发明名称 |
THERMAL SHOCK RESISTANT APPARATUS FOR MOLDING THIXOTROPIC MATERIALS |
摘要 |
<p>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 defining 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.</p> |
申请公布号 |
EP1019210(A1) |
申请公布日期 |
2000.07.19 |
申请号 |
EP19980949689 |
申请日期 |
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 |
分类号 |
B22D1/00;B22C3/00;B22D17/00;B22D17/20;(IPC1-7):B22D17/00 |
主分类号 |
B22D1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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