Dynamic calculation of rotor in centrifugal casting
The transfer matrix method is also used to calculate the dynamic performance of the cast rotor. Firstly, the rotor is […]
The transfer matrix method is also used to calculate the dynamic performance of the cast rotor. Firstly, the rotor is […]
At any time t, the lower part of the mold contour always contacts with a point of the upper part
The microscopic shape of an object’s surface is called surface topography. No matter what method is used to process the
In fact, due to the influence of processing accuracy and other factors, the profile of roller and mold will produce
Establish the coordinate system origin 0 as shown in Fig. 1, which coincides with the center of the left roller,
There are two types of excitation on the rotor of rotating machinery, one is the excitation force acting on the
In the theoretical calculation, the theoretical model is still consistent with the model described, but in the programming calculation, some
In order to verify the correctness of the theoretical model in this chapter, an experimental device for vibration measurement of
There is an eccentric mass on each section along the axis of the mold. The eccentric mass on the i-th
Through programming calculation, the first four critical speeds of centrifugal casting machine can be obtained. It can be seen that
Taking the horizontal roller supported centrifugal casting machine of an equipment manufacturing Co., Ltd. as an example, the vibration performance
The influencing factors of ball valve torque mainly include pressure, temperature, medium type, property and quantity of suspended substance in
The built-in fork type pneumatic actuator (Fig. 1) replaces the gear rack of the traditional rack pneumatic actuator with the
The external fork type pneumatic actuator is also divided into double acting type and single acting type, which is composed
The best wax dipping process was adopted, and the sample after wax dipping was used as wax pattern. The ceramic
Rack and pinion actuator is the most commonly used pneumatic actuator. The middle of the cylinder is connected with the
The structure and operation characteristics of the ball valve determine that the opening torque of the ball valve is unbalanced,
The wax impregnation process plays an important role in improving the strength and surface quality of the specimen. According to
According to the structural characteristics of the feeding rotor of the centrifugal casting machine, the transfer matrix method is used
The normal damping between single ball and raceway is as follows: Where α is the half width of the Hertz
The load of self-aligning ball bearing is shared equally by two rows of rolling elements. Then for each row of
The first paper about rotor dynamics in history is on centrifugal force of rotating shaft published by Rankine in 1869.
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