钛合金机械盘件锻压工艺的模糊PID控制
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摘要
对TC4钛合金机械盘件的锻压过程进行了常规控制和模糊PID控制,并进行了两种控制的机械盘锻件的力学性能、耐磨损性能和显微组织的测试、分析和比较。结果表明,与常规控制相比,模糊PID控制的锻件的抗拉强度和屈服强度分别增大了32 MPa和38 MPa。当磨损时间分别为5、10、15、20、25 min时,磨损体积分别减小了~3×10~(-3)、7×10~(-3)、11×10~(-3)、14×10~(-3)、17×10~(-3)mm~3。经模糊PID控制后,机械盘锻件的晶粒细化,组织较均匀,力学性能和耐磨损性能均优于常规控制。采用模糊PID控制提高了机械盘锻件的质量。
The forging process of TC4 titanium alloy mechanical discs was controlled by conventional control and fuzzy PID control. The mechanical properties, wear resistance and microstructure of two kinds of mechanical disc forgings were tested, analyzed and compared. The results show that compared with that by conventional control, the tensile strength and yield strength of the forgings controlled by fuzzy PID increase by 32 MPa and 38 MPa, respectively. When the wear time is5,10,15, 20, 25 min, the wear volume decreases by 3 ×10~(-3), 7 ×10~(-3), 11 ×10~(-3), 14 ×10~(-3), 17 ×10~(-3) mm~3, respectively. After fuzzy PID control, the mechanical disc forgings have fine grain and uniform microstructure, the mechanical properties and wear resistance are better than those of the conventional control. Using fuzzy PID control improves the quality of mechanical disc forgings.
The forging process of TC4 titanium alloy mechanical discs was controlled by conventional control and fuzzy PID control. The mechanical properties, wear resistance and microstructure of two kinds of mechanical disc forgings were tested, analyzed and compared. The results show that compared with that by conventional control, the tensile strength and yield strength of the forgings controlled by fuzzy PID increase by 32 MPa and 38 MPa, respectively. When the wear time is5,10,15, 20, 25 min, the wear volume decreases by 3 ×10~(-3), 7 ×10~(-3), 11 ×10~(-3), 14 ×10~(-3), 17 ×10~(-3) mm~3, respectively. After fuzzy PID control, the mechanical disc forgings have fine grain and uniform microstructure, the mechanical properties and wear resistance are better than those of the conventional control. Using fuzzy PID control improves the quality of mechanical disc forgings.
引文
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