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    • 8. 发明授权
    • Method for producing a ceramic filter body
    • 陶瓷过滤体的制造方法
    • US08551272B2
    • 2013-10-08
    • US12515228
    • 2007-11-26
    • Jochen LinhartAndreas Franz
    • Jochen LinhartAndreas Franz
    • C03B29/00C04B33/34B31C1/00B01D46/10B01D39/00B01D39/14
    • B01D46/0001
    • The invention concerns a method for producing a ceramic filter body (1) for filtering an exhaust gas stream (2) of a diesel engine. The filter body (1) has planar and porous filter sections (3) that are designed to be passed by the exhaust gas flow (2) in a direction transverse to the face of the filter sections (3). A planar permeable fiber web (4, 4′), in particular of filter paper, is first impregnated with finely ground ceramic material (6) only across sections under formation of a non-impregnated section (12). The only partially ceramic-impregnated fiber web (4, 4′) is subsequently brought into the shape of a blank of the filter body (1) in such a way that the impregnated areas of the fiber web (4, 4′) assume the shape of the filter body (1). The fiber web (4, 4′) impregnated section-wise with the ceramic material (6) and shaped is subsequently sintered under heat in such a way that the fibers (5) of the fiber web are burned off and the ceramic material (6) is sintered under formation of the filter body (1) with filter sections (3) that are continuously porous and gas-permeable between their two faces (7, 8).
    • 本发明涉及一种制造用于过滤柴油发动机的废气流(2)的陶瓷过滤体(1)的方法。 过滤体(1)具有平面且多孔的过滤器部分(3),其被设计成在横向于过滤器部分(3)的表面的方向上被废气流(2)通过。 首先,在形成非浸渍部分(12)的部分之间,首先用细磨的陶瓷材料(6)浸渍平面的可渗透纤维网(4,4'),特别是滤纸。 随后将仅部分陶瓷浸渍的纤维网(4,4'')置于过滤体(1)的坯料的形状中,使纤维网(4,4')的浸渍区域呈现为 过滤体(1)的形状。 随后将陶瓷材料(6)分段浸渍并成形的纤维网(4,4'')在加热下烧结,使得纤维网的纤维(5)被烧掉并且陶瓷材料(6) )在过滤器主体(1)的形成下被烧结,过滤器部分(3)在它们的两个面(7,8)之间连续多孔并且是气体可渗透的。