试验表明：使用铝酸钴细化剂后晶粒度等级提高1倍以上。
The experiment showed that the grain degree is increased by half or more.
结果表明：随着卷取温度的升高，钢的强度和晶粒度等级下降。
The results show that: With the coiling temperature increasing, the strength and ASTM reduced gradually.
研究了K418合金细晶形成的方法，细晶叶片的铸造工艺参数及其获得的晶粒度等级，并讨论了细晶形成的原理。
Forming method of fine grain, processing parameters of casting fine grain blade, and grain size scale of K418 alloy were investigated. The principle of forming fine grain was discussed.
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