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    • 31. 发明公开
    • 원심주조용 주형 도형재
    • 模具铸造用于离心铸造
    • KR1020100001291A
    • 2010-01-06
    • KR1020080061152
    • 2008-06-26
    • 현대제철 주식회사
    • 최인석서용찬
    • B22C3/00B22C1/16B22C1/00
    • B22C3/00B22C1/00
    • PURPOSE: A centrifugal casting material is provided to maintain the stability of product and to increases the viscosity of a casting layer by using silica powder. CONSTITUTION: A centrifugal casting material comprises a step of adding bonging agent, diluents and small amount of surfactant into a casting material comprised of a first component system(23) and a second component system(27). The mixing ratio of the casting material, bonging agent, and diluents is 55: 2~3: 30~40. The first component system of the casting material includes silica(SiO2) of chamotte powder system and the content is 95 ~ 99 wt% range. The second component system of the casting material includes zircon(ZrO2), alumina(Al2O3), and ferric oxide(F2O3). And the total content is 0.001 ~ 1 wt%.
    • 目的:提供一种离心铸造材料,以保持产品的稳定性,并通过使用二氧化硅粉末提高浇铸层的粘度。 构成:离心铸造材料包括将Bonging剂,稀释剂和少量表面活性剂加入到由第一组分体系(23)和第二组分体系(27)组成的铸造材料中的步骤。 铸造材料,膨润剂和稀释剂的混合比为55:2〜3:30〜40。 铸造材料的第一组分体系包括二氧化硅(SiO 2),其含量为95〜99重量%。 铸造材料的第二组分体系包括锆石(ZrO 2),氧化铝(Al 2 O 3)和氧化铁(F 2 O 3)。 总含量为0.001〜1重量%。
    • 35. 发明公开
    • 진공정밀주조용 세라믹 코어의 조성물
    • 真空精密铸造陶瓷制造
    • KR1020030014828A
    • 2003-02-20
    • KR1020010048709
    • 2001-08-13
    • 한국전력공사
    • 김재철김의환장중철조창용김인수김두현유영수최백규김재원
    • C04B35/14C04B35/64
    • C04B35/14B22C1/00B22C9/10C04B35/624C04B35/632C04B35/64C04B2111/0087C04B2235/6023
    • 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.
    • 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。
    • 39. 发明公开
    • 슬래그를 재활용한 주물사의 제조방법
    • 使用SLAG成型砂的制造方法
    • KR1020120029790A
    • 2012-03-27
    • KR1020100091847
    • 2010-09-17
    • 주식회사 효석
    • 김효수강병화
    • B22C1/00B22C5/04B22C5/06C04B5/00
    • B22C5/04B22C1/00B22C5/06C04B5/06
    • PURPOSE: A molding sand manufacturing method reusing slag is provided to use ferronickel slag generated in a ferronickel factory instead of natural silica sand, thereby manufacturing the molding sand by recycling resources. CONSTITUTION: A molding sand manufacturing method includes the following steps. Ferronickel slag is dried. The ferronickel slag is classified into particle size by a mesh net. The classified ferronickel is grinded. The grinded ferronickel is polished. The ferronickel slag is classified for the second time within a mesh range of 12~140. The ferronickel slag in the drying step is quenched by water. An additive of 0.5~2.5 weight % of the total molding sand is added after the second classification step.
    • 目的:提供一种使用矿渣的型砂制造方法,使用镍铁生产的铁镍渣代替天然硅砂,从而通过循环利用资源制造型砂。 构成:成型砂制造方法包括以下步骤。 铁粉渣干燥。 铁镍渣通过网状网分为粒度。 分类的镍铁被研磨。 研磨的镍铁被抛光。 铁镍矿渣在12〜140目的范围内第二次分类。 干燥步骤中的铁镍渣用水淬火。 在第二次分级步骤之后,加入总砂型0.5〜2.5%的添加剂。