Thermoelastoplastic model in thermal stress model of sand casting
At present, the THERMOELASTIC-PLASTIC model in the thermal stress model of sand casting is widely used. The model does not […]
At present, the THERMOELASTIC-PLASTIC model in the thermal stress model of sand casting is widely used. The model does not […]
Figure 1 shows the displacement and overall deformation distribution of sand casting frame after cooling, dropping and unpacking. As can
Reasonable experimental device is designed for the measurement of thermophysical parameters of glass quartz sand used in actual sand casting
The test results are shown in the table. Pattern density (g/I) Total mold filling time (s) Average filling speed (cm/s)
The changing trend of the influence of pouring temperature on the average mold filling speed of molten metal in lost
After the sand casting frame is poured, it is cooled in the mold cavity until the central riser reaches a
With the rapid development of China’s energy, metallurgy and other industries, the trend of large-scale equipment urgently needs high-quality steel
In the filling process of liquid metal in gray iron lost foam casting, there is an air gap between the
Since the early 1980s, fata company of Italy, in cooperation with sapolest company of France, has designed and manufactured several
The test results are shown in the table: Pouring temperature (℃) Total mold filling time (s) Average filling speed (cm/s)
In the post-processing results of stress field in ProCAST software, there is an option to judge the hot crack trend
China has also carried out numerical simulation research on solidification of sand castings since 1978. Although it started relatively late,
In terms of lost foam casting for mass production, it can be divided into two categories according to the current
Lost foam casting coating is different from traditional sand mold coating. The surface of lost foam castings is the inner
In Britain, the earliest application of lost foam casting is the British cast steel research and Trade Association, whose method
Due to the thick section structure and long solidification time of sand casting frame steel castings, the stress field in
The research field of Solidification Numerical Simulation of sand castings abroad started early, which began in the 1960s. Its development
High wear resistance, high hardness and good toughness are important indexes of bimetal composite pipe, which are directly related to
The sand cores in the inner cavity of the cylinder head produced by the coated sand process are (generally refers
Japan has used this method to produce large castings since the 1960s, such as Kobe iron Institute, which is still
In order to specifically and clearly study the temperature change of different parts of the rack with time, it is
Because the sand mold casting process is very complex and difficult to study, it still depends on experience to a
The coating raw material lost foam casting coating is composed of refractory, binder, carrier, suspending agent and special additives such
The United States was the first country to apply the lost foam casting method and was the first to carry
The theoretical research of lost foam casting started late. In the 1950s and 1960s, some research was carried out on
The frame is the key bearing part of all kinds of rolling mills. When rolling products, all kinds of rolling
The simulation analysis of the temperature field of the frame in sand casting includes the solidification of the frame in
The performance test of lost foam casting coating is a necessary condition to stabilize the production process and ensure the
Lost foam casting has outstanding advantages, which has attracted more and more attention of foundry workers in recent years. Lost
The setting of thermophysical parameters in the simulation process includes the determination of sand casting – zg230-450 and mold –