Fixed disk investment castings have different filling states during the initial process plan filling process. The filling state diagram for […]
1. Determination of pouring speed The pouring speed was calculated using the Kalgin formula in the experiment: Where: v is
1. Selection of runner The overall structure of the fixed disk investment casting is irregular, with a through hole with
At present, automobiles are fully used in national life, and the stability of automotive components is receiving increasing attention. The
Investment casting process can produce complex shapes, high surface finishGood, high dimensional and shape accuracy castings are widely used in
The gravity top-pouring casting process is selected. Due to the complex internal structure of the turbine guide casting, hot spots
As shown in the figure, the finished product of the investment casting of the turbine guide poured by this gating
As shown in the figure, the solid fraction and shrinkage porosity distribution of the gating system, where the shrinkage porosity
The premature solidification at the intersection of the inner runner and the investment casting of the turbine guide in the
The solidification process of the investment casting of the turbine guide is shown in Figure (a). The melt begins to
According to the structure and size requirements of turbine guide and the characteristics of K438 alloy, vacuum investment casting is
The investment casting material K438 of turbine guide is a nickel-base superalloy widely used in aerospace and has excellent high-temperature
In the past 20 years, China has vigorously developed advanced aerospace manufacturing technology, and the design structure of parts is
1. Process Status Grid fin surface structure for CZ-2D and CZ-4B carrier rocketsAs shown in Figure 1, the rudder surface
The investment casting process is used to produce 100 rod-shaped titanium alloy castings in batches. The cast titanium alloy castings
The wax mold is made with medium-temperature wax, the gating system scheme is the optimized investment casting process scheme for
Through the simulation analysis of two investment casting process schemes, it is determined that the theoretical scheme of proportional solidification
Figure 1 shows the mold filling and solidification of the investment casting process plan. It can be seen from Figure
Figure 1 shows the mold filling and solidification of the investment casting process plan. From Figure 1, it can be
1 Advantages and limitations of the investment casting process 1.1 Pros 1) The dimensional accuracy of investment castings is high
The density of titanium alloy is small, and the static head of feeding in the mold during vacuum casting is
Titanium alloy has low density, high strength and good corrosion resistance, and is widely used in aerospace, naval and other
With the upgrading and continuous development of aerospace military equipment, civil aviation and commercial aerospace products, higher requirements are put
Metal Injection Molding (MIM) is a new powder metallurgy forming technology developed on the basis of plastic injection molding. It
Semisolid forming (SF) was proposed and founded by Professor Flemings of Massachusetts Institute of Technology and his scientific research team
Additive manufacturing technology has become one of the key supports to improve the technical level in the aerospace field. At
In recent years, a lot of new processes and technologies have emerged, which have formed a strong competition for investment
At present, the investment casting process of magnesium alloy in China mainly adopts dry sand molding process and gypsum molding
As a metal structural material, the density of magnesium alloy is only 1.74g/cm3, about 2/3 of aluminum and 2/5 of
Aluminum alloy investment castings have been widely used in aerospace engines, airframe structures and airborne equipment. The mechanical properties can
