摘要:A systematic study is made on the aging technology of two common cast aluminum alloys-ZL1.01 and ZL105 in this paper. It has studied the relations between the alloys, aging standards and their HB and stretching properties. The influence of magnesium content in the alloys on the HB and the natural aging effect of the alloys are also discussed. It offeres parameters for the suitable select of the aluminum alloy castings heat-treatment standards and their production technology.
摘要:The "dual-optimum" silica powder, which both in the size distribution and the particle shape and in the coating viscosity and the coating yield stress are optimum, not only maintains the good properties of the artificial bimodal distribution powder, but also is convenient in mass-production. The efficiency of ball grinding (ratio of fine powder increase) , the influence of milling parameters and the characteristics of wet as well as dry grinding have mainly been discussed in rheology. It is showed in practice that the smooth finish of rhe casting surface is Ra>1.252.5um
摘要:In the Paper, the function of RE to fix H, Ar bubbles to remove H,as well as the combined process to remove H with RE and Ar bubbles have been investigated. It has been shown that the combined process has characteristics of both short latent period and a high efficient of removing H. In addition it has the advantages of fixing H with chemical method and removing H with bubble method. It provides a new efficient non-toxic method of removing H for the metallurgical industry.
Liu Qingxing,Huang yuan,yang shijie,Mao Xiaofeng. Wang yunei
Issue 4, Pages: 23-27(1989)
摘要:Analyses of metallograghs, electron microscope and energy spec tram to the alloy layer with corrosion resistance properties show that the combination of alloy layer and base metal is of metallurgical reaction and the properties of the coat layer are similar to those of alloy powder. The application of the method to new products will be obvious to economization.
摘要:This paper studied the relationship between the sinter and microstructure of ceramic mould, and its sintering mechanism under the foundry conditions by the microscopic method, and the factors which effect of different raw material aggregates, dispensation, binder, temperature and additives on the sintering degree in ceramic mould are analysed. A new procedure suited for the foundry condition have been proposed.