JPS56150136A - Cooling method for hot rolled wire rod - Google Patents
Cooling method for hot rolled wire rodInfo
- Publication number
- JPS56150136A JPS56150136A JP5362580A JP5362580A JPS56150136A JP S56150136 A JPS56150136 A JP S56150136A JP 5362580 A JP5362580 A JP 5362580A JP 5362580 A JP5362580 A JP 5362580A JP S56150136 A JPS56150136 A JP S56150136A
- Authority
- JP
- Japan
- Prior art keywords
- wire rod
- hot rolled
- cooled
- temperature
- mechanical properties
- 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
- 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
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
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 avoid overcooling the surface of a wire rod and obtain a wire rod having mechanical properties similar to those of a lead-patened material by a method wherein a hot rolled wire rod of medium- or high-carbon steel is cooled rapidly under specified conditions and then cooled with an inorganic heat-insulating material adhered thereto. CONSTITUTION:Steel containing 0.25-1.0% of C, not more than 1.5% of Mn and the like is hot rolled into the wire rod, which is then cooled rapidly from an austenite temperature range to a temperature ranging from a temperature slightly higher than Ms point to 650 deg.C, at cooling rate of not less than 20 deg.C/sec. Then, the heat- insulating material consisting mainly of an inorganic white powder such as Al2O3 or one containing pulverulent Al and an igniter as main constituents is adhered to the surface of the wire rod, and the latter is cooled while preventing the surface from being overcooled. Accordingly, martensite or the like is prevented from being generated at the surface layer, while the temperature of the wire rod is equalized in the longitudinal direction, so that a wire rod excellent in mechanical properties can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5362580A JPS56150136A (en) | 1980-04-24 | 1980-04-24 | Cooling method for hot rolled wire rod |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5362580A JPS56150136A (en) | 1980-04-24 | 1980-04-24 | Cooling method for hot rolled wire rod |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56150136A true JPS56150136A (en) | 1981-11-20 |
Family
ID=12948083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5362580A Pending JPS56150136A (en) | 1980-04-24 | 1980-04-24 | Cooling method for hot rolled wire rod |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56150136A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100415902C (en) * | 2006-08-03 | 2008-09-03 | 上海交通大学 | Method of improving steel object surface hardness using carbon distribution |
CN108265163A (en) * | 2018-01-26 | 2018-07-10 | 贵州钢绳股份有限公司 | A kind of patenting coverture and its application in Steel Wire Heat Treatment |
-
1980
- 1980-04-24 JP JP5362580A patent/JPS56150136A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100415902C (en) * | 2006-08-03 | 2008-09-03 | 上海交通大学 | Method of improving steel object surface hardness using carbon distribution |
CN108265163A (en) * | 2018-01-26 | 2018-07-10 | 贵州钢绳股份有限公司 | A kind of patenting coverture and its application in Steel Wire Heat Treatment |
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