公开(公告)号：US20040050957A1

公开(公告)日：2004-03-18

申请号：US10646702

申请日：2003-08-25

Applicant: SANDVIK AB

Inventor： Alf Andersson ,  Bo Nelander ,  Ulf Jutterstrom

IPC: B05B003/10 ,  B05B001/26

CPC classification number: B01J2/20 ,  B01J2/04 ,  B01J2/14 ,  B05B3/1007 ,  B05B3/1014 ,  B22F1/0096 ,  B22F9/026 ,  B22F2999/00 ,  C22C1/051

Abstract: A new method and apparatus for manufacturing powders of cemented carbide, cermets, ceramics and similar materials with good abrasive wear resistance starting from a slurry, wherein the slurry is introduced into a drop forming device including at least one essentially horizontal oriented rotating drop forming disk (12), from which the drops are slung out to solidify by centrifugal force. According to the invention the slurry is ejected from a discharge opening (21) on the drop former in the form of a jet such that it hits a first obliquely downward and inwardly directed surface (22) whereby the speed of rotation of the disk is chosen such that the jet of liquid is forced upwards over the first surface as well as over to another connected horizontal surface (23) and thereafter is ejected as a split jet against a second obliquely downwards-outwards directed surface (25) such that the slurry is accelerated to the speed of the drop forming disk (12) and then is led over a third surface (26) obliquely directed outwards, from where the drops are then caused to detach themselves and fall down, thus forming a powder.

Abstract translation: 一种用于从浆料开始制造具有良好耐磨性的硬质合金，金属陶瓷，陶瓷和类似材料的粉末的新方法和装置，其中所述浆料被引入包括至少一个基本水平取向的旋转液滴形成盘的液滴形成装置（ 12），通过离心力将液滴从其中排出以固化。 根据本发明，浆料以喷射形式从液滴形成器上的排出口（21）喷出，使得其撞击第一倾斜向下和向内指向的表面（22），由此选择盘的旋转速度 使得液体射流被迫向上在第一表面上方以及另一个连接的水平表面（23）上，然后作为分裂射流喷射抵靠第二倾斜向下 - 向外指向的表面（25），使得浆料 加速到液滴形成盘（12）的速度，然后被引导到向外倾斜指向的第三表面（26）上，然后使液滴自身脱落，从而形成粉末。