(微信)
微(wei)穿孔(kong)(kong)(kong)(kong)板消聲(sheng)器是利(li)用(yong)微(wei)穿孔(kong)(kong)(kong)(kong)板吸聲(sheng)結構(gou)制成的(de)一(yi)(yi)種新(xin)型(xing)消聲(sheng)器。不用(yong)任何多孔(kong)(kong)(kong)(kong)吸聲(sheng)材料,只在厚度小于1mm的(de)薄(bo)金屬板上鉆許多微(wei)孔(kong)(kong)(kong)(kong),這些微(wei)孔(kong)(kong)(kong)(kong)的(de)孔(kong)(kong)(kong)(kong)徑(jing)一(yi)(yi)般為(wei)0.5~1mm左右,穿孔(kong)(kong)(kong)(kong)率在1%~3%之間,在穿孔(kong)(kong)(kong)(kong)板后留有一(yi)(yi)定的(de)空腔,就成為(wei)微(wei)穿孔(kong)(kong)(kong)(kong)板吸聲(sheng)結構(gou)。微(wei)穿孔(kong)(kong)(kong)(kong)板是高聲(sheng)阻、低聲(sheng)質(zhi)量的(de)吸聲(sheng)元件。