Processing

Please wait...

Settings

Settings

Goto Application

1. JP2007204814 - INDUCTION HARDENING METHOD

Office
Japan
Application Number 2006024942
Application Date 01.02.2006
Publication Number 2007204814
Publication Date 16.08.2007
Grant Number 5060054
Grant Date 10.08.2012
Publication Kind B2
IPC
C21D 9/00
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C21D 1/10
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
06Surface hardening
09by direct application of electrical or wave energy; by particle radiation
10by electric induction
C21D 1/18
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
C21D 9/28
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
28for plain shafts
H05B 6/06
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
6Heating by electric, magnetic, or electromagnetic fields
02Induction heating
06Control, e.g. of temperature, of power
H05B 6/10
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
6Heating by electric, magnetic, or electromagnetic fields
02Induction heating
10Induction heating apparatus, other than furnaces, for specific applications
CPC
C21D 1/10
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
06Surface hardening
09by direct application of electrical or wave energy; by particle radiation
10by electric induction
C21D 1/18
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening
C21D 1/42
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
34Methods of heating
42Induction heating
C21D 1/78
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
78Combined heat-treatments not provided for above
C21D 9/00
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C21D 9/28
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
28for plain shafts
Applicants HONDA MOTOR CO LTD
本田技研工業株式会社
Inventors MINEMURA KAZUO
峯村 和男
CHIKASAWA YUKIHIRO
近澤 幸浩
Agents 千葉 剛宏
宮寺 利幸
佐藤 辰彦
Title
(EN) INDUCTION HARDENING METHOD
(JA) 高周波焼入れ方法
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an induction hardening method capable of omitting any cold straining removing process of a long workpiece consisting of a Fe-based alloy.

SOLUTION: In the induction hardening method, the heating process is performed in which a long workpiece LW consisting of a Fe-based alloy is heated by an induction heating coil 16 while turning the workpiece at the predetermined number of revolutions under the operation of rotary chucks 14a, 14b. After stopping the heating, the long workpiece LW is brought into contact with first to fourth straightening rollers 24a-24d while increasing the number of revolutions of the long workpiece LW, and the workpiece is cooled to the temperature zone of not higher than Pf temperature to the temperature exceeding the Ms temperature in such a state (first cooling step). The cooling time in this state is preferably 5-10 seconds. next, the number of revolutions of the long workpiece LW is decreased, preferably equal to the number of revolutions in the heating state, and the long workpiece LW is continuously cooled (second cooling step).

COPYRIGHT: (C)2007,JPO&INPIT

(JA)

【課題】Fe基合金からなる長尺ワークに対する冷間歪除去加工を、省略可能にする。
【解決手段】Fe基合金からなる長尺ワークLWを、回転チャック14a、14bの作用下に所定の回転数で回転させながら高周波加熱コイル16で加熱して加熱工程を行う。加熱を停止した後、長尺ワークLWの回転数を大きくしながら第1〜第4矯正ローラ24a〜24dに接触させ、この状態で、Pf温度以下〜Ms温度超の温度域まで冷却する(第1冷却工程)。この際の冷却時間は、5〜10秒とすることが好ましい。次に、長尺ワークLWの回転数を小さくし、好ましくは加熱時の回転数と同等として、長尺ワークLWの冷却を続行する(第2冷却工程)。
【選択図】図1