CN105316581A - Wire rod for 90-grade ultrahigh-strength rubber tube steel wire and production method thereof - Google Patents
Wire rod for 90-grade ultrahigh-strength rubber tube steel wire and production method thereof Download PDFInfo
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- CN105316581A CN105316581A CN201410284080.8A CN201410284080A CN105316581A CN 105316581 A CN105316581 A CN 105316581A CN 201410284080 A CN201410284080 A CN 201410284080A CN 105316581 A CN105316581 A CN 105316581A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910000754 Wrought iron Inorganic materials 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 241001062472 Stokellia anisodon Species 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 238000009749 continuous casting Methods 0.000 claims description 2
- 238000007519 figuring Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 238000009941 weaving Methods 0.000 claims description 2
- 230000003749 cleanliness Effects 0.000 abstract description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 206010040844 Skin exfoliation Diseases 0.000 abstract 1
- 230000010485 coping Effects 0.000 abstract 1
- 238000005491 wire drawing Methods 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 description 8
- 239000011651 chromium Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910001567 cementite Inorganic materials 0.000 description 2
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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- Heat Treatment Of Steel (AREA)
Abstract
A wire rod for a 90-grade ultrahigh-strength rubber tube steel wire and a production method thereof are disclosed, wherein the wire rod comprises the following chemical components in percentage by weight: c: 0.88% -0.93%, Mn: 0.20-0.45%, Cr: 0.20-0.30%, Si: 0.20-0.40%, P is less than or equal to 0.010%, S is less than or equal to 0.010%, K: 0.0001 to 0.0010 percent, Mg: 0.0001 to 0.0010 percent, total oxygen: 0.0015 to 0.0025 percent, and the balance of iron and residual elements. The steel cleanliness is improved by controlling the K, Mg content; the surface quality of the rolled wire rod is improved by mechanically coping the surface of the steel billet at the surface temperature of 100 ℃; the easy-to-desquamation performance of the wire rod iron scale in the mechanical descaling process is improved by controlling the content of iron oxide in the iron scale. The wire rod produced by the method is used for manufacturing a rubber tube steel wire with the thickness of 0.40-0.75 mm, the wire breakage rate in the wire drawing process is not more than 0.1 time/ton, the fatigue life of the rubber tube manufactured by the steel wire exceeds 3 ten thousand times, and the use requirements of users can be completely met.
Description
Technical field
The invention belongs to metallurgical technology technical field, be specifically related to a kind of 90 grade super strength rubber tube wire wire rod and production methods thereof.
Background technology
Along with the development of high-pressure rubber pipe conveying material, the demand of user to superstrength sebific duct steel wire wire rod improves constantly.Wire rod for superstrength sebific duct Production for Steel Wire requires very high steel cleanliness factor, and segregation degree is low, has high surface quality and slight surface decarburization simultaneously.
At present, domestic high strength wire rod is mainly suspension cable and overarm rope galvanized steel wire wire rod.As application number " 200710045315.8 " provides a kind of 1670MPa level bridge stay cable and 1770MPa level bridge suspension cable galvanized steel wire wire rod, comprise following chemical element (wt%): C:0.8 ~ 0.85%, Si:0.12 ~ 0.32%, Mn:0.6 ~ 0.9%, P≤0.025%, S≤0.025%, Cr≤0.2%, V≤0.04%, Cu≤0.2%.Its wire rod adopts smelting, cast, breaking down, high speed wire rolling to produce.The production technique of high-speed rod is, rolled piece is 950 ± 25 DEG C in reducing-sizing mill inlet temperature, and laying temperature is 920 ± 20 DEG C.
Above-mentioned patent only describes chemical composition for suspension cable and overarm rope galvanized steel wire wire rod and production technique, introduces the chemical composition being used for 90 grade super strength rubber tube wire wire rods and production technique.Superstrength sebific duct steel wire, in application process, bears high-strength repeated stress.In order to prevent steel wire premature failure, inner quality and the surface quality of steel wire must be improved, therefore needing to study further in chemical composition, smelting and rolling technology, to meet the quality requirement of user.
