Research on the Rolling Process Tribology for Hard-to-machine Materials under vacuum conditions

真空条件下难加工材料滚压过程摩擦学研究

• 批准号: 12650723
• 负责人: KAWANAMI Takao
• 金额: $ 2.3万
• 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: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650723/
• 关键词: Vacuum Rolling Mill; Warm Rolling; Cold Rolling; Titanium; Stainless Steel; Rolling Lubricant; SiAlON Roll; 圧延潤滑

1. Improving of the rolling mill reliabilityThe 4 high mill with 30mm work roll diameter, which composes a specific designed device, has already been developed to realize a heavy draft rolling, which is now under applying for a patent. Now, in order to increase a roll force when using the SiAlON roll, an improvement in the relative strength of the axis part, through changing a work roll position, has been planned.2. Research on the rolling process tribology under vacuum conditions(1) Vacuum and non-lubricant cold rolling and warm rolling; As the results of rollings of such metals as SUS 304, SUS 430, Ti, Cu, Al under the conditions of non-lubricant cold rolling with using SKD61 rolls, a rolling load increases in all cases under the conditions that the degree of vacuum is high, and this tendency becomes more and more conspicuous as the draft increases. In the case of rolling under the conditions ofnon-lubricant warm rolling, the results of rollings of the SUS 304 and the Ti show a contr … More ary tendency, but those of rollings of other materials show little changes.(2) Vacuum and lubricant cold rolling and warm rolling; The rolling lubricity of PFPE (perfluoropolyethers), which has a low steam pressure of 5 X 10^<-13> torr at the room temperature, is superior in comparison with the lubricity of an oil the market used for each metal. In the case of cold rolling of a metal, there is a tendency that the rolling load generally increases as the degree of vacuum increases. However, in the case of cold rolling of the Al, there show little change in the rolling load. In the case of warm rolling pfthe SUS 304 and the Ti, a contrary phenomenon to the said tendency is shown.(3) Rolling behavior of the SiAlON roll; Both the cold rolling and the hot rolling were carried out under a vacuum condition on the SUS 304 and the Ti, with using two kinds of rolls, that is, the SKD61 roll and the SiAlON roll. From these results obtained, it has been confirmed that, when using the SiAlON roll, the rolling load is greatly reduced especially in the case of hot rolling. In general, the surface of rolled sheet after rolling is rough and its brightness decreases thereby.Through the results obtained as described in the above (l), (2) and (3), these subjects such as a process of an adhesion to the roll surface, a process of the roll coating, an analysis of changing of the sheet / roll surface properties, an effect of material's properties and so, are now continuously being investigated.3. Characteristics of the cutting working of TiAl intermetallic compounds:Vertical-milling and face-milling were carried out on a material of Ti-47at % Al-3at % Cr to investigate a damage on the tool and an accuracy of the processing working. From these results obtained, it has been cleared that this material has a high cutting-resistance property, and its tool life is short due to an adhesive stripping. Less

1.提高轧机的可靠性工作辊直径为30 mm的四辊轧机已研制成功，并已申请专利。现在，为了在使用SiAlON辊时增加轧制力，已经计划通过改变工作辊位置来提高轴部的相对强度。真空条件下轧制过程摩擦学研究（1）真空无润滑冷轧和温轧;作为在使用SKD 61轧辊的无润滑冷轧条件下轧制SUS 304、SUS 430、Ti、Cu、Al等金属的结果，在真空度高的条件下，轧制负荷在所有情况下都增加，并且这种趋势随着吃水深度的增加而变得越来越明显。在无润滑温轧条件下轧制时，SUS 304和Ti的轧制结果表明， ...更多信息 而其它材料的轧制过程中，其变化不大。(2)真空和润滑剂冷轧和温轧; PFPE（全氟聚醚）的轧制润滑性，在室温下具有5 X 10^℉的低蒸汽压力<-13>，与市场上用于每种金属的油的润滑性相比是上级的。在金属的冷轧的情况下，存在这样的趋势，即轧制载荷通常随着真空度的增加而增加。然而，在铝冷轧的情况下，轧制负荷几乎没有变化。在SUS 304和Ti的温轧情况下，显示出与上述趋势相反的现象。(3)SiAlON轧辊的轧制行为：SUS 304和Ti在真空条件下使用SKD 61轧辊和SiAlON轧辊这两种轧辊进行冷轧和热轧。从这些结果可以确认，在使用SiAlON轧辊的情况下，特别是在热轧的情况下，轧制负荷大幅降低。通过上述（1）、（2）和（3）中所述的结果，这些主题例如粘附到辊表面的过程、辊涂的过程、板/辊表面性质变化的分析、材料性质的影响等，现在正在不断地进行调查。TiAl金属间化合物的切削加工特性：对Ti-47 at % Al-3at % Cr材料进行立铣和面铣，以研究刀具损伤和加工加工精度。从所获得的这些结果，已经清楚的是，该材料具有高的耐切削性，并且由于粘合剂剥离，其工具寿命短。少

项目成果

川並 高雄: "真空雰囲気下での温間潤滑圧延"日本鉄鋼協会,材料とプロセス. 14. 1022 (2001)

Takao Kawanami：“真空气氛下的温润滑轧制”日本钢铁研究所，材料和工艺，14. 1022 (2001)。

川並高雄: "真空雰囲気下での温間潤滑圧延"日本鉄鋼協会,材料とプロセス. 14. 1022 (2001)

Takao Kawanami：“真空气氛下的温润滑轧制”日本钢铁研究所，材料和工艺，14. 1022 (2001)。

川並高雄: "サイアロンロールによる真空圧延特性"日本金属学会・日本鉄鋼協会北陸信越支部連合講演会概要集. 76 (2001)

河波隆夫：“使用塞隆辊的真空轧制特性”日本金属学会和日本钢铁学会北陆信越分院联合讲座摘要76（2001）。

川並高雄: "真空雰囲気下での温間潤滑圧延・第2報"日本鉄鋼協会,材料とプロセス. 15. 366 (2002)

Takao Kawanami：“真空气氛下的温润滑轧制 - 第 2 次报告”日本钢铁研究所，材料与工艺，15. 366 (2002)。

川並高雄: "真空雰囲気下におけるアルミニウムの圧延特性"日本鉄鋼協会,第139回春季講演大会・材料とプロセス. 13・2. 336 (2000)

Takao Kawanami：“真空气氛中铝的轧制特性”日本钢铁研究所，第 139 届春季材料和工艺会议 13・2（2000 年）。