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1. 发明授权

KR100445223B1 진공정밀주조용 세라믹 코어의 조성물 失效
标题翻译： 진공정밀주조용세라믹코어어의조성물
公开(公告)号：KR100445223B1
公开(公告)日：2004-08-21
申请号：KR1020010048709
申请日：2001-08-13
申请人： 한국전력공사
发明人： 김재철 , 김의환 , 장중철 , 조창용 , 김인수 , 김두현 , 유영수 , 최백규 , 김재원
IPC分类号： C04B35/14 , C04B35/64
摘要： PURPOSE: A manufacturing method of ceramic cores used in vacuum precision casting of complicated shaped- or hollowed-products process is provided, which improves dimensional preciseness and product quality, and shortens the process by gel casting through radical polymerization in aqueous media. CONSTITUTION: The manufacturing method of ceramic cores for vacuum precision casting is as follows: preparing a ceramic mixture solution by dispersing high concentration ceramic mixture containing 73-77wt.% of fused silica, 18-22wt.% of zircon and 4-6wt.% of cordierite into solvent(ethyl alcohol) containing 3-4wt.% of monomer, 0.6-0.8wt.% of dimer and 0.4-0.6wt.% of polyelectrolyte dispersant such as alginic acid and polyacrylic acid; casting at 20-25deg.C for 1-3min to be hydrated gel compacts; releasing; drying and optionally adding 0.063-0.084wt.% of ethyl alcohol to prevent fatigue arising from dry shrinkage; thermal-hardening; sintering at 950-1050deg.C for 2-3hrs.
摘要翻译：目的：提供一种用于真空精密铸造复杂成形或中空产品工艺的陶瓷芯的制造方法，其提高了尺寸精度和产品质量，并且通过在水性介质中通过自由基聚合进行凝胶浇铸缩短了工艺。本发明公开了一种真空精密铸造用陶瓷芯的制造方法，通过分散含73-77wt。％熔融石英，18-22wt。％锆石和4-6wt。％高浓度陶瓷混合物的陶瓷混合溶液，堇青石加入到含有3-4重量％单体，0.6-0.8重量％二聚体和0.4-0.6重量％聚电解质分散剂如海藻酸和聚丙烯酸的溶剂（乙醇）中; 在20-25℃下浇铸1-3分钟，得到水合凝胶块; 释放; 干燥并任选地加入0.063-0.084重量％的乙醇以防止干燥收缩引起的疲劳; 热 - 硬化; 在950-1050℃下烧结2-3小时。

2. 发明公开

KR1020030014828A 진공정밀주조용 세라믹 코어의 조성물 失效
标题翻译：真空精密铸造陶瓷制造
公开(公告)号：KR1020030014828A
公开(公告)日：2003-02-20
申请号：KR1020010048709
申请日：2001-08-13
申请人： 한국전력공사
发明人： 김재철 , 김의환 , 장중철 , 조창용 , 김인수 , 김두현 , 유영수 , 최백규 , 김재원
IPC分类号： C04B35/14 , C04B35/64
CPC分类号： C04B35/14 , B22C1/00 , B22C9/10 , C04B35/624 , C04B35/632 , C04B35/64 , C04B2111/0087 , C04B2235/6023
摘要： PURPOSE: A manufacturing method of ceramic cores used in vacuum precision casting of complicated shaped- or hollowed-products process is provided, which improves dimensional preciseness and product quality, and shortens the process by gel casting through radical polymerization in aqueous media. CONSTITUTION: The manufacturing method of ceramic cores for vacuum precision casting is as follows: preparing a ceramic mixture solution by dispersing high concentration ceramic mixture containing 73-77wt.% of fused silica, 18-22wt.% of zircon and 4-6wt.% of cordierite into solvent(ethyl alcohol) containing 3-4wt.% of monomer, 0.6-0.8wt.% of dimer and 0.4-0.6wt.% of polyelectrolyte dispersant such as alginic acid and polyacrylic acid; casting at 20-25deg.C for 1-3min to be hydrated gel compacts; releasing; drying and optionally adding 0.063-0.084wt.% of ethyl alcohol to prevent fatigue arising from dry shrinkage; thermal-hardening; sintering at 950-1050deg.C for 2-3hrs.
摘要翻译：目的：提供一种用于复杂形状或中空产品工艺的真空精密铸造的陶瓷芯的制造方法，其提高尺寸精度和产品质量，并且通过在水性介质中的自由基聚合通过凝胶浇铸缩短工艺。构成：用于真空精密铸造的陶瓷芯的制造方法如下：通过分散含有73-77重量％的熔融二氧化硅，18-22重量％的锆石和4-6重量％的高浓度陶瓷混合物来制备陶瓷混合物溶液，的堇青石转化成含有3-4重量％单体的溶剂（乙醇），0.6-0.8重量％的二聚体和0.4-0.6重量％的聚电解质分散剂如海藻酸和聚丙烯酸; 浇铸20-25℃，1-3分钟水合凝胶; 释放; 干燥并任选加入0.063-0.084重量％的乙醇，以防止干燥收缩引起的疲劳; 热 - 硬化; 在950-1050℃烧结2-3小时。

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