1.1 本规程涵盖了根据分类分类的化学和非化学结合硅酸铝和高铝塑料以及捣实混合耐火材料试样的压制和干燥 C673 . 1.2 以英寸-磅单位表示的值应被视为标准值。括号中给出的值仅供参考。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。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》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 3.1 这种做法对于生产均匀的耐火塑料试样和用于标准ASTM测试的捣实混合物非常有用。在制定生产商和用户之间的规格时，由此形成的样品可用于裁判测试。在仲裁测试时，经双方同意确定并在报告中明确成形参数，如样品尺寸、可加工性和成形压力。 3.2 本规程适用于制备各种尺寸的试样。请注意，9英寸乘4英寸 1. / 2. 2英寸 1. / 2. 英寸（228毫米乘114毫米乘64毫米）的样品，由于其横截面较大，在压制、处理和干燥过程中比较小的横截面更容易形成缺陷- 截面样品。 3.3 这种做法的目的是尽量减少压制试样中的缺陷。它并不打算复制所有现场安装条件。 3.4 通过试验方法测定的可加工性变化 C181 可以显著影响试样中包含的缺陷数量。在比较两个实验室之间的测试时，通过双方协议确定可操作性水平。 3.5 本规程不适用于制备基本捣实混合物、无水出料孔混合物或树脂粘结混合物的试样。

1.1 This practice covers the pressing and drying of chemically and non-chemically bonded alumina-silicate and high-alumina plastic and ramming mix refractory specimens classified in accordance with Classification C673 . 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 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 ====== 3.1 This practice is useful for producing uniform specimens of refractory plastics and ramming mixes for use in standard ASTM tests. Samples thus formed may be used for referee testing when setting specifications between producer and user. Establish by mutual agreement and specify in the report the forming parameters such as sample size, workability, and forming pressure when referee testing. 3.2 This practice is applicable for preparing test specimens of various sizes. Note that 9 in. by 4 1 / 2 in. by 2 1 / 2 in. (228 mm by 114 mm by 64 mm) samples, because of their large cross section, have a greater tendency to form flaws during pressing, handling, and drying than smaller cross-sectional samples. 3.3 The purpose of this practice is to minimize flaws in pressed specimens. It is not intended to duplicate all field installation conditions. 3.4 Variations in workability as determined by Test Method C181 can significantly affect the number of flaws contained in a specimen. Establish by mutual agreement the workability level when comparing tests between two laboratories. 3.5 This practice is not intended for preparing specimens of basic ramming mixes, anhydrous tap-hole mixes, nor resin-bonded mixes.