JPS5719327A - Heat treatment device for link chain - Google Patents
Heat treatment device for link chainInfo
- Publication number
- JPS5719327A JPS5719327A JP7340981A JP7340981A JPS5719327A JP S5719327 A JPS5719327 A JP S5719327A JP 7340981 A JP7340981 A JP 7340981A JP 7340981 A JP7340981 A JP 7340981A JP S5719327 A JPS5719327 A JP S5719327A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- austenitizing
- heated
- high frequency
- parts
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
- Control Of Temperature (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
PURPOSE: To increase tensile strength and impact resistance by making the austenitizing temp. in the shoulder parts of element links higher than the austenitizing temp. in parallel parts in heat treatment of link chains.
CONSTITUTION: A strand of link chain 27 is continuously introduced into the furnace core pipe 14 of a high frequency induction heating furnace 4 in a hardening device 2 by a chain wheel 22, wherein the parallel parts of element links are heated to an Ac3 transformation point or an austenitizing temp. Tγ-H higher than this by a high frequency induction heating coil 7, and the shoulder parts are heated so as to attain an austenitizing temp. Tγ-K higher than Tγ-H. Thence, the chain is quickly cooled in a cooling device 5, and is thereby hardened. Next, it is introduced into the furnace core pipe 14 of an annealing device 3 via a liquid storage tank 19 and a chain wheel 28. Here, it is so heated by a high frequency induction heating coil 7 that the temp. Tt-H in the parallel parts rises higher than the temp. Tt-K in the shoulder parts, thence it is cooled in a cooling device, and is thereby tempered.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7340981A JPS6035971B2 (en) | 1981-05-18 | 1981-05-18 | Link chain heat treatment equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7340981A JPS6035971B2 (en) | 1981-05-18 | 1981-05-18 | Link chain heat treatment equipment |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6966676A Division JPS52152809A (en) | 1976-06-16 | 1976-06-16 | Process and apparatus for heat treatment of link chain |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5719327A true JPS5719327A (en) | 1982-02-01 |
JPS6035971B2 JPS6035971B2 (en) | 1985-08-17 |
Family
ID=13517361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7340981A Expired JPS6035971B2 (en) | 1981-05-18 | 1981-05-18 | Link chain heat treatment equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6035971B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108239689A (en) * | 2018-01-08 | 2018-07-03 | 河钢股份有限公司 | Improve the process for quenching of high-strength mining ring chain steel through hardening performance |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0511358Y2 (en) * | 1986-11-10 | 1993-03-19 | ||
JPS6378195U (en) * | 1986-11-10 | 1988-05-24 | ||
JPS6378196U (en) * | 1986-11-10 | 1988-05-24 |
-
1981
- 1981-05-18 JP JP7340981A patent/JPS6035971B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108239689A (en) * | 2018-01-08 | 2018-07-03 | 河钢股份有限公司 | Improve the process for quenching of high-strength mining ring chain steel through hardening performance |
Also Published As
Publication number | Publication date |
---|---|
JPS6035971B2 (en) | 1985-08-17 |
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