JPS56136926A - Hardening method for hollow rack shaft - Google Patents

Hardening method for hollow rack shaft

Info

Publication number
JPS56136926A
JPS56136926A JP3876180A JP3876180A JPS56136926A JP S56136926 A JPS56136926 A JP S56136926A JP 3876180 A JP3876180 A JP 3876180A JP 3876180 A JP3876180 A JP 3876180A JP S56136926 A JPS56136926 A JP S56136926A
Authority
JP
Japan
Prior art keywords
refrigerant
rack shaft
hole
rack
water
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
JP3876180A
Other languages
Japanese (ja)
Other versions
JPS6026811B2 (en
Inventor
Masanobu Ichinose
Hideji Sakamoto
Seiji Kanuki
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.)
YAMADA SEISAKUSHO YUUGEN
Yamada Manufacturing Co Ltd
Original Assignee
YAMADA SEISAKUSHO YUUGEN
Yamada Seisakusho KK
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 YAMADA SEISAKUSHO YUUGEN, Yamada Seisakusho KK filed Critical YAMADA SEISAKUSHO YUUGEN
Priority to JP3876180A priority Critical patent/JPS6026811B2/en
Publication of JPS56136926A publication Critical patent/JPS56136926A/en
Publication of JPS6026811B2 publication Critical patent/JPS6026811B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like

Landscapes

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

Abstract

PURPOSE:To prevent the quenching crack in thin-walled part and enhance toughness by heating the rack tooth part while cooling said part from the inner side by flowing a refrigerant such as water into a through-hole in heating the rack tooth part. CONSTITUTION:A hollow rack shaft 1 is mounted to jigs 2, and the conduits 3, 4 of a refrigerant reflux device are freely removably connected to the respective ends of the through-hole 5 of the rack shaft 1. Here, a refrigerant such as water is flowed from a refrigerant tank 6 storing said refrigerant into the through-hole 5 of the rack shaft 1 by way of a pump 7 and while the rack tooth part is being cooled from the inside, high-frequency current is conducted to an induction coil 8, whereby said part is heated for a prescribed time. Next, cooling water is ejected, whereby said part is hardened.
JP3876180A 1980-03-25 1980-03-25 Hardening method for hollow rack shaft Expired JPS6026811B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3876180A JPS6026811B2 (en) 1980-03-25 1980-03-25 Hardening method for hollow rack shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3876180A JPS6026811B2 (en) 1980-03-25 1980-03-25 Hardening method for hollow rack shaft

Publications (2)

Publication Number Publication Date
JPS56136926A true JPS56136926A (en) 1981-10-26
JPS6026811B2 JPS6026811B2 (en) 1985-06-26

Family

ID=12534259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3876180A Expired JPS6026811B2 (en) 1980-03-25 1980-03-25 Hardening method for hollow rack shaft

Country Status (1)

Country Link
JP (1) JPS6026811B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215829A (en) * 1990-01-24 1993-06-01 Hitachi, Ltd. Method for strengthening pressure resistance of a hollowed metallic structure and a pressure resistant structure made thereby
JP2010522276A (en) * 2007-03-28 2010-07-01 イーエフディー・インダクション・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Inductor for induction hardening of rod-shaped metal rack
CN109957638A (en) * 2019-03-06 2019-07-02 上海交通大学 A kind of method that the horizontal water quenching of shaft forgings with holes avoids inner hole from cracking

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215829A (en) * 1990-01-24 1993-06-01 Hitachi, Ltd. Method for strengthening pressure resistance of a hollowed metallic structure and a pressure resistant structure made thereby
JP2010522276A (en) * 2007-03-28 2010-07-01 イーエフディー・インダクション・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Inductor for induction hardening of rod-shaped metal rack
CN109957638A (en) * 2019-03-06 2019-07-02 上海交通大学 A kind of method that the horizontal water quenching of shaft forgings with holes avoids inner hole from cracking
US11085096B2 (en) 2019-03-06 2021-08-10 Shanghai Jiao Tong University Method for preventing cracking along the surface at the inner hole of a hollow shaft during horizontal water quenching

Also Published As

Publication number Publication date
JPS6026811B2 (en) 1985-06-26

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