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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casting defects
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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
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Main casting defects of nodular cast iron
1.Shrinkage cavity, shrinkage porosity and casting defects Due to the characteristics of paste solidification of nodular cast iron, the produced
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Control of molten steel quality to reduce sand hole and air hole defects of large steel castings
The market has higher and higher requirements for the quality of large and medium-sized steel castings. The castings requiring ultrasonic
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Defects of bucket teeth castings in chemical bonded sand casting
The molten metal interacts with the surface of the mold cavity at high temperature. After condensation, a layer of hard
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Control of water glass to reduce sand hole and air hole defects of large steel castings
1. Quality control of sodium silicate. “Modulus, concentration” and “guest salt” (NaCI, Na2SO4, Na2CO3, etc.) are important parameters of sodium
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Defects of bucket teeth castings caused by mechanical sand sticking
The liquid metal penetrates into the gap of molding sand, and after condensation, a layer of mechanical mixture of liquid
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Main casting defects of cast iron
Various cast iron codes are composed of the first capital letter of the Chinese pinyin letter representing the characteristics of
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Characteristics of incomplete forming defects of bucket teeth in Squeeze Casting
There are two main forms of incomplete forming of bucket teeth in Squeeze Casting: incomplete bucket teeth and incomplete forming
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Comparative analysis on the influence of different gating systems on the tractor box sand casting
Through the simulation analysis of mold filling and solidification process of different pouring schemes, the similarities and differences of mold
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Main factors for reducing sand hole and air hole defects of large steel castings and quality improvement scheme
1.How to control the pouring temperature? Since lowering the pouring temperature has so many advantages, how can we ensure smooth
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Casting defects of precipitation porosity in bucket teeth castings
The molten steel contains gas in the melting process, which requires pre deoxidation and final deoxidation. If the deoxidation is
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Prevention of sand sticking casting defects of excavator bucket teeth
(1) There should not be too much recycled sand in the core sand, because there are too many fine sand
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Porosity casting defects of bucket teeth
Porosity is one of the most common casting defects in castings. According to the different formation mechanism, it is mainly
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Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings
Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings Reducing the pouring “temperature” is
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Sand sticking casting defects of bucket teeth castings
There is a layer of sand particles on the surface of castings that are difficult to remove, which is called
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Invasive porosity casting defects of bucket teeth castings
Take the bucket tooth sleeve of loader as an example (as shown in Figure 1). The single blank mass of
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Increasing pouring speed and reducing sand hole and air hole defects of large steel castings
① Increase the diameter of ladle nozzle and the size of gating system; ② Increase the number of ladle nozzles;
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Prevention measures of sand sticking casting defects of excavator bucket teeth
Therefore, we analyze and sort out the causes of sand sticking in cast wear-resistant low alloy steel and the preventive