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据“钢时代”1990.11期P614报道瑞典ABB冶金公司与SSAB炼钢厂共同研究开发了一个可以直接检测热坯的在线裂纹检测系统,此系统可以在高温的固体金属上产生涡流,并通过高温金属裂纹区上涡流的中断引起的频率变化检测裂纹。
According to “Steel Times” 1990.11 P614 report Swedish ABB Metallurgical Company and SSAB Steel Works jointly developed an online crack detection system can directly detect the hot billet, the system can produce high temperature solid metal vortex, and through the high temperature metal Vibration caused by the interruption of eddy current on the cracked area detects cracks.