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Huangshi, China

He X.-F.,Huangshi Xinxing Pipes Co. | Lei C.-P.,Huangshi Xinxing Pipes Co. | Shuai D.-G.,Xiangyang Jinnaite Machinery Co. | Peng H.-J.,Huangshi Xinxing Pipes Co. | Zhu Z.-W.,Foseco Foundry China Co.

Based on the material features of Cr30A and the analysis of current shrinkage, burning-on, crack and other defects on wear and corrosion resistance impeller casting, the original feeding system was optimized through the improvement of the feeding effect of riser and technical process of sand core making. And a better solution for the defects was put forward, such as shrinkage, burning-on and crack on casting. The yield of qualified castings could be further optimized by the computer simulation analysis and the usage of exothermic riser. Source

He X.-F.,Xiangyang Jinnaite Machinery Co. | Shuai D.-G.,Xiangyang Jinnaite Machinery Co. | Lei C.-P.,Huangshi Xinxing Pipes Co. | Xu F.-Q.,Xiangyang Jinnaite Machinery Co. | And 2 more authors.

Aiming at thin-wall wear-resistant pipe fitting for the truck mounted concrete pump, combining the unique advantage of high manganese steel with reasonable technical design, a wear-resistant pipe fitting with inner-compact structure could be produced. This technical process has improved the hydrotest rate and service life of wear-resistant pipe fitting. And the dimensional accuracy and appearance quality were also significantly improved. Source

Lei C.-P.,Huangshi Xinxing Pipes Co. | He X.-F.,Huangshi Xinxing Pipes Co.

The characteristics, requirements and the casting difficulties of large-scale wind power casting were summarized. The molding method, design technological parameter selection of mould and core, gating system and melting and pouring of the casting were presented. One simple box and core assembly casting technique was introduced. The cause of casting defects such as shrinkage, degradated spheroidisation, segregation and chilling tendency was analyzed and preventive measures were put forward, which provides a technical guidance for the production of large-scale wind power castings. Source

Lei C.-P.,Huangshi Xinxing Pipes Co. | Zhang K.-N.,Xinxing Ductile Iron Pipes Co. | He X.-F.,Huangshi Xinxing Pipes Co.

Aiming to ductile iron pipe fittings product interface type and the characteristic of the species diversity, in order to reduce the mold production costs, the mold design of pipe fittings was optimized, the mold was produced with the swap interface and assembling mode, the exchange of various form interface was achieved for the same specification pipe fitting product. By designing of the interchanging type assembled pattern, various specifications and varieties of pipe fittings were used flexibly, the mould production costs on the basis of the original save 40%-50%. Source

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