Summary of the invention
Object of the present invention aims to provide a kind ofly has superstrength, wire broken rate is low, fatigue lifetime is high 90 grades of rubber tube wire wire rods and production method thereof.
For this reason, the solution that the present invention takes is:
A kind of 90 grade super strength rubber tube wire wire rods, its chemical composition wt% is: C:0.88% ~ 0.93%, Mn:0.20% ~ 0.45%, Cr:0.20% ~ 0.30%, Si:0.20% ~ 0.40%, P≤0.010%, S≤0.010%, K:0.0001% ~ 0.0010%, Mg:0.0001% ~ 0.0010%, total oxygen: 0.0015% ~ 0.0025%, all the other are iron and residual element.
The reason of chemical composition and content setting is as follows:
Carbon is the main strengthening element in steel, and carbon content is higher, and the tensile strength of wire rod and steel wire is larger.But too high carbon content causes wire rod to occur cementite network tissue in process of cooling.Therefore, in order to carbon content control in the strong rubber tube wire steel of production superelevation is 0.88 ~ 0.93%.
Manganese is also a kind of element improving wire rod intensity, and manganese element is comparatively serious in the segregation of process of setting, and therefore designing high strength rubber tube wire with in wire rod composition, suitably reduce wire rod Fe content, therefore in steel, Fe content controls 0.20 ~ 0.45%.
Chromium is a kind of element improving wire rod intensity, and this element also can improve the hardening capacity of wire rod, the tissue of refinement high-carbon steel wire rod, reduces sorbite sheet interlayer spacing, suppresses crystal boundary cementite to be separated out, improves the drawing property of wire rod.But too high chromium element will significantly improve wire rod tensile strength, reduce its drawing property.Therefore, in steel, chromium content controls 0.20 ~ 0.30%.
Silicon is the main deoxidant element of sebific duct wire rod smelting process.The low steel liquid deoxidation that will cause of silicone content is not enough; But it is thick that too high silicone content causes residual oxide in steel to be mingled with, unfavorable to the application performance of steel.Therefore, in steel, silicone content controls 0.20 ~ 0.40%.
Phosphorus sulphur is all detrimental impurity element in steel, requires wire rod [P]≤0.010%, [S]≤0.010%, when not causing other influences, more low better.
Total oxygen content in wire rod is the important indicator representing wire rod cleanliness factor.Lower wire rod total oxygen content is easy to the processing characteristics improving wire rod.But too low wire rod oxygen level is unfavorable for the improvement of inclusion deformability in wire rod, and therefore the total oxygen content of wire rod controls 0.0015 ~ 0.0025%.
Potassium, magnesium are strong deoxidant elements, and appropriate potassium, Mg content are conducive to the fusing point reducing oxide inclusion in wire rod, improve the deformability of inclusion, reduce inclusion size in wire rod, and therefore the potassium of wire rod, Mg content control 0.0001 ~ 0.0010%.
A production method for 90 grade super strength rubber tube wire wire rods, its concrete technology method is:
1, desulfurizing iron pre-treatment, converter smelting and LF refining:
Sulphur content in molten iron controls below 0.005% by desulfurizing iron pre-treatment; Converter adopts double slag process to smelt, and reduces molten steel phosphorus and potassium, Mg content, and smelting endpoint requires [P]≤0.010%, [K]≤0.0001%, [Mg]≤0.0002%, for final wire rod residual element control to lay the foundation.Converter terminal molten steel temperature controls at 1570 ~ 1670 DEG C, prevents molten steel temperature too low on the one hand, increases burden for later refining process improves molten steel temperature; In addition on the one hand, prevent molten steel temperature too high, cause molten steel peroxidation.LF refinery practice temperature controls at 1530 ~ 1590 DEG C, and time 50 ~ 120min both can prevent liquid steel refining deficiency of time, and steel inclusion can not float discharge molten steel, also prevents liquid steel refining overlong time, causes refractory corrosion serious, worsens steel.
2, continuous casting:
Casting process controls Metal in Tundish superheating temperature and is not more than 30 DEG C, and square billet cross dimensions is (200 ~ 400) × (300 ~ 500) mm.
