Sand mold casting process design of large turbine volute
The spiral case is made of QT500-7, and its chemical composition is shown in the table. The production nature of […]
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
The accuracy of the back calculation program needs to be verified. We select the difference between the measured temperature data
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
As shown in the figure, the porosity results of numerical simulation of nodular cast iron are mainly used to judge
Because the nodular cast iron of the hub support is the main body of the simulation, and its grid quality
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
(1) Raw materials The main ingredients for preparing molten iron in the experiment are Q10 pig iron, scrap steel, spheroidizing
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
1. EPS foaming white mold EPS (polystyrene foam) has good mold filling performance, good surface quality, small investment in pre
According to the forming and manufacturing process of output shaft shell, different casting enterprises adopt different molding lost foam process
According to different discrete methods, the solution methods of numerical model in lost foam casting solidification process mainly include finite
1.The concentration of carburized layer is too high Characteristics of heat treatment defects: There are massive carbides or network carbides
The figure shows the results of shrinkage porosity after solidification of sand casting frame, and the criterion of casting shrinkage
1. Processing route The machining routes corresponding to different forms of raw materials are different. At present, the forms of
The figure shows the solidification fraction of the sand casting frame at different times. It can be seen that the
Aiming at the common defects in the process of aluminum alloy lost foam casting, the following measures have been widely
1. Grid division and process parameter setting The three-dimensional modeling software (ugnx6. O) is used to accurately model the liner
The size of ball mill liner in lost foam casting should consider the factors such as convenient handling, loading and
The lost foam casting thin-walled gray cast iron gearbox shell casting with the improved gating system is adopted. The qualification
Flywheel is a part of engine components. Its product surface is fully processed. The dynamic balance test of parts. Although
Under the same production conditions, the process yield and scrap rate of three different casting process schemes were obtained. Scheme
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