JB/T 58651.12-1999
Fastener Product Quality Grading - Retaining Rings
紧固件产品质量分等 挡圈
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 名词、术语及计算公式 → 4 抽查项目、抽样方案、缺陷等级及加权值 → 5 分等标准 → 6 检验方法 Foreword → 1 Scope → 2 Normative References → 3 Terms, Definitions and Calculation Formulas → 4 Inspection Items, Sampling Plan, Defect Grades and Weighted Values → 5 Grading Standards → 6 Inspection Methods
Scope
This standard specifies the principles and methods for quality grading of retaining ring products manufactured according to national standards and industry standards. It may also be used as a reference for quality grading of retaining ring products manufactured according to other standards. This standard adopts three grades: superior product, first-class product, and qualified product. This standard applies to single-specification product lots accepted in accordance with GB/T 90. The dimensional symbols used in this standard are consistent with the current retaining ring standards.
本标准规定了按国家标准及行业标准生产的挡圈类产品质量分等的原则和方法。按其他标准生产的挡圈类产品进行质量分等时亦可参照使用。 本标准采用三级分等，即优等品、一等品、合格品。 本标准适用于按GB/T 90 接收了的单一规格产品批。 本标准中使用的尺寸代号，均与现行挡圈标准一致。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection departments of retaining rings use this standard to grade and accept product quality. The three-tier grading system (superior, first-class, qualified) helps users clearly understand product quality levels and ensures compliance with national and industry standards. This standard is important for improving the overall quality level of the fastener industry.
挡圈生产企业和质量检验部门使用本标准，对挡圈产品进行质量分等和验收。通过三级分等体系（优等品、一等品、合格品），帮助用户明确产品质量水平，确保产品符合国家标准和行业要求。该标准对提升紧固件行业整体质量水平具有重要意义。
AI Summary AI generated
This standard specifies the principles and methods for quality grading of retaining ring products, adopting a three-tier system of superior, first-class, and qualified products. It applies to retaining rings manufactured according to national and industry standards, and may also be referenced for other standards. The standard defines inspection items, sampling plans, defect grades, and weighted values, and provides grading criteria and inspection methods. By referencing relevant national standards, it ensures consistency and standardization in inspection.
本标准规定了挡圈类产品质量分等的原则和方法，采用优等品、一等品、合格品三级分等体系。适用于按国家标准及行业标准生产的挡圈产品，也可参照用于其他标准的产品。标准明确了抽查项目、抽样方案、缺陷等级及加权值，并给出了分等标准和检验方法。通过引用相关国家标准，确保检验的规范性和一致性。
Key Sentences extracted from text
本标准规定了按国家标准及行业标准生产的挡圈类产品质量分等的原则和方法。
本标准采用三级分等，即优等品、一等品、合格品。
本标准适用于按GB/T 90 接收了的单一规格产品批。
缺陷等级、缺陷加权值和单位缺陷分标准的定义及单位缺陷分的计算公式按JB/T 58651.1 规定。
挡圈产品的质量分等标准按表2 规定。
This standard specifies the principles and methods for quality grading of retaining ring products manufactured according to national standards and industry standards.
This standard adopts three grades: superior product, first-class product, and qualified product.
This standard applies to single-specification product lots accepted in accordance with GB/T 90.
The definitions of defect grade, defect weighted value, and unit defect score standard, as well as the calculation formula for unit defect score, are specified in JB/T 58651.1.
The quality grading standards for retaining ring products are specified in Table 2.
Standard Timeline
Changes from replaced version:
- 对原标准进行了编辑性的修改
- 主要技术内容没有变化
- Editorial modifications were made to the original standard
- The main technical content remained unchanged