JB/T 53392-1999
Flexible Graphite Sheets - Product Quality Grading (Internal Use)
柔性石墨板 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 → 4 试验方法 → 5 抽样方法 → 6 判定方法 Foreword → 1 Scope → 2 Normative References → 3 Quality Grades → 4 Test Methods → 5 Sampling Methods → 6 Judgment Methods
Scope
This standard specifies the quality grades, test methods, sampling, and judgment methods for flexible graphite sheets. This standard is mainly applicable to flexible graphite sheets, and also to flexible graphite tapes.
本标准规定了柔性石墨板的质量等级、试验方法及抽样、判定方法。本标准主要适用于柔性石墨板，也适用于柔性石墨带。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection departments in the machinery industry use this standard to classify and judge the quality grades of flexible graphite sheets and tapes. It ensures product reliability and consistency by specifying performance indices and test methods for qualified, first-grade, and premium products.
机械行业的生产企业和质量检验部门使用本标准来对柔性石墨板及柔性石墨带进行质量等级划分和合格判定。它通过规定具体的性能指标和试验方法，确保产品达到合格品、一等品或优等品的要求，从而保障密封材料的可靠性和一致性。
AI Summary AI generated
This standard JB/T 53392-1999 specifies quality grades, test methods, sampling, and judgment rules for flexible graphite sheets (and tapes). Products are classified into three grades: qualified, first-grade, and premium, each with different requirements for density deviation, tensile strength, compression rate, recovery rate, stress relaxation rate, ash content, thermal weight loss, sulfur content, and chlorine content. Ash content and density deviation are main items, while others are key items. Any unqualified item leads to rejection; when spanning grades, the lowest key item grade applies. Test and sampling methods reference JB/T 7758.2-1995.
本标准JB/T 53392-1999规定了柔性石墨板（及带）的质量等级、试验方法、抽样和判定规则。产品分为合格品、一等品和优等品三个等级，各等级对密度偏差、抗拉强度、压缩率、回弹率、应力松弛率、灰份、热失重、硫含量和氯含量等性能指标有不同要求。灰份和密度偏差为主要项，其余为关键项。判定时，任何一项不合格即判为不合格；跨等级时按关键项最低等级判定。试验和抽样方法引用JB/T 7758.2-1995。
Key Sentences extracted from text
本标准规定了柔性石墨板的质量等级、试验方法及抽样、判定方法。
柔性石墨板根据其质量水平分为合格品、一等品和优等品三个等级，各等级产品的性能指标要求按表1 规定。
各性能指标中，灰份、密度偏差为主要项，其余为关键项。
按本标准规定逐项进行检查，各性能中有一项不合格则判为不合格品。
各性能指标跨不同等级时，按关键项最低等级判定。
This standard specifies the quality grades, test methods, sampling, and judgment methods for flexible graphite sheets.
Flexible graphite sheets are divided into three grades according to their quality level: qualified product, first-grade product, and premium product; the performance index requirements for each grade are specified in Table 1.
Among the performance indices, ash content and density deviation are the main items, and the rest are key items.
Inspection shall be carried out item by item according to this standard; if any one of the performance items is unqualified, the product shall be judged as unqualified.
When performance indices span different grades, judgment shall be based on the lowest grade of the key items.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改，主要技术内容没有变化。
- Editorial modifications were made to the original standard, with no changes to the main technical content.