Comparison and optimization of casting process for ductile iron nuclear spent fuel container
In order to eliminate the adverse effect of hot spot, reduce the defects of ductile iron spent fuel container and […]
In order to eliminate the adverse effect of hot spot, reduce the defects of ductile iron spent fuel container and […]
Figure 1 shows the solidification process of the hot spot of nodular iron nuclear spent fuel container under the conditions
According to the simulation results and the experimental study of 45 ° test block, the ductile iron spent fuel container
The relationship between the number of graphite balls and the properties of 45 ° sector block is shown in Figure
The rotor and foundation of centrifugal casting were analyzed separately, and the differential equations of motion were obtained. The rotor
Metallographic examination shall be carried out in accordance with GB / t9411. The graphite morphology and matrix structure at different
The central section of the 45 ° fan-shaped test block (as shown in Fig. 4-15) is selected for the sampling
The temperature measurement curves of different positions of 45 ° sector test block are shown in Fig. 1. The cooling
The simulated solidification time distribution of ductile iron spent fuel container is shown in the figure. As can be seen
The temperature curves of chill and metal mold are shown in Fig. 1 and Fig. 2 respectively. In about 18
Using high-purity pig iron as the main raw material, the high-temperature pure and high-quality molten iron meeting the composition requirements
1.Analysis of temperature field in filling process The actual production requires that the minimum temperature distribution is at the overflow
Figure 1 is the flow field simulation diagram of automobile steering wheel formed by opposite side casting. It can be
Establishment of casting model A356 aluminum alloy is selected as the die casting material. The casting aluminum alloy A356 is
The metal in the filling process can be considered as incompressible fluid, which follows the hydrodynamics law and can be
As shown in Figure 1, due to the symmetrical arrangement of rollers, the weight of the mold is shared equally
For the shrinkage porosity defect, it is opened at the defect position, as shown in the figure. It is found
When the pressure difference is enough (35kpa), the influence of chill thickness and casting thickness on defect formation is discussed.
The thickness of chill is designed according to the chill of gray iron casting, as shown in the formula Where
The research adopts the flat plate structure, the gap gating system and the low pressure pouring. The design of plate
The results show that tempering temperature has obvious effect on the quantity and morphology of carbides in 30cr13nb0.1 steel, which
The effect of tempering temperature on the impact properties of 30cr13nb0.1 steel is shown in Fig. 1. It can be
It can be seen from the figure that with the increase of tempering temperature, the hardness of 30cr13nb0.1 steel first
The room temperature tensile strength and elongation of A1 and A2 alloys under different processes are shown in Fig. 1.
Fig. 1 shows the microstructure of 30cr13nb0.1 steel tempered at different temperatures. It is preliminarily judged that it is martensite
Fig. 1 and Fig. 2 are SEM photos of microstructure of as cast samples of A1 and A2 alloys by
Fig. 1 and Fig. 2 show the SEM photos of as cast samples of A1 and A2 alloys without ultrasonic
The ztap / HCCI composite grinding roller was successfully prepared by splicing several preforms and fixing them at the corresponding
Take photos of the worn sample surface, import the pictures into image Pro Plus software, and identify and select the
Figure 1 shows the XRD pattern of ztap / HCCI composite. The phases of the composites mainly include Al2O3 in