JPS558483A - Manufacture of directly heat treated high tension rod - Google Patents
Manufacture of directly heat treated high tension rodInfo
- Publication number
- JPS558483A JPS558483A JP8224378A JP8224378A JPS558483A JP S558483 A JPS558483 A JP S558483A JP 8224378 A JP8224378 A JP 8224378A JP 8224378 A JP8224378 A JP 8224378A JP S558483 A JPS558483 A JP S558483A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- cooled
- cooling
- coils
- heat treated
- 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 Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE: To manufacture titled high strength rod with uniform quality over the entire length, by precooling the rolled rod to a specified temperature for executing the finish rolling , by forcibly cooling to a specified temperature, and by air cooling after coiling to complete the transformation, and then, by naturally cooling after gathering the coils for proceeding the self tempering.
CONSTITUTION: The directly heat treated rod of low alloy steel containing c≤0.4% and one kind or more of Cr, Mo, B, etc., is precooled by the water cooled precooler 2 behind the intermediate mill 1, so as to make the temperature at entrance of the finishing mill to be 600W900°C; after that, the rod is rolled by the finishing mill 3, and is forcibly cooled by the forced cooler to 400W650°; this rod is then coiled. After cioling, the coils are spread on the conveyer and is cooled by the blown air at the average cooling speed above 7°c/s to complete the transformation into the martensitic structure; following to this, the coils are gathered and are naturally cooled at the cooling speed 1.0W0.5°c/s for proceeding the self tempering.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8224378A JPS6023172B2 (en) | 1978-07-05 | 1978-07-05 | Direct heat treatment high tensile strength wire manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8224378A JPS6023172B2 (en) | 1978-07-05 | 1978-07-05 | Direct heat treatment high tensile strength wire manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558483A true JPS558483A (en) | 1980-01-22 |
JPS6023172B2 JPS6023172B2 (en) | 1985-06-06 |
Family
ID=13768970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8224378A Expired JPS6023172B2 (en) | 1978-07-05 | 1978-07-05 | Direct heat treatment high tensile strength wire manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6023172B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735639A (en) * | 1980-08-08 | 1982-02-26 | Sumitomo Electric Ind Ltd | Production of high strength steel wire material |
JPS5782432A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire rod |
JPS57126913A (en) * | 1981-01-27 | 1982-08-06 | Kobe Steel Ltd | Production of high-toughness high-strength wire or rod steel |
JPS57161037A (en) * | 1981-03-31 | 1982-10-04 | Kawasaki Steel Corp | Direct working and heat treatment device train for hot rolled wire rod |
KR100421733B1 (en) * | 1998-12-24 | 2004-05-20 | 주식회사 포스코 | Carbon dioxide gas arc welding rod wire manufacturing method |
-
1978
- 1978-07-05 JP JP8224378A patent/JPS6023172B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735639A (en) * | 1980-08-08 | 1982-02-26 | Sumitomo Electric Ind Ltd | Production of high strength steel wire material |
JPH0127131B2 (en) * | 1980-08-08 | 1989-05-26 | Sumitomo Electric Industries | |
JPS5782432A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire rod |
JPS6159378B2 (en) * | 1980-11-08 | 1986-12-16 | Sumitomo Metal Ind | |
JPS57126913A (en) * | 1981-01-27 | 1982-08-06 | Kobe Steel Ltd | Production of high-toughness high-strength wire or rod steel |
JPH0112816B2 (en) * | 1981-01-27 | 1989-03-02 | Kobe Steel Ltd | |
JPS57161037A (en) * | 1981-03-31 | 1982-10-04 | Kawasaki Steel Corp | Direct working and heat treatment device train for hot rolled wire rod |
JPS6227127B2 (en) * | 1981-03-31 | 1987-06-12 | Kawasaki Steel Co | |
KR100421733B1 (en) * | 1998-12-24 | 2004-05-20 | 주식회사 포스코 | Carbon dioxide gas arc welding rod wire manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPS6023172B2 (en) | 1985-06-06 |
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