CN1521092A - Steel strapping - Google Patents
Steel strapping Download PDFInfo
- Publication number
- CN1521092A CN1521092A CNA031043127A CN03104312A CN1521092A CN 1521092 A CN1521092 A CN 1521092A CN A031043127 A CNA031043127 A CN A031043127A CN 03104312 A CN03104312 A CN 03104312A CN 1521092 A CN1521092 A CN 1521092A
- Authority
- CN
- China
- Prior art keywords
- steel
- strapping
- composition
- steel strapping
- hot
- 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
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention relates to wrapping steel tape and its production process. The wrapping steel tape has microscopic structure including cold processed annealed ferrite matrix containing martensite and dispersive carbon compound, and its material consists of: C not more than 0.2 wt%, Mn not more than 2.0 wt%, Si 0.2-0.4 wt%, Ti 0.025-0.045 wt%, V 0.05-0.07, Cr not more than 0.25 wt%, Ni not more than 0.30, Mo not more than 0.10 wt%, N not more than 0.005 wt%, Cu not more than 0.20 wt%, Al not more than 0.08, Nb not more than 0.005 wt%, P not more than 0.035 and S not more than 0.020 wt% except Fe and impurities.
Description
Technical field
The present invention relates to Steel strapping.
Background technology
Steel strapping cuts into the width that needs by cold-rolled strip and forms, and it is used for the application of a series of performances of multiple needs.Usually, the performance that must consider when producing Steel strapping is a pulling strengrth, ductility, otch performance and work hardening.These performances depend on the composition of steel and put on the Technology for Heating Processing of steel band.
The minimum tensile strength of Steel strapping is between 500 to 1250Mpa.
Applicant's produce and market is with Apex Plus
TMBe the Steel strapping of trade name, its pulling strengrth is in the 500-800Mpa scope.
Applicant's produce and market is with Magnus
TMBe the Steel strapping of trade name, its pulling strengrth surpasses 800Mpa.
Apex Plus
TMSteel strapping is formed by dead-soft steel usually, can cold rollingly use with cutting form, does not need heat treatment in the application of the suitable strength level of needs, is for example obtaining card board to supporting plate.In some cases, Apex Plus
TMSteel strapping is formed by medium-carbon steel, needs in order to improve ductility to handle or the heat treatment of turning blue through stress relieving annealing.
Magnus
TMSteel strapping is formed by medium-carbon steel usually, and this Steel strapping needs to provide required performance through heat treatment.Magnus
TMSteel strapping is used for the load-carrying application scenario of needs to high pulling strengrth and good ductility, cutting property and work hardening.Use comprises ties up bunchy with steel pipe, and plate is tightened in heavy duty, and comprises hair and cotton high density packing.
Magnus
TMThe basic production stage of Steel strapping is as follows:
A) hot rolling steel billet forms steel band;
B) cold-rolled strip is to required thickness of strips;
C) cutting steel band slivering;
D) the heat treatment steel band is to produce target mechanical characteristics and micromechanism.
US Patent 4,816,090 has disclosed a kind of steel band Technology for Heating Processing, comprising:
A) use high-frequency heating, to the two-phase range of temperatures and the slightly soaking insulation or do not carry out soaking and be incubated of Fast Heating steel band;
B) quick cooling steel band forms a kind of this micromechanism, and micromechanism comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix.
Used term " two-phase " is interpreted as in district's austenite phase and the ferritic phase coexistence of balancing each other in the specification sheets.
This US Patent has disclosed a kind of heat treated steel strapping, it is characterized in that, its micromechanism comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix.
This US Patent discloses, and the composition of steel preferably includes the carbon that is less than 0.2wt%, it is characterized in that adding alloying element, and the latter forms accretion, delays crystallization again in heat treatment process.
This US Patent discloses, and titanium and niobium are first-selected alloying elements.
This US Patent discloses, and titanium can be 0.06-0.15wt%, is preferably 0.08wt%, and niobium can be 0.02-0.05wt%, preferably is about 0.04wt%.
The Steel strapping that this US Patent disclosed forms steel band in the commercial manufacturing of Australia by hot rolling steel billet, and it is thick typically to be 2.0mm, cold-rolled strip, typically arrive the final steel tape thickness of 0.8mm, the slivering of cutting steel band uses the high-frequency heating unit with steel band heat treatment then.
