目前在铸造生产中由于造型能力的飞跃增长使铸件的清理工作显得非常薄弱,大量待清理的铸件堆积如山,影响任务的完成。为解决这一关键,我们考虑采用油砂芯可以提高清理效率。但目前桐油供不应求,粘结剂的配制和搅拌工作又非常麻烦,田此我们试图找到一种性质仅次于沥青的,浓度较大,而且来源丰富的半液体油代替。我们会利用机油,重柴油等配制芯砂,但效果都不能令 Currently in the casting production due to the rapid growth of modeling capabilities make the casting clean-up work is very weak, a large pile of castings to be cleaned up, affecting the completion of the task. To address this key issue, we consider using an oil sand core to improve cleaning efficiency. However, at present, there is a shortage of tung oil and the preparation and mixing of binders are very troublesome. In this field, we tried to find a semi-liquid oil which is second only to asphalt and of higher concentration and rich in origin. We will make use of oil, heavy diesel and other preparation sand, but the effect can not make