Analysis and optimization of casting defects in trial production of railway steel castings
The basic technological process of trial production of railway steel castings is introduced, the final technological scheme (serving the mass […]
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casting defects
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NDT and casting defects of typical four branch cast steel joints
The test piece shall be cut in the area where the casting defects are concentrated as far as possible in
Scientific
Description of casting defects of cast steel joints
The description and general impression of casting defects of various cast steel joints are as follows: (1) The four cast
Scientific
Simulation of shrinkage porosity and shrinkage cavity defects in bowl lined steel castings
Bowl lining steel castings are the products produced by the machinery factory of Shougang Mining Company. The material is wear-resistant
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Judgment of shrinkage porosity and shrinkage cavity defects of castings
The practical and reliable criterion of shrinkage porosity and shrinkage cavity defect is the most key content for the accurate
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Prediction and data simulation of shrinkage cavity and porosity defects in steel and iron castings
More advanced methods are adopted to accurately predict the shrinkage cavity and porosity defects in the solidification process of steel
Scientific
Characteristics of casting defects in cast steel joint samples
Some typical samples were selected to analyze the distribution characteristics of casting defects. (1) ZG-03 is a multi pipe intersection
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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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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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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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Casting defects of coupler tongue in trial production of railway steel castings
The casting defects of coupler tongue include crack, sand inclusion, mechanical sand sticking and other defects. In the actual trial
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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
Scientific
NDT for casting defects of cast steel joints
According to the summary, a total of 50 casting defects were found in 24 cast steel joints, and the average
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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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Casting defects of coupler body in trial production of railway steel castings
The main casting defects of coupler body include crack, air hole, sand inclusion and mechanical sand sticking. The main parts
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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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Description of casting defects of steel castings
In order to verify the feasibility and universality of the proposed process design improvement method, three typical steel castings produced
Scientific
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 sand casting defects of steel castings
Through the production verification of product k141 and the implementation of lack of vision countermeasures, it can be seen that
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Comparison of different standards on the grade of casting defects
The acceptance specifications of steel castings have realized that the outer surface of steel castings is more important, because the
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Reduce casting defects
Casting is a process for producing products with liquid metal. The basic technology in mechanical industry includes manufacturing, welding, forging
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Causes of shrinkage defects in castings
The basic cause of concentrated shrinkage defects in castings is that the liquid shrinkage and solidification shrinkage of the alloy
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Production defect prevention of railway steel castings
Firstly, the basic process flow of trial production of coupler products, the main process equipment and process methods used by
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Influence of different China standards on defect grade of steel castings
In terms of detection methods, GB7233-09 focuses on the near-field area of ultrasonic flaw detection, and adds a near-field resolution
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Hot cracks defects caused by the structure of steel castings
The cracks of the motor shell are typical thermal cracks. There are more than 40 cracks and more than 80
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Sand casting crack defect
The total number of cracks in the motor shell produced by furan resin sand casting process is about 70, while