渗碳层小型自动测厚仪的研制  

DEVELOPMENT OF SMALL TYPE AUTOMATIC THICKNESS MEASUREMENT INSTRUMENT FOR CARBURIZED LAYERS

作　　者：李桂荣[1] 李国斌[1] 符之力 关家锟[2] 

机构地区：[1]大连理工大学,大连116023 [2]北京燕山石化公司

出　　处：《无损检测》1997年第5期128-129,139,共3页Nondestructive Testing

摘　　要：HP材料裂解炉管内层渗碳后,由顺磁性转变为铁磁性,测其磁性变化可确定其渗碳程度。采用特殊探头、双通道自动升降机构和微机处理,自动记录、打印测量结果,自动消除外表层氧化皮影响。The paramagnetism of HP furnace tubes will transform into ferromagnetism after carburization. The degree of carburization can be determined according to the changes of magnetism. Equipped with a specific probe, double-channel elevator mechanisms and computer data acquisition system, the instrument has the functions of automatic elevating, recording and result printing. It can also automatically eliminate the effect of oxide skins.

关 键 词：测厚仪 渗碳层 管 磁性检测 

分 类 号：TH821.1[机械工程—仪器科学与技术]