铸件裂纹的检测方法很多,例如萤光探测法、磁力探测法、涡流探测法和超声探测法等。它们要求操作者具有一定技能和实践经验,并依靠人的观察和判断以得出结论,特别是受到铸件表面光洁度的限制,使用有很大局限性。切向磁场检测法对铸件表面光洁度的要求低,即使粘砂严重,也可以进行正常检测。 Casting crack detection methods are many, such as fluorescent detection method, magnetic detection method, eddy current detection method and ultrasonic detection method. They require the operator has a certain skill and practical experience, and rely on human observation and judgment to draw conclusions, especially by casting surface finish restrictions, the use of a lot of limitations. Tangential magnetic field detection of castings on the surface finish of the low, even if the sticky sand serious, but also for normal testing.