理化检验-物理分册2017，Vol.53Issue(6)：387-390,395,5.DOI:10.11973/lhjy-wl201706003
螺栓紧固件里氏硬度现场检测误差
Field Test Error of Leeb Hardness of Bolt Fasteners
张健 1王若民 1李坚林 2甄超 2汤文明3
作者信息
- 1. 国网安徽省电力公司电力科学研究院, 合肥 230601
- 2. 国网安徽省电力公司, 合肥 230061
- 3. 合肥工业大学 材料科学与工程学院, 合肥 230009
- 折叠
摘要
Abstract
The Brinell hardness (HBW) and the Brinell hardness converted from the tested Leeb hardness (HLD→B) of as-serviced In783 high-temperature alloy and 1Cr11Co3W3NiMoVNbNB steel bolt fasteners were tested at heads and waists respectively under different conditions (polishing state and grinding state), and the difference between HBW and HLD→B at different parts and under different conditions were studied combined with the microstructure observation.The results show that at the same test position (head or waist) of the two bolts, the hardnesses of the polished samples were higher than those of the ground ones.Under the same test condition (polishing or grinding), the hardnesses of the bolt heads were higher than those of the waists.The HLD→B (grinding state) of the In783 high-temperature alloy bolt were evidently different from the HBW (polishing state) at the same part, and the former was about 4% reduction.This error needed compensating when field test.The relationship between HBW (polishing state) and HLD→B (grinding state) of the 1Cr11Co3W3NiMoVNbNB steel bolt was HBW=1.06-1.10HLD→B, which indicated that for the low-carbon and high-alloy steel there was also a negative deviation compared HLD→B to the actual tested HBW.关键词
螺栓/现场检测/里氏硬度/布氏硬度/检测误差Key words
bolt/field test/Leeb hardness/Brinell hardness/test error分类
矿业与冶金引用本文复制引用
张健,王若民,李坚林,甄超,汤文明..螺栓紧固件里氏硬度现场检测误差[J].理化检验-物理分册,2017,53(6):387-390,395,5.
