Pangang Group Research Institute Co.�� Ltd.�� State Key Laboratory for Comprehensive Utilization of Vanadium and Titanium Resources�� Panzhihua 617000�� China
Abstract��To study the hardenability of LDB26 track plate steel�� the sample surface rockwell hardness was measured by using the 600MRD type digital rockwell hardness tester away from the quenched end 1.5�� 3�� 5�� 7�� 9�� 11�� 13�� 15�� 20 mm. And the metallurgical microstructure was observed by a microscope. The results showed the closer to the end of the cooling�� the greater the hardness. Otherwise�� the greater the distance to the water-cooled side�� the smaller the hardness. And the measurement hardness values were also within the scope of the standard. After the end of the sample was quenched�� the structure of the cooled end region was martensite�� and the hardness value was the highest. And at the position of 10 mm away from the end of the water cooling�� it was half martensite area�� which showed that the quenching depth of LDB26 track steel was about 10 mm and it had good hardenability.
�� ��. LDB26�Ĵ��ִ�������[J]. �й������ڿ���, 2017, 35(1): 17-20.
ZHANG Lei. Hardenability?experimental of?LDB26??track?steel. Chinese Journal of Iron and Steel, 2017, 35(1): 17-20.
2017, Vol. 35 
