JB/T 58552-1999
Silicon Carbide Seal Rings for Mechanical Seals - Product Quality Grading (Internal Use)
机械密封用碳化硅密封环 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 → 4 试验方法 → 5 抽样方法 → 6 评定方法 Foreword → 1 Scope → 2 Normative References → 3 Quality Grades → 4 Test Methods → 5 Sampling Methods → 6 Evaluation Methods
Scope
This standard specifies the product quality grades, test, sampling and evaluation methods for silicon carbide seal rings for mechanical seals. This standard applies to reaction-sintered, pressureless-sintered, and hot-pressed silicon carbide seal rings for mechanical seals (hereinafter referred to as seal rings).
本标准规定了机械密封用碳化硅密封环产品质量等级，试验、抽样和评定方法。本标准适用于机械密封用反应烧结、无压烧结、热压烧结碳化硅密封环（以下简称密封环）。
Normative References
Keywords
Application Summary AI generated
Manufacturers and users of mechanical seals use this standard to classify and inspect the quality of silicon carbide seal rings. It helps ensure reliability and performance consistency by defining three quality grades: qualified, first-grade, and premium. This standard is critical for improving the service life of mechanical seal systems and reducing leakage risks.
机械密封件制造商和用户使用该标准来对碳化硅密封环进行质量分级和检验。它通过设定合格品、一等品和优等品三个等级，帮助确保密封环的可靠性和性能一致性。该标准对于提高机械密封系统的使用寿命和减少泄漏风险至关重要。
AI Summary AI generated
This standard JB/T 58552-1999 specifies the product quality grading requirements for silicon carbide seal rings used in mechanical seals, defining three grades: qualified, first-grade, and premium. It details inspection items (such as flatness, surface roughness, air pressure test, bulk density, flexural strength, hardness, etc.) and their corresponding grade criteria, along with test methods, sampling methods, and evaluation methods. The standard applies to reaction-sintered, pressureless-sintered, and hot-pressed silicon carbide seal rings, aiming to ensure reliability and performance through rigorous quality control.
本标准JB/T 58552-1999规定了机械密封用碳化硅密封环的产品质量分等要求，包括合格品、一等品和优等品三个等级。标准详细列出了检测项目（如平面度、表面粗糙度、气压试验、体积密度、弯曲强度、硬度等）及其分等指标，并规定了试验方法、抽样方法和评定方法。该标准适用于反应烧结、无压烧结和热压烧结碳化硅密封环，旨在通过严格的质量控制确保密封环的可靠性和性能。
Key Sentences extracted from text
本标准规定了机械密封用碳化硅密封环产品质量等级，试验、抽样和评定方法。
密封环产品质量分为合格品、一等品和优等品三个等级。
以关键项目和检测项次合格率的最低等级，判定产品等级。
样品应从用户或制造厂仓库中随机抽取。
试验方法按JB/T 6374—1992 中5.1~5.7 进行。
This standard specifies the product quality grades, test, sampling and evaluation methods for silicon carbide seal rings for mechanical seals.
The product quality of seal rings is divided into three grades: qualified product, first-grade product, and premium product.
The product grade is determined by the lowest grade of key items and the pass rate of inspection items.
Samples shall be randomly drawn from the user's or manufacturer's warehouse.
Test methods shall be carried out according to sections 5.1 to 5.7 of JB/T 6374-1992.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 58552—92《机械密封用碳化硅密封环 产品质量分等》的修订。
- 本标准自实施之日起代替JB/T 58552—92。
- This standard is a revision of JB/T 58552-92 'Silicon Carbide Seal Rings for Mechanical Seals - Product Quality Grading'.
- This standard replaces JB/T 58552-92 from the date of implementation.