Feng Y.,North Heavy Group Co. |
Yun X.,North Heavy Group Co. |
Liu Y.,North Heavy Group Co. |
Huo Z.,North Heavy Group Co.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2015
The technological probelems in production of five picth gear rail by coated resin sand were described. Sand box is tilted to (20±5)° during moulding, and pouring was conducted at (1 540±10)℃ with pressure of (0.04±0.01) MPa and 2~3 pit pouring as well as heat preservation agent treatment. Through holding pressure for (300±5) s and cooling for 5 hours after pressure-exhausting and then shaking out, the appearance and inner quality of the gear rail parts exhibit satisfactory. ©, 2015, Journal Office of Special Casting and Nonferrous Alloys. All right reserved.