CN1184718A - Process for producing steel wire being used to produce tyre steel cord - Google Patents
Process for producing steel wire being used to produce tyre steel cord Download PDFInfo
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- CN1184718A CN1184718A CN96114630A CN96114630A CN1184718A CN 1184718 A CN1184718 A CN 1184718A CN 96114630 A CN96114630 A CN 96114630A CN 96114630 A CN96114630 A CN 96114630A CN 1184718 A CN1184718 A CN 1184718A
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- cooled
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- wire rod
- steel cord
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Abstract
The invented technology includes deoxygenation in smelting and cooling control in rolling. No.6 alloy of RE, Mg and Si is used as final deoxidant, the quantity of which is 0.15-0.35% of molten steel, after rolling, the steel wire rod is water cooled and air cooled, the water flow is 1.5-3.0 cubic meter per min, and the cooled air flow is 7000-14000 cubic meter per min., the cooling velocity is 3-10 deg. C per second. The quality of steel wire rod is enhanced by the invented technology.
Description
The invention belongs to a kind of production technology of new type steel, be specifically related to all-steel cord wire rod production technology, comprise in the smelting deoxidization technique and rolling in cooling control technology.
The all-steel cord steel is a special-purpose steel grade of producing all-steel cord, and this all-steel cord is an important source material of making the steel wire radial-ply tyre.It is directly to be the filament that the wire rod of 5.5 millimeters of is drawn to 0.15～0.38 millimeter of with general line, and plying forms at last.Because this cord will be drawn into superfine steel wire by wire rod, steel wire stands to reverse at a high speed the harshness test of plying again, thereby requires the all-steel cord steel, and steel is pure, has good drawing and plying performance.All-steel cord also is the steel grade of developing energetically both at home and abroad with steel at present.Patent had the report of this class steel grade both at home and abroad.For example: JP05177245 discloses a kind of " the all-steel cord manufacturing process of high-strength and high-ductility filament ", control phosphorus content, hot rolling forging stock obtained to be drawn into the middle silk of 1.8mm after wire rod, wire rod drawing, the heat treatment, to heat-treat and be drawn at last desired filament then when it had specifically introduced composition, the continuous-casting of steel billet of this steel, and this patent not have to put down in writing smelting deoxidation and the rolling wire rod cooling control technology about this kind steel.Other patent does not have relevant report yet.EP-359279 discloses a kind of cooling of gren rod, and it is to adopt the Stevr control cold process of rubbing, and cooling velocity is 10～100 ℃/s, but can make steel form not only hard but also crisp martensitic structure for this high speed cooling means of this high-carbon steel of all-steel cord.Therefore this method also is unsuitable for the rolling cooling control technology of all-steel cord steel wire rod.
The objective of the invention is according to the characteristics of all-steel cord with steel, the production technology of a kind of all-steel cord with wire rod is provided, comprising the deoxidization technique in smelting and rolling in cooling control technology, the purity of steel and interior tissue are improved, thereby more can satisfy the performance requirement of steel wire curtain silk with steel.
Deoxidization technique in the smelting of the present invention is to realize like this, adopt No. 6 alloys based on RE, Mg and Si as end-deoxidizer to the all-steel cord steel of existing converter smelting, the composition of its No. 6 alloys (wt%) is RE=7.0～11.0, Mg=6.0～12.0, Si=40.0～50.0, Ca=1.0～3.0, all the other are Fe, No. 6 alloy additions are 0.15～0.35% of molten steel weight, owing to do not contain Al in this deoxidier, make that aluminium content reduces greatly in the steel, its content (wt%) is less than 0.005%, Al
2O
3Particulate Inclusion is less than 4.5 μ m.
The present invention is achieved in that with the rolling cooling control technology of wire rod this technology is that wire rod rolls the back and adds air-cooledly with water-cooled to all-steel cord, carries out water-cooled earlier, and by the suitable regulating pondage of finishing temperature, the normal-temperature water flow is 1.5～3.0m
3/ min makes laying temperature be controlled at 880～920 ℃; The laggard sector-style of water-cooled is cold, suitably regulates air quantity, and the normal temperature wind flow is 7000～14000m
3/ min makes the wire rod cooling velocity be controlled at 3～10 ℃/s.Owing to adopt this special technology, make the austenite after the rolling wire rod water-cooled that bigger degree of supercooling be arranged, increase it and changed pearlitic nucleation rate into, thus refine pearlite; Again because its fastest air-cooled speed of control less than 10 ℃/s, form not only hard but also crisp martensitic structure in the time of can avoiding austenite to change, and the slowest air-cooled speed is controlled at greater than 3 ℃/s, can make again and not generate more weak ferrite when changing.Thereby make the rolling back of wire rod interior tissue obtain sorbite completely.Wire rod tensile strength after this processing of process is about 1050MPa.
