JPS56136926A - Hardening method for hollow rack shaft - Google Patents
Hardening method for hollow rack shaftInfo
- 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
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.
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)
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 |
-
1980
- 1980-03-25 JP JP3876180A patent/JPS6026811B2/en not_active Expired
Cited By (4)
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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