试述摩托车减振筒低压铸模技术

Low-pressure Die Casting for Motorcycle Damper Tube

为了减少减振筒的气孔和缩松等铸造缺陷,提高其内部组织的致密程度,在模腔的适当位置上应设置排气塞,在分型面上要开设排气槽和溢流槽,以利于压铸时铝液的顺畅填充、铝液流动前沿冷污金属液的贮存和铸件冷却时有效补缩。

In order to reduce casting defects,such as porosity, shrinkage, etc. , and improve the compactness of the internal structure,it is suggested that an exhaust plug should be placed at a proper position of the die cavity,and exhaust groove and overflow groove arranged on the joint face for smooth filling of aluminum liquid when pressure-casting, for storaging cooled dirt metal liquid at the front of aluminum liquid flow and for the effective shrinkage compensation when castings cooled.