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.
Foundry, a traditional industry with a civilization history of 6000 years in China, is increasingly facing the challenges of the
1. Design of metal subsidy for sand casting In order to facilitate the comparison and production of subsidies, only the
According to the formation mechanism of shrinkage cavity and porosity in sand casting and based on the numerical simulation of
1. Main quality problems of rolls Produced φ 800 mm × 1880 mm high chromium cast iron roll (as shown
In sand casting production, metal subsidies are often set to extend the feeding distance of the riser. In most cases,
The three-dimensional heat transfer mathematical model of numerical simulation of solidification process of sand casting is unsteady heat conduction partial
The medium frequency furnace is used to produce cast iron rolls of various purposes and materials, and the core is
As shown in the figure, it is produced with the help of computer simulation φ 400mm and φ Rough finished
The material of a cast impeller is aluminum silicon alloy zalsi9cu2mg. The cast impeller is not allowed to have casting
According to the characteristics of grey cast iron brake discs produced by electric furnace, three kinds of HT200 molten iron
According to the theory of heat transfer, the process of sand casting high-temperature metal from pouring into the mold to
The figure below shows the simulation results of the pressure field distribution of molten metal at the completion of pouring.
Based on AnyCasting, the process simulation and optimization of large aluminum silicon alloy casting impeller are carried out, and the
1. Size of compound phase Figure 1 shows the microstructure of the defective sample and the normal sample. Through comparison,
