Title of article :
Feasibility of laminar plasma-jet hardening of cast iron surface
Author/Authors :
Pan، نويسنده , , W.X. and Meng، نويسنده , , X. and Li، نويسنده , , Y. Zhu and G. T. Fei، نويسنده , , Q.X. and Wu، نويسنده , , C.K.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
6
From page :
345
To page :
350
Abstract :
Nontransferred DC laminar plasma jets of stable flow and low impinging pressure acting on the substrate were used to heat W–Mo–Cu cast iron for phase transfer hardening of the surface layer. Substrates were heated in multipass with or without overlapping or heated with only single-pass. Surface morphologies of the molten trace and microstructure of the cross-section were observed, and the hardness distribution of the treated surface layer was examined. The surface layer of single-pass-heated specimen has an average hardness of about 900 HV0.1, while the specimen treated with multipass shows an average hardness of about 700 HV0.1, because of the heat effect from the neighboring pass treating, compared with the substrate hardness of about 300 HV0.1. The results demonstrate the stable and favorably controlled heating of the laminar plasma jet on the substrate surface and feasibility of using it as a tool for surface hardening of cast iron.
Keywords :
Laminar plasma jets , Stable heating , Surface hardening , cast iron
Journal title :
Surface and Coatings Technology
Serial Year :
2005
Journal title :
Surface and Coatings Technology
Record number :
1809721
Link To Document :
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