The present invention makes all-steel cord be purified from steel with wire rod by the all-steel cord steel wire rod is adopted new smelting and rolling mill practice, improves from tissue, thereby has improved the quality of all-steel cord with wire rod.
Introduce several embodiment below:
With composition (wt%) is C0.69～0.75; Si0.12～0.30; Mn0.40～0.70; P≤0.030; S≤0.030; Cr≤0.06; Ni≤0.1; Cu≤0.10; The all-steel cord steel of N≤0.010 is an example, during smelting, when liquid steel temperature is below 1650 ℃ the time, No. 6 alloy additions be molten steel weight 0.15～0.20% as end-deoxidizer.
With composition (wt%) is C0.69～0.75; Si0.12～0.30; Mn0.40～0.70; P≤0.030; S≤0.030; Cr≤0.06; Ni≤0.1; Cu≤0.10; The all-steel cord steel of N≤0.010 is an example, during smelting, when liquid steel temperature is 1650～1670 ℃, No. 6 alloy additions be molten steel weight 0.20～0.25% as end-deoxidizer.
With composition (wt%) is C0.69～0.75; Si0.12～0.30; Mn0.40～0.70; P≤0.030; S≤0.030; Cr≤0.06; Ni≤0.1; Cu≤0.10; The all-steel cord steel of N≤0.010 is an example, during smelting, when liquid steel temperature is more than 1670 ℃ the time, No. 6 alloy additions be molten steel weight 0.25～0.35% as end-deoxidizer.
With the steel of the foregoing description melting, be rolled into and adopt behind the wire rod water-cooled to add air-cooled technology, the normal-temperature water flow during its water-cooled is 1.5～2.0m
3/ min, air-cooled normal temperature air quantity is 12000～14000m after the water-cooled
3/ min.
With the steel of the foregoing description melting, be rolled into and adopt behind the wire rod water-cooled to add air-cooled technology, the normal-temperature water flow during its water-cooled is 2.0～2.5m
3/ min, air-cooled normal temperature air quantity is 9000～12000m after the water-cooled
3/ min.
With the steel of the foregoing description melting, be rolled into and adopt behind the wire rod water-cooled to add air-cooled technology, the normal-temperature water flow during its water-cooled is 2.5～3.0m
3/ min, air-cooled normal temperature air quantity is 7000～9000m after the water-cooled
3/ min.
The all-steel cord wire rod that adopts the foregoing description to produce, steel is pure, Al in the steel
T≤ 0.001%; Al
2O
3Particulate Inclusion≤2.5 μ m, [O]≤0.0018%, it is A0.5 that 5.5 wire rod metallographics are mingled with by GB10560-89ASTM grading figure rating result, B0.5, the σ of wire rod
b=1050 ± 100MPa is organized as uniformly thin sorbite.The all-steel cord made from the filament of this wire rod drawing reaches international most advanced level.
Claims (7)
1. the production technology of an all-steel cord usefulness wire rod comprises and smelting and rolling mill practice, it is characterized in that:
A. all-steel cord steel employing RE, Mg and the Si to converter smelting is the deoxidization technique that No. 6 main alloys are done end-deoxidizer, its No. 6 alloying components (wt%) are RE=7.0～11.0, Mg=6.0～12.0, Si=40.0～50.0, Ca=1.0～3.0, all the other are Fe, and its addition is 0.15～0.35% of a molten steel weight
B. adopt water-cooled to add air-cooled cooling control technology to the rolling back of all-steel cord steel wire rod, carry out water-cooled earlier, by the suitable regulating pondage of finishing temperature, the normal-temperature water flow is 1.5～3.0m
3/ min makes laying temperature be controlled at 880～920 ℃, and the laggard sector-style of water-cooled is cold, suitably regulates air quantity, and the normal temperature air quantity is 7000～14000m
3/ min makes the wire rod cooling velocity be controlled at 3～10 ℃/s.
