JPH048486B2 - - Google Patents
Info
- Publication number
- JPH048486B2 JPH048486B2 JP18007587A JP18007587A JPH048486B2 JP H048486 B2 JPH048486 B2 JP H048486B2 JP 18007587 A JP18007587 A JP 18007587A JP 18007587 A JP18007587 A JP 18007587A JP H048486 B2 JPH048486 B2 JP H048486B2
- Authority
- JP
- Japan
- Prior art keywords
- less
- toughness
- steel
- temperature
- sec
- 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.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 238000005096 rolling process Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 229910001563 bainite Inorganic materials 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 229910000734 martensite Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18007587A JPS6425918A (en) | 1987-07-21 | 1987-07-21 | Manufacture of reinforcing steel bar excellent in toughness at low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18007587A JPS6425918A (en) | 1987-07-21 | 1987-07-21 | Manufacture of reinforcing steel bar excellent in toughness at low temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6425918A JPS6425918A (en) | 1989-01-27 |
| JPH048486B2 true JPH048486B2 (enrdf_load_stackoverflow) | 1992-02-17 |
Family
ID=16077021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18007587A Granted JPS6425918A (en) | 1987-07-21 | 1987-07-21 | Manufacture of reinforcing steel bar excellent in toughness at low temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425918A (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4435954B2 (ja) | 1999-12-24 | 2010-03-24 | 新日本製鐵株式会社 | 冷間鍛造用棒線材とその製造方法 |
| JP4882259B2 (ja) * | 2005-03-30 | 2012-02-22 | Ｊｆｅスチール株式会社 | 耐塩害性に優れた鉄筋を有する水和硬化体 |
| JP2007320484A (ja) * | 2006-06-02 | 2007-12-13 | Fuji Heavy Ind Ltd | ドアサッシュのモール取付構造 |
| JP2008114725A (ja) * | 2006-11-06 | 2008-05-22 | Fuji Heavy Ind Ltd | 車両用ドアサッシュ構造 |
| CN101831586A (zh) * | 2010-04-30 | 2010-09-15 | 南京钢铁股份有限公司 | 一种低温韧性优异的低碳当量高强度厚钢板及制造方法 |
| CN104480410A (zh) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | 一种半灌浆式高强粗钢筋的配方 |
-
1987
- 1987-07-21 JP JP18007587A patent/JPS6425918A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6425918A (en) | 1989-01-27 |
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