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王新洪, 邹增大, 宋思利, 曲仕尧. TiC-VC免预热耐磨堆焊焊条[J]. 焊接学报, 2002, (4): 31-34.
引用本文: 王新洪, 邹增大, 宋思利, 曲仕尧. TiC-VC免预热耐磨堆焊焊条[J]. 焊接学报, 2002, (4): 31-34.
shu
WANG Xin-hong, ZOU Zeng-da, SONG Shi-li, QU Shi-yao. Development of TiC-VC Hardfacing Electrode with Non-Preheating and Wear Resistance Properties[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (4): 31-34.
Citation: WANG Xin-hong, ZOU Zeng-da, SONG Shi-li, QU Shi-yao. Development of TiC-VC Hardfacing Electrode with Non-Preheating and Wear Resistance Properties[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (4): 31-34.
shu

TiC-VC免预热耐磨堆焊焊条

Development of TiC-VC Hardfacing Electrode with Non-Preheating and Wear Resistance Properties

    摘要
  • 摘要: 采用H08A焊芯,钛铁、钒铁、人造金红石和石墨等药皮组分,研制了新型耐磨、免预热堆焊焊条。通过扫描电镜(SEM)、能谱分析(EDAX)、磨粒磨损试验、焊条工艺性能试验以及硬度测试,系统地研究了焊条药皮组分对堆焊层耐磨性、抗裂性、工艺性能及堆焊层组织结构的影响。试验结果表明,通过电弧高温冶金反应,,药皮中Fe-Ti、Fe-V与石墨反应生成TiC、VC硬质相,并弥散分布于低碳马氏体+残余奥氏体的基体上,堆焊层具有良好的耐磨性和抗裂性,焊前不预热,连续堆焊堆焊层不产生裂纹。Fe-Ti、Fe-V与石墨的加入量对堆焊层耐磨性、硬度以及工艺性能影响很大,随着钛铁、钒铁、石墨量增加,堆焊层硬度、耐磨性增加。但药皮中钛铁超过18%后焊条工艺性能变差,石墨超过12%后,堆焊层耐磨性降低。

     

    Abstract: In this paper,a new hardfacing electrode with high wear resistance and non preheating properties was developed.The ferrotitanium (Fe-Ti),ferrovanadium (Fe-V),rutile and graphite were used as the coating of electrode.The effect of content of composes of coating on the wear resistance,resistance to cracking and microstructure of hardfacing layer was also studied by means of SEM,EDAX,abrasive wear test,welding technical and hardness test.The results show that TiC,VC particles,which depressively distributed in the matrix of lath martensite and retained austenite,were formed by arc metallurgy reaction.The hardness and wear resistance of deposited metal were increased with the increase of content of Fe-Ti,Fe-V and graphite.However,the slag detachability of slag became bad when the content of Fe-Ti beyond 18%,the hardness and wear resistance of deposited metal decreased as the content of graphite beyond 12%.

     

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