制备一次性碳质膜电极的新方法

报道了利用一种钢质模具在PVC底板上制作一次性碳质膜电极的新方法,并在此基础上探讨了影响该膜电极制备及其电化学特性的一些物理因素和化学因素.研究结果表明,用此方法制作的电极易于对其进行修饰,并用其做循环伏安扫描和电化学发光研究,表现出较好的电化学可逆性(ipa/ipc=1 16)、电化学发光重现性(RSD=1 5%,cLu=2.0×10-6mol/L,n=8)以及较好的灵敏度.

EXPERIMENT ON SURFACE INTEGRITY OF MILLING TOOL FOR HARDENED STEEL SKD11

To evaluate the new designed cutting tools for high-efficiency milling of the hardened die steel SKD11,surface integrities of millers with different geometric structures are analyzed, considering the surface roughness, micrograph of chips, surface microhardness, residual stress and metallurgical texture of the surface layer. The in fluences of geometric characteristics of different cutting tools and their wear characteristics on the surface integrity are studied. Results show that the milling tool with rake angle; 5 of the hardened diesteel. The generation of saw-tooth chips is depressed when a reasonable positive rake angle is selected. And the compressive residual stress is induced on the machined surface in milling the hardened die steel. The occurrence of surface softening is postponed by increasing the clearance angle and reducing the tool flank wear.

陶瓷酒瓶瓶口生产工艺探讨

主要探讨了陶瓷酒瓶瓶口的生产工艺,在分析传统陶瓷酒瓶生产工艺的基础上,提出一种采用钢质组合模具生产陶瓷酒瓶瓶口的生产工艺。它包括钢质组合模具的基本结构、生产流程及工艺。这种工艺不仅可以提高陶瓷酒瓶瓶口的规整度,还有利于产品质量的稳定和提升。