Preparation method of self-lubricating hard composite coating on surface of shield tunneling machine cutter

The invention discloses a preparation method of a self-lubricating hard composite coating on the surface of a shield tunneling machine cutter. According to the preparation method of the self-lubricating hard composite coating on the surface of the shield tunneling machine cutter, a cutter base body...

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU JIALI, HAN ZHENGTONG, CHEN HAO, CHENG YANHAI, HAN ZHONGCHEN, YANG JINYONG, WANG QINGQING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses a preparation method of a self-lubricating hard composite coating on the surface of a shield tunneling machine cutter. According to the preparation method of the self-lubricating hard composite coating on the surface of the shield tunneling machine cutter, a cutter base body is made of high-speed steel, and a NiCoCrAlY adhesion layer and a WC-TiC-NbC-Co-Ti3AlC2 coating are sequentially prepared on the surface of the cutter base body through laser cladding. The WC-TiC-NbC-Co-Ti3AlC2 coating prepared through the method is free of cracks and forms good metallurgical bonding with the base body, and the NiCoCrAlY adhesion layer has a good adhesion effect. In a WC-TiC-NbC-Co-Ti3AlC2 system, WC, TiC and NbC are all hard phases, so that the coating has high hardness, Co plays a role in connecting the hard phases, Ti3AlC2 has good self-lubricating performance, and the friction factor of the coating is greatly reduced. The coating has high hardness and good wear resistance, the cutting capacity