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After the casting has cooled it is broken out of the sand mold The process of removing sand from the castings is called shakeout The casting can be removed manually or by automated machinery Agitations tables and rotary tumblers are commonly used
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Sep 19 2017 · Posted September 19 2017 Sand casting or sand mold casting is a popular method of producing nonferrous alloy casts Invented over 6000 years ago this process has undergone a number of changes and modernizations over the years but the basic principals have remained the same
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Feb 01 2009 · The turbulence created by the opposing streams aggressively removes internal burrs burnedon sand and leftover mold or core materials from difficulttoreach passages and highly cored and deep components Nozzle and part movement are servocontrolled Carpenter explains that the system grew out of his foundry experience
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Ideal for removing sand from castings the Uras Vibro Shakeout Machine uses the Uras Vibrator as a source of vibration
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If the casting needs to have hollow sections or holes one or more sand cores are set in place usually in the drag fitted into grooves left by the pattern The cope and drag are married together and the metal is poured It cools sand is removed from the outside of the part and the cores are broken up and removed
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The shaking dislodges the sand which drops from the casting and sifts through holes in the table The sand usually falls into a box or onto a conveyor to be recaptured as molding sand Investment castings are made in a hard mold of ceramic sand This mold needs to be cracked open manually or removed with powerful water jets
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After the sand core has been sufficiently weakened by exposure to the humid atmosphere the sand is removed from the casting Sand may be removed by mechanical agitation as is
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The shotblasting process carried out by the shotblasting machine allows removing the layers of casting earth following the casting process The mass of earth that contains the castings is crushed and separated from the pieces by the impact of the shot and even the slightest slag on the pieces is
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