Title:
不活性ガスを使用した高周波焼入れ装置
Document Type and Number:
Japanese Patent JP4100758
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a low-oxidizing induction hardened article excellent in quality by efficiently making a chamber in a low-oxygen condition with small feeding amount of inert gas to reduce the surface roughness of a hardened surface in a induction hardening device using an inert gas. SOLUTION: In an induction hardening device 1 using an inert gas in which a specified part of a long work 5 is high-frequency heated under the inert gas atmosphere to perform the hardening in a moving condition, a chamber 2 is provided, the long work 5 is movable in its axial direction in the chamber 2, a high-frequency coil 6 is provided on a lower part in the chamber 2 surrounding the long work 5, an inert gas guide member 9a to feed the inert gas from the side of the long work 5 to the long work 5 is provided in the chamber 2 over the whole length in the longitudinal direction of the chamber 2, and a cooling means 11 to cool a specified part of the long work 5 heated by the high-frequency coil 6 is provided immediately below the chamber 2. The inert gas guide member 9a is formed of a perforated plate having a large number of gas ejection holes.
Inventors:
Yukihiro Iwasaki
Application Number:
JP7390498A
Publication Date:
June 11, 2008
Filing Date:
March 23, 1998
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
C21D1/10; C21D9/28; C21D1/74; F27D15/02
Domestic Patent References:
| JP58157954A | ||||
| JP4289123A | ||||
| JP5287363A |
Attorney, Agent or Firm:
Nozomi Gangwon
Nakamura Kun
Kuniyoshi Obata
Nakamura Kun
Kuniyoshi Obata