Both the chill and reverse chill are defects often found in the nodular iron knucle castings.
白口和反白口缺陷是球铁件转向节的常见缺陷。
Too high residual magnesium content, and especially too high residual rare earth content is the main reason causing reverse chill defect. So them…
引起反白口的主要原因是残余镁量，特别是残余稀土量过高，防止措施是采用稀土含量较低的球化剂，提高球化处理温度和浇注温度。
Too high residual magnesium content, and especially too high residual rare earth content is the main reason causing reverse chill defect. So them…
引起反白口的主要原因是残余镁量，特别是残余稀土量过高，防止措施是采用稀土含量较低的球化剂，提高球化处理温度和浇注温度。
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