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Research on the Rolling Characteristics with Ultrasonic Oscillation for Hard-to-machine Materials

难加工材料超声振荡滚压特性研究

基本信息

批准号：
14550713
负责人：
KAWANAMI Takao
金额：
$ 1.98万
依托单位：
Kanazawa Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550713/
关键词：
Ultrasonic Oscillation Apparatus Cold Rolling Cold Sheet Mill Rolling Lubricant Surface Characteristics Stainless Steel Titanium Oscillation 極低炭素鋼板高張力鋼版

项目摘要

Although studies on applying an ultrasonic oscillation (USO) to materials have been partly carried out in such fields of cutting, blanking, drawing and so, there have been few cases of utilizing the USO to sheet rolling. In our study, an exciting rolling method, which utilizes the ultrasonic waves, has been developed for materials to be rolled such as SUS304, SUS430, Ti, Al, Cu, ultra low carbon steel (ULCS) and 80kg high tensile strength steel (HT80), and thereby the variations of both load characteristics and material surface characteristics have been clarified.1.Characteristics of 2-high mill roll/dry cold rolling, where the USO being applied to sheet materials :(1) The load decrement effect was confirmed in such materials as SUS304, SUS430, Ti, Al and HT80. The tendency of its effect became more and more conspicuous with increasing a draft. (2)In cases of rolling Cu and ULCS, none of the load decrement effect was observed. (3)As for a magnitude of the load decrement effect due to a … More change of conditions, in case of rolling SUS304, a thicker sheet had a bigger effect and a lower rolling speed caused a greater load decrementsCharacteristics of 2-high mill roll/lubricated cold rolling :The load decrement due to lubrication itself was the main factor, and any multiplier effects due to the USO rolling were not observed.Result of material surface analysis :None of differences were observed both in the microstructures of the surface layer section and in the hardness distributions in the sheet thickness direction before and after the USO rolling. Changes of the surface roughness, brightness and irregularity according to various conditions, were comprehensible, but any constant tendency was not confirmed.2.Characteristics of 2-high mill roll/dry cold rolling, where the USO being applied to the work roll :In case of rolling ULCS, a same level of the load increment as shown when the USO was applied to the sheet material to be rolled, was observed. The roll surface roughness had been greatly changed, and therefore further study on the equipment including any damages to it should be required.3.Measuring of sheet amplitude :According to the results of measuring the sheet materials to be rolled before rolling, with a laser displacement transducer, when the amplitude being set at 3.3 μm, both the frequencies and the amplitudes were higher in cases of rolling Al, Cu and ULCS, medium in case of SUS, and lower in cases of Ti and HT80. The difference in such a tendency seems to depend greatly on a soft or hard material. Less

虽然将超声振动应用于材料的研究已在切割、冲裁、拉深等领域进行了部分研究，但将超声振动应用于板材轧制的案例还很少。在本研究中，针对SUS304、SUS430、钛、铝、铜、超低碳钢(ULCS)和80 kg高强度钢(HT80)等被轧材料，开发了一种利用超声波的励磁轧制方法，从而弄清了负荷特性和材料表面特性的变化。1.二辊轧辊/干式冷轧的特点，其中USO应用于板材：(1)在SUS304、SUS430、Ti、Al和HT80等材料中证实了减载效应。随着吃水的增加，其影响的趋势也越来越明显。(2)在滚动铜和超低碳钢的情况下，没有观察到减载效应。(3)关于…引起的减载效应的大小条件变化较大，在轧制SUS304的情况下，较厚的板材影响较大，较低的轧制速度导致较大的负荷下降。二辊轧辊/润滑冷轧的特点：润滑本身造成的负荷下降是主要因素，没有观察到任何由于USO轧制而产生的乘数效应。材料表面分析结果：USO轧制前后，表层断面的组织和板厚方向的硬度分布没有变化。表面粗糙度、白度和不规则性随不同条件的变化是可以理解的，但没有任何恒定的趋势。2.二辊冷轧/干式冷轧的特点是，对工作辊施加USO：在轧制ULCs的情况下，负荷增加的程度与对待轧制的板材施加USO时的负荷增加水平相同。轧辊表面粗糙度发生了很大的变化，因此需要对该设备进行进一步的研究，包括是否有损坏。3.板材振幅的测量：根据轧制前对待轧制板材的测量结果，使用激光位移传感器，当振幅设置为3.3μm时，铝、铜和ULCs的频率和振幅都较高，超音速轧制的频率和幅度较高，钛和HT80的频率和振幅较低。这种倾向的差异似乎在很大程度上取决于软质或硬质材料。较少