金属塑料复合材料的压制成型及结合强度
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摘要
以提高金属与塑料之间的结合强度为目标,对金属基体进行高能喷丸处理,使其表面自纳米化,并以高能喷丸和喷涂的工艺参数为试验变量,设计了正交试验方案,同时设计了压制成型模具并压制成型,最后采用垂直拉伸法对金属塑料复合材料的结合强度进行了测试,并研究了铸钢丸直径、喷丸压力、喷丸时间以及塑化温度对复合材料结合强度的影响规律,确定了使结合强度达到最佳的工艺参数组合。再运用数值拟合的方法,预测出结合强度最高的工艺参数组合,并对优化结果进行实验验证分析。结果表明,铸钢丸直径为4.96～5.04mm,喷丸压力为0.49～0.51MPa,喷丸时间为10.9～11.08min,塑化温度为278.2～282℃时制得的复合材料的结合强度最佳。
In order to improve the bonding strength between metal and plastic,the high-energy shot peening of the metal substrate is carried out to make the surface self-nanochemical,and the orthogonal experimental scheme was designed based on the process parameters of high-energy shot peening and spraying. At the same time,the press forming mold was designed and pressed.Finally,the bonding strength of the metal matrix composite was tested by vertical stretching method,and the diameter of the cast steel shot,the shot peening pressure,the shot peening time and the plasticizing temperature were studied. The in?uence of the bonding strength determines the combination of process parameters when the bonding strength was optimized. Then,using the numerical?tting method,the combination of process parameters with the highest bonding strength was predicted,and the optimization results were veri?ed by experiments. The results show that the diameter of the cast steel pellet is 4.96-5.04 mm,the shot peening pressure is 0.49-0.51 MPa,the shot peening time is 10.9-11.08 min,and the plasticizing temperature is 278.2-282℃. The composite material has the best bonding strength.
In order to improve the bonding strength between metal and plastic,the high-energy shot peening of the metal substrate is carried out to make the surface self-nanochemical,and the orthogonal experimental scheme was designed based on the process parameters of high-energy shot peening and spraying. At the same time,the press forming mold was designed and pressed.Finally,the bonding strength of the metal matrix composite was tested by vertical stretching method,and the diameter of the cast steel shot,the shot peening pressure,the shot peening time and the plasticizing temperature were studied. The in?uence of the bonding strength determines the combination of process parameters when the bonding strength was optimized. Then,using the numerical?tting method,the combination of process parameters with the highest bonding strength was predicted,and the optimization results were veri?ed by experiments. The results show that the diameter of the cast steel pellet is 4.96-5.04 mm,the shot peening pressure is 0.49-0.51 MPa,the shot peening time is 10.9-11.08 min,and the plasticizing temperature is 278.2-282℃. The composite material has the best bonding strength.
引文
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[3]Fan Genlian,Xu Run,Tan Zhanqiu,et al.Development of flake powder metallurgy in fabricating metal matrix composites:Areview[J].Journal of Metals,2014,27(5):806-815.
[4]Meredith C S,Khan A S.The microstructural evolution and thermo-mechanical behavior of UFG Ti processed via equal channel angular pressing[J].Journal of Materials Processing Technology,2015,219(8):257-270.
[5]谢良波.25Cr2Ni4W和30CrNi3合金钢高温锰系磷化处理技术研究[D].重庆:重庆大学,2010.Xie Liangbo.Study on high temperature manganese phosphating treatment technology of 25Cr2Ni4W and 30CrNi3 alloy steel[D].Chongqing:Chongqing University,2010.
[6]Andrew V,Sara T,Klaus K,et al.Orthogonal experimental design of titanium dioxide-poly(methyl methacrylate)electrospun nanocomposite membranes for photocatalytic applications[J].Journal of Environmental Chemical Engineering,2016,4(3):3 151-3 158.
[7]李进.PES/金属复合自润滑材料的制备及其摩擦磨损性能研究[D].镇江:江苏大学,2013.Li Jin.Preparation and tribological properties of PES/metal selflubricating composite materials[D].Zhenjiang:Jiangsu University,2013.
[8]程帅,钱善华,吴越.硅烷改性椰壳粉对热塑性弹性体表面性能的影响及应用[J].表面技术,2018(6):138-144.Cheng Shuai,Qian Shanhua,Wu Yue.Effect of silane-modified coconut shell powder on surface properties of thermoplastic elastomers and its application[J].Surface Technology,2018(6):138-144.
[9]王斌,崔沛,戴亚春.金属塑料复合材料压制烧结成型及性能[J].工程塑料应用,2018,46(7);68-73.Wang Bin,Cui Pei,Dai Yachun.Press-sintering forming and properties of metal plastics composites[J].Engineering Plastics Application,2018,46(7):68-73.
[10]Faria M C M D,Appezzato F C,Costa M L,et al.The effect of the ocean water immersion and UV ageing on the dynamic mechanical properties of the PPS/glass fiber composites[J].J o u r n a l o f R e i n f o r c e d P l a s t i c s a n d C o m p o s i t e s,2 0 11,30(20):1 729-1 737.
[11]Han Y,Li J,Huang G,et al.Effect of ECAP numbers on microstructure and properties of titanium matrix composite[J].Materials&Design,2015,75:113-119.
[12]简小刚,张允华.晶向对金刚石涂层膜基界面结合强度的影响[J].金刚石与磨料磨具工程,2014(5):1-5.Jian Xiaogang,Zhang Yunhua.Influence of crystal orientation on the bond strength of diamond coating film-based interface[J].Diamond&Abrasives Engineering,2014(5):1-5.
[13]王翔.不同基底材料与饰面瓷结合界面的实验研究[D].大连:大连医科大学,2012.Wang Xiang.Experimental study on the interface between different base materials and veneer porcelain[D].Dalian:Dalian Medical University,2012.
[14]田峰,杨辉.40Cr钢表面高能喷丸纳米化及其耐磨性能[J].表面技术,2013,42(5):52-54.Tian Feng,Yang Hui.Nano-energy shot peening nanometering and wear resistance of 40Cr steel[J].Surface Technology,2013,42(5):52-54.
[15]Santos J E,Gauzellino P M.Numerical Simulation in Applied Geophysics[M].Switzerland:Springer International Publishing,2016.