About Sara Wu
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Entries by Sara Wu
The software is used to calculate the temperature field of the casting solidification process. Finally, the result of the temperature field is displayed by the post-processing module. The casting temperature during solidification 240s, 780s, 840s, and 900s is selected, as shown in Fig. 6. The casting material is nodular graphite, the casting iron, the liquidus […]
Abstract: Based on the original process, the simulation software developed by Visual C++ development tool has been adopted to numerically simulate the solidification process of φ120 wear- resistant casting ball. By considering the numerical simulation results and theoretical analysis, in combination with actual production process optimization, the suitable process scheme has been finally obtained. The […]
The tensile specimen (cast steel) is cut from the button spindle with the size as shown in Figure 5 and the thickness is 1mm.
HU Zhi-jun, ZHAO Xiao-peng, YANG Yi-tao (School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China) Abstract： The influences of normalizing and tempering temperature on mechanical properties and microstructure of low alloy wear-resistant cast steel were investigated by using a vacuum arc furnace in lab situations. The results show that normalizing can refine the […]
Without heat treatment, the as-cast cast iron grinding ball’s microstructure is austenite + eutectic carbide, which is heated at lower quenching temperature (such as below 950 °c). After Air Cooling, the microstructure contains austenite, eutectic carbide, and martensite; there is also a large troostite (see Fig. 2A). At higher quenching temperature (above 980 °C), the […]
Abstract: The effects of heat treatment on the hardness, impact toughness, and casting high chrome grinding ball’s microstructure have been investigated. The results show that the hardness of the ball quenched at 980 ℃and then tempered at 400 ℃ is up to 60. 5 HRC; meanwhile, the impact toughness of that ball is 6. 8J/ […]
Mao Shuang Liang, Shui Heng Yong, Chen Shan shan, Zhao Ai min ( 1. Shanxi Baiyi Machinery Co., Ltd., Taiyuan 030003, China; 2. Research Institute of Metallurgy Engineering, Beijing University of Science and Technical, Beijing 100083, China) Abstract: The chemical composition of Cr26 high chromium cast iron and the effects of heat treatment on its […]
The hardness of the tested sample after heat treatment at medium temperature (740 ~ 820 °c) is shown in Table 3. The corresponding metallograph is shown in Fig. 2. It can be seen that the hardness of hypoeutectic high chromium cast iron after heat treatment at medium temperature has significant change compared with the as-cast […]
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