1.1 本指南涵盖了铝生产中使用的碳阴极块的取样，并详细说明了从单个阴极块取样的程序。它涵盖了从阴极块中获得样品的设备和程序，其方式不会破坏阴极块或阻止其按最初预期的后续使用。然而，用户必须确定采样阴极块的后续使用。本指南涵盖了从单个阴极块单元中取样的首选位置。 1.1.1 一般来说，成型耐火材料产品的取样信息见ISO 5022.本标准详细说明了货物或批次验收测试抽样计划的统计依据。铝生产中使用的阴极块有特定的取样要求，而ISO中给出的取样统计依据 5022适用，进一步或修改的要求也可能适用。 1.2 以国际单位制表示的数值应视为标准。 本标准中不包括其他计量单位。 注1: 以下ASTM标准是有用信息的来源:试验方法 C559 ， C611 ， C651 ， C747型 ， 2025年 ， 公元1039年 和 225英镑 。 1.3 本标准并非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。 1.4 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====== 4.1 取芯是在不破坏阴极块有用性的情况下获得试样的一种可接受的方法。 4.1.1 根据本指南获得的试样可供阴极块的生产商和用户用于在 注1 以获得比较物理性质。 4.2 取样不得削弱阴极块或增加过早失效的可能性。采集垂直钻孔样品时应格外小心。

1.1 This guide covers sampling of carbon cathode blocks used in the production of aluminum, and details procedures for taking samples from single cathode blocks. It covers equipment and procedures for obtaining samples from cathode blocks in a manner that does not destroy the cathode block or prevent its subsequent use as originally intended. However, the user must determine the subsequent use of the sampled cathode blocks. Preferred locations for taking samples from single units of cathode blocks are covered in this guide. 1.1.1 Information for sampling of shaped refractory products, in general, is given in ISO 5022. This standard details the statistical basis for sampling plans for acceptance testing of a consignment or lot. Cathode blocks used in the production of aluminum have specific requirements of sampling, and while the statistical basis for sampling given in ISO 5022 applies, further or modified requirements may also apply. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Note 1: The following ASTM standards are noted as sources of useful information: Test Methods C559 , C611 , C651 , C747 , C1025 , C1039 , and C1225 . 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 ====== 4.1 Core sampling is an acceptable way of obtaining a test specimen without destroying the usefulness of a cathode block. 4.1.1 Test specimens obtained by this guide can be used by producers and users of cathode blocks for the purpose of conducting the tests in Note 1 to obtain comparative physical properties. 4.2 Sampling shall not weaken the cathode block or increase the likelihood of premature failure. Extreme care shall be exercised when taking vertically drilled samples.