重复使用的鼓型桶维护经常剥离覆膜，在其生命周期终端，鼓型桶投进熔炉冶炼。
When reconditioning drums for re-use, the coating is often removed. At the end of its life, the drum goes into a remelting furnace.
综合评价了小型液压阀体铸件型芯的芯砂材料，介绍了覆膜砂热芯盒设计特点以及覆膜砂制芯设备等。
Sand mixtures of cores for small hydraulic valves casting were reviewed. Design of hot boxes and equipments for production of coated sand cores were described.
我国自行研制的XS2120型覆膜砂生产线已用于生产，本文对该线工艺流程及该线两个主要设备的专利技术作一简介。
Model XS2120 Hot Sand Coating Production line developed by ourselves has been commissioned, of which process procedure and patented technique of two major facilities are briefly described.
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