1.1 本试验方法包括在本试验方法规定的条件下，通过比较试验锥与标准高温锥，测定耐火粘土、耐火粘土砖、高铝砖和硅质耐火粘土耐火砂浆的高温锥当量（PCE）。 1.2 单位- 以英寸-磅单位表示的数值应视为标准值。括号中给出的数值是国际单位制的数学转换，仅供参考，不被视为标准。 1.2.1 例外情况- 某些重量单位为国际单位制，括号内为英寸磅。此外，某些数字的SI单位没有括号。这些国际单位制单位应视为标准单位。 1.3 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 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》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 由于时间、温度和大气的影响，圆锥的变形和终点对应于特定的热功条件。 5.2 该测试方法的精度受到许多难以控制的变量的影响。因此，当PCE值用于规范目的时，可能需要经验丰富的操作员。 5.3 PCE值用于对耐火粘土和高铝耐火材料进行分类。 5.4 这是识别粘土变化、采矿控制和制定原材料规范的有效方法。 5.5 虽然不推荐，但该试验方法有时适用于耐火粘土和高铝以外的材料。 此类实践应限于内部实验室，不得用于规范目的。

1.1 This test method covers the determination of the pyrometric cone equivalent (PCE) of fire clay, fireclay brick, high-alumina brick, and silica fire clay refractory mortar by comparison of test cones with standard pyrometric cones under the conditions prescribed in this test method. 1.2 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.2.1 Exceptions— Certain weights are in SI units with inch-pound in parentheses. Also, certain figures have SI units without parentheses. These SI units are to be regarded as standard. 1.3 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. 1.4 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 deformation and end point of a cone corresponds to a certain heat-work condition due to the effects of time, temperature, and atmosphere. 5.2 The precision of this test method is subject to many variables that are difficult to control. Therefore, an experienced operator may be necessary where PCE values are being utilized for specification purposes. 5.3 PCE values are used to classify fireclay and high-alumina refractories. 5.4 This is an effective method of identifying fireclay variations, mining control, and developing raw material specifications. 5.5 Although not recommended, this test method is sometimes applied to materials other than fireclay and high alumina. Such practice should be limited to in-house laboratories and never be used for specification purposes.