T/CSAE 69-2018 in English
VALIDAccelerate Corrosion Test acceptance criteria for Passenger Vehicle
- Issued on:2018-03-01
- Implemented on:-
- File Format:PDF
- Delivery:Via email within 5 business days
$679.00
| Standard No: | T/CSAE 69-2018 |
| Document status: | VALID |
| Title in English: | Accelerate Corrosion Test acceptance criteria for Passenger Vehicle |
| Title in Chinese: | 乘用车整车强化腐蚀试验评价方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-03-01 |
| Professional Classification: | T/-Social Organization Standard |
| Related Keywords: | corrosion evaluation grade classification grade 0-10
corrosion level visible 10-level corrosion evaluation system corrosion maps accelerate corrosion test acceptance criteria |
| Related Topics: | Vehicle test
Vehicle test strengthen passenger car Test Conditions/Evaluation Methods Strengthen the humification system vehicle Corrosion Rating corrosion rust Corrosion test Test evaluation National standard for vehicle rust t/csae 312 t/csae 133 |
Introduction
Analysis of the core content of the standard
The standard establishes a systematic evaluation system for passenger cars in an enhanced corrosion environment, which mainly includes:
- Definition of corrosion types: Clarify the criteria for determining red rust (steel matrix corrosion) and white rust (galvanized layer/aluminum alloy corrosion)
- Visible area classification: Divide the inspection area into three levels: conventional visible, low visible, and disassembled visible
- 10-level corrosion evaluation system: Quantitative grading benchmark from no corrosion to rust penetration
Comparison of key technical indicators
| Evaluation dimensions | Red rust evaluation | White rust evaluation | Combined corrosion evaluation |
|---|---|---|---|
| Grade classification | Grade 0-10 (Table 2) | Grade 0-10 (Table 4) | Grade 0-10 (Table 3) |
| Critical threshold | Grade 5: 50% area corrosion | Grade 5: Flaky white rust | Grade 5: Zinc layer corrosion + substrate rust |
| Failure judgment | Grade 9: Quality loss ≥ 20% | Grade 9: Plating peeling | Grade 7: Complete failure of zinc layer |
Implementation points
Typical application scenarios
Take shock absorber spring as an example (Appendix A.5):
- The initial electrophoretic black paint state needs to be recorded before the test
- Focus on the contact part of the spring coil during the test
- Grade 3 (10% red rust spots) requires an early warning
Suggestions for optimizing the test process
- Use a digital microscope to measure the scratch corrosion width (Clause 6.2)
- Prioritize inspection of easily corroded areas such as door hems and skirts (Appendix B.2)
- The complete image record chain needs to be retained during disassembly inspection
Technical evolution analysis
The main breakthroughs of this standard compared with QC/T 732:
- Evaluation granularity refinement: Expand the corrosion level from level 5 to level 10
- Comprehensive material coverage: Add evaluation maps for substrates such as zinc-aluminum coatings and stainless steel
- Digital management: Require all inspection points to establish image-data correspondence
Enterprise implementation suggestions
- Establish a digital database of corrosion maps (refer to Appendix A)
- Develop an automatic rating system based on image recognition
- Evaluation method for optimizing the battery pack area for electric vehicles
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