C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
39/1, 75/155
C21B 11/02 (2006.01) B22F 9/20 (2006.01) C22C 33/02 (2006.01)
Patent
CA 1087880
Abstract of the Disclosure A process and an apparatus for producing low-oxygen iron-base metallic powder are disclosed. The low-oxygen iron- base metallic powder is produced in a shaft-type apparatus comprising a preheating zone and an induction heating zone by alloying and/or admixing iron-base metallic raw powder to be subjected to a final reduction, which has an apparent density corresponding to 16-57% of theoretical true density, an oxygen content of not more than 6% by weight and a particle size of not more than 1 mm, with carbon or carbonaceous granule in an amount corresponding to not more than an objective alloying carbon content of a final produce (% by weight) + an oxygen content of the powder just before the final reduction (% by weight) x 1.35 to form a starting powder, preheating the starting powder at a temperature of 780 - 1,130°C in a non- oxidizing atmosphere having a theoretical oxygen partial pressure of not more than 2.1 x 10-1 mmHg and a dew point of not more than +5°C in the preheating zone to form a preheated and sintered cake (P-cake), induction heating the P-cake at a temperature of 850 - 1,400°C in the same atmosphere by applying an alternating power of 50 Hz to 500 kHz from power supply to effect deoxidation and decarburization to form an induction heated cake (I-cake), and then cooling and pulverizing the I- cake.
273572
Ito Shunji
Kajinaga Yoshihiro
Nitta Minoru
Sakurada Ichio
Kawasaki Steel Corporation
Smart & Biggar
LandOfFree
Process and an apparatus for producing low-oxygen iron-base... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and an apparatus for producing low-oxygen iron-base..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and an apparatus for producing low-oxygen iron-base... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-251315