JPS57198211A - Manufacture of heat treat pc steel rod - Google Patents
Manufacture of heat treat pc steel rodInfo
- Publication number
- JPS57198211A JPS57198211A JP8318381A JP8318381A JPS57198211A JP S57198211 A JPS57198211 A JP S57198211A JP 8318381 A JP8318381 A JP 8318381A JP 8318381 A JP8318381 A JP 8318381A JP S57198211 A JPS57198211 A JP S57198211A
- Authority
- JP
- Japan
- Prior art keywords
- working
- wire rod
- heating
- rod
- 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.)
- Pending
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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To manufacture a high tension PC steel rod or steel wire which is excellent in the delayed fracture resistance performance, by working a steel rod or a steel wire of martensite structure in hot working, and tempering it, in case of its drawing working and deforming working. CONSTITUTION:A wire rod 1 of martensite structure whose carbon content is <=0.4wt.% is heated continuously and quickly at a temperature rise speed exceeding 50 deg.C/second up to 250-600 deg.C of a tempering temperature, by high frequency induction heating or direct electrification heating, in a heating device 2. Said heat treatment is controlled, by measuring a surface temperature of the wire rod 1 with a thermometer 6. The wire rod 1 is led to a hot working device 3 within 10 seconds after heating, plastic working is performed within a range of 5-30% by a die or a roll, its heat is retained to a tempering temperature about 1 minute or less by a heat retaining furnace 4, and after that, it is forcibly cooled in a water-cooling. The wire rod is drawn out, putting tensile force on the wire rod 1 between said hot working device 3 and a drawing capstan 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8318381A JPS57198211A (en) | 1981-05-29 | 1981-05-29 | Manufacture of heat treat pc steel rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8318381A JPS57198211A (en) | 1981-05-29 | 1981-05-29 | Manufacture of heat treat pc steel rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57198211A true JPS57198211A (en) | 1982-12-04 |
Family
ID=13795191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8318381A Pending JPS57198211A (en) | 1981-05-29 | 1981-05-29 | Manufacture of heat treat pc steel rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198211A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581016A (en) * | 1981-06-26 | 1983-01-06 | High Frequency Heattreat Co Ltd | Production of steel bar of steel wire having superior delayed breakdown characteristic and mechanical properties for prestressed concrete |
| JPS62136520A (en) * | 1985-12-09 | 1987-06-19 | Sumitomo Metal Ind Ltd | Production of high tensile steel wire having excellent delayed cracking resistant characteristic |
| EP0199715A3 (en) * | 1985-04-26 | 1987-09-30 | Austria Draht Gesellschaft m.b.H. | Process for manufacturing steel wire |
| JPH0456728A (en) * | 1990-06-27 | 1992-02-24 | Kawatetsu Techno Wire Kk | Production of low relaxation pc steel material |
| CN113462869A (en) * | 2021-07-22 | 2021-10-01 | 南京宝日钢丝制品有限公司 | Treatment method of heat-resistant alloy cold-heading steel wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782431A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire rod |
| JPS5782423A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire |
| JPS5782422A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire |
| JPS57169020A (en) * | 1981-04-11 | 1982-10-18 | Sumitomo Metal Ind Ltd | Production of high tensile steel bar |
-
1981
- 1981-05-29 JP JP8318381A patent/JPS57198211A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782431A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire rod |
| JPS5782423A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tensile wire |
| JPS5782422A (en) * | 1980-11-08 | 1982-05-22 | Sumitomo Metal Ind Ltd | Production of high tension wire |
| JPS57169020A (en) * | 1981-04-11 | 1982-10-18 | Sumitomo Metal Ind Ltd | Production of high tensile steel bar |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581016A (en) * | 1981-06-26 | 1983-01-06 | High Frequency Heattreat Co Ltd | Production of steel bar of steel wire having superior delayed breakdown characteristic and mechanical properties for prestressed concrete |
| EP0199715A3 (en) * | 1985-04-26 | 1987-09-30 | Austria Draht Gesellschaft m.b.H. | Process for manufacturing steel wire |
| JPS62136520A (en) * | 1985-12-09 | 1987-06-19 | Sumitomo Metal Ind Ltd | Production of high tensile steel wire having excellent delayed cracking resistant characteristic |
| JPH0456728A (en) * | 1990-06-27 | 1992-02-24 | Kawatetsu Techno Wire Kk | Production of low relaxation pc steel material |
| CN113462869A (en) * | 2021-07-22 | 2021-10-01 | 南京宝日钢丝制品有限公司 | Treatment method of heat-resistant alloy cold-heading steel wire |
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