GB/T 23340-2018 in English
VALIDInternal combustion engines—Connecting-rods—Specification
- Issued on:2018-02-06
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 23340-2018 |
| Document status: | VALID |
| Title in English: | Internal combustion engines—Connecting-rods—Specification |
| Title in Chinese: | 内燃机 连杆 技术条件 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-02-06 |
| Implemented on: | 2018-09-01 |
| Superseding: |
GB/T 23340-2009 Internal combustion engines - Connecting-rods - Specification
|
| ICS Classification: | 27.020-Internal combustion engines |
| Chinese Classification: | J92-Engine body and moving parts |
| Professional Classification: | GB-National Standard |
| Related Keywords: | internal combustion engines
internal combustion engines connecting-rods specification introduction surface quality control combustion engines |
| Related Topics: | Rod Technical Parameters
Thorium fuel condition Rod-to-rod spectroscopy Rod Spectrum Analysis Technology GB/T23340-2018 GBT23340 GB/T 23340-2009 GB/T 23340-2018 Internal combustion engine connecting rod Internal combustion engine connecting rod weight gb/t23340 |
《GB/T 23340-2018内燃机 连杆 技术条件》由TC177（全国内燃机标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
1. Background of standard formulation and technological evolution
GB/T23340-2018 "Technical Conditions for Connecting Rods for Internal Combustion Engines" is a revision of the original standard GB/T23340-2009, which mainly updates the technical requirements for forged steel connecting rods for internal combustion engines. The new standard combines the needs of industry development and technological progress, and focuses on adding material performance requirements, inspection methods, and packaging and transportation specifications.
2. Comparative analysis of standard frameworks
| Standard Dimensions | Contents of the 2009 Edition | Updates to the 2018 Edition |
|---|---|---|
| Material Requirements | Only the performance indicators of 45 steel and $40\mathrm{Cr}$ are specified. | The performance requirements of materials such as $50\mathrm{Mn}$, $35\mathrm{CrMo}$, and $42\mathrm{CrMo}$ have been added, expanding the scope of application. |
| Hardness index | The hardness range under different processing technologies is not clear. | Detailed provisions for the hardness range after heat treatment have been added, distinguishing between the requirements for quenching and tempering and controlled air cooling processes. |
| Detection method | Mainly relies on visual inspection and conventional instrument measurement. | Advanced inspection methods such as metallographic microstructure analysis and fatigue strength test have been added, and specific operating specifications have been clarified. |
3. Implementation suggestions and precautions
Material selection:It is recommended that enterprises give priority to the use of high-performance alloy steels such as 40Cr and 35CrMo to ensure the strength and durability of the connecting rod under high-load operating conditions.
Hardness testing:The testing location and method should be adjusted according to different heat treatment processes, and special attention should be paid to the combined test of Rockwell hardness and Brinell hardness after the quenching and tempering process.
Surface quality control:Strictly control the quality of the blank shot peening treatment to ensure that there are no defects such as cracks and oxide scale on the surface, and meet the requirements of GB/T12362-2003.
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