JB/T 58800-1999
Product Quality Grading for Sintered Metal Friction Plates and Counter Plates for Aircraft Brakes (Internal Use)
飞机刹车用烧结金属摩擦片和对偶片产品质量分等（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 检测方面 → 6 检验规定 Foreword → 1 Scope → 2 Normative References → 3 Principles of Quality Grading → 4 Quality Grade Indicators → 5 Testing Aspects → 6 Inspection Provisions
Scope
This standard specifies the product quality grade levels for sintered metal friction plates and counter plates used in aircraft brakes. This standard is applicable to the quality grade assessment of sintered metal friction plates and counter plates for aircraft brakes.
本标准规定了飞机刹车用烧结金属摩擦片和对偶片产品质量等级水平。本标准适用于飞机刹车用烧结金属摩擦片和对偶片产品质量等级评定。
Normative References
Keywords
Application Summary AI generated
Aircraft manufacturers and maintenance organizations use this standard to grade the quality of sintered metal friction plates and counter plates for aircraft brakes. By classifying products into qualified, first-grade, and premium-grade levels, it ensures the performance, reliability, and safety of brake components. This standard is critical for maintaining effective braking during landing and taxiing.
飞机制造商和维修单位使用该标准来评定飞机刹车用烧结金属摩擦片和对偶片的质量等级。该标准通过划分合格品、一等品和优等品，确保刹车组件的性能、可靠性和安全性。它对于保障飞机着陆和滑行过程中的制动效能至关重要。
AI Summary AI generated
This standard specifies quality grading requirements for sintered metal friction plates and counter plates used in aircraft brakes, classifying products into three grades: qualified, first-grade, and premium-grade. It details indicators for key items (e.g., thermal stability test, friction coefficient, wear rate), main items (e.g., apparent hardness, density, bond quality), and general items (e.g., appearance, flatness, packaging). Testing methods reference relevant standards, and sampling and evaluation rules are provided. This standard replaces JB/T 58800-93, with major technical changes including cancellation of a referenced standard, modification of wear terminology, adjustment of hardness pass rates, and changes to appearance quality criteria.
本标准规定了飞机刹车用烧结金属摩擦片和对偶片的质量分等要求，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（如热稳定试验、摩擦系数、磨损率）、主要项目（如表观硬度、密度、粘结质量）和一般项目（如外观质量、平面度、包装）的指标。检测方法引用相关标准，并规定了抽样和评定规则。该标准替代了JB/T 58800-93，主要技术变化包括取消原引用标准、调整磨损量术语、修改硬度合格率及外观质量指标等。
Key Sentences extracted from text
本标准规定了飞机刹车用烧结金属摩擦片和对偶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。
关键项目指标应符合表1 的规定。
主要项目指标应符合表2 的规定。
一般项目指标应符合表3 的规定。
This standard specifies the product quality grade levels for sintered metal friction plates and counter plates used in aircraft brakes.
On the basis of compliance with current standards, products are divided into three grades: qualified product, first-grade product, and premium-grade product, according to quality level and use value.
Key item indicators shall comply with the provisions of Table 1.
Main item indicators shall comply with the provisions of Table 2.
General item indicators shall comply with the provisions of Table 3.
Standard Timeline
Changes from replaced version:
- 取消原引用标准中的“GB 3850《致密烧结金属摩擦材料与硬度和密度测定》”
- 原表1 中“磨损量”改为“磨损率”
- 原表2 中，表观硬度一行“85%，90%，95%”分别改为“80%，90%，90%”
- 原表3 中，外观质量合格品、一等品质量指标分别改为“允许有不大于5 mm2 的粉末层局部脱落；允许有不大于3 mm2 的粉末层局部脱落”
- 取消原5.4
- Canceled the referenced standard 'GB 3850 Dense Sintered Metal Friction Materials and Determination of Hardness and Density'
- Changed 'wear amount' to 'wear rate' in original Table 1
- In original Table 2, changed the apparent hardness row from '85%, 90%, 95%' to '80%, 90%, 90%'
- In original Table 3, changed the appearance quality indicators for qualified and first-grade products to 'local powder layer detachment not exceeding 5 mm2 allowed; local powder layer detachment not exceeding 3 mm2 allowed'
- Canceled original section 5.4