JB/T 53328-1999
Quality Grading for Copper-Based Wet Powder Metallurgy Friction Plates of Loaders
装载机铜基湿式粉末冶金摩擦片 产品质量分等
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 检测方法 → 6 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Quality Grading Principle → 4 Quality Grade Indicators → 5 Test Methods → 6 Inspection Rules
Scope
This standard specifies the product quality grade levels for copper-based wet powder metallurgy friction plates of loaders. This standard is applicable to the quality grade assessment of copper-based wet powder metallurgy friction plates of loaders in quality evaluation, enterprise upgrading, and excellence creation. It can also serve as a basis for high-quality and high-price products.
本标准规定了装载机铜基湿式粉末冶金摩擦片产品质量等级水平。本标准适用于装载机铜基湿式粉末冶金摩擦片产品在质量考核、企业升级和创优中的质量等级评定。亦可作为产品优质优价的依据。
Normative References
Keywords
Application Summary AI generated
Manufacturers of loaders and quality inspection agencies use this standard to grade the quality of friction plates. They classify products into qualified, first-class, and premium grades based on key, major, and general indicators. This standard is important for ensuring consistent quality, promoting technological upgrades, and enabling price differentiation based on quality.
装载机制造商和质量检验机构使用该标准来评定摩擦片的质量等级。他们依据标准中的关键项目、主要项目和一般项目指标，对产品进行合格品、一等品和优等品的分级。该标准对于确保装载机摩擦片的质量一致性、推动企业技术升级和实现优质优价具有重要意义。
AI Summary AI generated
This standard specifies quality grading requirements for copper-based wet powder metallurgy friction plates of loaders, classifying products into qualified, first-class, and premium grades. It details indicators for key items (e.g., dynamic friction coefficient, wear rate, bond strength), major items (e.g., density, hardness, dimensional tolerances), and general items (e.g., appearance, packaging). Test methods reference relevant national standards, and inspection rules define sampling methods and item pass rate criteria. The standard provides a basis for quality assessment, enterprise upgrading, and price differentiation.
本标准规定了装载机铜基湿式粉末冶金摩擦片的质量分等要求，将产品分为合格品、一等品和优等品三个等级。标准详细列出了关键项目（如动摩擦系数、磨损率、粘结强度）、主要项目（如密度、硬度、尺寸公差）和一般项目（如外观、包装）的指标。检测方法引用相关国家标准，检验规则规定了抽样方法和项次合格率评定标准。该标准为产品质量考核、企业升级和优质优价提供了依据。
Key Sentences extracted from text
本标准规定了装载机铜基湿式粉末冶金摩擦片产品质量等级水平。
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。
各等级产品质量水平考核项目分为关键项目、主要项目和一般项目。
动摩擦系数 ≥0.030（合格品），≥0.032（一等品），≥0.040（优等品）。
摩擦材料层磨损率 ≤0.1×10–12 m3/J（合格品），≤0.1×10–13 m3/J（一等品），≤0.1×10–14 m3/J（优等品）。
This standard specifies the product quality grade levels for copper-based wet powder metallurgy friction plates of loaders.
Products are divided into three grades: qualified, first-class, and premium, based on quality level and use value, on the basis of conforming to current standards.
The quality level assessment items for each grade are divided into key items, major items, and general items.
Dynamic friction coefficient ≥0.030 (qualified), ≥0.032 (first-class), ≥0.040 (premium).
Friction material layer wear rate ≤0.1×10–12 m3/J (qualified), ≤0.1×10–13 m3/J (first-class), ≤0.1×10–14 m3/J (premium).
Standard Timeline
Changes from replaced version:
- 修改了第5章检测方法，其它技术内容没有改变
- Revised Chapter 5 on test methods; other technical content unchanged.