3, tandem rolling and rod rolling:
First continuously cast bloom tandem rolling is become 155 × 155mm Concasting Bloom; Concasting Bloom send between grinding vehicle and carries out figuring of surface process, and before reconditioning, billet surface temperature is lower than 100 DEG C, and Concasting Bloom four sides reconditioning quality is 2 ~ 5mm; Wire production operation, billet heating temperature 1020 ~ 1100 DEG C, wire rod laying temperature is 890 ~ 950 DEG C, rolls out diameter 5.0 ~ 6.0mm wire rod; After weaving silk, wire rod speed of cooling controls at 20 ~ 30 DEG C/s, and after wire rod phase transformation, speed of cooling controls at 5 DEG C/below s, and the FeO content controlling wire rod iron scale is not less than 75%, Fe
2o
3content is not higher than 10%, and thickness of scale is not less than 10um.
Beneficial effect of the present invention is:
The present invention, by control K and Mg content, improves the deformability of steel inclusion, reduces inclusion size, improves steel cleanliness factor.By the billet surface machinery reconditioning of surface temperature under 100 DEG C of conditions, improve the surface quality of rod rolling raw material, and then improve the surface quality of wire rod.By controlling the oxide content of iron in wire rod iron scale, improve the easy deciduous of wire rod iron scale in mechanical descaling process.Therefore, by the 90 grade super strength rubber tube wire wire rods that the inventive method is produced, make 0.40 ~ 0.75mm rubber tube wire, drawing process wire broken rate is not more than 0.1 time/ton, after sebific duct made by steel wire, its fatigue lifetime is more than 30,000 times, can meet the service requirements of user completely.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Table 1 is embodiment chemical composition wt%.
Table 1 embodiment chemical composition wt%
| Embodiment | C，％ | Si，％ | Mn，％ | Cr，％ | P，％ | S，％ | K，％ | Total oxygen, % | Mg，％ |
| 1 | 0.88 | 0.22 | 0.21 | 0.21 | 0.0083 | 0.0034 | 0.0001 | 0.0017 | 0.0001 |
| 2 | 0.90 | 0.32 | 0.35 | 0.28 | 0.0075 | 0.0032 | 0.0005 | 0.0018 | 0.0002 |
| 3 | 0.92 | 0.35 | 0.45 | 0.24 | 0.0082 | 0.0065 | 0.0003 | 0.0021 | 0.0004 |
Table 2 is embodiment smelting and casting parameters table.
Table 2 embodiment is smelted and casting parameters table
Table 3 is embodiment rolling technological parameter table.
Table 3 embodiment rolling technological parameter table
Table 4 makes rubber tube wire performance for the wire rod that embodiment is produced.
The rubber tube wire performance that table 4 embodiment wire rod is made
| Embodiment | Wire broken rate, secondary/ton | Rubber tube wire fatigue lifetime, secondary |
| 1 | 0.2 | 35000 |
| 2 | 0.3 | 45000 |
| 3 | 0.1 | 40000 |
。
Claims (2)
1. a grade super strength rubber tube wire wire rod, it is characterized in that, its chemical composition wt% is: C:0.88% ~ 0.93%, Mn:0.20% ~ 0.45%, Cr:0.20% ~ 0.30%, Si:0.20% ~ 0.40%, P≤0.010%, S≤0.010%, K:0.0001% ~ 0.0010%, Mg:0.0001% ~ 0.0010%, total oxygen: 0.0015% ~ 0.0025%, all the other are iron and residual element.
