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各种机械设备,特别是各种冲床,由于零部件碰撞所产生的噪声是相当严重的.如能用低噪声金属来制造这些相互撞碰的零部件,将会大大降低机械设备中这部份的噪声.一、AJ——1哑声金属(或叫低噪声金属)这类哑声金属是上海钢铁研究所研制的一种合金.其机械强度同退火状态的45~#钢相同.将哑声金属加工成所需要的零部件后,还需进行高温退火,即升温至900/1000C(±10℃),保温六小时,切断电源炉冷至室温.高温退火的作用是消除内应力,促使晶粒长大 ,促进磁畴壁的移动,使金属成哑声状态.
A variety of mechanical equipment, especially a variety of punch, noise due to collision of parts is quite serious.If the low-noise metal can be used to make these parts collide with each other, will greatly reduce this part of the machinery and equipment The noise of the AJ - 1 dumb metal (or low - noise metal) is a kind of alloy developed by Shanghai Institute of Iron and Steel, whose mechanical strength is the same as that of annealed steel. Acoustic metal processing into the required components, the need for high-temperature annealing, that is heated to 900 / 1000C (± 10 ℃), heat six hours, cut off the power furnace cold to room temperature. The role of high temperature annealing is to eliminate the internal stress, prompting Grain growth, to promote the movement of the magnetic domain walls, so dumb sound metal state.