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本发明涉及一种磨削辅助电化学放电加工工具及加工方法,该方法尤其适用于金属基复合材料的加工。所述磨削辅助电化学放电加工工具包括ECDM电极以及设于所述ECDM电极上的磨料层,所述磨料层主要用于移除加工过程中火花坑周围形成的重铸材料。实施本发明在对难以加工的材料进行加工时能够增加材料的去除率,获得更好的表面质量,并且大大地延长了加工工具的寿命。 [Detail]
The invention provides a three-dimensional ultrasonic imaging system which comprises an ultrasonic probe, a camera, a positioning module, an ultrasonic scanner and a computing module; wherein the camera is attached to the ultrasonic probe; the positioning module is placed within the viewfinder range..... [Detail]
A vertical micro-injection molding machine, comprising: a plasticizing unit, which features a conveying path, the conveying path in which the molten material has a screw conveyor; an injection means for receiving from a good measure of the plasticizing unit molten material; one injection molding, fr..... [Detail]
Tags: Shaping
本发明涉及具有形状记忆性的聚氨酯、水性形状记忆聚氨酯组合物及其制备方法、形状记忆织物及其制备方法。所述聚氨酯为将下列组分反应制备的预聚物在水中继续反应所得到的聚合物:二异氰酸酯;含羟基低聚物;含有活泼的氢基团的扩链剂和含羧基的扩链剂;含有碱性基团的中和剂;封端剂;交联剂以及任选的催化剂,其摩尔比为二异氰酸酯∶含羟基低聚物∶扩链剂∶中和剂∶封端剂∶交联剂∶催化剂=0.8~1.6∶0.2~0.8∶0.4~1∶0.2~0.6∶0~1.2∶0~0.4∶0~0.02其特征在于所述聚氨酯以不同摩尔数量的异氰酸根和羟基(NCO/OH=0.8~1.6)封端,所述聚氨酯具有在-30~100℃范围内的形状转变温度..... [Detail]
一种超声波换能器驱动器,所述驱动器具有大磁致伸缩元件、用于在机械压力下保持大磁致伸缩元件的紧固件、用于提供偏磁场的第一磁场产生器、用于提供磁性驱动场的第二磁场产生器、以及用于在磁致伸缩元件中引导磁场通道的磁性回路。用于接合装置的超声波换能器具有:在较小端处具有接合工具的角状部以及邻接至其上的安装桶状部。所述驱动器连接到角状部的较大端。 [Detail]
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