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。

公开(公告)号：US3711278A

公开(公告)日：1973-01-16

申请号：US3711278D

申请日：1970-02-17

Applicant: STORA KOPPARBERGS BERGSLAGS AB

Inventor： JOSEFSSON E

IPC: C21C5/00 ,  C22C33/00 ,  C22C39/14

CPC classification number: C21C5/005 ,  C22C33/00

Abstract: A CHROMIUM ALLOYED STEEL IS MANUFACTURED IN THIS WAY. MOLTEN IRON, CONTAINING CARBON AND ALLOYING SUBSTNCES, IS MIXED WITH CHROMIUM OXIDE AND A SLAG FORMING AGENT, THE ALLOYING SUBSTANCES ARE OXIDIZED TO FORM SLAG. THE CHROMIUM OXIDE IS REDUCED TO METALLIC CHRONIUM. THE SLAG IS REMOVED. THE MOLTEN METAL IS NOW REFINED BY MEANS OF OXYGEN, RESULTING IN THE CARBON CONTENT DROPPING FROM 2 TO 0.2% AND THE TEMPERATURE INCREASING TO 1700*C.