Characteristics and remedy of slag inclusion in flux of sand casting
Defect characteristics and detection methods The dregs are dark brown and irregular in shape near the inner gate and the […]
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Characteristics, causes and prevention of casting white edge defects
Features: The white cast is hard and brittle, and it is difficult to break and turn white Causes: A. Casting
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Casting shrinkage defects in engine cylinder block and cylinder head
The structure of cylinder block (cylinder head) casting is complex, and the wall thickness is quite different. The thick and
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Features, causes and prevention of casting connection defects
Features: After removing the riser, there is less meat in the neck of the riser. Causes: The shape and size
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Shrinkage and porosity defects of ductile iron casting and their prevention
The shrinkage porosity and porosity are more common in ductile iron than in ordinary gray iron. To prevent them, more
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Defects in the material properties of the engine cylinder block and cylinder head
Throughout the development trend of engine technology at home and abroad, we are pursuing to reduce the wall thickness of
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Characteristics, causes and prevention of casting porosity
Features: Invasive pore: the pore size is generally large, in the shape of round, ball or pear; the pear shaped
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Characteristics of die casting process
Die casting is a kind of metal mould pressure casting on die casting machine, which is the most efficient casting
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Internal casting defects of die casting (part 2)
6 Non metallic hard point (1) Features and inspection methods: In the process of machining or after machining, the appearance
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Defect characteristics and remedy of honeycomb in sand casting
Defect characteristics and detection methods A wormhole or loose hole appearing in the thick part of a casting or in
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The bad spheroidizing defect of ductile iron casting and its prevention
The bad spheroidization means that the spheroidization does not achieve the expected effect. The metallographic structure of poor spheroidization is:
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Characteristics, causes and prevention of shrinkage cavity and porosity in casting
Features: Shrinkage cavity: the hole with large volume, rough wall surface and irregular shape in the casting Shrinkage porosity: a
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Other defects of steel casting and preventive measures
1.Deformation Long and plate castings are easy to deform. After some castings are processed, they will deform after a period
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Characteristics of metal mold casting process
Metal mold casting is a modern technology of making hollow mold with heat-resistant alloy steel. The metal mold can be
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Internal casting defects of die casting (part 1)
1 Casting porosity (1) Features and inspection methods: After dissection, appearance inspection or flaw detection showed that the pores had
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Metallurgical quality and technological measures to prevent subcutaneous porosity of nodular cast iron
① Desulfurization treatment. The so-called desulfurization is to transfer the sulfur in the molten iron to the slag as much
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Characteristics of sand casting process
Sand casting is a kind of traditional casting technology which takes sand as the main molding material to make the
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Improvement measures for cracks in aluminum alloy wheel of low pressure casting
1) Reasonable design of liquid lifting system Because the holding time is too long, or the liquid in the lifting
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Defect characteristics and remedy of oxidation spot in sand casting
Defect characteristics and detection methods Fine wrinkles on the surface of casting or dark gray flakes peeling off from the
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Characteristics, causes and prevention of casting sand hole and sand squeeze defects
Features: A cavity or apparent lack of flesh containing sand particles on or within the surface of a casting Causes:
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Shrinkage and porosity defects in steel casting and preventive measures
In the thick section of the casting, at the hot spot or the axis where the final solidification takes place,
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Characteristics and remedy of burning black defect in sand casting
Defect characteristics and detection methods There are gray white powder like spots or scabs on the thick parts of the
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Defect characteristics, causes and prevention of casting draft
Features: During the molding operation, there is sand sticking on the formwork, and the mold cavity has such phenomena as
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Blowhole defects and preventive measures in steel casting
Inside, on or near the surface of the casting, there are smooth holes of different sizes, round, long and irregular
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Common casting defects and preventive measures
1.Porosity Casting defect characteristics Inside, on or near the surface of the casting, there are smooth holes with different sizes,
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Identification of casting defects and unfilled defects in sand casting
1) Identification of casting defects in sand casting Casting failure refers to the defect on the casting, incomplete outline shape,
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Features, causes and prevention of insufficient casting defect
1, Characteristics There are defects in some parts of the casting, which often appear in the thin-walled part, the farthest
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Mechanism and prevention of surface carburization of EPC steel castings
1. EPC is suitable for the production of steel castings. Some measures can be taken to produce low carbon steel
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Characteristics and remedy of sand hole defects in sand casting
Defect characteristics and detection methods It is an open hole or a dark hole embedded with molding materials on the
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Sand hole defects in steel casting and preventive measures
Various casting defects often occur in the production of steel castings. How to prevent these defects has always been the