JB/T 51106-1999
Internal combustion engines - Piston pins - Product quality grading (Internal use)
内燃机 活塞销 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 技术要求 → 4 检验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Technical Requirements → 4 Inspection Methods → 5 Inspection Rules
Scope
This standard specifies the product quality grading indicators, inspection methods, and sampling inspection and evaluation for piston pins of internal combustion engines. This standard applies to piston pins of reciprocating piston internal combustion engines with cylinder diameters less than or equal to 200 mm (hereinafter referred to as piston pins).
本标准规定了内燃机活塞销产品质量分等指标、检验方法及抽样检查和评定。本标准适用于气缸直径小于或等于200 mm 的往复活塞式内燃机活塞销（以下简称活塞销）。
Normative References
Keywords
Application Summary AI generated
Manufacturers of internal combustion engines and quality inspection agencies use this standard to grade and inspect piston pin products. It helps ensure reliability and consistency by setting clear indicators for qualified, first-grade, and superior products. This standard is crucial for guaranteeing the performance and quality of a key engine component.
内燃机制造商和质检机构使用本标准来对活塞销产品进行质量分级和检验。它通过设定合格品、一等品和优等品的明确指标，帮助确保活塞销的可靠性和一致性。该标准对于保证内燃机关键部件的性能和质量至关重要。
AI Summary AI generated
This standard JB/T 51106-1999 specifies the quality grading requirements for piston pins of internal combustion engines, including three grades: qualified, first-grade, and superior. It details technical requirements such as carburized layer depth, hardened layer depth, hardness, surface roughness, and coaxiality tolerance, along with corresponding inspection methods and sampling rules. The standard applies to piston pins for reciprocating piston engines with cylinder diameters ≤200 mm, aiming to ensure product consistency and reliability.
本标准JB/T 51106-1999规定了内燃机活塞销的质量分等要求，包括合格品、一等品和优等品三个等级。标准详细列出了技术要求，如渗碳层深度、硬化层深度、硬度、表面粗糙度、同轴度公差等，并规定了相应的检验方法和抽样检查规则。该标准适用于气缸直径≤200mm的往复活塞式内燃机活塞销，旨在确保产品质量的一致性和可靠性。
Key Sentences extracted from text
本标准规定了内燃机活塞销产品质量分等指标、检验方法及抽样检查和评定。
活塞销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。
活塞销外圆表面，两端面及倒角处不得有任何裂纹存在。
渗碳活塞销外圆表面硬度应为58~64 HRC；有体积稳定性要求时，其外圆表面硬度应为56~64 HRC。
抽样检查规则及抽样方案按GB/T 2828 的规定。
This standard specifies the product quality grading indicators, inspection methods, and sampling inspection and evaluation for piston pins of internal combustion engines.
Piston pin products are classified into three grades: qualified product, first-grade product, and superior product, according to their different quality indicators.
There shall be no cracks on the outer cylindrical surface, both end faces, and chamfers of the piston pin.
The surface hardness of carburized piston pins on the outer cylindrical surface shall be 58~64 HRC; when volume stability is required, the surface hardness on the outer cylindrical surface shall be 56~64 HRC.
The sampling inspection rules and sampling plan shall be in accordance with GB/T 2828.
Standard Timeline
Changes from replaced version:
- 补充了以硬化层深度要求的技术指标
- 将原壁厚差项目改为内孔对外圆的同轴度公差
- Added technical indicators for hardened layer depth requirements
- Changed the original wall thickness difference item to the coaxiality tolerance of the inner hole relative to the outer circle