KR950014348A - Manufacturing method of non-coated steel for high strength, high toughness hot forging - Google Patents

Manufacturing method of non-coated steel for high strength, high toughness hot forging Download PDF

Info

Publication number
KR950014348A
KR950014348A KR1019930023959A KR930023959A KR950014348A KR 950014348 A KR950014348 A KR 950014348A KR 1019930023959 A KR1019930023959 A KR 1019930023959A KR 930023959 A KR930023959 A KR 930023959A KR 950014348 A KR950014348 A KR 950014348A
Authority
KR
South Korea
Prior art keywords
coated steel
high strength
manufacturing
hot forging
rolled
Prior art date
Application number
KR1019930023959A
Other languages
Korean (ko)
Other versions
KR960006455B1 (en
Inventor
이덕락
박수동
박성운
Original Assignee
조말수
포항종합제철주식회사
백덕현
재단법인산업과학기술연구소
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 조말수, 포항종합제철주식회사, 백덕현, 재단법인산업과학기술연구소 filed Critical 조말수
Priority to KR1019930023959A priority Critical patent/KR960006455B1/en
Publication of KR950014348A publication Critical patent/KR950014348A/en
Application granted granted Critical
Publication of KR960006455B1 publication Critical patent/KR960006455B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

본 발명에 의하여 소입및 소려공정이 생략된 고강도, 고인성 열간단조용 비조질강의 제조방법이 제공된다. 이 방법은 중량%로, C : 0.02-0.50%, Si : 0.40-0.80%, Mn : 1.0-2.0, Cr : 0.05-0.50%, Mo : 0.01-0.1%, Ni : 0.02-0.10%, V : 0.05-0.20%, Ti : 0.01-0.04%, Al : 0.01-0.10%, N : 0.005-0.030%, P : 0.030%이하, S : 0.02-0.10%, 잔부 Fe및 기타 불가피하게 함유되는 불순물로 조성되는 강을 열간에서 강편압연 혹은 봉강압연하여 주조조직을 파괴한 후, 다시 1100-1300℃로 재가열후 열간단조를 실시하여 900℃이상의 온도에서 마무리 단조를 하고, 이후 400℃까지 10-200℃/min의 냉각속도로 냉각시킨 후 공냉함을 포함한다.According to the present invention, there is provided a method for producing a high strength, high toughness hot forging non-coated steel, in which hardening and annealing are omitted. This method is in weight%, C: 0.02-0.50%, Si: 0.40-0.80%, Mn: 1.0-2.0, Cr: 0.05-0.50%, Mo: 0.01-0.1%, Ni: 0.02-0.10%, V: 0.05-0.20%, Ti: 0.01-0.04%, Al: 0.01-0.10%, N: 0.005-0.030%, P: 0.030% or less, S: 0.02-0.10%, balance Fe and other unavoidable impurities After the steel is hot rolled or rolled to break the cast structure, it is reheated to 1100-1300 ℃ and hot forged to finish forging at a temperature above 900 ℃, and then 10-200 ℃ / to 400 ℃. air cooled after cooling to a cooling rate of min.

Description

고강도, 고인성 열간단조용 비조질강의 제조방법Manufacturing method of non-coated steel for high strength, high toughness hot forging

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

제1도는 본 발명의 방법에 의해 제조된 강의 미세조직사진이다.1 is a microstructure photograph of a steel produced by the method of the present invention.

Claims (1)

중량%로, C : 0.20-0.50%, Si : 0.40-0.80%, Mn : 1.0-2.0%, Cr : 0.05-0.50%, Mo : 0.01-0.1%, Ni : 0.02-0.10%, V : 0.05-0.20%, Ti : 0.01-0.04%, Al : 0.01-0.10%, N : 0.005-0.030%, P : 0.030% 이하, S : 0.02-0.10%, 잔부 Fe 및 기타 불가피하게 함유되는 불순물로 조성되는 강을 열간에서 강편압연 혹은 봉강압연하여 주조조직을 파괴한 후, 다시 1100-1300℃로 재가열후 열간단조를 실시하여 900℃ 이상의 온도에서 마무리 단조를 하고, 이후 400℃까지 10-200℃/min의 냉각속도로 냉각시킨 후 공냉하는 것을 특징으로 하는 고강도·고인성 열간단조용 비조질강의 제조방법.By weight%, C: 0.20-0.50%, Si: 0.40-0.80%, Mn: 1.0-2.0%, Cr: 0.05-0.50%, Mo: 0.01-0.1%, Ni: 0.02-0.10%, V: 0.05- Steel composed of 0.20%, Ti: 0.01-0.04%, Al: 0.01-0.10%, N: 0.005-0.030%, P: 0.030% or less, S: 0.02-0.10%, balance Fe and other unavoidable impurities Hot-rolled or bar-rolled to destroy the cast structure, and then reheated to 1100-1300 ℃ and hot forged to finish forging at a temperature of 900 ℃ or higher, and then 10-200 ℃ / min up to 400 ℃. A method for producing a high strength, high toughness hot forged steel, characterized in that the cooling at a cooling rate and then air cooled. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930023959A 1993-11-11 1993-11-11 Making method of high strength high toughness hot forging steel with no-thermal refining KR960006455B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930023959A KR960006455B1 (en) 1993-11-11 1993-11-11 Making method of high strength high toughness hot forging steel with no-thermal refining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930023959A KR960006455B1 (en) 1993-11-11 1993-11-11 Making method of high strength high toughness hot forging steel with no-thermal refining

Publications (2)

Publication Number Publication Date
KR950014348A true KR950014348A (en) 1995-06-16
KR960006455B1 KR960006455B1 (en) 1996-05-16

Family

ID=19367860

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930023959A KR960006455B1 (en) 1993-11-11 1993-11-11 Making method of high strength high toughness hot forging steel with no-thermal refining

Country Status (1)

Country Link
KR (1) KR960006455B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100254820B1 (en) * 1997-08-27 2000-05-01 정몽규 Abrasion proof sintering alloy for exhaust valve seat
KR100262890B1 (en) * 1997-12-30 2000-08-01 정몽규 Fe system sintering alloy for valve tappet
KR100952010B1 (en) * 2007-11-14 2010-04-08 현대자동차주식회사 High Strength Microalloyed Steel composition for Connecting Rod and Manufacturing of Fracture Splittable connecting rods using the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101149249B1 (en) * 2009-04-27 2012-05-25 현대제철 주식회사 Method for producing of V-Free microalloyed steel having equality quality of quenching and tempered carbon steel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100254820B1 (en) * 1997-08-27 2000-05-01 정몽규 Abrasion proof sintering alloy for exhaust valve seat
KR100262890B1 (en) * 1997-12-30 2000-08-01 정몽규 Fe system sintering alloy for valve tappet
KR100952010B1 (en) * 2007-11-14 2010-04-08 현대자동차주식회사 High Strength Microalloyed Steel composition for Connecting Rod and Manufacturing of Fracture Splittable connecting rods using the same

Also Published As

Publication number Publication date
KR960006455B1 (en) 1996-05-16

Similar Documents

Publication Publication Date Title
KR20080034939A (en) Corrosion-resistant, cold-formable, machinable, high strength, martensitic stainless steel
JPH0734184A (en) Polyphase trace alloy steel
JP5206056B2 (en) Manufacturing method of non-tempered steel
KR950014348A (en) Manufacturing method of non-coated steel for high strength, high toughness hot forging
KR850003907A (en) Work hardenable austenitic manganese steel and its manufacturing method
JP2002167652A (en) Thin sheet material excellent in high strength-high fatigue resisting characteristic
JP2756556B2 (en) Non-heat treated steel for hot forging
KR950000908A (en) Manufacturing method of non-coated steel for high toughness hot forging
KR101642696B1 (en) High manganese light weight steel with excellent wear resistance and method of manufacturing the same
KR970043226A (en) High strength hot rolled steel sheet with excellent elongation property and manufacturing method
KR920012498A (en) Manufacturing method of welding steel with excellent stress corrosion cracking resistance
US4637841A (en) Superplastic deformation of duplex stainless steel
US5516373A (en) High performance steel strapping for elevated temperature service and method thereof
KR100232722B1 (en) Height tension nut making method of hot forging
KR960023123A (en) Manufacturing method of hot forged steel for excellent machinability
KR100415653B1 (en) Method for manufacturing micro-alloyed steel sheet having high strength and high ductility for hot-forging
JPH0229725B2 (en) KOJINSEINETSUKANTANZOYOHICHOSHITSUBOKONOSEIZOHOHO
JPS63162810A (en) Manufacture of non-heattreated hot forged product
KR940021745A (en) Method of manufacturing wear resistant steel sheet
KR930013188A (en) Manufacturing method of steel wire for high tension bolt
KR970043240A (en) Manufacturing method of non-alloyed steel with excellent impact toughness
JPH05171267A (en) Production of high toughness pearlite steel
KR960023169A (en) Manufacturing method of austenitic heat resistant steel
KR100325713B1 (en) Method for manufacturing alloy steel wire rod and bar
KR940014848A (en) Manufacturing method of 150KSi high strength steel at yield strength

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050511

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee