CN113857254A - Production method of ultra-low carbon steel wire rod for copper-clad steel wire - Google Patents
Production method of ultra-low carbon steel wire rod for copper-clad steel wire Download PDFInfo
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- CN113857254A CN113857254A CN202111089002.9A CN202111089002A CN113857254A CN 113857254 A CN113857254 A CN 113857254A CN 202111089002 A CN202111089002 A CN 202111089002A CN 113857254 A CN113857254 A CN 113857254A
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- equal
- steel wire
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- wire rod
- copper
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 12
- 238000009987 spinning Methods 0.000 claims abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011574 phosphorus Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000002791 soaking Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000000265 homogenisation Methods 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Abstract
A production method of an ultra-low carbon steel wire rod for a copper-clad steel wire comprises the following chemical components of, by weight, less than or equal to 0.01% of C, less than or equal to 0.015% of Si, less than or equal to 0.10% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, and the balance Fe and inevitable impurities; the method comprises the following process steps: (1) heating a steel billet: the heating section 1190-1250 ℃, the soaking section 1170-1210 ℃ and the initial rolling temperature 1100-1150 ℃; (2) rough and medium rolling: and (4) starting high-pressure water to remove phosphorus, wherein the phosphorus removal pressure is more than or equal to 18 MPa. (3) Finish rolling: the finishing temperature is more than or equal to 980 ℃; (4) and (3) cooling: controlling the spinning temperature to 950-980 ℃, slowly cooling after spinning, and totally closing a heat-insulating cover of a conveying roller way and a cooling fan. The ultra-low carbon steel wire rod for the copper-clad steel wire with the specification of phi 5.5 mm-phi 14.0mm and without coarse grains on the surface can be developed by utilizing the existing equipment and process conditions.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and relates to a production method of an ultra-low carbon steel wire rod for a copper-clad steel wire.
Background
In recent years, the production development of copper-clad steel wires is very rapid, the copper-clad steel wires are wires taking steel wires as cores, and in order to increase the electric conductivity of the copper-clad steel wires, the steel wires taken as the cores are all produced by using ultra-low carbon steel wire rods. The steel wire of the copper-clad steel wire produced by the wire rod is subjected to great drawing deformation and can not be broken in the drawing process, so that the wire rod is required to have good mechanical property, and the wire rod is required to have extremely low pearlite content and uniform tissue. Because the ultra-low carbon steel wire rod is easy to have coarse grain structures on the surface, the existence of the coarse grain structures seriously influences the deep drawing of the wire rod and the surface quality of finished steel wires. In order to improve the drawing performance and quality of the ultra-low carbon steel wire rod for the copper-clad steel wire, the problem that how to eliminate the coarse grain structure on the surface of the ultra-low carbon steel wire rod for the copper-clad steel wire is in urgent need to be solved is solved.
Disclosure of Invention
The invention aims to provide a steel production method for eliminating coarse grains on the surface of an ultra-low carbon steel wire rod for a copper-clad steel wire, which is used for eliminating the coarse grains on the surface of the ultra-low carbon steel wire rod for the copper-clad steel wire, so that the deep drawing of the wire rod and the surface quality of a finished steel wire are guaranteed.
The technical scheme of the invention is as follows:
a production method of an ultra-low carbon steel wire rod for a copper-clad steel wire comprises the following chemical components of, by weight, less than or equal to 0.01% of C, less than or equal to 0.015% of Si, less than or equal to 0.10% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, and the balance Fe and inevitable impurities; the method comprises the following process steps:
(1) heating a steel billet: the heating section 1190-1250 ℃, the soaking section 1170-1210 ℃ and the initial rolling temperature 1100-1150 ℃;
(2) rough and medium rolling: starting high-pressure water to remove phosphorus, wherein the phosphorus removal pressure is more than or equal to 18 MPa;
(3) finish rolling: the finishing temperature is more than or equal to 980 ℃;
(4) and (3) cooling: controlling the spinning temperature to 950-980 ℃, slowly cooling after spinning, and totally closing a heat-insulating cover of a conveying roller way and a cooling fan.
The invention has the beneficial effects that: according to the influence of the chemical components and the process technology of the wire rod on the material performance, the metallographic structure and the like, the rolling method for eliminating the coarse grains on the surface of the ultra-low carbon steel wire rod for the copper-clad steel wire is researched by combining the existing equipment and the process technology level to realize the homogenization of the metallographic structure of the wire rod. Because the high billet heating temperature is adopted, the full growth and homogenization of billet crystal grains are promoted; the adoption of high precision rolling temperature is beneficial to full growth and homogenization of broken crystal grains in the rolling process; the adoption of high spinning temperature and slow cooling process is favorable for fully precipitating, growing and homogenizing the proeutectoid ferrite grains, and only obtains a very small amount of pearlite structure.
