Research status of sustainable development of sand casting process
As people pay more and more attention to industrial pollution, environmental laws and regulations in many countries are becoming more […]
As people pay more and more attention to industrial pollution, environmental laws and regulations in many countries are becoming more […]
The solidification process of sand castings is directly related to the shrinkage cavity, porosity and stress concentration of sand castings.
1. Sand core design of sand mold casting The core is made of furan resin self hardening sand. Because the
The spiral case is made of QT500-7, and its chemical composition is shown in the table. The production nature of
After the simulation calculation is completed, enter the visual viewer post-processing interface, observe the dynamic change of liquid metal temperature
Compared with other metal castings, sand casting has the advantages of low cost, simple production process and short production cycle.
1. Simulation analysis of liquid metal filling process The filling state and temperature distribution at different stages of liquid metal
The process of rapid sand casting technology to realize the rapid manufacturing of parts is as follows: establish the three-dimensional
According to the above anti gravity test results, the differential pressure sand casting process was selected to pour the actual
The wall thickness of the hatch sand casting is 2 mm, and the dimensional accuracy requirements are high. It is
The hatch sand castings are sand castings with overall wall thickness of 2 mm. There is no report on the
The hatch sand casting is a key structural member of aluminum alloy for aircraft. The outline dimension of fad hatch
1. Sand mold casting process scheme of nodular cast iron Nodular cast iron sand castings are produced in single piece
The gross weight of the frame used in the simulation is 60t, the weight of the pouring riser is 30t,
The figure shows the results of shrinkage porosity after solidification of sand casting frame, and the criterion of casting shrinkage
In the numerical simulation of solidification process of sand castings, the thermophysical parameters of the mold are one of the
The figure shows the solidification fraction of the sand casting frame at different times. It can be seen that the
During the solidification and cooling process of sand castings, the shrinkage capacity of each part is different due to the
Numerical algorithm is the mathematical basis of numerical simulation of sand casting process. There are three common numerical calculation methods:
1. Production of heat subsidy for sand casting Mix the powdered heating material and binder evenly according to the required
The reasonable design of the exhaust system of sand mold casting sand core should comprehensively consider the exhaust hole and
The design of exhaust system of sand mold cavity can be divided into three parts: pouring riser, air outlet, air
Through the analysis of the physical parameters of the sand mold casting, it is determined that the quality of the
The material of the bearing seat is ZG310-570, and the production nature is mass production. 1. Sand casting process scheme
Large bearing pedestals are used in power plants, petrochemical, metallurgy, shipbuilding and equipment manufacturing industries, such as steam turbine rotor
The wet sand mold casting process of nodular iron crankshaft is mainly divided into two parts: sand mold preparation and
1. PLC software design PLC control software includes interface management program and monitoring program. The interface management program is connected
Shrinkage porosity and shrinkage cavity are the most common defects in the process of sand casting, and they are also
The three-dimensional models of casting, sand mold and cold iron are meshed by finite element method. After being imported into
Figure 1 shows the simulation results of filling sequence and velocity field of each part of mud pump body in