Hot crack casting defects of gray iron body parts
In order to facilitate statistics, the location of crack casting defects is numbered and marked according to figure 1. Table […]
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casting defects
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Hot crack casting defects of gray iron casting body parts
Crack is one of the most dangerous casting defects of engine gray cast iron. Undetected cracks will expand and extend
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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 and analysis of casting defects
Niyama criterion is selected as the prediction method of shrinkage porosity of spiral bevel gear casting. As shown in figures
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Prediction and analysis of casting defects of sand casting gear
The figure is the schematic diagram of shrinkage defects and air pressure distribution at different positions after complete solidification of
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Introduction to Casting Defects
1.Casting Porosity Casting porosity is a common defect that can occur during the casting process in manufacturing. It refers 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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Casting defects of shrinkage porosity and shrinkage cavity in nodular cast iron
Shrinkage cavity and porosity are shrinkage casting defects produced in the solidification process of nodular cast iron. The solidification characteristics
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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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Improvement on fracture defect of guide wheel of sand casting excavator
(1) Improvement scheme of sand casting process improvement measures for defects such as sand holes and pores are as follows.
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Metallographic structure and SEM observation of surface defects of AlMg10 alloy casting parts
Metallographic structure and scanning electron microscope observation of the alloy select the parts with serious corrosion and take samples along
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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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Excavator guide wheel of sand casting defects
With the continuous development of mechanization and integrated construction in China, the scale of construction machinery industry is expanding year
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Determination of pouring position in sand casting
The pouring position of sand mold casting is the position of the casting in the mold during pouring. It directly
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Defects in sand casting process of rear axle housing
The sand casting process adopts two box molding and furan resin sand molding and core making. The diameter of the
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Prediction of defects in cold lap casting
The defect of cold lap casting is due to the fact that the unit solid rate at the flow front
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Prediction of casting defects with inclusions
According to the state and velocity of the flowing high-temperature metal liquid after colliding with each other in the mold
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Causes and preventive measures of sand sticking casting defects of cast steel bucket teeth
Compared with cast iron, the pouring temperature of cast steel is higher, which is more than 1560 ~ 1620 ℃
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Types of sand sticking casting defects of cast steel bucket teeth
At present, the manufacturing processes of bucket teeth of excavators in China are sand casting, forging and precision casting. In
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Common casting defects of steel castings
Although the casting defects produced in the casting process of steel castings are similar to those produced by ingot casting,
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Shrinkage cavity shrinkage porosity casting defect volume
After mold filling, the volume VL ‘of molten metal in the casting is equal to the cavity volume VL minus
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Lost foam casting defects
Wrinkle casting defect Wrinkle defect is due to polystyrene foam in high temperature metal pyrolysis to form a large amount
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Formation mechanism of shrinkage cavity and porosity casting defects
Shrinkage cavity and shrinkage porosity casting defects are common defects in casting production. They are holes formed due to the
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Factors affecting casting defect volume of shrinkage cavity and porosity
The tendency of shrinkage cavity and porosity casting defects is related to the solidification mode. During layer by layer solidification