The defects that easy occurred in heavy section ductile iron castings as well as the prevention measures were reviewed.
概述了厚大断面球墨铸铁件易产生的几种缺陷及防止措施。
The validity of the apparatus to the research on the solidification behavior of ductile iron with heavy section was verified.
验证了这一装置对于厚大断面球铁铸件研究的有效性。
The producing process of a kind of micro-chill suitable for suspension casting of heavy section ductile iron is briefly described.
简要介绍了一种适合于大断面球铁悬浮铸造用微型冷铁的制备工艺；
A small apparatus used for simulating cooling environment of heavy section ductile iron castings was developed by authors themselves.
自行研制了模拟厚大铸件的冷却环境的小型凝固装置。
In this paper a macro-cracking in the medium casing which is a heavy section casting of 261 turbogenerator was investigated by SEM, EDAX and others.
采用扫描电镜断口分析、微区能谱分析等方法研究了261汽轮机中汽缸大型铸件开裂问题。
The design characteristics, foundry technology and ultrasonic test method of heavy section ductile iron bearings for steam turbines was described and analyzed.
分析了汽轮机厚断面球铁件轴承座的设计特点、铸造技术和超声波探伤。
Solidification microstructures in heavy section high manganese steel casting were simulated using coupling cellular automaton(CA)and finite element method(FEM).
采用元胞自动机与有限元相耦合的方法模拟厚断面高锰钢铸件凝固组织。
This study result widens the processing limit of cross wedge rolling and is of momentous significance to develop heavy section shrinkage products of cross wedge rolling.
该研究拓宽了楔横轧加工界限，对大断面收缩率产品的开发有重要意义。
A difficult foundry problem about the cast shaping of the small and deep holes in the heavy section steel castings can be solved by using the no bake sand. for making cores.
用这种型砂制作型芯，可解决厚大铸钢件内不易铸出的小径深孔腔室的成形难题。
The quality problems which may be met when using furan sand mould to produce large nodular iron crankshaft with heavy section and the measures to solve the problems were described.
介绍用呋喃树脂自硬砂型生产大型球铁曲轴时遇到的质量问题以及工艺对策。
The test results might be useful to similar projects in the area of dead-weight collapse loess with heavy section and to revise "Code for building construction in collapsible loess regions".
试验成果可作为今后大厚度自重湿陷性黄土地区工程建设以及黄土规范进一步修订的参考。
The test results might be useful to similar projects in the area of dead-weight collapse loess with heavy section and to revise "Code for building construction in collapsible loess regions".
试验成果可作为今后大厚度自重湿陷性黄土地区工程建设以及黄土规范进一步修订的参考。
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