Met with serious problem in hot-rolled step, consequently yield rate is very low.
Now definite, this problem is because the titanium in the steel produces due to the inconsistent crystallization behavior again in hot-rolling mill (hot strip mill).
Titanium is a kind of important element during steel is formed.The important of titanium is that as mentioned above, these accretions delay crystallization again in heat treatment process because it forms the accretion of titanium carbide.This causes sizable cool working confining force in micromechanism with the rapid thermal cycles in heat treatment process, and this causes the substantial role for Steel strapping intensity.
As previously mentioned, this US Patent discloses, and the scope of titanium is from 0.06%-0.15wt%.When hot rolled steel institute titaniferous concentration is that 0.065wt% prescribes a time limit under the described scope of convergence, just run into serious hot rolling problem.This steel hereinafter is called XAK15 feed steel.
From steel band is formed, reduce or remove titanium fully, though overcome the hot-rolling mill problem, can to the mechanical characteristics of steel band particularly pulling strengrth great adverse effect is arranged.
Summary of the invention
According to a first aspect of the present invention, provide to have the Steel strapping that following percentage by weight is formed, its micromechanism comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix:
C：????????????≤0.2
Mn：???????????≤2.0
Si：???????????0.2-0.4
Ti：???????????0.025-0.045
V：????????????0.05-0.07
Cr：???????????≤0.25
Ni：???????????≤0.30
Mo：???????????≤0.10
N：????????????≤0.005
Cu：???????????≤0.20
Al：???????????≤0.08
Nb：???????????≤0.005
P：????????????≤0.035
S：????????????≤0.020
Surplus: iron and subsidiary impurity
Specifically, the composition of having found above-mentioned steel can not run into the serious hot rolling problem that sees XAK15 feed steel.
Also find, from the Steel strapping of above-mentioned steel compositions manufacturing, have at least with from the made comparable mechanical characteristics of Steel strapping of XAK15 feed steel, as pulling strengrth.
Particularly, find by hot rolling, cold rolling, the heat treated steel composite forms and comprises cool working recovery annealing ferrite matrix (this double carbide comprises martensite) and the micromechanism that spreads all over the diffusion carbide of matrix then, and made Steel strapping can obtain comparable at least mechanical characteristics.
It is believed that the titanium concentration (comparing with titanium concentration in the XAK15 feed steel) that adds in steel compositions in vanadium and the minimizing composite has prevented the problem of hot rolling formability in hot-rolling mill, the adding of vanadium also causes good mechanical characteristics.Particularly, to make in hot-rolling mill (particularly in every hot-rolling mill) can reach the crystallization again of steel consistent in the minimizing that it is believed that the adding of vanadium and titanium concentration.
Preferably, micromechanism comprises≤carbide metal of 15vol%.
Preferably, micromechanism comprises the 5-10vol% martensite.
Preferably, the concentration of titanium is 0.03-0.04wt% in the composite.
Preferably, the concentration of manganese is 0.8-1.2wt% in the composite.
Preferably, the concentration of aluminium is 0.015-0.08wt% in the composite.
Preferably, the pulling strengrth of Steel strapping is at least 900Mpa.
Preferably, the pulling strengrth of Steel strapping is at least 1000Mpa.
In addition, according to another aspect of the present invention, provide the method for making Steel strapping, comprised the steps:
A) a series of mill stands of steel billet by hot-rolling mill are come hot rolling steel billet, the thickness that reduces steel billet is to form steel band;
B) cold-rolled strip in cold rolling machine, the thickness of minimizing steel band; And
C) the heat treatment steel band to be producing Steel strapping,
The method is characterized in that by selecting the composition of hot-rolled condition and steel billet, in each support of hot-rolling mill, produce the crystallization again of steel like this.
Said method is based on the recognition, promptly by guaranteeing the crystallization again of at least some steel in each support, and can be on the basis of unanimity, high yield ground produces the hot rolled steel with required mechanical characteristics.
Preferred heat treatment step (c) comprising:
I) use high-frequency heating, steel band is heated to the two-phase range of temperatures fast and slightly soaking insulation or do not carry out the soaking insulation;
Ii) quick cooling steel band.
Preferably, this method is produced Steel strapping, and its micromechanism comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix.
Preferably, this method further is included in the step of the preceding vertical cutting cold-rolled strip of heat treatment step (c).
The composition of aforesaid steel is suitable for using in said method.
