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本文采用還原鐵粉、碳化硼粉末、硼砂在基體金屬材料Q235鋼板上進行氬弧熔覆,并以SiO2為活性劑,研究活性劑對熔覆層組織耐磨性的影響。實驗結果表明:熔覆層有新形成的硼化物存在,熔覆層硬度提高,常規(guī)氬弧熔覆層的磨粒磨損性能、黏著磨損性能、沖蝕性能較基體分別提高了4.0倍、2.7倍、2.8倍,而活性氬弧熔覆層提高了5.1倍、3.0倍、3.5倍。 Steel matrix composites reinforcement were produced by TIG melting mixture of reduced iron, boron carbide powder, borax and Fe-based self-melting alloy powders.And researched the effect of SiO2,which is the best active flux,on the microstructure and wear resistance cladding.The results show that there was formed FeB2 in the cladding layer,and hardness was significantly increased. Abrasive wear resistance, adhesion resistance and erosion resistance of TIG cladding layer were increased 4.0 times, 2.7 times, 2.8 times than the substrate;but A-TIG cladding layer were increased 5.1 times,3.0 times,3.5 times. |

木蟲 (小有名氣)
金蟲

木蟲 (小有名氣)
金蟲

木蟲 (小有名氣)
金蟲

木蟲 (小有名氣)
金蟲

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