使用三角试块.doc

使用三角试块
重新提起重视: often forgotten as a means to measure ductile iron nucleation
potential, foundries can turn to chill wedges as a simple tool to ensure melt quality 总是被人遗忘的测量球铁成核潜力的一种方法,铸造厂可以将三角试块测试作为确定熔
炼质量的一个简便工具
To most iron foundries today, the value of chill wedges in cast iron production is in their ability to provide quick and inexpensive checks of the carbon equivalent in gray iron. Even with the
adoption of spectrometers by many foundries for the chemical analysis of iron samples, small to medium-size gray iron foundries still rely on chill wedges for cost-efficient analysis.
对于如今的大部分铸造厂来说,确定灰铁的碳含量,冷铁测试是比较快且成本低的一种
方式。即使现在很多铸造厂采用光谱仪的方式来对铸铁样件进行化学分析,一些中小灰铁铸造厂仍然以来三角试块测试进行分析,比较经济核算。
By measuring the width of the chill on a solidified wedge sample, foundries can determine the
relative carbon equivalent in the cast sample. If necessary, the width of
the chill then can be
adjusted by adding carbon and/or silicon to the melt to further specify the melt chemistry for the casting to be poured. By correlating the chill width to the section thickness of the casting being poured, a foundry can be assured of pouring carbide free gray iron.
根据测量一个三角试块的冷铁宽度,就可以确定相关铸件的碳当量。如果必要,冷铁宽度可以通过加碳和(或)硅的方式来调节,进一步符合所浇铸件的熔炼化学要求。可以将冷铁宽度和所浇铸件界面厚度联系起来,铸造厂就可以确定灰铁中所浇游离碳。
Ductile Iran Problems Without Solutions未解决的球铁问题
Iron foundries always have been cautioned against repeatedly