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JPS6431927A - Production of heat-treated steel parts - Google Patents

Production of heat-treated steel parts

Info

Publication number
JPS6431927A
JPS6431927A JP18662287A JP18662287A JPS6431927A JP S6431927 A JPS6431927 A JP S6431927A JP 18662287 A JP18662287 A JP 18662287A JP 18662287 A JP18662287 A JP 18662287A JP S6431927 A JPS6431927 A JP S6431927A
Authority
JP
Japan
Prior art keywords
shot
alloy steel
hardened
peening
carbonitrided
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP18662287A
Other languages
Japanese (ja)
Other versions
JPH07109005B2 (en
Inventor
Yukio Arimi
Yoshihiko Kojima
Yoshihisa Miwa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP62186622A priority Critical patent/JPH07109005B2/en
Publication of JPS6431927A publication Critical patent/JPS6431927A/en
Publication of JPH07109005B2 publication Critical patent/JPH07109005B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To improve the fatigue strength of the title parts by carburizing or carbonitriding and hardening an alloy steel having a specified composition, and shot-peening the alloy steel while increasing the shot hardness and shot projecting velocity in a specified range. CONSTITUTION:The alloy steel consisting of 0.10-0.40% C, 0.06%<=Si<0.15%, 0.30-1.00% Mn, 0.90-1.20% Cr, 0.30%<Mo<=0.50%, and the balance Fe is carburized and hardened or carbonitrided and hardened. Shot-peening is then applied to the alloy steel at HRC 50-58 shot hardness and at 60-120m/sec shot projecting velocity. In such a constitution, the amt. of Mo effective to hardenability and preventing intergranular oxidation is increased, and the amt. of Si promoting remarkably intergranular oxidation and unrelated to hardenability is decreased to obtain the abovementioned composition. The depth of the surface abnormal layer of the carburized or carbonitrided and hardened alloy steel can be reduced to <=about 15mu under the influence of both components, and a residual compressive stress higher than before can be formed on the steel surface under the shot-peening conditions.
JP62186622A 1987-07-28 1987-07-28 Method for manufacturing heat-treated steel parts Expired - Fee Related JPH07109005B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62186622A JPH07109005B2 (en) 1987-07-28 1987-07-28 Method for manufacturing heat-treated steel parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62186622A JPH07109005B2 (en) 1987-07-28 1987-07-28 Method for manufacturing heat-treated steel parts

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP8346693A Division JP2839481B2 (en) 1996-12-09 1987-07-28 Heat-treated steel part and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPS6431927A true JPS6431927A (en) 1989-02-02
JPH07109005B2 JPH07109005B2 (en) 1995-11-22

Family

ID=16191802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62186622A Expired - Fee Related JPH07109005B2 (en) 1987-07-28 1987-07-28 Method for manufacturing heat-treated steel parts

Country Status (1)

Country Link
JP (1) JPH07109005B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5019182A (en) * 1988-09-27 1991-05-28 Mazda Motor Corporation Method of forming hard steels by case hardening, shot-peening and aging without tempering
JPH05287440A (en) * 1992-04-15 1993-11-02 Nippon Steel Corp Pc steel bar excellent in delayed fracture resistance
JP2014201811A (en) * 2013-04-08 2014-10-27 本田技研工業株式会社 Carburized component, method of manufacturing the same and steel for carburized component
US9410232B2 (en) 2011-11-01 2016-08-09 Nippon Steel & Sumitomo Metal Corporation Method for producing steel component
CN115011779A (en) * 2022-06-23 2022-09-06 东风商用车有限公司 High-speed heavy-load automobile nitrided inner gear ring and production process thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524851A (en) * 1978-08-09 1980-02-22 Hitachi Ltd Shot peening material and shot peening for stress corrosion cracking resistance
JPS6021359A (en) * 1983-07-15 1985-02-02 Daido Steel Co Ltd Steel for gear
JPS6233754A (en) * 1985-08-05 1987-02-13 Tokyo Netsushiyori Kogyo Kk Gas carburizing heat treatment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524851A (en) * 1978-08-09 1980-02-22 Hitachi Ltd Shot peening material and shot peening for stress corrosion cracking resistance
JPS6021359A (en) * 1983-07-15 1985-02-02 Daido Steel Co Ltd Steel for gear
JPS6233754A (en) * 1985-08-05 1987-02-13 Tokyo Netsushiyori Kogyo Kk Gas carburizing heat treatment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5019182A (en) * 1988-09-27 1991-05-28 Mazda Motor Corporation Method of forming hard steels by case hardening, shot-peening and aging without tempering
JPH05287440A (en) * 1992-04-15 1993-11-02 Nippon Steel Corp Pc steel bar excellent in delayed fracture resistance
US9410232B2 (en) 2011-11-01 2016-08-09 Nippon Steel & Sumitomo Metal Corporation Method for producing steel component
JP2014201811A (en) * 2013-04-08 2014-10-27 本田技研工業株式会社 Carburized component, method of manufacturing the same and steel for carburized component
US9771643B2 (en) 2013-04-08 2017-09-26 Honda Motor Co., Ltd. Carburized part, method for manufacturing thereof, and steel for carburized part
CN115011779A (en) * 2022-06-23 2022-09-06 东风商用车有限公司 High-speed heavy-load automobile nitrided inner gear ring and production process thereof

Also Published As

Publication number Publication date
JPH07109005B2 (en) 1995-11-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees