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KR900006526A - Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore - Google Patents

Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore Download PDF

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Publication number
KR900006526A
KR900006526A KR1019880013397A KR880013397A KR900006526A KR 900006526 A KR900006526 A KR 900006526A KR 1019880013397 A KR1019880013397 A KR 1019880013397A KR 880013397 A KR880013397 A KR 880013397A KR 900006526 A KR900006526 A KR 900006526A
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South Korea
Prior art keywords
ore
add
carbon
reaction
lay
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Ceased
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KR1019880013397A
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Korean (ko)
Inventor
서언식
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서언식
이남구
최충열
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Priority to KR1019880013397A priority Critical patent/KR900006526A/en
Publication of KR900006526A publication Critical patent/KR900006526A/en
Ceased legal-status Critical Current

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Abstract

내용 없음No content

Description

란타늄·이트륨(La·Y) 광석을 이용한 탄소공구강의 제강법Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

본문에서 기술한 바와 같이 회토류 원소품위가 0.04% 이상과 MgO, CaO, Al2O3SiO2산화물 등으로 구성된 La·Y 광석 투입량을 선철 또는 고철 투입량당 중량비로 15-20%를 투입하되, 광석을 10메쉬 이하로 분쇄시켜 이의 1/3을 고처의 용해중인 로에 함께 투입용해시켜 RE 1차 반응을 시킨 다음 스래그를 제거하고 다시 광석 1/3을 투입하여 RE 2차 반응을 시켜 스래그를 제거한 다음 탄소량을 0.6-1.5%로 조정하고, 나머지 광석 1/3을 투입하여 RE 최후반응을 시켜 스래그를 제거한 다음 탈산제로서 Fe-Si, Fe-Mn량을 통상의 조업방식으로 투입하고 순도 40%의 Fe-Ti 1.5kg/고철톤당을 함께 넣어 탈산시킴과 동시에 최종 탈산제로서 Al : 1-2kg을 출강 직전에 투입시킴으로써 구상화조직으로 유도되게 한 것을 특징으로 하는 La·Y 광석을 이용한 탄소공구강의 제강법.As described in the text, 15-20% of La · Y ore input composed of 0.04% or more of rare earth element and MgO, CaO, Al 2 O 3 SiO 2 oxide, etc. is added in the weight ratio of pig iron or scrap metal. Grind ore to less than 10 mesh, dissolve 1/3 of it together in the furnace of melting furnace to perform RE 1st reaction, remove slag and add 1/3 of ore to RE 2nd reaction After removing the carbon, adjust the carbon amount to 0.6-1.5%, add the remaining 1/3 of the ore and perform the final reaction of RE to remove the slag, and then add Fe-Si and Fe-Mn as deoxidizers in the usual manner. Carbon with La · Y ore, characterized by deoxidation by adding 1.5 kg of Fe-Ti with 40% purity per ton of scrap iron, and simultaneously introducing 1-2 kg of Al as a final deoxidizer to the spheroidized tissue. Steelmaking method of tool steel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880013397A 1988-10-14 1988-10-14 Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore Ceased KR900006526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880013397A KR900006526A (en) 1988-10-14 1988-10-14 Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880013397A KR900006526A (en) 1988-10-14 1988-10-14 Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore

Publications (1)

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KR900006526A true KR900006526A (en) 1990-05-08

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KR1019880013397A Ceased KR900006526A (en) 1988-10-14 1988-10-14 Steelmaking method of carbon steel ball using lanthanum yttrium (LaY) ore

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A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19881014

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19881014

Comment text: Request for Examination of Application

PG1501 Laying open of application
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Patent event date: 19901128

Patent event code: PE09021S01D

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Comment text: Notification of reason for refusal

Patent event date: 19910420

Patent event code: PE09021S01D

E601 Decision to refuse application
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Patent event date: 19910628

Comment text: Decision to Refuse Application

Patent event code: PE06012S01D

Patent event date: 19910420

Comment text: Notification of reason for refusal

Patent event code: PE06011S01I

Patent event date: 19901128

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Patent event code: PE06011S01I

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PJ2001 Appeal

Appeal kind category: Appeal against decision to decline refusal

Decision date: 19921031

Appeal identifier: 1991201001174

Request date: 19910726

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PJ2002 Appeal before the supreme court

Request date: 19921201

Appeal identifier: 1992301001981

Appeal kind category: Appeal against decision to decline refusal

Decision date: 19930813