JPS5723026A - Spheroidization treatment for bar steel material - Google Patents
Spheroidization treatment for bar steel materialInfo
- Publication number
- JPS5723026A JPS5723026A JP9665980A JP9665980A JPS5723026A JP S5723026 A JPS5723026 A JP S5723026A JP 9665980 A JP9665980 A JP 9665980A JP 9665980 A JP9665980 A JP 9665980A JP S5723026 A JPS5723026 A JP S5723026A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- bar steel
- rate
- heating
- temperature
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 7
- 239000000463 material Substances 0.000 title abstract 7
- 239000010959 steel Substances 0.000 title abstract 7
- 238000010438 heat treatment Methods 0.000 abstract 5
- 238000001816 cooling Methods 0.000 abstract 2
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 239000010962 carbon steel Substances 0.000 abstract 1
- 238000005097 cold rolling Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (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 Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To give an evenly spheroidized structure to a bar steel material by a short-period heat treatment in which a stranded bar steel material is subjected to an annealing treatment involving heating and cooling under specific conditions. CONSTITUTION:A bar steel material, e.g., of carbon steel for the structures of machinery, cold rolling, etc., is made into a strand form, and then heated to a target temperature of Ac1+30 deg.C to Ac1+150 deg.C at an average heating rate of 50 deg.C/min or more. Then, the bar steel material is held at the target temperature for 5min or less, cooled for 10min or less to the transformation point Ar1, and then cooled at an average cooling rate of 0.5 to 5 deg.C/min in a temperature region of Ac1 to 40 deg.C for spheroidization. Thus, high temperatures can be effectively utilized because the rate, time, and temperature of heating the bar steel material can be exactly controlled, so that a bar steel material having evenly spheroidized structure can be obtained by a short-period heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9665980A JPS5723026A (en) | 1980-07-14 | 1980-07-14 | Spheroidization treatment for bar steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9665980A JPS5723026A (en) | 1980-07-14 | 1980-07-14 | Spheroidization treatment for bar steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5723026A true JPS5723026A (en) | 1982-02-06 |
| JPS6115930B2 JPS6115930B2 (en) | 1986-04-26 |
Family
ID=14170952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9665980A Granted JPS5723026A (en) | 1980-07-14 | 1980-07-14 | Spheroidization treatment for bar steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5723026A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113126A (en) * | 1982-12-17 | 1984-06-29 | Sumitomo Metal Ind Ltd | Continuous spheroidization treatment of steel wire |
| JPS59116330A (en) * | 1982-12-21 | 1984-07-05 | Sumitomo Metal Ind Ltd | Continuous spheroidizing treatment of steel wire |
| CN1089116C (en) * | 1999-04-30 | 2002-08-14 | 吴凡 | Carbide annealing process for high-speed great-deformation hot-rolled and cold-upset steel |
| KR100653134B1 (en) | 2006-04-25 | 2006-12-04 | 광진실업 주식회사 | Spheroidal Annealing Method of Medium Carbon Steel Bar Using Electric Induction Heating Equipment |
| JP2007077432A (en) * | 2005-09-13 | 2007-03-29 | Sanyo Special Steel Co Ltd | Manufacturing method of parts for ball screw or one-way clutch |
| JP2009242917A (en) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | Heat-treatment method for bearing steel |
| JP2009242919A (en) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | Heat-treatment method for bearing steel |
| KR100946129B1 (en) * | 2002-12-11 | 2010-03-10 | 주식회사 포스코 | Spherical heat treatment method to soften medium carbon steel quickly |
| CN102399954A (en) * | 2011-11-28 | 2012-04-04 | 燕山大学 | Variable-temperature treatment fast nodulizing method for high-carbon pearlite steel |
| CN111270066A (en) * | 2020-02-11 | 2020-06-12 | 宝钢湛江钢铁有限公司 | Humidification method of continuous annealing unit based on ultrasonic technology and aiming at nodulation prevention and treatment |
-
1980
- 1980-07-14 JP JP9665980A patent/JPS5723026A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113126A (en) * | 1982-12-17 | 1984-06-29 | Sumitomo Metal Ind Ltd | Continuous spheroidization treatment of steel wire |
| JPS59116330A (en) * | 1982-12-21 | 1984-07-05 | Sumitomo Metal Ind Ltd | Continuous spheroidizing treatment of steel wire |
| CN1089116C (en) * | 1999-04-30 | 2002-08-14 | 吴凡 | Carbide annealing process for high-speed great-deformation hot-rolled and cold-upset steel |
| KR100946129B1 (en) * | 2002-12-11 | 2010-03-10 | 주식회사 포스코 | Spherical heat treatment method to soften medium carbon steel quickly |
| JP2007077432A (en) * | 2005-09-13 | 2007-03-29 | Sanyo Special Steel Co Ltd | Manufacturing method of parts for ball screw or one-way clutch |
| KR100653134B1 (en) | 2006-04-25 | 2006-12-04 | 광진실업 주식회사 | Spheroidal Annealing Method of Medium Carbon Steel Bar Using Electric Induction Heating Equipment |
| JP2009242917A (en) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | Heat-treatment method for bearing steel |
| JP2009242919A (en) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | Heat-treatment method for bearing steel |
| CN102399954A (en) * | 2011-11-28 | 2012-04-04 | 燕山大学 | Variable-temperature treatment fast nodulizing method for high-carbon pearlite steel |
| CN111270066A (en) * | 2020-02-11 | 2020-06-12 | 宝钢湛江钢铁有限公司 | Humidification method of continuous annealing unit based on ultrasonic technology and aiming at nodulation prevention and treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115930B2 (en) | 1986-04-26 |
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