Office Chair Explosion Identification

The explosion of office chairs is mainly related to the quality of the gas spring. When identifying, a comprehensive assessment should be made from aspects such as the wall thickness of the gas spring, gas purity, explosion-proof steel plate, daily usage, and certification standards.

1. Wall Thickness of the Gas Spring
   The wall thickness of the gas spring is a key indicator. Poor-quality gas springs have overly thin walls (usually less than 1 millimeter), which cannot withstand internal pressure. In high-temperature conditions or during frequent lifting and lowering, the pressure inside the gas rod surges rapidly, making it highly prone to explosion. During identification, the wall thickness can be measured. High-quality gas springs should have a wall thickness that meets or exceeds industry standard requirements.

2. Gas Purity
   Regular gas springs should be filled with high-purity inert gas nitrogen (with a purity of over 99%). Some manufacturers, to reduce costs, use compressed air instead of nitrogen. Compressed air contains active components such as oxygen. In high-temperature conditions or during frequent lifting and lowering, the pressure inside the gas rod surges rapidly, significantly increasing the risk of explosion. During identification, the gas composition can be detected using professional equipment, or the manufacturer can be required to provide a gas purity certificate.

3. Explosion-Proof Steel Plate
   Regular gas springs need to be equipped with a 2-millimeter-thick explosion-proof steel plate to block fragments generated during an explosion and reduce the risk of injury. During identification, check whether an explosion-proof steel plate is installed at the bottom or around the gas spring and measure whether its thickness meets the standard.

4. Daily Usage
   Frequent lifting, lowering, and rotation can cause the gas spring to overheat, increasing the risk of explosion. In daily use, avoid frequent lifting and lowering within a single day (e.g., more than 20 times), and do not expose the office chair to heating or direct sunlight for extended periods to prevent abnormal pressure increases inside the gas spring.

5. Certification Standards
   In 2024, national spot checks found that 23.3% of non-compliant chairs had explosion risks. During identification, look for the QB/T 2280 - 2016 standard and check whether the gas spring has passed the 5G5 certification. Office chairs that comply with the standards offer better guarantees in terms of safety and durability.

By using the above methods, the safety of the gas spring in office chairs can be systematically evaluated, reducing the risk of explosion.