GB/T 38803-2020 in English
VALIDSpecification for failure analysis of steel wire ropes
- Issued on:2020-06-02
- Implemented on:2020-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
《GB/T 38803-2020钢丝绳失效分析规范》由TC183（全国钢标准化技术委员会）归口，TC183SC12（全国钢标准化技术委员会钢丝绳分会）执行，主管部门为中国钢铁工业协会。
Introduction
Analysis of the core content of the standard
Wire rope is a key load-bearing component, and its failure analysis is directly related to the safe operation of the equipment. This standard systematically specifies the technical requirements for the entire process from on-site investigation to laboratory testing.
Comparison of key technical requirements
| Analysis dimension | Traditional method | Requirements of this standard |
|---|---|---|
| Macro inspection | Visual observation | 10x magnifying glass system inspection |
| Micro inspection | Selective detection | Metallographic microscope + SEM joint analysis |
| Performance test | Basic mechanical test | Including 12 indicators such as rotation degree/elastic modulus |
Typical failure case analysis
Case 1: Broken hoist rope in mine
Through the micro-area composition analysis specified in this standard, it was found that the sulfur element on the surface of the steel wire was abnormally enriched. Combined with the metallographic structure inspection, it was confirmed that the stress corrosion fracture was caused by hydrogen sulfide corrosion.
Case 2: Cable-stayed bridge strand wire jump
Using the GB/T31979 rotation degree test, it was found that the actual rotation angle of the wire rope exceeded the standard by 47%, which was traced back to improper control of the twisting parameters during the manufacturing process.
Implementation key recommendations
- When sampling, the complete section of the failure source area more than 50cm should be retained
- Corrosion analysis requires simultaneous detection of the rope core oil content (YB/T4182)
- Report preparation must include a 3-level review mechanism
Technology evolution analysis
Compared with the old version of the standard, the following are added:
1) Scanning electron microscope micro-area analysis requirements (JY/T010)
2) Actual elastic modulus test of wire rope (GB/T24191)
3) Clarify the special storage requirements for judicial arbitration samples
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