Foreign progress in numerical simulation of sand casting
The research field of Solidification Numerical Simulation of sand castings abroad started early, which began in the 1960s. Its development […]
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 –
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
1) Establishment of 3D solid model There is no solid modeling function in ProCAST software, and the three-dimensional solid model
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
The quality of bimetallic composite pipe has always been the focus of research, and its bonding interface directly affects its
Puqiao company of the French group obtained the patent of EPC isostatic pressing process, and used this process to organize
1) Production process of frame sand casting The sand casting of the frame adopts the pit shape and box cover,
As early as the late 1970s, China has studied the application of lost foam casting in mass production, which is
1. Chemical composition design When the diameter of roll body is more than 600 mm, the carbon equivalent is 3.8%
The rotary disc is the key component on the spindle of drilling machine, which needs high precision and certain hardness.