Selection principle of internal fork type pneumatic actuator for ball valve
The influencing factors of ball valve torque mainly include pressure, temperature, medium type, property and quantity of suspended substance in […]
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Type of built-in fork type pneumatic actuator for ball valve
The built-in fork type pneumatic actuator (Fig. 1) replaces the gear rack of the traditional rack pneumatic actuator with the
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Types of external fork type pneumatic actuator for ball valve
The external fork type pneumatic actuator is also divided into double acting type and single acting type, which is composed
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Study on size error transfer from wax pattern to casting
The best wax dipping process was adopted, and the sample after wax dipping was used as wax pattern. The ceramic
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Types of rack and pinion pneumatic actuators for ball valves
Rack and pinion actuator is the most commonly used pneumatic actuator. The middle of the cylinder is connected with the
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Dynamic torque characteristics of ball valve during opening and closing
The structure and operation characteristics of the ball valve determine that the opening torque of the ball valve is unbalanced,
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Dimensional error from prototype to wax pattern in SLS rapid investment casting
The wax impregnation process plays an important role in improving the strength and surface quality of the specimen. According to
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Vibration mould of centrifugal casting machine
According to the structural characteristics of the feeding rotor of the centrifugal casting machine, the transfer matrix method is used
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Calculation model of mold support damping for centrifugal casting machine
The normal damping between single ball and raceway is as follows: Where α is the half width of the Hertz
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Calculation model of mold support stiffness for centrifugal casting machine
The load of self-aligning ball bearing is shared equally by two rows of rolling elements. Then for each row of
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Application of rotor dynamics in alloy centrifugal casting
The first paper about rotor dynamics in history is on centrifugal force of rotating shaft published by Rankine in 1869.
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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
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Solidification of hot spot of ductile iron nuclear spent fuel container under different casting conditions
Figure 1 shows the solidification process of the hot spot of nodular iron nuclear spent fuel container under the conditions
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Solidification characteristics of nodular cast iron at hot spot of nuclear spent fuel container
According to the simulation results and the experimental study of 45 ° test block, the ductile iron spent fuel container
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Relationship between graphite morphology and properties of nodular cast iron sector test block for nuclear spent fuel container
The relationship between the number of graphite balls and the properties of 45 ° sector block is shown in Figure
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Differential equation of motion for vibration performance system of centrifugal casting mold
The rotor and foundation of centrifugal casting were analyzed separately, and the differential equations of motion were obtained. The rotor
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Microstructure of nodular cast iron sector test block for nuclear spent fuel container
Metallographic examination shall be carried out in accordance with GB / t9411. The graphite morphology and matrix structure at different
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Nodular cast iron sector test block for nuclear spent fuel container
The central section of the 45 ° fan-shaped test block (as shown in Fig. 4-15) is selected for the sampling
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Solidification curve of nodular cast iron sector test block for spent nuclear fuel vessel
The temperature measurement curves of different positions of 45 ° sector test block are shown in Fig. 1. The cooling
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Simulation of solidification time distribution of ductile iron nuclear spent fuel container
The simulated solidification time distribution of ductile iron spent fuel container is shown in the figure. As can be seen
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Cooling characteristics of chill and metal mold for nodular cast iron sector test block of spent nuclear fuel vessel
The temperature curves of chill and metal mold are shown in Fig. 1 and Fig. 2 respectively. In about 18
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Production process and quality control of nodular cast iron sector test block for spent nuclear fuel vessel
Using high-purity pig iron as the main raw material, the high-temperature pure and high-quality molten iron meeting the composition requirements
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Numerical simulation of mold filling process in die casting of steering wheel
1.Analysis of temperature field in filling process The actual production requires that the minimum temperature distribution is at the overflow
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Numerical simulation results and analysis of steering wheel die casting
Figure 1 is the flow field simulation diagram of automobile steering wheel formed by opposite side casting. It can be
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Die casting model and casting system of steering wheel
Establishment of casting model A356 aluminum alloy is selected as the die casting material. The casting aluminum alloy A356 is
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Mathematical model for numerical simulation of mold filling process in aluminum alloy die casting
The metal in the filling process can be considered as incompressible fluid, which follows the hydrodynamics law and can be
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Establishment of mold vibration model for centrifugal casting machine
As shown in Figure 1, due to the symmetrical arrangement of rollers, the weight of the mold is shared equally
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Analysis of defect formation in counter gravity casting of large thin wall aluminum alloy plate
For the shrinkage porosity defect, it is opened at the defect position, as shown in the figure. It is found
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Relationship between wall thickness and chill thickness of counter gravity casting for large thin wall aluminum alloy plate
When the pressure difference is enough (35kpa), the influence of chill thickness and casting thickness on defect formation is discussed.
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Calculation of chill thickness of ductile iron vessel for spent nuclear fuel
The thickness of chill is designed according to the chill of gray iron casting, as shown in the formula Where