Yang H.-J.,Yinfeng Foundry Co.
Zhuzao/Foundry | Year: 2015
In order to solve the problems in gas evolution testing, which include that retained materials in the silica tube affect testing result, the available time for testing are too short to meet requirement, testing results among the testers are hard to be compared, we carefully observed and analyzed the various tester and method, and adopted a series of measures. And a "cold tube method" tester was used to test. The problems mentioned above were solved. At present, these methods have been applied to some branch company, and achieved a remarkable effect. ©, 2015, Chinese Mechanical Engineering Society. All right reserved. Source
Zou R.-J.,Fujian Tianzun Casting Industry Co. |
Han Y.-W.,Yinfeng Foundry Co.
Zhuzao/Foundry | Year: 2013
High barium inoculants (10%Ba) are used to carry on multiple inoculations to produce large and thick machine tool products whose performance and metallographic structure, with a little or without precious metal (Cu, Mo) alloys addition, meet the requirement of HT300. Moreover, the casting body has a good uniformity with its hardness ranging from HB190 to HB220, which solves the problem of the big difference between surface and internal hardness. Source
Li G.,Yinfeng Foundry Co. |
Liu Y.,Shenyang Auto Industry College |
Su Y.,Yinfeng Foundry Co. |
Wang E.,Northeastern University China |
Han K.,CNRS French National High Magnetic Field Laboratory
China Foundry | Year: 2013
To investigate the influence of high magnetic field (HMF) on the solidification microstructure of Cu-25wt.%Ag alloy, the Cu-25wt.%Ag alloy was prepared under HMF of 12 T, and for comparison, the alloy solidified without HMF was also fabricated. Macro and microstructures of the alloys were observed using the stereomicroscope, and scanning electron microscope, field emission scanning electron microscopy. The weight percentages of the pro-eutectic and eutectic, Cu phase and Ag phase in eutectic, and precipitates of Ag phase in pro-eutectic were analyzed by using of IPP software. Results show that the morphology of the column dendrites changes into cellular dendrites and the grains are refined under HMF of 12 T Meanwhile, the thickness of the eutectic wall increases, but the sizes of Cu phase and Ag phase and the eutectic lamellar spacings are decreased. The Ag precipitates in the Cu matrix become coarser and sparser. The weight percentage variation of the phases in the microstructure and the Cu-Ag binary phase diagram reveals that the eutectic point moves to the left of the eutectic point in the equilibrium condition and the supersaturated solid solubility of Ag decreases under HMF. Source
Li G.-M.,Yinfeng Foundry Co. |
Liu Y.,Shenyang Auto Industry College |
Zou X.-Z.,Chongqing Instrument Materials Research Institute |
Yu F.-L.,Yinfeng Foundry Co. |
And 3 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2013
The directional solidification experiment of Cu-10%Ag alloy was carried out under horizontal static magnetic field, the macrostructure, microstructure and hardness of Cu-10%Ag were investigated. Without magnetic field condition, it was found that the grains were coarser and longer, the diameter arms and spacing of Cu dendrites were coarser too, moreover, the orientation of the dendrites was uniform, meanwhile, the size of the eutectic was larger; with 1T horizontal magnetic field, the grains increased quantitatively and became refinement, the diameter and spacing of Cu dendrites became thinner, and the orientation of the dendrites was random, moreover, the size of the eutectic was smaller and the hardness increased too. Though comparing the difference of the proeutectic Cu dendrites and eutectic with and without horizontal magnetic field, the mechanism was discussed in this paper. Source
Nie S.,Yinfeng Foundry Co. |
Wang J.-D.,Yinfeng Foundry Co. |
Yin J.-W.,Jinan Shengquan Group Co. |
Cui F.,Jinan Shengquan Group Co.
Zhuzao/Foundry | Year: 2012
The high work intensity, the low production efficiency, the poor coating surface quality and some other problems existed in brush coating technology during traditional resin sand casting production. Flow coating technology can decrease the work intensity and improve the working environmental, moreover, meet the requirements of the resin sand casting continuous production. The casting size accuracy and surface quality were improved. The technology performance and index of flow coating mixture were introduced in the factory. The common problems and solution measures in flow coating process were summarized in this paper. Source