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公开(公告)号：EP1019210B1
公开(公告)日：2005-03-16
申请号：EP98949689.8
申请日：1998-09-29
申请人： Thixomat, Inc.
发明人： VINING, Ralph , DECKER, Raymond, F. , CARNAHAN, Robert, D. , WALUKAS, D., Matthew , KILBERT, Robert , VANSCHILT, Charles , NEWMAN, Rich
CPC分类号： B22D17/007 , B22C3/00 , B22D17/2015 , B22D17/2281 , Y10S164/90
摘要： An apparatus for processing feed stock into a thixotropic state. The apparatus includes a barrel with first, second and nozzle sections. The first, second and nozzle sections are connected together and include surfaces that cooperatively define a central passageway through the barrel. The first section is constructed of a first material, the second end section is constructed of a second material and the nozzle is constructed of a third material. The first material exhibits a greater resistance to thermal fatigue and thermal shock than the second material while the nozzle section includes a bushing which inhibits heat transfer to the die, precluding excessive molding pressures and cycle times. The apparatus also includes a preheater for preheating the feed stock before entry into the barrel, a thermal gradient monitoring system, a novel robust nozzle construction, and a two-stage embodiment of the apparatus.
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公开(公告)号：EP1019210A1
公开(公告)日：2000-07-19
申请号：EP98949689.8
申请日：1998-09-29
申请人： Thixomat, Inc.
发明人： VINING, Ralph , DECKER, Raymond, F. , CARNAHAN, Robert, D. , WALUKAS, D., Matthew , KILBERT, Robert , VANSCHILT, Charles , NEWMAN, Rich
CPC分类号： B22D17/007 , B22C3/00 , B22D17/2015 , B22D17/2281 , Y10S164/90
摘要： An apparatus for processing feed stock into a thixotropic state. The apparatus includes a barrel with first, second and nozzle sections. The first, second and nozzle sections are connected together and include surfaces that cooperatively define a central passageway through the barrel. The first section is constructed of a first material, the second end section is constructed of a second material and the nozzle is constructed of a third material. The first material exhibits a greater resistance to thermal fatigue and thermal shock than the second material while the nozzle section includes a bushing which inhibits heat transfer to the die, precluding excessive molding pressures and cycle times. The apparatus also includes a preheater for preheating the feed stock before entry into the barrel, a thermal gradient monitoring system, a novel robust nozzle construction, and a two-stage embodiment of the apparatus.
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