Calculation example of shrinkage porosity and shrinkage cavity defects in nodular iron castings
For the simulation of nodular iron castings, the following simulation test is carried out by taking the actual nodular iron […]
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casting shrinkage
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Prediction of shrinkage porosity defects in nodular iron castings
The formation of shrinkage porosity is due to the wide crystallization temperature range of the alloy, which tends to paste
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Shrinkage cavity and porosity defects of steel casting and iron casting
The foundry industry has a civilization history of more than 6000 years in China, and now it is facing the
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Simulation of shrinkage cavity formation in plate casting with central riser
This flat casting was used in the riser verification experiment of secondary shrinkage formation carried out by Saburo Lintian in
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Prediction of shrinkage porosity and shrinkage cavity defects in sand castings
1.Principle introduction During metal solidification, the volume shrinkage and solidification shrinkage between liquid and solid phase lines are the main
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Determination method of isolated hot spot and prediction algorithm of shrinkage cavity and porosity defects in sand castings
Shrinkage cavity and porosity defects are common defects in casting production. One of the purposes of numerical simulation of casting
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Prediction of shrinkage porosity and cavity defects in castings
After years of development, the prediction criterion of shrinkage porosity and shrinkage defects of steel castings has reached a high
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Prediction of shrinkage porosity and cavity defects in numerical simulation solidification process
Shrinkage cavity and porosity defect is one of the most common defects in the casting process. The prediction of the
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Avoid shrinkage cavity and porosity defects of steel castings
Many parts of construction machinery such as bulldozers and excavators are cast steel castings, which often have shrinkage defects. Light
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Shrinkage cavity and porosity defect of steel castings
The defects of shrinkage cavity and porosity are briefly introduced. Combined with the theories of filling capacity of liquid metal,
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Control of shrinkage cavity and porosity defects of steel castings
Different steel casting production processes determine different production processes, but they can be basically divided into process design, model making,
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Analysis of casting defects of steel castings
The steel castings were trial produced in two batches, and the first time was qualified, and the second time there
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Shrinkage defects of castings of different materials
The shrinkage rates of several common iron carbon alloys are shown in the table. It can be seen from the
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Improvement of shrinkage cavity and porosity defects of steel castings
The traditional process tooling design is carried out for the bracket steel castings of a certain construction machinery. According to
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Eliminating shrinkage cavity and porosity defects of steel castings
The traditional steel casting process design is analyzed through examples, and the shortcomings of the traditional process design are analyzed
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Prediction of shrinkage cavity and porosity defects in steel castings
The shrinkage rate prediction module is used to predict the distribution of shrinkage defects. When the simulation results show that
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Casting defects of multi branch cast steel joints
Distribution law of casting defects of multi branch cast steel joints: (1) Cracks mainly appear in the R zone of
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Characteristics of porosity and shrinkage defects in medium and large steel castings
Fig. 1 the visual characteristics of air hole defects on the upper surface of steel casting hub are round, the
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Prediction of shrinkage cavity and porosity defects of beam of large steel casting rotary crusher
Shrinkage cavity and porosity are two common casting defects in large steel castings. They are mainly distributed in the last
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Prediction of shrinkage casting defects with multiple hot spots
The judgment of multiple hot spots is to judge the number, size and position of hot spots that may be
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Prediction of shrinkage cavity and porosity casting defects during solidification of steel castings
In the production of steel castings, the most common casting defects are shrinkage cavity and porosity. The main purpose of
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Criterion for judging shrinkage casting defects
The shrinkage porosity produced in the solidification process of castings is mainly predicted by using the shrinkage porosity criterion. There
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Calculation of shrinkage and prediction of shrinkage casting defects
To calculate the shrinkage of an isolated hot spot, first determine the isolated region, and then use the formula to
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Prediction criterion of shrinkage cavity casting defects
The prediction criteria of shrinkage porosity and shrinkage cavity of iron castings have been studied and developed for many years,
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Judging shrinkage casting defects by feeding unit
The prediction of shrinkage casting defects is based on the simulation of temperature field, and then the shrinkage of sand
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Determination of shrinkage casting defects by calculation of shrinkage
To calculate the shrinkage of an isolated hot spot, first determine the isolated region, and then use the formula to
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Determination of shrinkage casting defects with multiple hot spots
The judgment of multiple hot spots is to judge the number, size and position of hot spots that may be
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Prediction of shrinkage cavity and porosity casting defects during solidification of steel castings
In the casting production of steel castings, the most common defect is shrinkage cavity and porosity casting defect, and the
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Ways to eliminate shrinkage casting defects
（1） Realize sequential solidification “Sequential solidification” is the basic process principle to prevent shrinkage cavity and porosity of castings. The
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Prediction of shrinkage porosity and cavity casting defects by critical solid rate method
Shrinkage cavity and porosity casting defect is a hole that occurs when the temperature of molten metal decreases during solidification