1.1 本试验方法包括观察由煤和焦灰制备的三角锥（锥体）在受控、轻度还原和需要时的氧化气氛中以规定的速率加热时达到并通过特定的熔融和流动阶段的温度。 1.2 试验方法是经验的，必须严格遵守要求和条件，才能获得可重复的温度，并使不同的实验室能够获得一致的结果。 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。 每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.3.1 除非另有说明，否则所有百分比均为质量分数百分比。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 大多数煤燃烧和煤转化设备的设计预计，根据特定的设计，灰要么保持固体，要么呈现一定程度的流动性。灰的熔融性温度有助于预测灰在选择煤的过程中是否能正常工作。 5.2 灰熔融性温度值用于各种方程中，以预测灰的结渣趋势。

1.1 This test method covers the observation of the temperatures at which triangular pyramids (cones) prepared from coal and coke ash attain and pass through certain defined stages of fusing and flow when heated at a specified rate in controlled, mildly reducing, and where desired, oxidizing atmospheres. 1.2 The test method is empirical, and strict observance of the requirements and conditions is necessary to obtain reproducible temperatures and enable different laboratories to obtain concordant results. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3.1 All percentages are percent mass fractions unless otherwise noted. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The design of most coal combustion and coal conversion equipment anticipates that the ash either remain solid or assume some degree of fluidity, depending on the particular design. Ash fusibility temperatures help predict whether the ash will perform properly in the process for which the coal was chosen. 5.2 Ash fusibility temperature values are used in various equations to predict the slagging tendency of ashes.