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近几年来,由于环境保护的要求和扩大机电产品出口的需要,降低机电产品噪声引起了愈来愈多部门的重视。一、国内外情况1.我国机电产品的噪声状况机动车辆、风机、压缩机、冲压设备、木工机械、机床和电机等成千上万种机电产品是造成交通噪声、工业噪声的主要声源。噪声应作为产品的主要性能指标之一,应成为衡量产品质量好坏的综合技术指标之一。过去,绝大多数产品在设计和制造阶段没有考虑噪声问题,大部分高噪声机器未作降低噪声处理,
In recent years, due to environmental protection requirements and the need to expand the export of electromechanical products, reducing the noise of electromechanical products has attracted more and more departments’ attention. I. Domestic and foreign situations 1. Noise situation of China’s mechanical and electrical products Thousands of mechanical and electrical products such as motor vehicles, fans, compressors, stamping equipment, woodworking machinery, machine tools and motors are the main sources of traffic noise and industrial noise. Noise should be as one of the main performance indicators of products, should be a measure of the quality of the product is one of the comprehensive technical indicators. In the past, most of the products did not consider the noise problem in the design and manufacturing stages. Most of the high-noise machines did not reduce the noise,