Optimization design of chill for sand casting axle housing
The cold iron is directly attached to the area where the riser is not suitable. Because of the chilling effect […]
The cold iron is directly attached to the area where the riser is not suitable. Because of the chilling effect […]
The ratio of the volume of the axle housing divided by the heat transfer surface area is called the solidification
As the key part of tractor, the main research contents are as follows: firstly, analyze the process of axle housing
Shrinkage cavity is a common casting defect, which is essentially a volume defect. According to the causes, it can be
Simulation and analysis of temperature field in closed gating system of axle housing The simulation of temperature field is shown
During pouring, under the action of gravity, the molten metal first enters the cavity through the sprue, enters the runner
Figures (a) and (b) show the flow of the liquid metal in the bridge shell when the metal liquid fills
A certain type of broken axle housing of a company is mainly used for tractor load-bearing bridge, with an annual
Figure (a) is the real-time screenshot of the molten metal just filling the runner at the beginning of pouring, and
In order to predict and confirm the location, size and range of shrinkage defects in the pouring and feeding system
Setting of sand mold material parameters When sodium silicate molding sand is used in production, it can be replaced by
During the solidification of hot metal, the liquid and solid state of most metals exist together most of the time.
Generally, the thermal conductivity of metal is related to the temperature and chemical composition of molten steel, which is generally
The numerical model of axle housing is established by Creo software and saved in. STP format. The STP file is
Using ProCAST through The computer numerical simulation software is used to simulate the gating system of the axle housing. The
Semi closed gating system is adopted, and the proportion is as follows: Σ a inside: ∑ a transverse: ∑ a
The open gating system is adopted, and the proportion is as follows: Within Σ A: ∑A transverse: ∑A straight =
The closed gating system is adopted, and the proportion is as follows: ΣA inside: ∑A transverse: ∑A straight = 1:1.3:1.5
The basic operation methods of numerical simulation include finite element method, finite difference method, boundary element method and direct difference
According to the location of the inner gate of the axle housing, the gating system can be divided into top
When there is not enough structural slope of the axle housing itself, enough draft angle of the axle housing should
As the original casting process adopts bottom pouring process, as shown in Figure 1 Through comparative analysis, it is found
The steel contains no other alloying elements except carbon and silicon and manganese alloy elements for deoxidation. This kind of
In order to further improve the efficiency of sand mold five axis linkage forming, in the above impeller sand mold
The experimental equipment is a digital five axis dieless casting precision forming machine developed by the General Institute of mechanical
Compared with the traditional casting, the precision forming technology of digital dieless casting, which uses the sand mold as the
At present, the forming technology of bucket teeth mainly includes sand casting, metal mold casting, lost foam casting and liquid
Process Inspection for cutting riser of sand blasting, surface cleaning, inspection for defects, repair of heat treatment, surface cleaning, inspection,
Assembly of sand mold Be familiar with the casting process drawings and related documents before assembly. Check whether the sand
Shape Preparation before modeling Check whether the pattern is complete, whether there is damage or deformation, whether the movable block