摘要:An exploratory investigation to study the meehanical properties of Al 6% Zn-0.5%Mg Alloy thin-sectioned investment castings in plaster moldshas been made in this paper Gas pressure up to 10 atmosphere were applied and maintained for certain time during solidification It shows that pressur may be contyibute to impede or prevent shrinkage and gas porosity, so that the mechanical properties of the alloy remarkable are increased.
摘要:This paper has investigated the influence of manganese on the mcha-nical properties,wear resistance and microstructure of as cast antimony bronze and briefly elescvibed the action and adition range of zinc, phosphorus and rare-earth cerium- lanthanum.A new antimony bronze has been researched and may be used for the substitute materials of 6-3, ZQSn5-5-5 and other tin bronze in sliding bearing.
摘要:The article has dicussed good applaicating effect on pouring test of tur-bing blades of investment casting with foam ceramic filter, and has introdu-ced. The properties of type M-l of foam ceramic filter and the technical method of the pouning test
摘要:In the paper, the role of rich-Y rare earth in the modification of ZL102 alloy has been introduced. The optimum amount of rare earth added to the alloy and the influence of holding time and remeltiagstimes on the modification has ceen discussed.lt has been point out that rich-Y rare earth has an excellent modifying effect on ZL102 alloy, there will still be a good effect of modification after holding time as long as 4 hours and remelt times as high as 9. After adding rich-Y rare earth, no manifest changes in the casting properties of the alloy has been observed.
摘要:This paper will introduce the effect of sodium modifier on the shape of porosity and distribution about cast alloy ZL104. During solidification, using the platelike castings and sand mold at the same process. Tested results show that dispersed porosity usually exists in sodium modified castings Castings which are not modified with sodium, are liable to have concented spongy porisity. Pouring temperature does not has apparent influence to it.