GB/T 17044-2020 in English
VALIDSteel cord conveyor belts—Adhesion strength test of the cover to the core layer
- Issued on:2020-12-14
- Implemented on:2021-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 17044-2020钢丝绳芯输送带 覆盖层与带芯层粘合强度试验》由TC428（全国带轮与带标准化技术委员会）归口，TC428SC1（全国带轮与带标准化技术委员会输送带分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of the core content of the standard
This standard specifies the test method for the bonding strength between the cover layer and the core layer of steel cord conveyor belts, and is applicable to the quality inspection of various types of steel cord conveyor belt products.
Key technical changes
| Technical elements | GB/T17044-2013 | GB/T17044-2020 |
|---|---|---|
| Cited standards | ISO18573 is not cited | New ISO18573 environmental adjustment requirements |
| Specimen size | Minimum value is not specified | Minimum length of 150mm is specified |
| Test steps | Single group test | Two groups of tests for upper and lower covering layers |
Details of the test method
Sample preparation requirements
1. Conveyor belt without transverse parts: length ≥150mm, width ≥25mm and containing ≥2 steel ropes
2. Conveyor belt with metal transverse parts: width strictly controlled at (25±0.5)mm
3. The cutting part should be ≥50mm away from the belt edge, and the covering layer needs to be peeled off in advance to form a clamping section
Implementation points
Environmental control: The state must be adjusted according to ISO18573 environment B conditions ((23±2)℃, (50±5)%RH)
Test process:
- The test is divided into two groups: the upper and lower covering layers, with 3 specimens in each group
- The peeling speed is strictly controlled at (100±10)mm/min
- When the bonding strength is greater than the tear strength of the core, the maximum force value must be recorded
Result calculation specification
Adhesion strength calculation formula: T=F/b (F is the median peel force, b is the specimen width)
The final result should be rounded to an accuracy of 0.1N/mm
Background of standard evolution
This standard was first published in 1997. The 2020 version mainly achieves technical equivalence with ISO8094:2013, reflecting:
- Localized adaptation of international standards
- Refined improvement of test methods
- Improved comparability of test data
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