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PROCESS FOR CASTING PARTS OF ALUMINIUM ALLOY USING A LOST FOAMY PATTERN AND A LOW PRESSURE CASTING PROCEDURE
PROCESS FOR CASTING PARTS OF ALUMINIUM ALLOY USING A LOST FOAMY PATTERN AND A LOW PRESSURE CASTING PROCEDURE
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机译:用消失模和低压铸造法铸造铝合金零件的工艺
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The invention relates to lost-foam casting of metal pieces, particularly from aluminium alloy. …??It relates to aluminium-alloy pieces having a wide solidification range (gap) and having a high ratio of length to modulus over the path between the point where the contraction cavity forms and the riser (feeder) and consists in applying a gaseous pressure to the mould of between 0.1 and 0.5 MPa. …??It permits the production, in particular, of motor-vehicle cylinder heads having no pinholes (pitting) or porous (spongy) contraction cavity, and of all pieces with high-performance mechanical properties. …IMAGE…
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