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刘政军, 慈鸿钢, 苏允海, 刘长军. 工艺参数对堆焊层组织性能的影响[J]. 焊接学报, 2009, (12): 49-52.
引用本文: 刘政军, 慈鸿钢, 苏允海, 刘长军. 工艺参数对堆焊层组织性能的影响[J]. 焊接学报, 2009, (12): 49-52.
shu
LIU Zhengjun, CI Honggang, SU Yunhai, LIU Changjun. Effect of surfacing process parameters on microstructure and properties of surfacing layer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (12): 49-52.
Citation: LIU Zhengjun, CI Honggang, SU Yunhai, LIU Changjun. Effect of surfacing process parameters on microstructure and properties of surfacing layer[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (12): 49-52.
shu

工艺参数对堆焊层组织性能的影响

Effect of surfacing process parameters on microstructure and properties of surfacing layer

    摘要
  • 摘要: 采用碳弧堆焊设备制备Cr-B-Ni-V系耐磨合金,在制备过程中加入直流横向磁场.外加磁场将与电弧、熔池相互作用形成电磁搅拌现象,细化堆焊层金属的组织,影响硬质相的形核及分布,进而提高堆焊层的综合力学性能.通过对堆焊层进行硬度、磨损试验以及显微组织分析,研究堆焊速度、磁场强度对堆焊层金属的硬度和耐磨性的影响规律.结果表明,堆焊速度应与磁场电流配合使用,才能使堆焊层的性能得到充分改善;当堆焊速度为12 cm/min,磁场电流为3 A时,堆焊层的硬度得到最大值,而磨损量达到最小值,其具体数值硬度为54.4 HRC,磨损量为0.033 5 g.

     

    Abstract: In order to refine the structure of deposited metal and control the morphology and distribution of hard phase in surfacing deposit, DC transverse magnetic field was applied to the carbon arc surfacing of Cr-B-Ni-V iron based alloy system.The influence of magnetic intensity and surfacing speed on degree of hardness and wearing resistance was studied through analyzing the hardness, wearing and microstructures of the surfacing deposit.The results show that good match of magnetic field intensity and surfacing speed can improve the properties of surfacing deposit;the optimal values of surfacing deposit are 54.4 HRC and Δm=0.033 5 when magnetic field current is 3 A, surfacing current is 180 A and surfacing speed is 12 cm/min.

     

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