The specific embodiment
First-selected Steel strapping is formed and the method for making this Steel strapping is summarized below.
1 steel-making
1.1 table 1-composition of steel is analyzed
| ?C | ?0.15-0.19 |
| ?P | ?0.35X |
| ?Mn | ?0.80-1.20 |
| ?Si | ?0.35X |
| ?S | ?0.020X |
| ?Ni | ?0.30X |
| ?Cr | ?0.25X |
| ?Mo | ?0.10X |
| ?Cu | ?0.20X |
| ?Al | ?0.015-0.080 |
| ?Sn | ?0.050X |
| ?N | ?0.005X |
| ?NB | ?0.005X |
| ?Ti | ?0.025-0.045 |
| ?V | ?0.050-0.070 |
2 hot rollings
2.1 billet bloom size-hot-rolling mill (Hot Strip Mill) is received
230 millimeters thickness * 1025 millimeter width * 11.65 meters length steel billets heavily are about 21.5 tons
2.2 hot-rolling mill running temperature
Outlet reheating furnace: 1250 ℃
Hot-rolling mill is finished temperature: 900 ℃
Band is around rolling up temperature: 570 ℃
Torrid zone thickness: 2.0 millimeters
2.3 hot rolling structure
The hot rolling micromechanism comprises small axle double carbide such as grade and pearlitic matrix/bainite.
2.4 mechanical characteristics
The mechanical characteristics of the introducing feed after the hot rolling (induction feed) is as follows:
Ultimate tensile strength (MPa) typically is 600-650Mpa
Hardness typically is 55-S7RA
Extend and typically be 20% (SOmm)
3 pickling lines
Before pickling, provide actv. titanium formula (0.020 the minimum value of %Ti-3.4 * %N).
The input width of steel band is 960 millimeters, cut edge to reduce width to 944 millimeter.
4 is cold rolling
4.1 charging
With 2.0 millimeters thick, be cold-rolled to 0.805 millimeter thickness through the winding of hot rolling, pickling and immersion oil.
4.2 micromechanism
60% reduction that thickness is from 2.0 to 0.80 millimeters causes having the micromechanism of fine debris carbide metal degree of depth cool working ferrite matrix.
4.3 mechanical characteristics
60% cold minimizing and micromechanism causes steel band to have following representative type mechanical characteristics:
Ultimate tensile strength (MPa): 1000-1050Mpa
Disruptive force (KN): 16KN
Hardness: 65RA
Extend (50 millimeters): 4%
Crooked test (180deg): 7
5 cuttings
Subsequently, steel band is cut into the final product Steel strapping that the representative type width is the 12-32 millimeter.
6. Steel strapping operating line
6.1 operating line condition
Operation induction operating line makes steel band be heated rapidly to 750 ℃, keeps two seconds of this temperature, then steel band is cooled fast to ambient temperature.
6.2 mechanical characteristics
Above-mentioned tempering is learned the combination that composition, the cold rolling structure of introducing and high-frequency heating are handled, and causes following representative type mechanical characteristics:
Ultimate tensile strength: 970-1070Mpa
Disruptive force: 15.5KN
% extends: 10-14% (50 millimeters)
Hardness: 65-67HRA
Crooked test (180deg): 13
The applicant to the Steel strapping produced as mentioned above with under identical general technology condition, test from the Steel strapping of XAK15 material steel production.
The result that obtains shows, for making Steel strapping, is better than XAK15 material steel as the composition of steel in the tabulation 1 of preceding institute, and this is owing to compare with the XAK15 steel, improves hot easy formability greatly.
In addition, the result of test job shows, compares with the Steel strapping that comes from XAK15 from the Steel strapping of table 1 composite manufacturing to have higher (typically being 5%) pulling strengrth.
And the result of test job shows, from the pulling strengrth of the Steel strapping of table 1 composite manufacturing with compare with the pulling strengrth that Steel strapping obtained that derives from XAK15, consistent more, promptly the deviation between each test result is littler.
In addition, the result of test job shows, compares with the Steel strapping that derives from XAK15 from the Steel strapping of table 1 composition manufacturing, has higher ductility (typically being 1%).
Many modifications be can make for aforesaid the preferred embodiments of the present invention, and flesh and blood of the present invention and protection domain do not deviated from.
