CN102189122A - Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling - Google Patents
Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling Download PDFInfo
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- CN102189122A CN102189122A CN 201110091223 CN201110091223A CN102189122A CN 102189122 A CN102189122 A CN 102189122A CN 201110091223 CN201110091223 CN 201110091223 CN 201110091223 A CN201110091223 A CN 201110091223A CN 102189122 A CN102189122 A CN 102189122A
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Abstract
The invention discloses a method for controlling a process for cooling a hot-rolled ultra low carbon steel wire rod after rolling and belongs to the technical field of steel rolling. Spinning temperature is controlled to be 900 to 950 DEG C; the speed of a roller bed of a cooling section is reasonably adjusted, and distance between rings and the cooling speed are controlled by controlling the speed of the roller beds of all sections; and fans are all switched off, heat insulation covers are all opened, the grain size of ultra-low carbon steel wire rod ferrite is controlled to be 20 to 40 mu m, tertiary cementite content is less than or equal to 2 percent, tensile strength is less than or equal to 330 MPa, area reduction is more than or equal to 80 percent, and the performance difference of the same ring is less than or equal to 20 MPa. Processing and using efficiency of a user is greatly improved, the possibility of drawing brittle fracture is reduced, and yield and production efficiency are improved.
Description
Technical field
The invention belongs to technical field of steel rolling, particularly provide a kind of hot rolling ultra-low-carbon steel wire rod to roll back process for cooling control method, be mainly used in and produce the size hot-rolled ultra-low-carbon steel wire rod of ￠ 5.5～￠ 16mm.
Background technology
Hot rolling Ultra-low carbon wire rod is mainly used in processing and manufacturing communication and electronic information industry high-end goods such as coppered steel wire and zinc-coated wire.Require very high plasticity index, and have certain tensile strength and poker characteristic.This requires its wire rod to organize mainly is ferrite, and crystallite dimension is at 20～40 μ m, and tertiary cementite is few as far as possible, and the fluctuation of poker mechanical property is as far as possible little.
Laying temperature and the tissue and the performance of rolling back cooling velocity decision wire rod, so the core of whole cooling control after rolling technology is exactly under the prerequisite of reasonable control laying temperature, whether the unlatching of the roller table speed by regulating each section, blower fan aperture size, stay-warm case controls the cooldown rate of wire rod.The crystallite dimension of the height influence tissue of laying temperature, general laying temperature is low more, and crystal grain is thin more, and tensile strength is high more, and for hot rolling ultra-low-carbon steel wire rod, too high tensile strength can influence the loss of drawing effect and grinding tool.Roller table speed can change the layout density of wire rod on roller-way, thus the cooling rate of control wire rod.Whether can control the thermograde of wire rod surrounding atmosphere by the unlatching of stay-warm case, influence the cooldown rate of wire rod.In order to obtain suitable wire rod performance, should on laying temperature, roller table speed, stay-warm case open degree, make suitable coupling and adjusting.
Summary of the invention
The object of the present invention is to provide a kind of hot rolling ultra-low-carbon steel wire rod to roll back process for cooling control method.Under the prerequisite of the suitable laying temperature of control, system regulates each roller table speed of cold scattering section, blower fan and stay-warm case aperture, obtains good structure property.
The present invention adopts the cooling line traffic control cooling that rubs of standard Stevr, controls following technical parameter in cooling procedure:
Laying temperature is controlled at 900-950 ℃;
Rationally regulate the roller table speed of heat radiation cooling section, by controlling the roller table speed of each section, control circle spacing and cooling rate; The roller of each cooling section that dispels the heat is fast to be (unit: m/s):
0.36-0.38-0.39-0.40-0.43-0.44-0.46-0.50-0.50-0.50-0.50-0.50-0.50；
The blower fan Close All, stay-warm case is all opened, and controls ultra-low-carbon steel wire rod ferrite grain size at 20-40 μ m, tertiary cementite content≤2%, tensile strength≤330Mpa, reduction of area 〉=80% is with circle poor performance≤20Mpa.Improve user's processing service efficiency greatly, reduced drawing brittle failure probability, improved lumber recovery and production efficiency.
Description of drawings
Fig. 1 is a ultra-low-carbon steel SWRM6 wire rod tissue.
The specific embodiment
The present invention can adopt when high-speed wire factory is produced the ultra-low-carbon steel wire rod.
Adopt cooling control technology of the present invention, produce the SWRM6 wire rod of the ￠ 6.5mm specification that meets the demands at Shoudu Iron and Steel Co in batches.Laying temperature is controlled at 920 ± 20 ℃; Every section roller table speed of heat radiation cooling section (unit: m/s):
0.36-0.38-0.39-0.40-0.43-0.44-0.46-0.50-0.50-0.50-0.50-0.50-0.50；
The blower fan Close All, stay-warm case is all opened, and makes the wire rod cooling evenly.Control ultra-low-carbon steel wire rod ferrite grain size at 20-40 μ m, tertiary cementite content≤2%, tensile strength≤330Mpa, reduction of area 〉=80% is with circle poor performance≤20Mpa.Reach user and GB requirement, be used for high-end products such as processing welding wire.