2. a production method for 90 grade super strength rubber tube wire wire rods as claimed in claim 1, it is characterized in that, concrete technology method is:
(1) desulfurizing iron pre-treatment, converter smelting and LF refining:
Sulphur content in molten iron controls below 0.005% by desulfurizing iron pre-treatment; Converter adopts double slag process to smelt, and smelting endpoint requires [P]≤0.010%, [K]≤0.0001%, [Mg]≤0.0002%, and converter terminal molten steel temperature controls at 1570 ~ 1670 DEG C; LF refinery practice temperature controls at 1530 ~ 1590 DEG C, time 50 ~ 120min;
(2) continuous casting:
Casting process controls Metal in Tundish superheating temperature and is not more than 30 DEG C, and square billet cross dimensions is (200 ~ 400) × (300 ~ 500) mm;
(3) tandem rolling and rod rolling:
First continuously cast bloom tandem rolling is become 155 × 155mm Concasting Bloom; Concasting Bloom send between grinding vehicle and carries out figuring of surface process, and before reconditioning, billet surface temperature is lower than 100 DEG C, and Concasting Bloom four sides reconditioning quality is 2 ~ 5mm; Wire production operation, billet heating temperature 1020 ~ 1100 DEG C, wire rod laying temperature is 890 ~ 950 DEG C, rolls out diameter 5.0 ~ 6.0mm wire rod; After weaving silk, wire rod speed of cooling controls at 20 ~ 30 DEG C/s, and after wire rod phase transformation, speed of cooling controls at 5 DEG C/below s, and the FeO content controlling wire rod iron scale is not less than 75%, Fe
2o
3content is not higher than 10%, and thickness of scale is not less than 10um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410284080.8A CN105316581B (en) | 2014-06-23 | 2014-06-23 | Wire rod for 90-grade ultrahigh-strength rubber tube steel wire and production method thereof |
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| CN201410284080.8A CN105316581B (en) | 2014-06-23 | 2014-06-23 | Wire rod for 90-grade ultrahigh-strength rubber tube steel wire and production method thereof |
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| CN105316581A true CN105316581A (en) | 2016-02-10 |
| CN105316581B CN105316581B (en) | 2017-08-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170687A (en) * | 2015-08-26 | 2015-12-23 | 辽宁通达建材实业有限公司 | Prestressed steel strand production process without wire drawing |
| CN107937816A (en) * | 2017-11-30 | 2018-04-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing Ti builds steel wire rod and its production method |
| CN108456819A (en) * | 2018-01-25 | 2018-08-28 | 东北大学 | A kind of control method of hyperfine cutting wire steel inclusion plastification |
| CN109112246A (en) * | 2017-06-26 | 2019-01-01 | 鞍钢股份有限公司 | Production method of steel wire rod for railway elastic strip fastener formed by direct cold bending |
| CN109201732A (en) * | 2017-07-03 | 2019-01-15 | 河钢股份有限公司邯郸分公司 | The production method of the simple pickling wire rod of washing machine sunpender |
| CN109957711A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | Cord steel wire rod and production method thereof |
| CN115161559A (en) * | 2022-07-12 | 2022-10-11 | 鞍钢股份有限公司 | Torsion fracture resistant ultrahigh-strength steel wire, wire rod for steel wire and manufacturing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105170687A (en) * | 2015-08-26 | 2015-12-23 | 辽宁通达建材实业有限公司 | Prestressed steel strand production process without wire drawing |
| CN109112246A (en) * | 2017-06-26 | 2019-01-01 | 鞍钢股份有限公司 | Production method of steel wire rod for railway elastic strip fastener formed by direct cold bending |
| CN109201732A (en) * | 2017-07-03 | 2019-01-15 | 河钢股份有限公司邯郸分公司 | The production method of the simple pickling wire rod of washing machine sunpender |
| CN107937816A (en) * | 2017-11-30 | 2018-04-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing Ti builds steel wire rod and its production method |
| CN109957711A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | Cord steel wire rod and production method thereof |
| CN108456819A (en) * | 2018-01-25 | 2018-08-28 | 东北大学 | A kind of control method of hyperfine cutting wire steel inclusion plastification |
| CN115161559A (en) * | 2022-07-12 | 2022-10-11 | 鞍钢股份有限公司 | Torsion fracture resistant ultrahigh-strength steel wire, wire rod for steel wire and manufacturing process |
| CN115161559B (en) * | 2022-07-12 | 2024-04-16 | 鞍钢股份有限公司 | Torsion fracture resistant ultra-high strength steel wire, wire rod for steel wire and manufacturing process |
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