Design of decompression gating system for inner sprue in sand casting
As mentioned above, the open gating system is not conducive to slag retaining at the initial stage of pouring, and […]
Scientific
Scientific
Effect of shell preheating temperature on shrinkage cavity and porosity of castings
Parameter setting: when the pouring temperature is 1550 ℃ and the pouring speed is 30mm / s, the shell preheating
News
Determination of gate position of process gating system for box sand castings
According to the analysis of the simulation results of the original process scheme, the bottom pouring system of the original
Scientific
Statistical analysis of scrap of valve castings after improvement
After the above improvement measures are taken, the waste of valve castings and the statistics of defect types are shown
News
Improvement measures for main casting defects of waste valve castings
According to the causes of valve casting defects, we have taken improvement measures mainly from the following aspects: (1) Properly
Scientific
Cause analysis of main defects of valve casting scrap
(1) The guarantee ability of melting equipment to molten iron composition is poor and the stability of sand mixing equipment
Scientific
Statistics of valve casting scrap before process improvement
Valve castings are one of the leading products in castings, and the annual market demand is very large. However, due
Scientific
Prediction criterion of shrinkage cavity and porosity casting defects in investment casting
There are many reasons for casting defects. Gating system, pouring temperature and flow speed of molten liquid, casting size and
Scientific
Research and development of key process of c12a valve casting and determination of process parameters
Through repeated trial production and continuous research and development in recent years, ZHY casting has accumulated mature production experience, applied
News
Development of valve casting industry in China
In recent years, the domestic pump and valve casting industry has developed rapidly, but there are still many problems in
Scientific
Production of ZGCr5Mo high temperature and high pressure valve castings
ZHY casting produces 20 sets of 65j61y64i valves for a power plant. The medium of the valves is high-pressure steam
News
Study on key process of c12a valve casting
The crack defects can be greatly reduced and eliminated by improving the main key process methods in the manufacture of
Scientific
Key technical specifications for c12a valve castings
ASME sa-217 c12a material is a high alloy heat-resistant steel. It is a new material developed by the United States.
News
Casting technology in the production of China large steel castings
Large castings have long production cycle and complex processes. Generally, they have to go through many processes. Reasonable setting of
News
Application status of computer simulation in Lost Foam Casting
Lost foam casting numerical simulation technology has become a powerful simulation and simulation technology, and goes deep into all aspects
News
Research status of investment casting
As a material near net shape technology, investment casting has the characteristics of complex casting structure, high dimensional accuracy, wide
News
Simulation innovation of lost foam casting process
1) Because of the complex physical and chemical reaction between the front of the molten metal and the foam pattern
Scientific
Design of gating system based on critical velocity theory in sand casting
John Campbell of the University of Birmingham and others have carried out a lot of research work on the design
Scientific
Study on sand casting technology of automobile engine parts
Three kinds of Dieless manufacturing processes, including laser selective sintering of coated sand, laser selective sintering of PS powder and
News
Impeller casting shape and size
The shape and dimension inspection of impeller casting is to check whether the actual dimension of impeller blank casting falls
Scientific
Theoretical basis of mold filling and solidification process in investment casting
In the process of investment casting, solidification refers to the process that high-temperature liquid metal changes from liquid to solid
Scientific
Effect of pouring temperature on shrinkage cavity and porosity of castings
Parameter setting: when the pouring speed is 30mm / s and the shell preheating temperature is 600 ℃, the pouring
Scientific
Analysis of mold filling process, solidification process and casting defects in investment casting of bearing support
As shown in Figure 1: after the investment casting pouring starts, the liquid fills the main sprue in about t
Scientific
Simulation analysis of investment casting of bearing support
The mechanical parts of topology design must have good manufacturability before the products have practical value. The product of topological
Scientific
Theoretical basis of mold filling process in investment casting
In the process of investment casting, although the movement of metal pouring fluid is very complex, it will strictly follow
News
Metal material smelting technology in the production of large steel castings
Large steel castings in the fields of nuclear power, hydropower, thermal power and metallurgical equipment have strict service conditions and
News
Main contents of numerical simulation of lost foam casting
The change of field in each stage of lost foam casting forming process is calculated accurately, so as to obtain
News
Design of rapid investment casting
Rapid investment casting (RIC) is a production process of indirect additive manufacturing (I-am) metal parts formed by the combination of
News
Simulation of lost foam casting process
It mainly studies the lost foam casting of gearbox box, first carries out three-dimensional modeling, then carries out linear repair,
News
Casting technology of large complex impeller
In view of the current situation that the production quality of large and complex integral stainless steel casting impeller can