JB/T 51110-1999
Internal Combustion Engines - Cylinder Head Gaskets - Product Quality Grading (Internal Use)
内燃机 气缸盖垫片 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量指标 → 4 检验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Quality Indicators → 4 Inspection Methods → 5 Inspection Rules
Scope
This standard specifies the product quality indicators, inspection methods, and inspection rules for cylinder head gaskets (hereinafter referred to as cylinder gaskets) used in reciprocating internal combustion engines with cylinder diameters less than or equal to 200 mm. This standard applies to the inspection and evaluation of the quality of cylinder gasket products.
本标准规定了气缸直径小于或等于200 mm 的往复式内燃机用气缸盖垫片（以下简称气缸垫）产品质量指标、检验方法、检验规则。本标准适用于气缸垫产品质量的检验和评定。
Normative References
Keywords
Application Summary AI generated
Engine manufacturers and quality inspection agencies use this standard to grade the quality of cylinder head gaskets. They apply the specified quality indicators and inspection methods to classify products as qualified, first-class, or superior. This standard ensures consistent product quality, which is critical for the reliable operation of internal combustion engines.
发动机制造商和质检机构使用本标准来评定气缸盖垫片的质量等级。他们依据本标准中的质量指标和检验方法，对产品进行合格品、一等品和优等品的分级。本标准确保了气缸垫产品的质量一致性，为内燃机的可靠运行提供了保障。
AI Summary AI generated
This standard JB/T 51110-1999 specifies quality grading requirements for cylinder head gaskets used in reciprocating internal combustion engines with cylinder diameters ≤200 mm. Products are classified into three grades (qualified, first-class, superior) based on quality indicators including dimensional tolerances, appearance, performance, and warranty period. The standard details inspection methods for thickness measurement, positional tolerance, surface pressure distribution, and reliability testing. Inspection rules classify nonconformities into four categories (A, B, C, D) per GB/T 2828, applicable for quality inspection and evaluation of cylinder gasket products.
本标准JB/T 51110-1999规定了气缸直径≤200mm的往复式内燃机气缸盖垫片的质量分等要求。产品按质量指标分为合格品、一等品和优等品三个等级，涵盖尺寸公差、外观、性能及保用期等要求。标准详细规定了各项指标的检验方法，包括厚度测量、位置度检测、面压分布试验和可靠性试验等。检验规则依据GB/T 2828对不合格进行分类（A、B、C、D类），适用于气缸垫产品的质量检验和评定。
Key Sentences extracted from text
本标准规定了气缸直径小于或等于200 mm 的往复式内燃机用气缸盖垫片（以下简称气缸垫）产品质量指标、检验方法、检验规则。
气缸垫产品按其不同质量指标定为合格品、一等品、优等品三个等级。
气缸垫外观质量应加工良好，在密封部位应无裂缝、伤痕、凹凸、折皱、锈蚀等缺陷。
气缸垫性能应按JB/T 7762 有关规定。
按GB/T 2828 规定，受检产品的质量特性不符合标准和产品图样规定要求的均称为不合格，按其产品质量的重要性分类，气缸垫产品将不合格分为A 类不合格、B类不合格、C 类不合格和D类不合格。
This standard specifies the product quality indicators, inspection methods, and inspection rules for cylinder head gaskets (hereinafter referred to as cylinder gaskets) used in reciprocating internal combustion engines with cylinder diameters less than or equal to 200 mm.
Cylinder gasket products are classified into three grades: qualified product, first-class product, and superior product according to their different quality indicators.
The appearance quality of cylinder gaskets shall be well processed, and there shall be no cracks, scratches, concavities, wrinkles, rust, or other defects on the sealing surfaces.
The performance of cylinder gaskets shall comply with the relevant provisions of JB/T 7762.
According to GB/T 2828, when the quality characteristics of the inspected product do not meet the requirements of the standard and product drawings, it is called nonconformity. According to the importance of product quality, cylinder gasket products classify nonconformities into Class A, Class B, Class C, and Class D nonconformities.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 51110.1~51110.3—94的修订
- 修订时仅对原标准作了编辑性修改，主要技术内容没有变化
- This standard is a revision of JB/T 51110.1~51110.3-94
- Only editorial modifications were made during revision; the main technical content remains unchanged