GB/T 3684-2021 in English
VALIDConveyor belts—Electrical conductivity—Specification and test method
- Issued on:2021-03-09
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 3684-2021 |
| Document status: | VALID |
| Title in English: | Conveyor belts—Electrical conductivity—Specification and test method |
| Title in Chinese: | 输送带 导电性 规范和试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2021-03-09 |
| Implemented on: | 2021-10-01 |
| Superseding: |
GB/T 3684-2006 Conveyor belts - Electrical conductivity - Specification and method of test
|
| ICS Classification: | 53.040.20-Components for conveyors |
| Chinese Classification: | G42-Rubber tube, rubber belt and tape |
| Professional Classification: | GB-National Standard |
| Related Keywords: | application exclude light conveyor
conveyor belts flame-retardant conveyor belts test method introduction core electrical conductivity specification |
| Related Topics: | Conductivity
conductive GB 3684 GB/T 3684-2006 gb3684 isoconductivity gb/t+3684 Conveyor temperature Conductive fluid Conductivity standard GBT3684 GB/T 3684-1983 GB/T 3684-2006 GB/T 3684-2021 conveyor gb/t 3684-2018 gb/t3684-2021 |
《GB/T 3684-2021输送带 导电性 规范和试验方法》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
Core technical requirements of the standard
| Technical indicators | GB/T3684-2021 | GB/T3684-2006 | ISO284:2012 |
|---|---|---|---|
| Maximum surface resistance | ≤3×10⁸Ω | Same as left | Same as left |
| Scope of application | Exclude Light conveyor belt | Not explicitly excluded | Exclude ISO211831 light belt |
| Electrode quality requirements | Inner electrode 115g/outer electrode 900g | Not quantified | Same as 2021 version |
Analysis of key technical differences
The 2021 version mainly introduces the GB/T30691 environmental control standard. Before the test, it needs to be adjusted at 23℃±2℃, 50%±5%RH for ≥2h. The conductive liquid formula clearly requires the presence of polyethylene glycol 800mg/g + potassium chloride 1mg/g to ensure that the contact resistance is ≤10⁴Ω.
Implementation points
Typical application case: Flame-retardant conveyor belts for coal mines need to meet the MT668 standard. It is recommended to control the surface resistance below 1×10⁷Ω. Attention should be paid during the test:
- Polishing is required before using brass electrodes
- The error of the conductive liquid coating area should be <5%
- Reading stability time ≥60s
Standard evolution background
This standard has been revised three times in 1983, 2006 and 2021. The 2021 version mainly responds to the update of ISO284:2012, and adjusts the scope of application according to my country's GB/T39825 light belt standard. Added Appendix A to clarify the impact of temperature and humidity on test results.
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