[1]王廣山,霍仁杰.高碳高鉻堆焊焊條的研制及其堆焊合金顯微組織分析[J].焊管,2019,42(8):14-18.[doi:10.19291/j.cnki.1001-3938.2019.8.003]
 WANG Guangshan,HUO Renjie.Development of High-carbon and High-chromium Hardfacing Electrode and Microstructure Analysis of the Hardfacing Alloy[J].,2019,42(8):14-18.[doi:10.19291/j.cnki.1001-3938.2019.8.003]
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高碳高鉻堆焊焊條的研制及
其堆焊合金顯微組織分析
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期數:
2019年第8期
頁碼:
14-18
欄目:
試驗與研究
出版日期:
2019-08-28

文章信息/Info

Title:
Development of High-carbon and High-chromium Hardfacing Electrode and Microstructure Analysis of the Hardfacing Alloy
文章編號:
10.19291/j.cnki.1001-3938.2019.8.003
作者:
王廣山霍仁杰
遼寧軌道交通職業學院 機械工程系,沈陽 110023
Author(s):
WANG Guangshan HUO Renjie
Department of Mechanical Engineering, Guidaojiaotong Polytechnic Institute, Shenyang 110023, China
關鍵詞:
焊接堆焊焊條工藝性能顯微組織碳化物
Keywords:
welding surfacing electrode technical properties microstructure carbide
分類號:
TG422.1
DOI:
10.19291/j.cnki.1001-3938.2019.8.003
文獻標志碼:
A
摘要:
為了研制具有優良耐磨性能和硬度的高強鋼耐磨堆焊焊條,設計了焊條藥皮的配方,選用了焊條藥皮的渣系,分析了藥皮成分對焊接飛濺的影響規律。對研制的堆焊焊條(Fe-Cr-C、Fe-Cr-C-Nb)進行了焊接試驗。試驗結果表明,焊條藥皮元素顯著影響堆焊熔敷合金焊縫的氣孔、飛濺等性能指標。顯微組織分析表明,碳含量及鉻-碳比對耐磨合金的碳化物方向、密度等分布狀態起到決定性影響,隨著其含量的增加,碳化物趨向垂直于堆焊層表面方向分布,合金的顯微硬度和耐磨性不斷提高,硬度最高值達到63HRC,相對磨損率為0.05;Nb元素的增加對顯微硬度影響不大,但能使碳化物得以細化,分布更均勻,可以顯著改善合金的耐磨性。
Abstract:
In order to develop the wear-resistant surfacing electrode of the high strength steel with good wear-resistant properties, the formulation of the electrode coating was designed, the slag system of the electrode coating was selected, and the influencing rules of the coating composition on welding spatter was analyzed. The welding test of the surfacing electrode (Fe-Cr-C,Fe-Cr-C-Nb) was carried out. The results show that the element of the electrode coating has a significant effect on the weld porosity and spatter. Microstructure analysis shows that carbon content and chrome-carbon ratio play a decisive role in the distribution of carbide direction and density of the wear-resistant alloy. With the increase of the content, the carbide tends to be distributed perpendicular to the surface of the surfacing layer, and the micro-hardness and wear resistance of the alloy improve gradually. The maximum hardness reaches 63HRC, and the relative wear rate is 0.05. The increase of the element Nb has little influence on the micro-hardness, but it can make the carbide refined and distributed more evenly to improve the wear resistance of the alloy.

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備注/Memo

備注/Memo:
收稿日期:2019-01-23
基金項目: 遼寧省教育廳科學研究一般項目(項目編號L2014558)。
作者簡介:王廣山(1979—),男,河南南陽人,博士,講師,主要從事材料加工方面的科研和教學工作。
更新日期/Last Update: 2019-09-29
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