Method for reducing stress cracks of wheel blanks

The invention discloses a method for reducing stress cracks of wheel blanks. The method comprises: step 1, reducing stress concentration of an aluminum alloy wheel and performing thermal-treatment shot peening on a back cavity of a blank; and step 2, reducing temperature difference in the cooling pr...

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Bibliographic Details
Main Authors GONG LINSONG, WANG DADONG
Format Patent
LanguageChinese
English
Published 25.05.2011
Subjects
CHEMISTRY
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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Summary:The invention discloses a method for reducing stress cracks of wheel blanks. The method comprises: step 1, reducing stress concentration of an aluminum alloy wheel and performing thermal-treatment shot peening on a back cavity of a blank; and step 2, reducing temperature difference in the cooling process, wherein the temperature of a wheel center of the blank before cooling is far above that of aspoke according to the temperature display of thermal-sensitive pictures, so the blank can crack at a stress concentration point after cooling contraction; and spraying water on the wheel center of the front of the wheel molded from a die, wherein the temperature of sprayed water is 30 to 40 DEG C; water-spraying time is 40 to 90 seconds; and the flow of the sprayed water is 150 to 250 liters/hour.
Bibliography:Application Number: CN20101165989