Analysis on the formation of casting pores in the valve body of super duplex stainless steel butterfly valve
(1) Cause analysis of formation of porosity in invasive casting. The total amount and rate of gas produced by molding […]
Scientific
casting porosity
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Prevention and treatment of casting porosity in sand coated iron mold cylinder block casting
1. Increase the section size of the internal sprue In order to reduce the large amount of gas generated by
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Control of ambient temperature and humidity for eliminating casting pores in stainless steel butterfly valve body
The curing rate of resin self hardening sand increases with the increase of ambient temperature (including raw sand temperature). When
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Casting porosity of super duplex stainless steel butterfly valve body
Super duplex stainless steel (00Cr25Ni7Mo4N, French brand SAF2507) is widely used in nuclear industry, such as valve body, main coolant
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Prevention method of porosity in cast iron
Cast iron castings often have various casting defects. How to prevent these defects has always been the concern of casting
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Analysis of common defects in castings
Casting porosity This is a small cavity formed by the gas which can not escape during the solidification of metal.
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Engine cylinder block and cylinder head produce casting porosity
Porosity is usually the most common defect in cylinder block castings, which often takes the first place in the scrap
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Prevention methods of shrinkage cavity and porosity in cast iron
Features: in the thick section of the casting, hot spot or axis and other places of the final solidification, rough
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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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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, 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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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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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,