严密. 镍基喷焊层的等离子弧重熔试验研究[J]. 工程科学学报, 1996, 18(S2): 32-36. DOI: 10.13374/j.issn1001-053x.1996.s2.007
引用本文: 严密. 镍基喷焊层的等离子弧重熔试验研究[J]. 工程科学学报, 1996, 18(S2): 32-36. DOI: 10.13374/j.issn1001-053x.1996.s2.007
shu
Yan Mi. Experimental Study on the Plasma-Arc Remelting Treatment of Ni-Based PTAW Cladding[J]. Chinese Journal of Engineering, 1996, 18(S2): 32-36. DOI: 10.13374/j.issn1001-053x.1996.s2.007
Citation: Yan Mi. Experimental Study on the Plasma-Arc Remelting Treatment of Ni-Based PTAW Cladding[J]. Chinese Journal of Engineering, 1996, 18(S2): 32-36. DOI: 10.13374/j.issn1001-053x.1996.s2.007
shu

镍基喷焊层的等离子弧重熔试验研究

Experimental Study on the Plasma-Arc Remelting Treatment of Ni-Based PTAW Cladding

    摘要
  • 摘要: 以等离子弧为热源,采用类似激光表面改性的办法,研究了重熔处理对Ni基自熔合金组织和耐磨性的影响。经等离子弧扫描重熔,喷焊层表面形成重熔激冷层,该层基体组织由γ-Ni转变为化合物Cr0.7Fe0.36Ni2.90,并形成晶粒度很小的微晶组织。重熔后试样的耐磨粒磨损与粘着磨损性能提高,且880W重熔较440W重熔试样的耐磨粒磨损性能提高程度更大。

     

    Abstract: The effect of plasma arc remelting treatment on the microstructure and wear resistance of overlay is investigated and discussed.With plasma are remelting process, a remelting-chilling layer formed on the overlay surface.In the layer,the matrix structure transormed from γ-Ni to Cr0.7Fe0.36Ni2.90,and fine crystallite grains were obtained. Both abrasive and adhesive wear resistance were maised by plasma the remelting process.

     

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