公开(公告)号：US20080021133A1

公开(公告)日：2008-01-24

申请号：US11837580

申请日：2007-08-13

申请人： Hiroshi Furusawa ,  Masanori Totsuka ,  Naohisa Shibata

发明人： Hiroshi Furusawa ,  Masanori Totsuka ,  Naohisa Shibata

IPC分类号： B22C1/22

CPC分类号： B22C1/2253 ,  Y10T428/25 ,  Y10T428/259 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2996 ,  Y10T428/2998

摘要： To provide resin-coated sand for a multilayer mold in which the consolidation strength of the casting mold obtained by using it and gas permeability thereof are improved at the same time, the amount of occurrence of pyrolytic products (tar, soot and the like) derived from organic substances is effectively inhibited, when molding is performed using such a casting mold, and further, the casting mold after molding can exhibit excellent collapsibility. Disclosed is resin-coated sand for a multilayer mold, in which surfaces of refractory particles are coated with a binder composition containing a phenolic novolak resin having an ortho/para bond ratio of methylene groups of 1.5 or more and an aromatic amine as indispensable constituents, and the grain fineness number is from 80 to 150.

摘要翻译： 为了提供用于多层模具的树脂涂层砂，其中通过使用其获得的铸模的固化强度和其透气性同时提高，热解产物（焦油，烟灰等）的出现量得到 当使用这种铸模进行成型时，有机物质被有效地抑制，此外，成型后的铸模可以表现出优异的折叠性。 公开了一种用于多层模具的树脂涂覆砂，其中耐火颗粒的表面涂覆有含有具有1.5或更大的亚甲基的邻位/对位比的酚醛清漆树脂和芳族胺作为不可缺少的成分的粘合剂组合物， 颗粒细度为80〜150。

公开(公告)号：US07919179B2

公开(公告)日：2011-04-05

申请号：US11837580

申请日：2007-08-13

申请人： Hiroshi Furusawa ,  Masanori Totsuka ,  Naohisa Shibata

发明人： Hiroshi Furusawa ,  Masanori Totsuka ,  Naohisa Shibata

IPC分类号： B32B29/00

CPC分类号： B22C1/2253 ,  Y10T428/25 ,  Y10T428/259 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2996 ,  Y10T428/2998

摘要： To provide resin-coated sand for a multilayer mold in which the consolidation strength of the casting mold obtained by using it and gas permeability thereof are improved at the same time, the amount of occurrence of pyrolytic products (tar, soot and the like) derived from organic substances is effectively inhibited, when molding is performed using such a casting mold, and further, the casting mold after molding can exhibit excellent collapsibility. Disclosed is resin-coated sand for a multilayer mold, in which surfaces of refractory particles are coated with a binder composition containing a phenolic novolak resin having an ortho/para bond ratio of methylene groups of 1.5 or more and an aromatic amine as indispensable constituents, and the grain fineness number is from 80 to 150.

摘要翻译： 为了提供用于多层模具的树脂涂层砂，其中通过使用其获得的铸模的固化强度和其透气性同时提高，热解产物（焦油，烟灰等）的出现量得到 当使用这种铸模进行成型时，有机物质被有效地抑制，此外，成型后的铸模可以表现出优异的折叠性。 公开了一种用于多层模具的树脂涂覆砂，其中耐火颗粒的表面涂覆有含有具有1.5或更大的亚甲基的邻位/对位比的酚醛清漆树脂和芳族胺作为不可缺少的成分的粘合剂组合物， 颗粒细度为80〜150。