JB/T 53329-1999
Forging press clutch copper-based dry friction plate - Product quality grading
锻压机床离合器铜基干式摩擦片 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 dry friction plates for forging press clutches. This standard is applicable to the quality grade assessment of copper-based dry friction plates for forging press clutches in quality evaluation, enterprise upgrading, and excellence creation. It can also serve as a basis for high-quality and high-price products.
本标准规定了锻压机床离合器铜基干式摩擦片产品质量等级水平。本标准适用于锻压机床离合器铜基干式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 forging presses and friction plate producers use this standard to grade the quality of copper-based dry friction plates for clutches. It helps enterprises determine whether a product qualifies as acceptable, first-class, or premium during quality evaluations and upgrades, guiding production improvements and pricing. This standard is crucial for ensuring the reliability and longevity of forging press clutches.
锻压机床制造商和摩擦片生产企业使用本标准来评定离合器铜基干式摩擦片的质量等级。该标准帮助企业在质量考核、升级和创优中确定产品属于合格品、一等品还是优等品，从而指导生产改进和优质优价。它对于确保锻压机床离合器的可靠性和寿命至关重要。
AI Summary AI generated
This standard specifies the quality grading requirements for copper-based dry friction plates used in forging press clutches, classifying products into three grades: acceptable, first-class, and premium. Key indicators include dynamic and static friction coefficients, wear rate, and bonding strength; main items cover density, hardness, tooth profile tolerance, parallelism, and flatness; general items include surface quality and packaging. The standard is used for quality evaluation, enterprise upgrading, and excellence creation, and serves as a basis for high-quality pricing.
本标准规定了锻压机床离合器铜基干式摩擦片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。关键指标包括动、静摩擦系数、磨损率和粘结强度；主要项目涉及密度、硬度、齿形公差、平行度和平面度；一般项目涵盖表面质量、包装等。标准适用于质量考核、企业升级和创优，并可作为优质优价的依据。
Key Sentences extracted from text
本标准规定了锻压机床离合器铜基干式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。
动摩擦系数µd：合格品≥0.20，一等品≥0.27，优等品≥0.35。
磨损率：合格品≤3×10–13 m3/J，一等品≤6×10–14 m3/J，优等品≤4×10–14 m3/J。
粘结强度：摩擦层与钢芯板粘结牢固。
This standard specifies the product quality grade levels for copper-based dry friction plates for forging press clutches.
Products are divided into three grades: acceptable, first-class, and premium, based on quality level and use value, on the basis of compliance with current standards.
Dynamic friction coefficient µd: acceptable ≥0.20, first-class ≥0.27, premium ≥0.35.
Wear rate: acceptable ≤3×10–13 m3/J, first-class ≤6×10–14 m3/J, premium ≤4×10–14 m3/J.
Bonding strength: The friction layer is firmly bonded to the steel core plate.
Standard Timeline
Changes from replaced version:
- 取消了对齿厚精度和公法线长度变动量的测量，增加了对齿形尺寸公差的测量
- 单片表观硬度差的等级指标由原来的≤15、≤12、≤10 改为≤20、≤15、≤10
- 平行度和平面度的精度按摩擦片直径大小划分，作出具体规定
- Cancelled the measurement of tooth thickness accuracy and variation of common normal length, added measurement of tooth profile dimensional tolerance
- The grade indicators for single-piece apparent hardness difference were changed from original ≤15, ≤12, ≤10 to ≤20, ≤15, ≤10
- The accuracy of parallelism and flatness is divided according to the diameter of the friction plate, with specific provisions made