Study on Mold filling Process or Casting with Rapid Data Acquisition System

Xu Qingyan

doi:10.15980/j.tzzz.2000.03.014

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Study on Mold filling Process or Casting with Rapid Data Acquisition System
Issue 3, Pages: 31-34(2000)
Published： 2000 ，
DOI： 10.15980/j.tzzz.2000.03.014

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[1]许庆彦,张光跃,李锋军,熊守美,柳百成,张殿德.用快速数据采集系统研究铸件充型过程[J].特种铸造及有色合金,2000(03):31-34+1.

Xu Qingyan. Study on Mold filling Process or Casting with Rapid Data Acquisition System. [J]. Special Casting & Nonferrous Alloys (3):31-34(2000)
[1]许庆彦,张光跃,李锋军,熊守美,柳百成,张殿德.用快速数据采集系统研究铸件充型过程[J].特种铸造及有色合金,2000(03):31-34+1. DOI： 10.15980/j.tzzz.2000.03.014.

Xu Qingyan. Study on Mold filling Process or Casting with Rapid Data Acquisition System. [J]. Special Casting & Nonferrous Alloys (3):31-34(2000) DOI： 10.15980/j.tzzz.2000.03.014.

摘要

采用自行研制的 32通道快速微机数据采集系统对铸造充型过程的流场进行了试验研究。该系统具有采集速度快、数据精度高、测试通道较多、数据处理方便等特点

可以在 4 .8ms内扫描全部通道

每个通道采样点均在 4 50 0点以上。系统程序采用C ++语言和面向目标方法编写

利用整型存储法、动态内存分配及使用扩展内存解决了内存不足的问题。应用该系统对铝合金和球铁在普通砂型铸造和消失模铸造时的充型过程分别进行了测试

成功地记录了充型过程中迅速变化的温度场

并依据测试点的温度变化规律

求出了金属液到达测试点的时间、温度

得到了金属液在型腔中的充填次序。

Abstract

Study on flow field during molding filling process of liquid metal with self-developed 32-channel rapid data acquisition system was carried out. The data acquisition system has the merit of high acquisition speed

high data accuracy

more test channel

easy data processing. It can scan all channels in 4. 8 ms and total numbers of sample data per channel reach 4500 points. System software was developed with C++language and object-oriented programming method

in which memory insufficient problem was solved with integer data storing

dynamic memory allocation and extent memory use. Mold filling process in sand casting and lost foam casting for aluminum alloy and spheroidal graphite cast iron is measured by using this system. Rapid Variation of temperature field during mold filling process is recorded successfully. Based on the recorded temperature-time variation rule in the measured points

the filling Sequence of molten metal in the mold could be derived.