ZHY casting successively adopts two trial casting schemes of bottom injection and top injection to produce the complex ductile iron parts. The gating system of lost foam iron castings generally adopts bottom injection or side injection. The reason is that in general, lost foam iron castings can realize sufficient...
Iron castings are widely used in various mechanical equipment, construction, metallurgy, agricultural machinery, national defense industry and other fields. In the machinery manufacturing industry, iron castings account for about 40-85% of the mechanical weight. There are many kinds of cast iron castings, and their weight varies from light to...
More advanced methods are adopted to accurately predict the shrinkage cavity and porosity defects in the solidification process of steel and iron castings. The application of display list, alternating refresh and double buffer technology to complete high-quality dynamic display and observation, greatly enhance the performance of dynamic observation simulation...
The foundry industry has a civilization history of more than 6000 years in China, and now it is facing the major challenge of the new technological revolution. As we all know, casting is an important part of machinery manufacturing industry and the mother of industry, which plays an important...
The application of iron mold sand coating process for mass production in China began with single cylinder crankshaft. After years of development, the scope of application has been expanding. In addition to castings such as crankshaft, camshaft, balance shaft, valve body, shell and steering knuckle, it has also been...
Comparing the cooling curves of sand mold, iron mold sand coated casting and metal mold casting, it can be seen from the figure that the cooling rate of iron mold sand coated casting is three times that of sand mold, but far lower than that of metal mold, so...
How to calculate the price of iron castings: 1.Confirm whether we can produce the casting. We need to check whether we can use sand casting process to produce rough castings. Some may use wet sand, some may use resin sand, or shell casting, or automatic molding process. Wet sand...
The apparent shrinkage time of iron castings only accounts for a part of the total solidification time, and the external feeding only plays a role in the apparent time. Therefore, the solidification of iron casting riser does not have to be later than the casting, and its shrinkage supplement...
The physical model of complete superposition of equilibrium solidification expansion and shrinkage is to imagine a cast iron alloy composition, and its total shrinkage is equal to the total graphitization expansion. If the shrinkage and expansion per unit time can be controlled in the ratio of 1:1 from beginning...
The first is the design process of iron castings. When designing, in addition to determining the geometry and size of iron castings according to working conditions and metal material properties, the rationality of design must also be considered from the perspective of casting alloy and casting process characteristics, that...