JPS55119134A - Manufacture of high tensile steel wire rod - Google Patents
Manufacture of high tensile steel wire rodInfo
- Publication number
- JPS55119134A JPS55119134A JP2631679A JP2631679A JPS55119134A JP S55119134 A JPS55119134 A JP S55119134A JP 2631679 A JP2631679 A JP 2631679A JP 2631679 A JP2631679 A JP 2631679A JP S55119134 A JPS55119134 A JP S55119134A
- Authority
- JP
- Japan
- Prior art keywords
- wire rod
- high tensile
- hot
- manufacture
- steel
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
Abstract
PURPOSE:To manufacture high tensile steel wire rod for a PC steel bar, which is excellent in mechanical characteristics such as a yield point, relaxation resisting characteristics, etc., by a method wherein low alloy steel is rolled under a specified condition and hot-corrected without quenching it. CONSTITUTION:Low alloy steel containing 0.10-0.40% C, 0.05-1.50% Si, 0.70-2.50% Mn, 0.10-1.50% Cr, 0.05-0.50% Mo is hot-rolled and worked to wire rod. The wire rod is forcedly cooled at 500-700 deg.C immediately, and developed in a shape that forms continuous rings on a conveyor under hot-cold austenite conditions. The wire rod is changed into martensite structure on the conveyor by cooling it at cooling speed of 7 deg.C/second or more by a blast. The wire rod is spirally wound by means of a focusing device, slowly cooled and self-tempered. And the wire rod is warm-corrected to that the bending of the wire rod be kept within 4mm per 1.5m at the temperatures of 100-450 deg.C. Thus, the high tensile wire rod is obtained whose yield point is high, excellent in relaxation resisting characteristics and suitable for a PC steel bar in tensile strength of 110kg/m<2> or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2631679A JPS55119134A (en) | 1979-03-07 | 1979-03-07 | Manufacture of high tensile steel wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2631679A JPS55119134A (en) | 1979-03-07 | 1979-03-07 | Manufacture of high tensile steel wire rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55119134A true JPS55119134A (en) | 1980-09-12 |
| JPS6115926B2 JPS6115926B2 (en) | 1986-04-26 |
Family
ID=12189970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2631679A Granted JPS55119134A (en) | 1979-03-07 | 1979-03-07 | Manufacture of high tensile steel wire rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55119134A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782423A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire |
| JPS5782431A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire rod |
| JPS5782422A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire |
| JPS58338A (en) * | 1981-06-26 | 1983-01-05 | High Frequency Heattreat Co Ltd | Manufacturing device for steel rod or steel wire for prestressed concrete with superior delay breaking and superior mechanical characteristics |
| US4533401A (en) * | 1981-01-27 | 1985-08-06 | Kabushiki Kaisha Kobe Seiko Sho | Process for producing steel wire or rods of high ductility and strength |
| US4604146A (en) * | 1980-11-08 | 1986-08-05 | Sumitomo Metal Industries, Ltd. | Process for manufacturing high tensile steel wire |
| CN104451407A (en) * | 2014-11-25 | 2015-03-25 | 东北大学 | Low-carbon hot-rolled ultrahigh-strength high-toughness steel and preparation method thereof |
| CN106319180A (en) * | 2016-08-31 | 2017-01-11 | 云南德胜钢铁有限公司 | Machining technology of anti-knock reinforcing steel bars |
-
1979
- 1979-03-07 JP JP2631679A patent/JPS55119134A/en active Granted
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782423A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire |
| JPS5782431A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire rod |
| JPS5782422A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire |
| JPS601931B2 (en) * | 1980-11-08 | 1985-01-18 | 住友金属工業株式会社 | High tensile strength wire manufacturing method |
| JPS6043892B2 (en) * | 1980-11-08 | 1985-10-01 | 住友金属工業株式会社 | High tensile strength wire manufacturing method |
| US4604146A (en) * | 1980-11-08 | 1986-08-05 | Sumitomo Metal Industries, Ltd. | Process for manufacturing high tensile steel wire |
| JPH0146566B2 (en) * | 1980-11-08 | 1989-10-09 | Sumitomo Metal Ind | |
| US4533401A (en) * | 1981-01-27 | 1985-08-06 | Kabushiki Kaisha Kobe Seiko Sho | Process for producing steel wire or rods of high ductility and strength |
| JPS58338A (en) * | 1981-06-26 | 1983-01-05 | High Frequency Heattreat Co Ltd | Manufacturing device for steel rod or steel wire for prestressed concrete with superior delay breaking and superior mechanical characteristics |
| JPS6249334B2 (en) * | 1981-06-26 | 1987-10-19 | Koshuha Netsuren Kk | |
| CN104451407A (en) * | 2014-11-25 | 2015-03-25 | 东北大学 | Low-carbon hot-rolled ultrahigh-strength high-toughness steel and preparation method thereof |
| CN106319180A (en) * | 2016-08-31 | 2017-01-11 | 云南德胜钢铁有限公司 | Machining technology of anti-knock reinforcing steel bars |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115926B2 (en) | 1986-04-26 |
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