JB/T 54484-1999
Spring Collet - Product Quality Grading
弹簧夹头 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Quality Grades → Appendix A
Scope
This standard specifies the quality requirements for qualified products, first-grade products, and premium-grade products of spring collets. This standard applies to the quality grading and classification of spring collet products.
本标准规定了弹簧夹头的合格品、一等品和优等品的质量要求。本标准适用于弹簧夹头产品的质量分等定级。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies use this standard to grade spring collets into qualified, first-grade, or premium-grade categories. It guides production quality control and market pricing by defining clear quality thresholds. This standard helps improve product quality and supports a mechanism where higher quality commands higher prices.
弹簧夹头制造商和质检机构使用本标准对产品进行质量分等定级。它用于确定产品属于合格品、一等品还是优等品，从而指导生产控制和市场定价。该标准通过明确不同等级的质量指标，促进了产品质量提升和优质优价机制的实施。
AI Summary AI generated
This standard specifies quality grading requirements for spring collets, classifying them into three grades: qualified, first-grade, and premium-grade. It defines specific criteria for each grade regarding heat treatment hardness, metallographic structure, accuracy reserve, and pass rates of main items, referencing standards such as JB/T 5542 and JB/T 5556. The standard is used for quality assessment and grading of spring collets, supporting a quality-based pricing system.
本标准规定了弹簧夹头产品的质量分等要求，将产品分为合格品、一等品和优等品三个等级。标准明确了各等级在热处理硬度、金相组织、精度储备量、主要项目合格率等方面的具体指标，并引用JB/T 5542、JB/T 5556等相关标准。适用于弹簧夹头的质量考核和分等定级，为优质优价提供依据。
Key Sentences extracted from text
本标准规定了弹簧夹头的合格品、一等品和优等品的质量要求。
弹簧夹头热处理硬度的合格率应大于90%。
弹簧夹头热处理金相组织应符合JB/T 9986的规定。
精度应使抽样产品的90%具有20%的储备量。
主要项目的合格率不低于95%。
This standard specifies the quality requirements for qualified products, first-grade products, and premium-grade products of spring collets.
The pass rate of heat treatment hardness of spring collets shall be greater than 90%.
The metallographic structure of heat-treated spring collets shall comply with the provisions of JB/T 9986.
The accuracy shall ensure that 90% of the sampled products have a reserve of 20%.
The pass rate of main items shall not be less than 95%.
Standard Timeline
Changes from replaced version:
- 仅对原标准作了编辑性修改，主要技术内容未变
- Only editorial modifications were made to the original standard; the main technical content remains unchanged.