JPS5763637A - Production of steel plate for abrasion resistance - Google Patents
Production of steel plate for abrasion resistanceInfo
- Publication number
- JPS5763637A JPS5763637A JP13701380A JP13701380A JPS5763637A JP S5763637 A JPS5763637 A JP S5763637A JP 13701380 A JP13701380 A JP 13701380A JP 13701380 A JP13701380 A JP 13701380A JP S5763637 A JPS5763637 A JP S5763637A
- Authority
- JP
- Japan
- Prior art keywords
- plates
- cooling
- upper limit
- lower limit
- hot rolling
- 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
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 Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To obtain an abrasion resistant steel plate of fine crystal grains and superior toughness by hot rolling a slab to intermediate thickness steel plates and carburizing these with the carburizers interposed between the plates then hot rolling down to product sizes and hardening the plates under specific conditions. CONSTITUTION:Continuously cast or bloomed slabs are hot-rolled to intermediate thickness steel plates, and plural sheets are superposed means of carburizers added with accelerators. The spaces between the opposite surfaces are hermetically closed with fire bricks, etc. These are heated for 5-15hr at 900-1,300 deg.C in a furnace, whereby the plates carburized on one or both surfaces are obtained. Following this, these are subjected to secondary hot rolling down to product sizes, after which they are immediately cooled down to 600-400 deg.C at >=30 deg.C/sec cooling rate, and are thereafter slowly cooled. Here, if the carburizing temp. is below the lower limit, a long time is required, and above the upper limit, the formation of coarse crystal grains occurs. The carburization time below the lower limit leads to insufficient carburization depth and that at the upper limit to the saturation of effect. In secondary rolling, the structure is made much finer, and the toughness better. The surface hardness is much improved by the cooling. The cooling temp. in excess of the upper limit results in imperfectly hardened structure and that below the lower limit in insufficient slow cooling owing to tempering effect.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13701380A JPS5763637A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate for abrasion resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13701380A JPS5763637A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate for abrasion resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5763637A true JPS5763637A (en) | 1982-04-17 |
Family
ID=15188771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13701380A Pending JPS5763637A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate for abrasion resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5763637A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6883895B2 (en) | 1996-02-13 | 2005-04-26 | Canon Kabushiki Kaisha | Liquid ejection apparatus, head unit and ink-jet cartridge |
CN105108077A (en) * | 2015-07-23 | 2015-12-02 | 柳州市众力金铭热处理有限公司 | Method for machining abrasion-resisting steel bar for quartz sand bar mill |
-
1980
- 1980-09-30 JP JP13701380A patent/JPS5763637A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6883895B2 (en) | 1996-02-13 | 2005-04-26 | Canon Kabushiki Kaisha | Liquid ejection apparatus, head unit and ink-jet cartridge |
CN105108077A (en) * | 2015-07-23 | 2015-12-02 | 柳州市众力金铭热处理有限公司 | Method for machining abrasion-resisting steel bar for quartz sand bar mill |
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