Corundum abrasive with bauxite as the main raw material formed at high temperature melting.
棕刚玉磨料以铝矾土为主要原料经高温熔炼而成。
The preparation method does not need the device and mean of high temperature melting, thus the device cost and maintenance cost are lower.
该制备方法不需要高温熔融的设备手段，因此设备的成本和维护都比较低。
Some metals such as cobalt nickel chrome and so on can corrade the element in high temperature melting state and affect the service life of element.
部分金属如钴、镍、铬等在高温熔化状态可以对元件造成侵蚀，影响元件的寿命。
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