提高机床夹具易磨损元件的耐磨性

本文对机床夹具易磨损元件采用45钢表面渗硼、渗钒和电火花强化硬质合金,其耐磨性都显著地高于碳素工具钢的耐磨性。

液压挖掘机液压系统油温过高的分析与控制

文章对液压挖掘机的液压系统中油温过高产生的危害进行了简单阐述,同时对该现象产生的原因进行了全面分析,并对如何消除液压系统的油温过高的问题提出了解决方法。

浅谈液压油污染的危害及控制

介绍了液压油污染物的种类和来源,分析了液压油污染造成的严重危害,并提出了行之有效的控制措施。

浅谈三牙轮钻头井下判断与处理

牙轮钻头在使用过程中主要是根据使用时间来分析判断钻头在井下工作情况,钻进时稍有疏忽会发生掉大量有镶齿、牙轮尖端和牙轮整体的事故。浅谈三牙轮钻头先期损坏的原因、三牙轮钻头工作异常的起因及三牙轮钻头井下工况判断,防止牙轮钻头事故的发生。

改进HBT60型混凝土泵的技术措施

我公司早期购买的HBT60型闸板阀混凝土泵功率小、出口压力低、结构设计落后,加上使用年限已久,输送缸磨损严重,液压系统泄漏等问题,效率很低,即使更换已磨损的元件,因其技术性能参数低,也不能满足当前施工的要求.因此有必要在原来的基础上提高泵送性能参数,对其不合理结构进行了改进,使其升级为HBT60G.

Experimental investigation of subsurface damage depth of lapped optics by fluorescent method

Subsurface defects were fluorescently tagged with nanoscale quantum dots and scanned layer by layer using confocal fluorescence microscopy to obtain images at various depths. Subsurface damage depths of fused silica optics were characterized quantitatively by changes in the fluorescence intensity of feature points. The fluorescence intensity vs scan depth revealed that the maximum fluorescence intensity decreases sharply when the scan depth exceeds a critical value. The subsurface damage depth could be determined by the actual embedded depth of the quantum dots. Taper polishing and magnetorheological finishing were performed under the same conditions to verify the effectiveness of the nondestructive fluorescence method. The results indicated that the quantum dots effectively tagged subsurface defects of fused-silica optics, and that the nondestructive detection method could effectively evaluate subsurface damage depths.

实施液压元件清洁度质量控制

液压元件对系统影响很大，介绍了实施元件清洁度质量控制的有关技术。