WW/T 0074-2017 in English
VALIDSpecification of corrosion inhibiting treatment for outdoor iron cultural relics
- Issued on:2017-07-19
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
| Standard No: | WW/T 0074-2017 |
| Document status: | VALID |
| Title in English: | Specification of corrosion inhibiting treatment for outdoor iron cultural relics |
| Title in Chinese: | 室外铁质文物缓蚀工艺规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-07-19 |
| Implemented on: | 2017-12-01 |
| Related Keywords: | cultural relics corrosion archival record specifications
cultural relics outdoor iron cultural relics introduction analysis corrosion inhibition effect |
| Related Topics: | cultural relics
mass spectrometry iron corrosion inhibition process impurities foreign language process impurities Specifications for outdoor renovations |
本标准规定了室外铁质文物缓蚀工艺的作业条件和操作规范。
本标准适用于室外铁质文物缓蚀工艺，也可作为馆藏铁质文物缓蚀处理工艺参考。
Introduction
Analysis of the core content of the standard
This standard aims at the special preservation environment of outdoor iron cultural relics, and systematically specifies the technical requirements for the entire process from pretreatment to archival records. The key points include:
| Technical aspects | Key requirements | Innovation points |
|---|---|---|
| Surface treatment | Rust/oil/dust must be completely removed | The quantitative relationship between pretreatment and corrosion inhibition effect is clarified for the first time |
| Environmental control | Humidity 30%-65%, temperature 5-35℃ | Establish a mechanism to link meteorological conditions with construction window period |
| Process selection | Three processes of brushing/spraying/coating | Propose an adaptability assessment matrix for the cultural relics |
Key points of technical implementation
1. Principles of material selection
The corrosion inhibition solution needs to be selected differently according to the composition of the cultural relics (such as cast iron/wrought iron), corrosion type (uniform corrosion/pitting corrosion) and environmental load (marine/industrial atmosphere). Typical formulas include:
- Phosphate-based: Suitable for heavily rusted cultural relics with high stability requirements
- Molybdate-based: Suitable for chloride ion environments
- Organic amines: Used for protection of precision components
2. Process parameter control
Case: Protection of large iron clocks
Special attention should be paid when using the spraying process:
- Spray gun pressure 0.4MPa (reduced to 0.3MPa for precision parts)
- Maintain spraying angle at 80°-90° vertical
- Drying time between each coat ≥2h (extended to 4h when humidity＞50%)
Standard evolution analysis
Compared with the 2008 trial standard, this version has the following major improvements:
- Added technical parameters for coating process (pulp replacement cycle is 2 days)
- Refined environmental monitoring indicators (added PM2.5 concentration limit)
- Strengthened requirements for image data for archival records (macro photography must be included)
Implementation suggestions
1. Risk prevention and control
Establish a three-level quality control system:
| Before construction | Material compatibility test (72h observation period) |
| During construction | Thickness detection at 3 points per square meter |
| After construction | Electrochemical impedance spectroscopy detection (≥1MΩ·cm²) |
2. Technological innovation direction
- Development of environmentally responsive corrosion inhibitors (such as humidity-triggered release technology)
- Application of drone spraying system to treat high-altitude components
- Establishment of a big data early warning model for cultural relics corrosion
Archival record specifications
According to the requirements of WW/T 0010-2008, it must include:
- Body status (with X-ray flaw detection report)
- Process parameters (including temperature and humidity fluctuation records)
- Effect evaluation (6-month/12-month follow-up inspection)
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