Verification of lost foam casting process in small batch production
Using the process plan after the second optimization, the small batch production verification of steel and steel bearing was carried […]
Using the process plan after the second optimization, the small batch production verification of steel and steel bearing was carried […]
In order to study the impact resistance of steel castings at different temperatures, three temperature detection conditions, namely normal temperature,
It can be seen from Fig. 1 that when the pouring temperature changes from high to low, the safe height
The safety height of riser feeding is taken as the evaluation index in the orthogonal test. The measurement method of
According to the test results of high temperature wear resistance and high temperature oxidation resistance of the new superalloy used
Figure 1 shows the average grain size curve of Superalloy samples prepared at different pouring temperatures. It can be seen
Figure 1 is a plot of the mass gain per unit area of a high temperature alloy sample prepared at
Fig. 1 is the curve of mass added value per unit area of Superalloy samples prepared at different pouring temperatures.
1. Test materials The test material is superalloy K4002 Sr. When 0.4-0.6% SR is added to the alloy, the chemical
The superalloy can work at 760 ~ 1500 ℃ for a long time and bear certain stress. Because the superalloy
1.Simulation results and analysis of filling process The filling process of multi way valve casting is as shown in the
1.Casting system model of double hydraulic valve body The design method of the valve body gating system is similar to
ProCAST software uses finite element method to simulate heat transfer, filling flow process, thermal-stress coupling field, microstructure and shrinkage cavity.ProCAST
1.Partial differential equation for heat conduction: The solidification process of castings is a complicated phase transition process.Solidification is a dynamic
Based on one hydraulic valve body and two hydraulic multi way valve body, the design method of casting and pouring
The filling process of liquid metal is a non-isothermal flow process with heat loss and solidification.The metal fluid flow should
Based on the analysis of simulation results, the casting process needs to be optimized to eliminate the casting solidification defects.
Cylindrical billets are cut lengthwise on a 100 mm diameter billet and processed into equal-section samples with a working section
Machining centers are divided into horizontal and vertical machining centers according to the position relationship between the spindle and the
Foundry industry in various industrial countries has paid more attention to grain refinement of cast steel for more than 60
1. Homogeneous nucleation is not possible for actual production In order to realize homogeneous nucleation in homogeneous liquid phase, the
There may be two different mechanisms to refine the grains of casting alloy by adding refiners, and their effects on
1. Design of compensation system and air outlet Based on the analysis results, the top area of the casting finally
1. Filling Process Analysis The filling process simulation analysis of Figure 5 shows that the filling time of the casting
Gasket castings are produced by two pieces in one box. Considering the same distance from the casting system to each
As shown in the figure, the turbine housing parts are complex in structure and moderate in batch. They are molded
It is beneficial to obtain castings with clear contour, precise shape, smooth surface and intact internal structure by mastering the
With the transformation and upgrading of rolling equipment in China, the rolling mill is developing towards automation, continuity and heavy-duty,
The first piece appraisal meeting for the first stage stationary blade casting of 300MW class F heavy-duty gas turbine was
1 Preliminary test As the pores are non fissured, N2 pores are excluded. In order to reduce the source of