Titanium alloy drill rod joint wear-resistant belt powder and laser cladding method thereof

• Main Authors: OUYANG ZHIYING, YU SHIJIE, YAO WANGTONG, CHEN MENG, SHU ZHIQIANG
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: ALLOYS; CASTING; 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; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention discloses titanium alloy drill rod joint wear-resistant belt powder and a laser cladding process method thereof. The laser cladding process method comprises the following steps: 1) pretreating a drill rod; 2) preparing cladding powder; 3) carrying out laser cladding on a wear-resistant belt; and 4) post-processing. According to the titanium alloy drill rod, a method of laser cladding of the wear-resistant belt is adopted, the fusion of the wear-resistant belt and a titanium alloy joint material is improved by cladding alloy powder with high Ti content, elements such as Si and B are added into the powder, the adverse effect of titanium alloy oxide on the binding force of the wear-resistant belt is reduced, and graphite added into the powder reacts with Ti to generate a wear-resistant reinforced phase in situ; the hardness and wear resistance of the wear-resistant belt are improved. According to the method, the wear-resistant belt which is high in binding force, high in dilution rate, uniform in s