CAJ | 학술논문

采用显微硬度计和显微镜对磨损失效的混凝土输送管进行力学性能测试及显微组织表征.结果表明:输送管连接处相对于其他位置更易受到强烈的磨粒磨损而失效.对输送管连接处进行电火花沉积WC及堆焊Co表面强化处理后.输送管连接处的表层组织细小、均匀,其耐磨性能得到较大提高.
채용현미경도계화현미경대마손실효적혼응토수송관진행역학성능측시급현미조직표정.결과표명:수송관련접처상대우기타위치경역수도강렬적마립마손이실효.대수송관련접처진행전화화침적WC급퇴한Co표면강화처리후.수송관련접처적표층조직세소、균균,기내마성능득도교대제고.
The microstructure and mechanical properties of concrete duct were studied using micro-sclerometer, SEM and OM. The results show that the conjuctions are much easilier disabled by grain-abrasion than the other places of the concrete duct. After treated by electrical sparkle deposition of WC and bead weld of Co, respectively, the microstructure of surface layer is much smaller and well-distributed, and the wear resistance improves.