Claims (16)
1, a kind of Steel strapping has following percentage by weight and forms, and its micromechanism comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix:
C：?????????≤0.2
Mn：????????≤2.0
Si：????????0.2-0.4
Ti：????????0.025-0.045
V：?????????0.05-0.07
Cr：????????≤0.25
Ni：????????≤0.30
Mo：????????≤0.10
N：?????????≤0.005
Cu：????????≤0.20
Al：????????≤0.08
Nb：????????≤0.005
P：?????????≤0.035
S：?????????≤0.020
Surplus: iron and subsidiary impurity.
2, Steel strapping as claimed in claim 1, wherein said micromechanism comprise≤carbide metal of 15vol%.
3, Steel strapping as claimed in claim 2, wherein said micromechanism comprises the 5-10vol% martensite.
4, Steel strapping as claimed in claim 1 is characterized in that, the titanium concentration in the described composition is 0.03-0.04wt%.
5, Steel strapping as claimed in claim 1, the manganese concentration in the wherein said composition is 0.8-1.2wt%.
6, Steel strapping as claimed in claim 1, the aluminum concentration in the wherein said composition are 0.015-0.08wt%.
7, Steel strapping as claimed in claim 1 is characterized in that, the pulling strengrth of described Steel strapping is at least 900Mpa.
8, Steel strapping as claimed in claim 7, the pulling strengrth of wherein said Steel strapping is at least 1000Mpa.
9, a kind of method of making Steel strapping comprises the steps:
A) make steel billet come hot rolling steel billet by a series of mill stands of hot-rolling mill, the thickness that reduces steel billet is to form steel band;
B) cold-rolled strip in cold rolling machine, the thickness of minimizing steel band; And
C) the heat treatment steel band to be producing Steel strapping,
The method is characterized in that by selecting the composition of hot-rolled condition and steel billet the crystallization again of steel is arranged like this in each support of hot-rolling mill.
10, method as claimed in claim 9, wherein said heat treatment step c) comprising:
I) use high-frequency heating, steel band is heated to the two-phase range of temperatures fast and slightly soaking insulation or do not carry out the soaking insulation;
Ii) quick cooling steel band.
11, method as claimed in claim 9 comprises the cool working recovery annealing ferrite matrix that contains martensite and spreads all over the diffusion carbide of matrix with its micromechanism of Steel strapping of described method manufacturing.
12, method as claimed in claim 9 wherein also is included in the step of the vertical cutting cold-rolled strip before the heat treatment step.
13, method as claimed in claim 9, expect that wherein steel has following wt% and forms:
C：??????????≤0.2
Mn：?????????≤2.0
Si：?????????0.2-0.4
Ti：?????????0.025-0.045
V：??????????0.05-0.07
Cr：?????????≤0.25
Ni：?????????≤0.30
Mo：?????????≤0.10
N：??????????≤0.005
Cu：?????????≤0.20
Al：??????????≤0.08
Nb：??????????≤0.005
P：???????????≤0.035
S：???????????≤0.020
Surplus: iron and subsidiary impurity.
14, method as claimed in claim 13, the concentration of titanium is 0.03-0.04wt% in the wherein said composition.
15, method as claimed in claim 13, the concentration of manganese is 0.8-1.2wt% in the wherein said composition.
