公开(公告)号：US3834629A

公开(公告)日：1974-09-10

申请号：US28198472

申请日：1972-08-18

Applicant: STORA KOPPARBERGS BERGSLAGS AB

Inventor： HELLMAN P ,  SONDELL J

IPC: B01J2/02 ,  B22D41/50 ,  B22F9/08 ,  B05B1/04

CPC classification number: B22F9/082 ,  B22D41/50

Abstract: A falling stream of a liquid tends to obtain a circular cross sectional shape, owing to the surface tension of the liquid. In the manufacture of metal powder by atomizing a falling stream of molten metal it is desired, however, that the stream shall have a flattened cross sectional shape. It has been found useful to make the molten metal flow through an orifice having a rectangular cross sectional area, and to make the molten metal follow the short sides of the orifice for a longer distance than it follows the long sides of the orifice.

Abstract translation: 由于液体的表面张力，液体的下落流倾向于获得圆形横截面形状。 在通过雾化熔融金属的下落流来制造金属粉末时，然而，希望该流具有扁平的横截面形状。 已经发现使熔融金属流过具有矩形横截面面积的孔，并使熔融金属沿着孔的短边跟随孔口长边的距离更长的距离是有用的。

公开(公告)号：US3813196A

公开(公告)日：1974-05-28

申请号：US32483573

申请日：1973-01-18

Applicant: STORA KOPPARBERGS BERGSLAGS AB

Inventor： BACKSTROM S ,  HELLMAN P

IPC: B22F9/08 ,  B22D23/08

CPC classification number: B22F9/082 ,  B22F2009/088

Abstract: A device is provided for atomizing a molten metal stream whereby a first jet of an atomizing fluid is directed to a molten metal and a second jet is directed to the combined stream of the molten metal and first jet of atomizing fluid; the second jet impinges the combined stream at a certain angular relationship to the molten metal stream; as a result of the specific arrangement of the jets embodied in particular nozzles and their orientation, a fine, very uniform powder is obtained which consists of smooth, substantially spherical particles; the device is operational without any substantial splash-back and the amount of molten metal which may be atomized on basis of the fluid for operating of the jets constitutes an advantageous aspect of the device.

Abstract translation: 提供了一种用于雾化熔融金属流的装置，其中雾化流体的第一射流被引导到熔融金属，并且第二射流被引导到熔融金属和雾化流体的第一射流的组合流; 所述第二射流以与所述熔融金属流成一定角度的关系撞击所述组合流; 由于具体布置在特定喷嘴及其取向的特定布置的结果，获得由平滑的，基本上为球形的颗粒组成的细小的非常均匀的粉末; 该装置可操作而没有任何实质的飞溅，并且可以基于用于喷射的操作的流体被雾化的熔融金属的量构成装置的有利方面。

公开(公告)号：US3771929A

公开(公告)日：1973-11-13

申请号：US3771929D

申请日：1972-12-05

Applicant: STORA KOPPARBERGS BERGSLAGS AB

Inventor： HELLMAN P ,  JOSEFSSON E

IPC: B01J2/02 ,  B05B17/00 ,  B22D20060101 ,  B22F9/08 ,  B22D23/08

CPC classification number: B22F9/082

Abstract: A powder is produced by atomizing molten material by means of a jet of an atomizing fluid. The atomizing zone is surrounded by a wall defining a comparatively narrow passageway, to the effect that the jet of atomizing fluid will act as a jet pump creating a circulation of the gas in the atomizing chamber. Means are provided for cooling said gas.

Abstract translation: 通过雾化流体的射流使熔融材料雾化来制造粉末。 雾化区由限定相对窄的通道的壁包围，使得雾化流体的射流将用作喷射泵，从而产生气体在雾化室中的循环。 提供用于冷却所述气体的装置。