JB/T 53334-1999
Powder Metallurgy Automotive Shock Absorber Parts - Product Quality Grading (Internal Use)
粉末冶金汽车减震器零件 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量分等原则 → 4 质量等级指标 → 5 试验方法 → 6 抽样方法 Foreword → 1 Scope → 2 Normative References → 3 Quality Grading Principles → 4 Quality Grade Indicators → 5 Test Methods → 6 Sampling Methods
Scope
This standard specifies the product quality grade levels for powder metallurgy S30 series automotive shock absorber parts. This standard is applicable to the product quality grade assessment of powder metallurgy S30 series automotive shock absorber parts in quality evaluation, enterprise upgrading, and product excellence creation. It can also serve as a basis for high-quality and high-price products.
本标准规定了粉末冶金S30 系列汽车减震器零件产品质量等级水平。本标准适用于粉末冶金S30 系列汽车减震器零件在质量考核、企业升级和产品创优中的产品质量等级评定。亦可作为产品优质优价的依据。
Normative References
Keywords
Application Summary AI generated
Manufacturers of automotive shock absorber parts use this standard to grade the quality of powder metallurgy S30 series components. Quality inspectors rely on it to classify products into qualified, first-grade, and superior levels for enterprise evaluation and product excellence. This standard provides a unified quality grading framework, enhancing product competitiveness and market credibility.
汽车减震器零件制造商使用本标准来评定粉末冶金S30系列零件的质量等级。质检人员依据本标准对产品进行合格品、一等品和优等品的分级，用于企业质量考核和产品创优。本标准为行业提供了统一的质量分等依据，有助于提升产品竞争力和市场信誉。
AI Summary AI generated
This standard specifies the product quality grading requirements for powder metallurgy S30 series automotive shock absorber parts, classifying products into three grades: qualified, first-grade, and superior. It details specific indicators for key, main, and general items, including oil-impregnated density, hardness, metallographic structure, dimensional tolerances, geometric tolerances, and service life. The standard also defines test methods, sampling procedures, and evaluation rules, providing a unified basis for quality assessment, enterprise upgrading, and product excellence in the automotive shock absorber parts industry.
本标准规定了粉末冶金S30系列汽车减震器零件的产品质量分等要求，将产品分为合格品、一等品和优等品三个等级。标准详细列出了关键项目、主要项目和一般项目的具体指标，包括含油密度、硬度、金相组织、尺寸公差、形位公差和寿命等。同时规定了试验方法、抽样方法和评定规则，为汽车减震器零件的质量考核、企业升级和产品创优提供了统一依据。
Key Sentences extracted from text
本标准规定了粉末冶金S30 系列汽车减震器零件产品质量等级水平。
产品在符合现行标准的基础上，根据质量水平和使用价值分为合格品、一等品和优等品三个等级。
关键项目必须全部达到该等级的各项规定指标。
主要项目指标 优等品 按规定的项目指标，项次合格率必须达到95%，但不合格项次指标不得低于一等品的指标，且在同一项目中不合格项次不准多于2 个。
一般项目指标 优等品 按规定的项目指标，项次合格率必须达到90%，但不合格项次指标不得低于一等品的指标，且在同一项目中不合格项次不准多于2 个。
This standard specifies the product quality grade levels for powder metallurgy S30 series automotive shock absorber parts.
On the basis of conforming to current standards, products are divided into three grades: qualified product, first-grade product, and superior product according to quality level and use value.
Key items must fully meet all specified indicators for that grade.
For main item indicators: superior product must achieve a 95% item pass rate according to specified indicators, but the indicators of failed items must not be lower than those of first-grade product, and no more than 2 failed items are allowed in the same item.
For general item indicators: superior product must achieve a 90% item pass rate according to specified indicators, but the indicators of failed items must not be lower than those of first-grade product, and no more than 2 failed items are allowed in the same item.
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.