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FABRICATION OF FUNCTIONAL COMPOSITE PLATES AND IRREGULAR SHAPE PARTS BY DIFFERENTIAL SPEED ROLLING

差速轧制功能复合板材及异型件

基本信息

批准号：
06650155
负责人：
MASAKI Saiji
金额：
$ 1.28万
依托单位：
OSAKA INSTITUTE OF TECHINOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06650155/
关键词：
Differential speed rolling Electrolytic copper powder Plate thickness Relative density Rolling load Velocith field of powder Composite plate Irregular shape part ステンレスパンチング板銅粉末パ-マロイ複合体 CCDカメラ伸びひずみ金属粉末水噴霧銅粉末薄板粉末の成形

项目摘要

Differential speed rolling of an electrolytic copper powder was conducted under conditions of carefully controlled powder feed volume. Roll speed ratios are changed in the range from 1.00 to 1.50 by choosing roll revolutions or combinations of roll diameters. The rolling load increases with an increase in the ratio of the powder feed volume to the strip speed. The strip thickness increases with increasing the rolling load for each roll gap regardless of the roll speed ratio. The relative density of the strip is grater than that achieved by conventional rolling.Differential speed rolling of powder was analyzed using the mechanics of powder compacting and a proposed velocity field utilizing for conventional or differential speed rolling of the powder. The thickness and density of the strips and the rolling load were obtained. Combined with the mill spring, it is possible to predict the thickness and rolling load using the electrolytic copper powder. The predicted results agree well with the above experimental results obtained.The above mentioned results were applied to make a composite plate and functional irregular plate or machine parts. Simultaneous rolling of a punching plate made of stainless steel and an electrolytic copper powder was conducted by choosing the roll speeds. The composite plate with a high strength and a low thermal resistance or the functional machine parts with an irregular shape was easily fabricated.

在严格控制送粉量的条件下，对电解铜粉进行了差速轧制。通过选择轧辊转速或轧辊直径组合，可以在1.00到1.50的范围内改变轧辊速比。轧制力随送粉量与带钢速度之比的增大而增大。无论辊速比如何，随着每个辊缝的轧制力的增加，带钢厚度都会增加。利用粉末压实机理对粉末差速轧制进行了分析，提出了适用于粉末常规轧制和差速轧制的速度场。得到了带钢的厚度、密度和轧制力。结合轧机弹簧，可以利用电解铜粉来预测厚度和轧制力。预测结果与实验结果吻合较好。将上述结果应用于复合板和功能异形板或机械零件的制造。通过选择轧制速度，实现了不锈钢和电解铜粉冲压板材的同步轧制。高强度、低热阻的复合板或形状不规则的功能机械零件易于制造。