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Su Y.,Shenyang Machine Tool Yinfeng Foundry Co. | Meng J.,Shenyang Machine Tool Yinfeng Foundry Co. | Fan J.,Shenyang Machine Tool Yinfeng Foundry Co. | Yang J.-D.,Shenyang Machine Tool Yinfeng Foundry Co. | And 2 more authors.
Zhuzao/Foundry | Year: 2010

The causes of shrinkage and dispersed shrinkage existed in wind-power generator front cover were analyzed, and the defects were eliminated by measures such as improving the gating system, increasing the melt iron quality, enhancing the nodularization and inoculation. Finally, the casting rejection rate was decreased, and a good economic benefit was obtained. Source


Yang M.,Shenyang Machine Tool Yinfeng Foundry Co. | Liu Z.-Q.,Shenyang Machine Tool Yinfeng Foundry Co. | Jia X.-B.,Shenyang Machine Tool Yinfeng Foundry Co.
Zhuzao/Foundry | Year: 2011

The reason causes depression of skateboard bed saddle was analyzed, and the corresponding solutions were put forward. By taking a series of technical measures the rejection rate was reduced effectively, and obtained a certain economic benefit. The measures are that adjusting the addition amount of scrap steel and pig iron in smelting process to adjust carbon content of casting products, and changing the location of parting face and gates, so as to decrease the solidification shrinkage rate. Source


Su Y.,Shenyang Machine Tool Yinfeng Foundry Co. | Zhang C.-Y.,Shenyang Research Institute of Foundry | Liu D.-M.,Shenyang Research Institute of Foundry | Xue H.-T.,Shenyang Machine Tool Yinfeng Foundry Co. | Jin H.-D.,Shenyang Machine Tool Yinfeng Foundry Co.
Zhuzao/Foundry | Year: 2010

Ductile iron case casting is the key part of the wind power generator unit. During the production of lower case, many castings were rejected for the gas hole defect in the surface, which can result in the oil leakage. Analysis and investigation were carried out on the casting technology, and results show that the main reason caused the gas hole is that the exhaust of the core is not smooth, therefore the big gas evolution of resin bonded sand core produced during the casting process can not exhaust quickly. The casting technology was improved through adding gas vent in the core, to insure the exhaust channel between the mould and the core keep smooth during and after the mold filling. After improvement, the gas hole defect is almost eliminated. At the same time strengthening the production process management is also very important for production of castings with high quality. Source

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