Replacing quartz sand with mullite sand, the high temperature intension of sand core can be improved, the burr defect is avoiding, the quality and life of track plate and pin are improved.

• 利用莫莱石砂替代石英砂生产履带板砂芯可提高其抗高温开裂强度，消除履带板销孔的脉纹铸造缺陷，提高履带板与履带销的质量与使用寿命。