生物制氢混合器整体涡轮高效切削技术研究  

Study on High Efficiency Cutting Technology of Integral Impeller in Bio-hydrogen Mixer

作　　者：陈光慧 范彩霞[1] 贾华贵 张业祥 CHEN Guang-hui;FAN Cai-xia;JIA Hua-gui;ZHANG Ye-xiang(Institute of Technology,HUANGHE S&T College,Zhengzhou 450063,China)

机构地区：[1]黄河科技学院机械工程学院,河南郑州450063

出　　处：《装备制造技术》2019年第3期107-110,共4页Equipment Manufacturing Technology

基　　金：2018年度国家级大学生创新创业项目(201811834017)

摘　　要：利用混合菌产氢的关键工艺是搅拌工序,混合器的性能常与搅拌时流体速度、叶轮产生的总泵送能力以及罐中的总流量有关。针对30Cr13叶轮切削余量大、可切削性差的问题,首先用以车代铣工艺去掉28.8%的切削余量;其次通过叶片加工过程几何仿真,确定切削刀具规格和加工策略;最后采用Ti Al N基纳米涂层钨钴类硬质合金刀具进行切削实验,保持切削深度(1.5 mm)和进给量(0.2 mm/r)不变,通过光学显微镜、扫描电镜及能谱分析,切削速度位于142m/min时刀具耐用度最好,其耐用度为43.16 min,并建立刀具寿命和切削速度间的数学模型,可以对不同生产纲领下的切削速度和刀具耐用度的合理取值进行预测,从工艺规划到切削参数选择全面实现定制叶轮的高效切削。Mixing process is the key stage of hydrogen production by mixed bacteria, the mixer performance is often related to the fluid velocity, the total pumping capacity produced by impeller and the total flow in the tank. Aiming at the poor machinability and larger cutting allowance of impeller which is made of 30Cr13 material, first, used "turning replaced milling" process to removed 28.8% cutting allowance. Second, set the cutting tool types and machining strategies according to the toll path simulation of impeller. Third , the cutting experiments were carried out with TiAlN based nano-coated tungsten -cobalt cemented carbide tools,kept cutting depth (1.5mm) and feed rate (0.2mm/r) constant, the best tool life is 43.16 minutes when cutting speed was 142m/min by means of optical microscope, scanning electron microscope and energy dispersive spectrum analysis, the mathematical model of tool life and cutting speed is established, the reasonable value of cutting speed and tool life under different production programs can be predicted, realized high efficiency cutting of impeller from process planning to cutting parameter setting.

关 键 词：混合器 涡轮 30Cr13 硬质合金刀具 高效切削 刀具寿命实验 

分 类 号：TG75[金属学及工艺—刀具与模具]