16, method as claimed in claim 13, the concentration of aluminium is 0.015-0.08wt% in the wherein said composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104312 CN1270942C (en) | 2003-01-30 | 2003-01-30 | Steel strapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104312 CN1270942C (en) | 2003-01-30 | 2003-01-30 | Steel strapping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521092A true CN1521092A (en) | 2004-08-18 |
| CN1270942C CN1270942C (en) | 2006-08-23 |
Family
ID=34282202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03104312 Expired - Fee Related CN1270942C (en) | 2003-01-30 | 2003-01-30 | Steel strapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270942C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914724A (en) * | 2010-09-02 | 2010-12-15 | 唐山国丰钢铁有限公司 | Substrate for strapping band |
| CN103361546A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Ultra-high strength binding belt raw plate and manufacturing method thereof |
| CN106282818A (en) * | 2015-06-05 | 2017-01-04 | 上海梅山钢铁股份有限公司 | The cold rolling coil of tensile strength 980MPa level tie steel and manufacture method thereof |
| CN118441216A (en) * | 2024-04-25 | 2024-08-06 | 包头钢铁（集团）有限责任公司 | Steel with strength of more than 1000MPa and used as raw material of high-strength packing belt and production method thereof |
| WO2026064382A1 (en) * | 2024-09-17 | 2026-03-26 | Signode Industrial Group Llc | Steel strapping and methods of use |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757532B (en) * | 2014-01-24 | 2016-07-27 | 宝山钢铁股份有限公司 | The high-strength tie of thin strap continuous casting economy of tensile strength >=980MPa and manufacture method thereof |
| CN103774041B (en) * | 2014-01-24 | 2016-08-24 | 宝山钢铁股份有限公司 | The high-strength tie of thin strap continuous casting economy of tensile strength >=1100MPa and manufacture method thereof |
-
2003
- 2003-01-30 CN CN 03104312 patent/CN1270942C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914724A (en) * | 2010-09-02 | 2010-12-15 | 唐山国丰钢铁有限公司 | Substrate for strapping band |
| CN101914724B (en) * | 2010-09-02 | 2013-03-20 | 唐山国丰钢铁有限公司 | Substrate for strapping band and production method thereof |
| CN103361546A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Ultra-high strength binding belt raw plate and manufacturing method thereof |
| CN106282818A (en) * | 2015-06-05 | 2017-01-04 | 上海梅山钢铁股份有限公司 | The cold rolling coil of tensile strength 980MPa level tie steel and manufacture method thereof |
| CN106282818B (en) * | 2015-06-05 | 2019-02-05 | 上海梅山钢铁股份有限公司 | The cold rolling coil that 980MPa grades of tensile strength banding steel and its manufacturing method |
| CN118441216A (en) * | 2024-04-25 | 2024-08-06 | 包头钢铁（集团）有限责任公司 | Steel with strength of more than 1000MPa and used as raw material of high-strength packing belt and production method thereof |
| WO2026064382A1 (en) * | 2024-09-17 | 2026-03-26 | Signode Industrial Group Llc | Steel strapping and methods of use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270942C (en) | 2006-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1124358C (en) | High-strength hot-dip galvanized steel sheet excellent in workability and zinc platability and manufacturing method thereof | |
| JP5365312B2 (en) | Steel plate for high-strength can and manufacturing method thereof | |
| CN1083903C (en) | High-strength high-workability cold rolled steel sheet having excellent impact resistance | |
| CN1088117C (en) | Steel material having high ductility and high strength and process for producing same | |
| JP5277648B2 (en) | High strength steel sheet with excellent delayed fracture resistance and method for producing the same | |
| CN1049927C (en) | Method for making steel plate with good working performence | |
| CN1172017C (en) | A ferritic stainless steel plate with good processability and its manufacturing method | |
| JP5277672B2 (en) | High strength steel plate with excellent delayed fracture resistance and method for producing the same | |
| CN1540026A (en) | Austenitic stainless steel | |
| JP5277658B2 (en) | Manufacturing method of hot press member | |
| JP4529549B2 (en) | Manufacturing method of high-strength cold-rolled steel sheets with excellent ductility and hole-expansion workability | |
| CN101045974A (en) | Manufacturing method for pressing-bend cool-forming round steel pipe with excellent shake proof property | |
| CN1298869C (en) | Method for manufacturing strip or workpiece cut from strip of cold-rolled maraging steel | |
| CN1380911A (en) | Non-refined steel being reduced in anisotropy of material and excellent in strength, toughness and machinability, and its making method | |
| CN102400037B (en) | Steel strip for ultrahigh-strength packaging and preparation method thereof | |
| CN1270942C (en) | Steel strapping | |
| KR101449111B1 (en) | Steel wire rod having excellent strength and ductility and method for manufacturing the same | |
| JP2000256795A (en) | Continuous cast slab without surface cracks and method for producing non-heat treated high strength steel using this slab | |
| US6635127B2 (en) | Steel strapping and method of making | |
| JP5280795B2 (en) | Method for producing high-strength cold-rolled steel sheet with excellent mechanical property stability | |
| CN108350550B (en) | High-strength cold-rolled steel sheet having excellent shear workability and method for producing same | |
| JP6645638B1 (en) | Steel for bolts | |
| JP5266804B2 (en) | Method for producing rolled non-heat treated steel | |
| JP2004307932A (en) | Method for manufacturing bolt steel and bolt with excellent delayed fracture resistance | |
| RU2346060C2 (en) | Method of blades manufacturing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060823 Termination date: 20120130 |