惰气熔融-红外热导法测定12Cr_2Mo_1R焊缝金属中氧氮氢

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英文篇名：Determination of oxygen,nitrogen and hydrogen in 12Cr_2Mo_1R weld metal by inert gas fusion-infrared absorption and thermal conductivity method 作者：王晓旋 ; 卜兆杰 ; 黄健强 ; 李文新 英文作者：WANG Xiao-xuan;BU Zhao-jie;HUANG Jian-qiang;LI Wen-xin;Lanzhou LS Test Technology Co.,Ltd.;Gansu Engineering Laboratory of Materials Characterization and Satety Evaluation for Machinery Equipment;Gansu Engineering Technology Research Center of High-end Castings and Forgings;Lanzhou LS Energy Equipment Engineering Institute Co.,Ltd.; 关键词：焊缝金属 ; 火花源线切割 ; 加冷却液车削 ; 惰气熔融 ; 红外热导法 ; 氧 ; 氮 ; 氢 英文关键词：weld material;;spark source wire cutting;;coolant turning;;inert gas fusion;;infrared absorption and thermal conductivity method;;oxygen;;nitrogen;;hydrogen 中文刊名：YJFX 英文刊名：Metallurgical Analysis 机构：兰州兰石检测技术有限公司;甘肃省机械装备材料表征与安全评价工程实验室;甘肃省高端铸锻件工程技术研究中心;兰州兰石能源装备工程研究院有限公司; 出版日期：2017-07-30 12:10 出版单位：冶金分析 年：2017 期：v.37 基金：甘肃省科技计划资助项目(2015GS05896) 语种：中文; 页：YJFX201707011 页数：5 CN：07 ISSN：11-2030/TF 分类号：68-72

摘要

探讨了12Cr_2Mo_1R焊缝金属制备方法、分析功率和助熔剂对氧、氮和氢测定的影响,建立了采用惰气熔融-红外热导法对12Cr_2Mo_1R焊缝金属中氧、氮和氢同时测定的方法。实验表明:采用火花源线切割与加冷却液车削的联合加工样品方法,设定分析功率为4 500 W,不加助熔剂,可直接对氧、氮和氢进行测定。氧、氮和氢的检出限分别为0.000 082 2%、0.000 648%和0.000 047 7%,测定下限分别0.000 274%、0.002 16%和0.000 159%。采用实验方法对兰石重装公司内部生产的12Cr_2Mo_1R焊缝金属实际样品进行测定,氧、氮和氢结果的相对标准偏差(RSD,n=5)分别为0.9%~4.8%、0.9%~5.4%和4.0%~6.2%;对实际样品加入钢铁标准样品进行加标回收试验,回收率分别在99%~105%、98%~102%和91%~94%之间。
        The effect of preparation method of Cr_2Mo_1R weld metal,the analytical power and flux on the determination of oxygen,nitrogen and hydrogen was discussed.The simultaneous determination method of oxygen,nitrogen and hydrogen in Cr_2Mo_1R weld metal by inert gas fusion-infrared absorption and thermal conductivity method was established.The results showed that oxygen,nitrogen and hydrogen could be directly determined without addition of flux under the following conditions:the sample was prepared by spark source wire cutting combined with turning in presence of cooling liquid;the analytical power was 4 500 W.The detection limit of oxygen,nitrogen and hydrogen was 0.000 082 2%,0.000 648% and 0.000 047 7%,and the low limit of determination was 0.000 274%,0.002 16%and 0.000 159%,respectively.The proposed method was applied for the determination of actual sample of Cr_2Mo_1R weld metal produced in Lanzhou Lanshi Group Co.,Ltd.The relative standard deviations(RSD,n=5)was 0.9%-4.8%,0.9%-5.4% and 4.0%-6.2%for oxygen,nitrogen and hydrogen,respectively.The recovery test was conducted by adding standard steel sample into actual sample.The recovery was 99%-105%,98%-102%and 91%-94%,respectively.

引文

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