原文标准名称：熔融玻璃耐耐火材料等温腐蚀的标准试验方法

英文标准名称：Standard Test Method for Isothermal Corrosion Resistance of Refractories to Molten Glass

中文主题词：耐火材料;玻璃;耐腐蚀性

英文主题词：corrosion;crucible;finger;glass;glass-line;cut;iso-thermal;metal-line cut;refractory;static

标准号：ASTM C621-1984(2001)

标准状态：现行

国别：

发布日期：1984-06-06

实施或试行日期：

发布单位：美国材料与试验协会(US-ASTM)

起草单位：C08.10

标准类型：方法

标准水平：

中国标准分类号：Q40

国际标准分类号：81_080

页数：0

正文语种：

内容简介

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 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. 1.3 This 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.