新型起重机缓冲防护用泡沫铝复合板性能研究

Study on the performance of aluminum foam composite panels for new crane buffering protective component

响应国家聚焦绿色低碳的号召,研发新型材料替代传统缓冲器材料,采用Sn-4Zn钎料,通过超声辅助钎焊制备了泡沫铝复合板,分析了钎焊接头的微观组织,通过霍布金逊压杆(SHPB)装置研究了泡沫铝复合板的减载缓冲性能,使用Ansys对泡沫铝复合板在通用桥式起重机的工况下进行了模拟仿真。结果表明:超声钎焊制备的泡沫铝复合板存在良好的冶金结合,钎缝微观组织为β-Sn+Sn-Zn共晶+α-Al;泡沫铝复合板在冲击过程中存在良好缓冲吸能性能,适合用作吸能元件;在桥式起重机工况下,泡沫铝复合板呈现出优良的减载缓冲能力,能够满足作为二道防护构件用于桥式起重机。

In response to the national call to focus on green and low-carbon,new materials are developed to replace the traditional buffer materials,using Sn-4Zn brazing filler metal,the aluminum foam composite panels was prepared by ultrasonic-assisted brazing,and the microstructure of the brazed joint was analyzed.The unload and buffering performance of foam aluminum composite plate was studied through the split hobkinson pressure bar(SHPB)device,and be simulated under the working condition of general bridge crane byAnsys.The results show that themetallurgical bonding properties of aluminum foam composite panelsprepared by ultrasonic brazing is good,and the microstructure of the brazing seam isβ-Sn+Sn-Zn eutectic+α-Al.The aluminum foam composite panels have good buffering and energy absorption properties duringimpacting process,and itis suitable to use as absorbers energy element,under the condition of bridge crane,the aluminum foam composite panels shows excellent load shedding and buffering capacity,which can meet the requirements of using as a secondary protective component for bridge cranes.