There are many research viewpoints about the formation mechanism of anti white mouth defect, such as element area segregation, inoculation decay, grain dissociation and high cooling rate of the final solidification position under specific conditions. These research views on the causes of anti white mouth defects have corresponding theoretical...
The simulation results of the temperature field of the initial horizontal centrifugal casting process castings are shown in Figure 1. It can be seen from the simulation results of the temperature field that during the solidification process of the centrifugal casting, the outer surface of the castings contacts the...
1. Calculation of centrifugal speed by empirical formula In the production practice of horizontal centrifugal casting, the centrifugal speed of casting casting is calculated according to Konstantinff’s empirical formula. The formula is as follows: In the formula, n is the rotational speed of the mold (r/min), G is the...
The assembly drawing of casting and mold is shown in Figure 1. The maximum diameter of casting Φ 140mm, length 298mm, maximum wall thickness 19mm. The distribution diagram of casting blank and machining allowance is shown in Figure 2. The unilateral machining allowance of inner hole is 7-9mm, the...
The filling process of horizontal centrifugal casting is characterized by free surface, viscous, incompressible and unsteady flow. Therefore, the fluid motion state conforms to the continuity equation and momentum conservation equation. The continuity equation and Navier Stokes equation of filling process are as follows: (1) Continuity equation: (2) Navier...
As the core component of the engine, the cylinder liner has put forward higher requirements for various performances of the cylinder liner with the development of the engine technology in the direction of high speed, high power, high detonation pressure, low emissions, and high performance. In the working process...
The distribution of the solid-liquid phase of the initial centrifugal casting process at t=150s is shown in Figure 1. The liquid metal transfers heat to the surroundings through thermal radiation. The liquid metal near the mold and baffle solidifies first because of the rapid cooling. As the internal surface...
The simulation results of the initial centrifugal casting process temperature field are shown in Figure 1. It can be seen from the simulation results of the temperature field that during the solidification process of the centrifugal casting, the outer surface of the casting contacts the thermal insulation coating, and...
The assembly diagram of centrifugal casting parts and molds is shown in Figure 1. The maximum diameter of centrifugal casting parts is 40mm, the length is 298mm, and the maximum wall thickness is 19mm. The distribution diagram of the blank and machining allowance of the centrifugal casting is shown...
The filling process of horizontal centrifugal casting is characterized by free surface, viscous, incompressible and unsteady flow. Therefore, the fluid motion state conforms to the continuity equation and momentum conservation equation. The continuity equation and Navier Stokes equation of filling process are as follows: (1) Continuity equation: (2) Navier...