Experimental Study on Core Material for Complex Sand Cores in Automated Manufacturing
According to the issues of deformation,breakage,and rapid mold wear in automated core making and assembling processes for complex sand cores such as cylinder heads,this study experimentally investigated the effects of sintered spherical ceramic sand,composite additives,and novel catalysts on the quality of sand cores and castings.Solutions to ensure the quality and production continuity of sand cores under automated production conditions were proposed.It was concluded that:(1)Selecting sintered spherical ceramic sand to improve the tendency of resin sticking in cold box cores and reduced surface defects of water jacket sand cores,addressing the problem of peeling after immersion in water-based coatings.(2)Using composite anti-veining additives had better anti-veining effects compared to single-component anti-veining additives.(3)Novel catalysts could effectively increase the initial tensile strength of sand cores,addressing issues of deformation and breakage caused by low initial strength of sand cores.(4)Under the conditions of automatic core making and assembling production using amine-catalyzed cold box cores,appropriate core materials and composition formulations were essential to ensure core quality.
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维普