2. all-steel cord according to claim 1 is with the production technology of wire rod, it is characterized in that when liquid steel temperature be below 1650 ℃ the time, No. 6 alloy additions are 0.15～0.20% of molten steel weight.
3. all-steel cord according to claim 1 is characterized in that with the production technology of wire rod No. 6 alloy additions are 0.20～0.25% of molten steel weight when liquid steel temperature is 1650～1670 ℃.
4. all-steel cord according to claim 1 is with the production technology of wire rod, it is characterized in that when liquid steel temperature be more than 1670 ℃ the time, No. 6 alloy additions are 0.25～0.35% of molten steel weight.
5. the all-steel cord according to claim 1 production technology of wire rod, the normal-temperature water flow when it is characterized in that all-steel cord with the rolling back of wire rod water-cooled is 1.5～2.0m
3/ min, air-cooled normal temperature air quantity is 12000～14000m after the water-cooled
3/ min.
6. the all-steel cord according to claim 1 production technology of wire rod, the normal-temperature water flow when it is characterized in that all-steel cord with the rolling back of wire rod water-cooled is 2.0～2.5m
3/ min, air-cooled normal temperature air quantity is 9000～12000m after the water-cooled
3/ min.
7. the all-steel cord according to claim 1 production technology of wire rod, the normal-temperature water flow when it is characterized in that all-steel cord with the rolling back of wire rod water-cooled is 2.5～3.0m
3/ min, air-cooled normal temperature air quantity is 7000～9000m after the water-cooled
3/ min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96114630A CN1184718A (en) | 1996-12-10 | 1996-12-10 | Process for producing steel wire being used to produce tyre steel cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96114630A CN1184718A (en) | 1996-12-10 | 1996-12-10 | Process for producing steel wire being used to produce tyre steel cord |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1184718A true CN1184718A (en) | 1998-06-17 |
Family
ID=5122206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96114630A Pending CN1184718A (en) | 1996-12-10 | 1996-12-10 | Process for producing steel wire being used to produce tyre steel cord |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1184718A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355925C (en) * | 2004-11-17 | 2007-12-19 | 首钢总公司 | Micro-alloying production for 82B wire rod of steel strand |
| CN100435990C (en) * | 2004-11-17 | 2008-11-26 | 首钢总公司 | After-roll reinforced cooling process for 82B wire rod steel strand |
| CN100453194C (en) * | 2005-12-07 | 2009-01-21 | 首钢总公司 | Control cooling method of resolving self-break while producing high-carbon wire rod |
| CN102719651A (en) * | 2012-06-27 | 2012-10-10 | 贵州大学 | Rapid induction heating and air cooling heat treatment process for steel wire |
| CN107695095A (en) * | 2017-11-12 | 2018-02-16 | 湖南华菱湘潭钢铁有限公司 | The production method of environment-friendly type high-carbon wire rod iron scale |
| CN107855368A (en) * | 2017-10-24 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Cooling means after steel rolling |
-
1996
- 1996-12-10 CN CN96114630A patent/CN1184718A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355925C (en) * | 2004-11-17 | 2007-12-19 | 首钢总公司 | Micro-alloying production for 82B wire rod of steel strand |
| CN100435990C (en) * | 2004-11-17 | 2008-11-26 | 首钢总公司 | After-roll reinforced cooling process for 82B wire rod steel strand |
| CN100453194C (en) * | 2005-12-07 | 2009-01-21 | 首钢总公司 | Control cooling method of resolving self-break while producing high-carbon wire rod |
| CN102719651A (en) * | 2012-06-27 | 2012-10-10 | 贵州大学 | Rapid induction heating and air cooling heat treatment process for steel wire |
| CN107855368A (en) * | 2017-10-24 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Cooling means after steel rolling |
| CN107855368B (en) * | 2017-10-24 | 2020-04-14 | 芜湖新兴铸管有限责任公司 | Cooling method after steel rolling |
| CN107695095A (en) * | 2017-11-12 | 2018-02-16 | 湖南华菱湘潭钢铁有限公司 | The production method of environment-friendly type high-carbon wire rod iron scale |
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