Taking the roller supported horizontal centrifugal casting machine as the research object, the dynamic performance of the centrifugal casting machine, […]
Before casting, preheat the mold to a certain temperature TMI, and the casting temperature of liquid metal is TP; when
As a special casting method, centrifugal casting has the following advantages compared with traditional sand casting: (1) Hollow cylindrical and
The mold and its internal area are discretized. The mold is divided into M1 grids in the radial direction, M2
Casting is an important basic process and technology in mechanical industry, which is widely used in various fields of mechanical
The solution domain is discretized into several nodes, and there is heat transfer between each node. The heat balance equation
Because of its low manufacturing cost and good comprehensive performance, steel castings are often used in the plug valve of
In the forced vibration analysis, it is assumed that there are eccentric masses distributed on the cast rotor, the eccentricity
(1) The hot spot is at the top of the container, and the hot spot solidifies at last and the
In the process of measurement, if the temperature of the reference end changes, even the temperature range is large, the
The natural frequencies in the range of 0-1000 rad / s are given. It can be seen that the natural
The upper limit of temperature measurement is as high as 1350 ° C. in the process of temperature measurement, the
Because the foundation is placed on the foundation, the comprehensive stiffness KF of the foundation and foundation can be regarded
The principle of thermocouple temperature measurement is thermoelectric effect. In the thermocouple loop, the high temperature end is called the
Figure 1 shows the structural diagram of the roller supported horizontal centrifugal casting machine including foundation and foundation. The casting
In order to verify the accuracy of the simulation results and prove that the simulation software can be used to
In practice, the geometric error between the supporting roller and the mold is often difficult to be expressed by a
The necking riser is used at the top of the spent fuel container, and the riser is designed according to
Considering the processing method of roller and mold, the surface roughness Ra is in the range of 1.6-25 μ m.
Raw materials: high purity pig iron (jbt11994-2014), 75 ferrosilicon; Spheroidizer: mgre6-l rare earth magnesium spheroidizer, particle size 4? ２５ｍｍ； Inoculant:
It is assumed that the geometric errors of the left roller, the right roller and the outer circle of the
75sife alloy is the most widely used inoculant at home and abroad. The composite inoculant composed of Ca, Ba, Sr
If the mold has eccentric mass at the roller support, the eccentricity is e = 0.03mm, and the phase angle
The transfer matrix method is also used to calculate the dynamic performance of the cast rotor. Firstly, the rotor is
The most commonly used spheroidizers in industry are magnesium, re and calcium. Magnesium has the strongest spheroidizing ability, but its
At any time t, the lower part of the mold contour always contacts with a point of the upper part
The matrix of qt400-18 is mainly ferrite. The chemical composition of qt400-18 is not specified in GB 1348-2013 ductile iron
The microscopic shape of an object’s surface is called surface topography. No matter what method is used to process the
Germany took the lead in the development of ductile iron nuclear spent fuel container, and the application field of ductile
In fact, due to the influence of processing accuracy and other factors, the profile of roller and mold will produce
