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上海钢铁工艺技术研究所冷弯型钢车间生产过程噪声严重,其中尤以飞锯切割和气阀噪声最为强烈。实测180机组单机锯切噪声为108～110dB(A),250机组更高达120dB(A);沿生产线分布的数十个气阀的排气喷流噪声也达97～99dB(A)。因此严重的噪
Shanghai Iron and Steel Technology Research Institute of cold-formed steel workshop noise serious, especially in flying saw cutting and valve noise is the most intense. The measured sawing noise of 180 units was 108 ~ 110dB (A) and the output of 250 units was as high as 120dB (A). The exhaust jet noise of dozens of valves along the production line also reached 97 ~ 99dB (A). So serious noise