The melting speed, overheat temperature, pouring temperature and modification in production of high chrome cast iron were studied.

对高铬铸铁的熔炼速度、过热温度、浇注温度及变质处理进行了研究。

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Rock wool insulating tubes is basalt and other natural ore, etc as main raw materials, by high temperature melting in a fiber, stir-in binder, curing processing and is made.

岩棉保温管是以玄武岩及其它天然矿石等为主要原料，经高温熔融成纤，加入适量粘结剂，固化加工而制成的。

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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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