According to the optimized process scheme, the resource consumption, energy consumption and carbon emission in the compound mold forming process of Moldless sand casting are calculated. The mold production and processing process only takes the sand mold 3D printing process of No. 3# mold as an example, as shown...
The quantitative calculation of resource consumption is based on the resource consumption demand model and combined with the field records in the actual production process to obtain relevant data. It is mainly considered from three aspects: material resources, energy resources and human resources. The energy consumption per unit casting...
Modelling 1) A set of solid wood samples shall be placed at the designated position of the outer skin, with 50 characters protruding 5mm from the shell. 2) First build the middle box, rebuild the lower box, and then build the upper box. Position between the upper, middle and...
Modelling 1) A set of solid wood samples shall be placed at the designated position of the outer skin, with 50 characters protruding 5mm from the shell. 2) First build the lower box, and then build the upper box. Position between the upper and lower boxes. 3) Sprue Φ...
1. Hardness test (1) Macrohardness Thbrv-187.5 electric broville hardness tester is mainly used for macro hardness analysis of samples. As the sample is chromium white cast iron, HRC Rockwell hardness should be used to test. Check the hardness meter with standard hardness block, and the hardness value checked shall...
1. Sample preparation (1) Sample grinding and polishing Use pg-2da metallographic sample polishing machine to pre grind the sample with metallographic sandpaper, and wash the sample with water continuously during the process to keep the grinding surface free of foreign matters. After the pre grinding, the steel special polishing...
1. Alloy melting The alloy was melted in 500 kg medium frequency induction furnace in air atmosphere. The raw materials used in the experiment are alloy, including 20CrMnTi scrap, high carbon ferrochromium, high carbon ferromanganese, ferromolybdenum and carburizing agent. In the smelting process, the temperature is controlled at 1480...
The main equipment of pressure casting experiment includes liquid die forging machine, special concave convex die, pouring ladle and pouring chute. The hydraulic forging machine is y32-1600t four column vertical liquid forging machine designed and manufactured by Hebei Hongkai Heavy Machine Tool Co., Ltd. its appearance is shown in...
The raw materials used in the experiment are two kinds of alloy composition, including low chromium hypoeutectic white cast iron (alloy 1) and high chromium eutectic white cast iron (alloy 2). In order to reduce the difference of alloy composition caused by different heats, each kind of alloy is...
The effects of pressure on solidification structure, including nucleation rate, undercooling and diffusion coefficient of alloy elements, provide a good theoretical and practical basis for this study. Therefore, it is a new method to improve the solidification structure of chromium alloy by pressure casting. The morphology and distribution of...