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 […]
Reasonable experimental device is designed for the measurement of thermophysical parameters of glass quartz sand used in actual sand casting
The changing trend of the influence of pouring temperature on the average mold filling speed of molten metal in lost
With the rapid development of China’s energy, metallurgy and other industries, the trend of large-scale equipment urgently needs high-quality steel
Since the early 1980s, fata company of Italy, in cooperation with sapolest company of France, has designed and manufactured several
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
The research field of Solidification Numerical Simulation of sand castings abroad started early, which began in the 1960s. Its development
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
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 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 selection of negative pressure degree is particularly critical in vacuum negative pressure lost foam casting. A large number of
Lost foam casting molding is completed by model disappearance, decomposition products escaping from the mold, and liquid metal replacement model.
Lost foam casting method was first successfully tested by American h.f.shroyer in 1956, and was published in the form of
On the whole, China’s technology is still at a low level. There is still a big gap between China and
Foamed plastic plays a very important role in lost foam casting, and its quality will directly affect the quality of
The “white zone” technology and equipment of China’s lost foam casting is the weakest link, mainly including the following: Development
Nodular cast iron intercooler base pipe is an innovative design for the company’s large internal combustion engine. The material is
The lost foam casting method takes foamed plastic expandable foam polystyrene or polymethylmethacrylate as the model, and applies fire-resistant coating
Insufficient attention to the basic research work of lost foam casting technology, too little investment and low level have become
Puqiao company of the French group obtained the patent of EPC isostatic pressing process, and used this process to organize
As early as the late 1970s, China has studied the application of lost foam casting in mass production, which is