(1) The hot spot is at the top of the container, and the hot spot solidifies at last and the feeding is blocked by the surrounding, so the feeding condition is poor, and there is a great tendency to produce shrinkage defects. In order to reduce the adverse effects...
The necking riser is used at the top of the spent fuel container, and the riser is designed according to the sectional proportion method. The wall thickness of spent fuel container made of ductile iron is 520mm Dr = 0.6 ＞＜ 520 = 312mm, rounded to 320mm; HR =...
Raw materials: high purity pig iron (jbt11994-2014), 75 ferrosilicon; Spheroidizer: mgre6-l rare earth magnesium spheroidizer, particle size 4? ２５ｍｍ； Inoculant: high calcium barium inoculant, particle size 3-8mm; sulfur oxygen inoculant, particle size 0.3-0.8mm. The self-designed 16 channel temperature measurement system was used to measure the temperature of 45 °...
The most commonly used spheroidizers in industry are magnesium, re and calcium. Magnesium has the strongest spheroidizing ability, but its boiling point is much lower than that of molten iron. When magnesium is used as spheroidizing agent, its vaporization is serious, its absorption rate is low, and it lacks...
Germany took the lead in the development of ductile iron nuclear spent fuel container, and the application field of ductile iron has been greatly expanded. According to their own actual situation, various countries have formulated relevant standards for ductile iron, such as din1693 ductile iron standard (Germany), jisg5502-2007 ductile...
1.For the first time in China, the research and production of 100 ton ductile iron nuclear spent fuel container was carried out, and the metal mold casting process was proposed; 2.The temperature field and mold temperature curve of the 45 ° sector specimen were successfully measured by the self-developed...
Compared with the development of ductile iron nuclear spent fuel container at home and abroad, in the development of 100 ton ductile iron nuclear spent fuel container in Germany, the impact property of – 40 ° C has not been designed and measured, and sand casting process is adopted....
In 1991, Gong Jinying of Qiqihar Institute of light industry studied the relationship between the micro fracture morphology and mechanical properties of large section ductile iron container with different wall thickness. Fourteen tensile fracture specimens were selected from five different isothermal surfaces on the fan-shaped block for SEM observation....
The purpose of jsri and Nippon Steel is to develop and produce the ductile iron nuclear spent fuel container with the size of 4850 mm ＞＜ 2450 mm and inner diameter of 1490 mm. The test of small proportion specimen is used to master the key technology of producing...
Siempelkamp company of Germany began to develop 100 ton ductile iron nuclear spent fuel container in 1987. During the development of the container, the company found that the hardness of sand sample greater than 3Mpa is helpful to realize the riser free casting of 100 ton ductile iron nuclear...