铸造用CO2硬化粘结剂系统具有气硬冷芯盒的优点，同时又具有环保方面的优势。
CO2-cured binder system not only has the advantages as a cold-box process but also has the superiority in the environmental protection.
离心铸造时在铁水中加入微量的铋，可以提高滚筒外壳冷硬层的硬度和深度。
The hardness and depth of chill layer on the roller outer surface can be raised with adding trace Bi into liquid Fe in centrifugal casting.
离心铸造时在铁水中加入微量的铋，可以提高滚筒外壳冷硬层的硬度和深度。
The hardness and depth of chill layer on the roller outer surface can be raised with adding trace Bi into liquid Fe in centrifugal casting.
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