[Case Study] Noise Prevention Measures During H-Beam Inversion - Noise Control in Product Inspection Factory
Noise prevention measures during the inversion of H-beams: Noise control measures in the product inspection factory.
At the H-beam factory of A Steel Works, products (H-beams) are inspected for defects while being rotated on rail steel. This inspection process is conducted continuously 24 hours a day, and the H-beams being inspected range from small ones measuring 244w×252h×11m and weighing 0.7t, to larger ones measuring 890w×299h×15.5m and weighing 3.3t. The noise level in this factory was tremendous. The noise exceeded 120 dB, which is quite loud, and even with earplugs, there is a risk of hearing loss in the working environment, prompting inquiries about noise prevention measures. 1. The noise during the flipping of H-beams is severe. 2. There is constant noise 24 hours a day due to multiple inspection lines. 3. Even with earplugs, it can lead to occupational hazards for workers (such as hearing loss). 4. Despite inspecting for defects, there were instances where beams were dropped, causing scratches.
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We propose a rubber skid liner made of Kureha elastomer, known as Trellex, which has good cut resistance and wear resistance. Initially, there were suggestions to use resin liners or regular rubber sheets, but they did not significantly reduce noise and posed a risk of damage from the impact when H-shaped steel falls, making them unsuitable for adoption. Therefore, we decided to test the Trellex rubber skid liner. *As it is made to order, the delivery time will take about two months.
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