:

    Titanium have been widely used in aerospace and other fields . But one of the key factors leading to low processing efficiency is the sticking problem between titanium plate and the roll surface during the process of cold rolling. Focusing on this problem, the interfacial adhesion energies between Ti, Al, Cu, Mg and Fe and their internal binding energies were calculated. It is found that the interfacial adhesion energy between Ti and Fe is not only greater than the internal binding energy of Ti, but also greater than the internal binding energy of Fe, which is different from the other three metals. Therefore, fracture will occur on the deeper layer of Titanium plate’s substrate with close contact and relative movement between Fe and Ti surfaces. Then, the sticking situation of TA2 cold-rolling is analyzed. It is found that lubricating film is easier to rupture than other metals due to titanium’s unique properties,, which results in direct contact and sticking between roller and Titanium plate. Consequently, the sticking index is proposed to characterize the degree of sticking, the impact of draft rolling schedule, rolling speed, lubricant type on the degree of sticking is analyzed. It is concluded that the cold-rolling speed of TA2 should be lower than 3m/s, the reduction rate of each pass should be less than 20%, which is important to guide the productive practice and prevent sticking.

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彭艳,李文山.工业纯钛板材冷轧粘辊机理及影响因素探讨与研究[J].稀有金属材料与工程,2016,45(8):2009~2015.[pengyan, liwenshan. Discussion and research on sticking mechanism and influence factors during cold rolling in industrial pure titanium plate[J]. Rare Metal Materials and Engineering,2016,45(8):2009~2015.]
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  • 收稿日期:2014-06-06
  • 最后修改日期:2014-09-03
  • 录用日期:2014-09-28
  • 在线发布日期: 2016-10-09
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