公开(公告)号：US4627945A

公开(公告)日：1986-12-09

申请号：US635076

申请日：1984-07-27

申请人： Howard M. Winkelbauer ,  Ke-Chin Wang ,  Frank H. Walther, Jr. ,  Donald F. Stock

发明人： Howard M. Winkelbauer ,  Ke-Chin Wang ,  Frank H. Walther, Jr. ,  Donald F. Stock

IPC分类号： C04B35/103 ,  B22D41/54 ,  C04B35/00 ,  C04B35/01 ,  C04B35/101 ,  C04B35/634 ,  B29C45/73

CPC分类号： C04B35/63472 ,  B22D41/54 ,  C04B35/013 ,  C04B35/101 ,  C04B35/634

摘要： An alumina-carbon shape is manufactured from a composition comprising 1-8 weight percent fine silicon, 1-16 weight percent reactive alumina, 1-30 weight percent calcined fluidized bed coke, 1-30 weight percent of a spalling inhibiting additive, and the balance of the mix synthetic alumina, plus the additions of 5-10 weight percent of a high carbon yielding resin as a molding vehicle and 0.5-4 weight percent solvent, and up to 2 weight percent of a low temperature curing agent, such as, paraformaldehyde or hydrochloric acid. The mix is formed at ambient temperature into a shape through an injection molding process. Solidification is accomplished by curing in the mold at a temperature less than 100.degree. C. After stripping the shape from the mold, the solvents are removed from the shape by drying at a temperature above 100.degree. C. The shapes are then heated to a temperature above 550.degree. C. to coke the resin. The shapes may be tar impregnated to decrease coked porosity and to increase their resistance to mold powder.

摘要翻译： 氧化铝 - 碳形状由包含1-8重量％的细硅，1-16重量％的活性氧化铝，1-30重量％的煅烧流化床焦炭，1-30重量％的剥落抑制添加剂的组合物制成， 平衡混合合成氧化铝，加上添加5-10重量％的作为成型载体的高碳树脂和0.5-4重量％溶剂，和至多2重量％的低温固化剂，例如， 多聚甲醛或盐酸。 混合物通过注射成型工艺在环境温度下形成为一种形状。 通过在低于100℃的温度下在模具中固化来实现凝固。从模具中剥离形状之后，通过在高于100℃的温度下干燥将溶剂从形状中除去。然后将形状加热至温度 高于550℃以使树脂焦化。 形状可以是焦油浸渍以减少焦化孔隙率并增加它们对模具粉末的抵抗力。