飞边量可控的模锻设计技术及其在生产中的应用

此文介绍了一种先使材料充满型腔,然后再让剩余材料流出型腔形成飞边的模缎设计方法。这与先使部分材料流出型腔形成少量飞边,然后利用飞边桥部的阻流作用使材料充满型腔的传统方法完全不同。这两种不同的流动方式可分别称为“先内后外”式(IN-OUT)和“先外后内”式(OUT-IN)。为了实现“先内后外”流动方式,此文采用了反向模拟的技术。文章介绍了有关反向模拟技术的一些问题。为了实现模拟工作的自动化,提出了一种模拟复合块的技术。一个复杂的锻件,只须划分成几个复合块,然后开动第一个复合块,模拟就自动地依次传递进行下去。此文叙述的全部模拟做法都已经过了生产实验。

A Die Forging Design Technique Controlling Flash Formation and Its Application

In this paper, a new die forging technique is presented. it emphasizes that flash forms after metal fills up whole die room. This way is called IN-OUT model. It differs from current design way which prefers to produce and utilize the resistance action resulted by flash formed at the begining of forging process as to assist in filling of die impression. The current way is called OUT-IN model. To realize IN-OUT way of metal flow,the paper in order to automate simulation procedure the paper developed a technique into a few blocks. After starting the first block at the beginig of also continue executing next simulation step until final result of forging process. All mentioned methods were tested in producive practice.