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  4. ASTM C621-84(2001)

ASTM C621-84(2001) Standard Test Method for Isothermal Corrosion Resistance of Refractories to Molten Glass

耐火材料对熔融玻璃耐等温腐蚀性的标准试验方法

基本信息

标准号
ASTM C621-84(2001)
标准状态
历史
发布单位或类别
美国-美国材料与试验协会(US-ASTM);
发布日期
-
实施日期
-
废止日期
-
CCS分类
-
ICS分类
81.080 玻璃和陶瓷工业 - 耐火材料

研制信息

起草单位
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起草人
-
归口单位
C08.10

摘要

1.1 This test method covers the determination of the corrosion resistance of refractories in contact with molten glass under static, isothermal conditions.1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are provided for information only.1.3This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ======This test method provides a rapid, inexpensive method for comparing the corrosion resistance of refractories. The isothermal conditions of this test method represent the most severe static corrosion environment possible at the specified test temperature. This test method is suitable for quality control, research and development applications, and for product value studies on similar materials. Tests run at a series of temperatures are often helpful in determining the use temperature limitations of a particular material. Melt-line corrosion results are also a useful indication of relative resistance to both upward and downward drilling corrosion mechanisms. Examination of test specimens also provides information about the tendency for a particular refractory to form stones or other glass defects.Because this test method is both isothermal and static and since most glass-contact refractories operate in a dynamic system with a thermal gradient, test results do not directly predict service in a furnace. The effects of differing thermal conductivities, refractory thickness, artificial cooling or insulation upon the refractory thermal gradient, and the erosive action of moving molten glass currents are not evaluated with this test. 1.1本试验方法包括在静态、等温条件下测定与熔融玻璃接触的耐火材料的耐腐蚀性。1.2以英寸-磅为单位的数值应视为标准值。括号中的值仅供参考。1.3本标准可能涉及危险材料、操作和设备。本标准并非旨在解决与其使用相关的所有安全问题。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。====意义和用途======该试验方法为比较耐火材料的耐腐蚀性提供了一种快速、廉价的方法。本试验方法的等温条件代表了在规定试验温度下可能出现的最严重静态腐蚀环境。该测试方法适用于质量控制、研发应用以及类似材料的产品价值研究。在一系列温度下进行的测试通常有助于确定特定材料的使用温度限制。熔线腐蚀结果也是向上和向下钻井腐蚀机制相对阻力的有用指示。对试样的检查还提供了有关特定耐火材料形成石块或其他玻璃缺陷的趋势的信息。因为这种测试方法是等温和静态的，而且大多数玻璃-接触耐火材料在具有热梯度的动态系统中运行，测试结果不能直接预测在炉中的使用情况。本试验未评估不同导热系数、耐火材料厚度、人工冷却或绝缘对耐火材料热梯度的影响，以及移动熔融玻璃电流的侵蚀作用。 展开▼

关联标准

代替如下标准
1.ASTM C621-84(1995) Standard Test Method for Isothermal Corrosion Resistance of Refractories to Molten Glass。
被如下标准代替
1. ASTM C621-09 Standard Test Method for Isothermal Corrosion Resistance of Refractories to Molten Glass。

相似标准

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