摩托车发动机铝合金曲轴箱体在压铸毛坯时常会出现浇口夹渣现象,而浇口夹渣又多为类似缩孔、油污和冷硬层3种形式。引起夹渣的原因主要是模具温度过高、冲头油过量和Al液含渣量高等。解决缩孔类夹渣,主要从降低模具温度入手;油污类夹渣,可采取调整冲头润滑油用量、加注位置及供给方式;应对冷硬层夹渣,主要靠调整压射延时和调整汤勺退回待机时间、过滤汤勺式样的导入、规范Al液除渣除气作业要求等措施。 Motorcycle engine aluminum alloy crankcase casting blank often appear in the slag slag phenomenon, and the gate slag and more for a similar shrinkage, oil and chill 3 kinds of forms. The main reason causing slag inclusions is mold temperature is too high, too much punch oil and Al liquid slag content higher. To solve the shrinkage class slag, mainly from the lower mold temperature start; oil class slag, can take the amount of punch lubricant adjustment, filling location and supply; cope with chilled hard slag, mainly by adjusting the injection delay and Adjust the spoon back to standby time, filter the introduction of spoon style, regulate Al liquid slag removal operation requirements and other measures.