Continuous improvement of process design for ductile iron castings
The most effective way to solve the internal shrinkage casting defects of nodular iron castings is to use chill and […]
The most effective way to solve the internal shrinkage casting defects of nodular iron castings is to use chill and […]
The disc of ductile iron punch is an important part of high-speed punch. The main body of high-speed punch is
Resin sand is used for molding and core making. The compressive strength of resin sand is 5~7 kPa. Zircon powder
Because the cast impeller is a medium-sized casting, its structure is relatively simple, and it is mass production. Its parting
In the process of lost foam casting pouring, vacuum the sealed sand box to generate negative pressure in the mold,
The optimized casting process is shown in Figure 1. The production method of flat casting is adopted, the parting surface
When discussing the original process design of nodular iron castings, it is considered that there is a large hot spot
1.Casting process plan HWS line green sand molding process is adopted, and the size of sand box is 1000 mm
As shown in Figure 1, the change of critical solid rate in the solidification process of lost foam castings after
1. Assign professional personnel to control production quality For enterprises, in order to obtain economic benefits, their products are required
The mold filling ability of liquid metal in lost foam casting is the ability of liquid metal to fill the
Steel casting coating can be applied in various ways according to different site conditions and different steel castings. Through the
Internal shrinkage porosity and shrinkage cavity defects of nodular iron castings are common problems in the casting industry, and how
The chemical composition of molten iron is shown in Table 1. The double wire feeding spheroidization process with cover is
The shell of the water ring vacuum pump used by ZHY Casting is welded with steel plates and processed into
With the gradual increase of environmental protection, low energy consumption, low emissions and low pollution have become the goals of
The microstructure and characteristics of the bonding interface play a key role in the macro mechanical properties of the composite
As shown in the figure, the filling process diagram of lost foam casting after the improved process is shown. The
In view of the metallurgical quality requirements of high-quality steel castings, it is obviously incompatible to use the original smelting
Many advantages of lost foam casting technology come from the fact that it does not need to take the mold,
The performance indexes of zirconium free composite cast steel coating 405B (hereinafter referred to as tl405b) are shown in the
In China’s casting industry in recent years, the output of steel castings has increased year by year, reaching 5.9 million
The main reason why grey cast iron is widely used in cylinder block is that it has better thermal conductivity
It can be seen from the analysis that there is no liquid metal feeding at the center of the wheel
Tetrahedral mesh is still used in meshing. After meshing, the whole model package has 163266 nodes and 884220 elements. The
The numerical simulation technology of lost foam casting is a comprehensive and knowledge intensive technology which integrates partial differential equation,
Cast steel is the steel used to make cast iron. In the case of high casting production intensity and insufficient
Figure 1 shows the mechanical properties of gray cast iron materials with different carbon equivalents. It can be seen that
1. Process parameter setting C Si Mn P S 0.45~0.55 0.20~0.40 1.50~1.80 ≤0.030 ≤0.030 According to the national standard jb/t
In order to ensure the smooth operation of the overall process of cast steel production, while taking into account the