权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Developing a Piercing Technique for Ceramic and Glass Sheets by Utilizing a High Impulsive Pressure

利用高脉冲压力开发陶瓷和玻璃板的穿孔技术

基本信息

批准号：
63550066
负责人：
KUROSAKI Yasushi
金额：
$ 1.41万
依托单位：
Mie University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550066/
关键词：
Nontraditional Piercing Ceramics and Glasses Impulsive High Pressure Viscoplastic Pressure Medium VIP Process VM AFM Process Miro-Hole Piercing Noncircular-Hole Piercing VMプロセスガラス・セラミックスの穴あけ粘塑性圧媒衝撃加工 VIPプロセス高圧砥粒流動加工

项目摘要

Recent, remarkable development of new materials, such as fine ceramics and high-performance glasses, presented a new manufacturing problem. They have hard and brittle quality, and are difficult to work. Though various working processes available for such materials have been developed,they have the common disadvantage of low productivity and high equipment cost, and thus limited applicability.The present research attempted to develop a new piercing technique with no such problem as aforementioned by utilizing a high pressure caused under the impulsive compression of a viscoplastic pressure medium. The method was referred to as VIP Process, and its applicability was examined theoretically and experimentally. Results obtained may be summarized as follows :(1) The original VIP was shown to be successful in piercing a circular hole through four kinds of brittle materials, i. e., two inorganic glasses, GC composite and alumina sheets.(2) A method for estimating the impulsive pressure was presented using a linear viscoelastic model, and its validity was confirmed.(3) The piercing mechanism was clarified by the FEM analysis.(4) An improvement in the probability of successful piercing was given to the original method. As a result, two new methods were proposed, and shown to be useful.(5) From the viewpoint of practical use, a low speed compression method using a hydraulic press machine, referred to as VM Process, was proposed, and its validity was confirmed.(6) The AFM Process was introduced, and shown to be effective for improving the accuracy of the formed holes.(7) Finally, the combined method (VM/AFM or VIP/AFM Process) was proposed, and various special applications were accomplished through inorganic glass sheets : one-shot piercing of plural holes and piercings of noncircular holes and circular fine holes.

近年来，新材料的显著发展，如精细陶瓷和高性能玻璃，提出了一个新的制造问题。它们坚硬易碎，难以加工。虽然已经开发出了各种可用于此类材料的加工工艺，但它们的共同缺点是生产率低，设备成本高，因此适用性有限。本研究试图利用粘塑性压力介质在脉冲压缩下产生的高压，开发一种不存在上述问题的新型穿刺技术。该方法被称为VIP过程，并对其适用性进行了理论和实验验证。结果表明：(1)原VIP可成功穿透两种无机玻璃、气相色谱复合材料和氧化铝片等4种脆性材料的圆孔。(2)提出了一种基于线性粘弹性模型的脉冲压力估计方法，并验证了该方法的有效性。(3)通过有限元分析，阐明了穿孔机理。(4)在原有方法的基础上，提高了穿孔成功率。结果，提出了两种新的方法，并证明了它们的有效性。(5)从实际应用的角度出发，提出了一种利用液压机进行低速压缩的方法，称为VM Process，并验证了其有效性。(6)介绍了AFM工艺，证明了AFM工艺对提高成形孔的精度是有效的。(7)最后，提出了复合工艺（VM/AFM或VIP/AFM工艺），并通过无机玻璃片实现了多种特殊应用：复数孔的一次穿孔、非圆孔和圆细孔的穿孔。