Claims (1)
1. a hot rolling ultra-low-carbon steel wire rod rolls back process for cooling control method, adopts the standard Stevr to rub and cools off the line traffic control cooling, it is characterized in that: control following technical parameter in cooling procedure:
Laying temperature is controlled at 900-950 ℃;
Rationally regulate the roller table speed of heat radiation cooling section, by controlling the roller table speed of each section, control circle spacing and cooling rate; The roller speed of each cooling section that dispels the heat is: unit: m/s,
0.36-0.38-0.39-0.40-0.43-0.44-0.46-0.50-0.50-0.50-0.50-0.50-0.50；
The blower fan Close All, stay-warm case is all opened, and controls ultra-low-carbon steel wire rod ferrite grain size at 20-40 μ m, tertiary cementite content≤2%, tensile strength≤330Mpa, reduction of area 〉=80% is with circle poor performance≤20Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110091223A CN102189122B (en) | 2011-04-12 | 2011-04-12 | Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110091223A CN102189122B (en) | 2011-04-12 | 2011-04-12 | Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling |
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| CN102189122A true CN102189122A (en) | 2011-09-21 |
| CN102189122B CN102189122B (en) | 2012-10-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632089A (en) * | 2011-11-29 | 2012-08-15 | 首钢总公司 | Control method of cooling process of hot-rolled low-carbon boron-containing steel wire rod after rolling |
| CN103170510A (en) * | 2013-02-26 | 2013-06-26 | 首钢总公司 | Hot rolling method for controlling yield ratio of low-carbon cold forging steel |
| CN109465566A (en) * | 2018-11-21 | 2019-03-15 | 首钢集团有限公司 | Improve production method of the high-strength weathering gas shield welding wire with wire rod with circle performance |
| CN112122338A (en) * | 2020-09-16 | 2020-12-25 | 广东韶钢松山股份有限公司 | Ultra-low carbon steel wire rod for steel ladle steel wire and production process thereof |
| CN113337695A (en) * | 2021-06-03 | 2021-09-03 | 广东韶钢松山股份有限公司 | Nb-containing steel wire rod and method for improving strength and toughness of Nb-containing steel wire rod |
| CN113857254A (en) * | 2021-09-16 | 2021-12-31 | 湖南华菱湘潭钢铁有限公司 | Production method of ultra-low carbon steel wire rod for copper-clad steel wire |
| CN115418579A (en) * | 2022-08-02 | 2022-12-02 | 邢台钢铁有限责任公司 | Production method of super electromagnetic pure iron DT4C high-speed wire |
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| CN1259409A (en) * | 1998-12-01 | 2000-07-12 | 北京科技大学 | High strength steel wire shaping technology |
| JP2008007809A (en) * | 2006-06-28 | 2008-01-17 | Toyota Central Res & Dev Lab Inc | Method and device for predicting steel material structure, and program |
| CN101514423A (en) * | 2009-03-27 | 2009-08-26 | 武汉钢铁(集团)公司 | Aluminiferous low-carbon cold heading wire rod steel and production method thereof |
| CN101665865A (en) * | 2009-10-14 | 2010-03-10 | 首钢总公司 | Structural transformation control method in continuous cooling process of ultra-low-carbon wire rod of square billet |
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2011
- 2011-04-12 CN CN201110091223A patent/CN102189122B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259409A (en) * | 1998-12-01 | 2000-07-12 | 北京科技大学 | High strength steel wire shaping technology |
| JP2008007809A (en) * | 2006-06-28 | 2008-01-17 | Toyota Central Res & Dev Lab Inc | Method and device for predicting steel material structure, and program |
| CN101514423A (en) * | 2009-03-27 | 2009-08-26 | 武汉钢铁(集团)公司 | Aluminiferous low-carbon cold heading wire rod steel and production method thereof |
| CN101665865A (en) * | 2009-10-14 | 2010-03-10 | 首钢总公司 | Structural transformation control method in continuous cooling process of ultra-low-carbon wire rod of square billet |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632089A (en) * | 2011-11-29 | 2012-08-15 | 首钢总公司 | Control method of cooling process of hot-rolled low-carbon boron-containing steel wire rod after rolling |
| CN103170510A (en) * | 2013-02-26 | 2013-06-26 | 首钢总公司 | Hot rolling method for controlling yield ratio of low-carbon cold forging steel |
| CN103170510B (en) * | 2013-02-26 | 2015-05-27 | 首钢总公司 | Hot rolling method for controlling yield ratio of low-carbon cold forging steel |
| CN109465566A (en) * | 2018-11-21 | 2019-03-15 | 首钢集团有限公司 | Improve production method of the high-strength weathering gas shield welding wire with wire rod with circle performance |
| CN109465566B (en) * | 2018-11-21 | 2021-05-25 | 首钢集团有限公司 | Production method for improving same-circle performance of wire rod for high-strength weather-resistant gas-shielded welding wire |
| CN112122338A (en) * | 2020-09-16 | 2020-12-25 | 广东韶钢松山股份有限公司 | Ultra-low carbon steel wire rod for steel ladle steel wire and production process thereof |
| CN112122338B (en) * | 2020-09-16 | 2022-04-12 | 广东韶钢松山股份有限公司 | Ultra-low carbon steel wire rod for copper-clad steel wire and production process thereof |
| CN113337695A (en) * | 2021-06-03 | 2021-09-03 | 广东韶钢松山股份有限公司 | Nb-containing steel wire rod and method for improving strength and toughness of Nb-containing steel wire rod |
| CN113337695B (en) * | 2021-06-03 | 2023-03-14 | 广东韶钢松山股份有限公司 | Nb-containing steel wire rod and method for improving strength and toughness of Nb-containing steel wire rod |
| CN113857254A (en) * | 2021-09-16 | 2021-12-31 | 湖南华菱湘潭钢铁有限公司 | Production method of ultra-low carbon steel wire rod for copper-clad steel wire |
| CN115418579A (en) * | 2022-08-02 | 2022-12-02 | 邢台钢铁有限责任公司 | Production method of super electromagnetic pure iron DT4C high-speed wire |
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| CN102189122B (en) | 2012-10-10 |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |