罗定职业技术学院成立于2001年5月，是经国家教育部备案、广东省人民政府批准、由云浮市人民政府举办的公办全日制普通高等学校，前身是创建于1928年的广东罗定师范学校。 学院位于广东省首批历史文化名城——罗定市城区。校园环境优雅，文化底蕴深厚，人文氛围浓郁。设立有国家职业技能鉴定所，建立了云浮市云计算大数据人才培养基地、云浮市电子信息产业技术服务中心和云浮市南江文化研究中心，主办有《罗定职业技术学院论丛》季刊，是广东省语言文字工作先进单位、广东省社会科学普及示范基地、广东省中小企业培训示范基地和云浮市文明单位。 根据2019年学校信息显示，校园占地面积约415亩，建筑面积约16万平方米，教学科研仪器设备总值5204.65万元，图书55.23万册，学院具有五大类实训基地，实训室共121个；学院开设招生专业46个；全日制在校生约10800人。
The CoCrMo alloys were successfully prepared by selective laser melting (SLM), the microstructures of the CoCrMo alloys in transverse and longitudinal planes were characterized by optical microscope (OM), scanning electron microscope (SEM), and electron backscattering diffraction (EBSD). The results show that the CoCrMo alloys in longitudinal plane show the typical fish scale morphology, the average diameter of the grains is 44.2 μm, showing a weak <100> and <111> weave; the CoCrMo alloys in transverse plane mainly consist of the fine hexagonal cellular structure, the grain orientation preferentially grows along the <110> direction, and the average diameter of the grains is 29.5 μm, which is 33.26% lower compared with that of the longitudinal plane. The proportion of small angle grain boundaries (volume fraction), hardness, and friction coefficient of the specimens in transverse plane are 39.6%, HV 435, and 0.5958, while those of the longitudinal plane are 28.6%, HV 416, and 0.7605, respectively. The SLM-formed CoCrMo alloys have the obvious anisotropy both in microstructure and mechanical properties. The higher hardness of the transverse plane-formed specimens is attributed to the fine-grained reinforcement and higher initial dislocation density, and the excellent wear property is mainly attributed to the cytosolic microstructure, which are easy to adhere to the wear track and improve the wear resistance.
In order to solve problem of difficult machining of hydraulic turbine runner, and improve the machining efficiency and reduce the machining cost, the optimization of NC machining process for hydraulic turbine runner was proposed. The 3D solid model of the runner was established by using Pro/E, and the NC machining process of the runner was designed. The NC machining process simulation of hydraulic turbine runner was carried out by using the related technologies of complex surface NC machining,and the NC code and machining path were generated. The results shown that the NC machining technology based on Pro/E could optimize the machining process of the turbine runner.
Based on L village in north Guangdong, this paper expounds the roles, structures and demands of multi-subjects in underdeveloped areas’ r ural living environment management. Different stakeholders are the main body of underdeveloped areas’ r ural living environment management, multiple Cooperation promotion of rural living environment management is the result of underdeveloped areas’ s ocial development and the active choice of stakeholders. Improve underdeveloped areas’ r ural living environment management needs efforts from stakeholders, the government should product extremely builds multivariate collaborative management platform, rural two committees and farmers should take the initiative to participate in management, enterprise, clansman organization and association organization need to promote management ability, Public opinion media should build good management atmosphere, scientific research institutions must provide good advisory services.
