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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casting defects
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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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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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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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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, 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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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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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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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
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The major defects of common castings and their causes
1.Porosity Features There are smooth holes of different sizes on the inner or surface of the casting. Main causes ①
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Defects and remedial measures of stainless steel castings after heat treatment
For box type and trolley type resistance furnace plates, a high temperature tempering should be carried out before use, and
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Sand sticking defects in steel casting and preventive measures
On the surface of the casting, all or part of the surface is covered with a layer of metal (or
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The defect phenomenon and cause of the fast broken graphite in ductile iron casting
Fast graphite fragmentation The broken fast graphite is a kind of deformed graphite which often appears in the large end