Drawings
FIG. 1 is a wire rod organization chart of example 1.
FIG. 2 is a wire rod organization chart of example 2.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1:
a production method of an ultra-low carbon steel wire rod for a copper-clad steel wire is characterized by carrying out production according to the process flows of 150mm multiplied by 12000mm continuous casting billet inspection, heating, rolling, spinning, controlled cooling, finishing and the like. The rolling specification phi is 6.5 mm.
The steel comprises the following chemical components, by weight, C =0.008%, Si =0.012%, Mn = 0.05%, P =0.010%, S =0.007%, and the balance of Fe and inevitable impurities. The rolling process comprises the following steps:
(1) heating a steel billet: the heating section temperature is 1220 ℃, the soaking section temperature is 1200 ℃ and the initial rolling temperature is 1130 ℃.
(2) Rough and medium rolling: and (4) starting high-pressure water to remove phosphorus, wherein the phosphorus removal pressure is 20 MPa.
(3) Finish rolling: rolling by a reducing sizing mill set, and finishing at the temperature of 1000 ℃.
(4) And (3) controlling cooling: the spinning temperature is 970 ℃. After spinning, slow cooling is adopted, and a heat preservation cover of a conveying roller way is closed completely.
The wire rod structure is shown in figure 1. The mechanical properties of the wire rod are shown in table 1.
Example 2:
a production method of an ultra-low carbon steel wire rod for a copper-clad steel wire is characterized in that the rolling specification phi is 5.5 mm.
The steel comprises the following chemical components in percentage by weight: c =0.007%, Si =0.011%, Mn = 0.06%, p =0.011%, s =0.008%, and the balance Fe and inevitable impurities. The rolling process comprises the following steps:
(1) the heating system of the steel billet is as follows: the heating section temperature is 1200 ℃, the soaking section temperature is 1190 ℃, and the start rolling temperature is 1140 ℃.
(2) Rough and medium rolling: and (4) starting high-pressure water to remove phosphorus, wherein the phosphorus removal pressure is 20 MPa.
(3) Finish rolling: rolling by adopting a reducing sizing mill group, and finishing at a temperature of 990 ℃.
(4) And (3) controlling cooling: the spinning temperature is 970 ℃. After spinning, slow cooling is adopted, and a heat preservation cover of a conveying roller way is closed completely.
The wire rod structure is shown in figure 2. The mechanical properties of the wire rod are shown in table 1.
TABLE 1 mechanical Properties of the wire rod
Claims (1)
1. A production method of an ultra-low carbon steel wire rod for a copper-clad steel wire is characterized by comprising the following steps: the steel comprises the chemical components with the weight percentage of less than or equal to 0.01 percent of C, less than or equal to 0.015 percent of Si, less than or equal to 0.10 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, and the balance of Fe and inevitable impurities; the method comprises the following process steps:
(1) heating a steel billet: the heating section 1190-1250 ℃, the soaking section 1170-1210 ℃ and the initial rolling temperature 1100-1150 ℃;
(2) rough and medium rolling: starting high-pressure water to remove phosphorus, wherein the phosphorus removal pressure is more than or equal to 18 MPa;
(3) finish rolling: the finishing temperature is more than or equal to 980 ℃;
(4) and (3) cooling: controlling the spinning temperature to 950-980 ℃, slowly cooling after spinning, and totally closing a heat-insulating cover of a conveying roller way and a cooling fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111089002.9A CN113857254A (en) | 2021-09-16 | 2021-09-16 | Production method of ultra-low carbon steel wire rod for copper-clad steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111089002.9A CN113857254A (en) | 2021-09-16 | 2021-09-16 | Production method of ultra-low carbon steel wire rod for copper-clad steel wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113857254A true CN113857254A (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111089002.9A Withdrawn CN113857254A (en) | 2021-09-16 | 2021-09-16 | Production method of ultra-low carbon steel wire rod for copper-clad steel wire |
Country Status (1)
| Country | Link |
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| CN (1) | CN113857254A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189122A (en) * | 2011-04-12 | 2011-09-21 | 首钢总公司 | Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling |
| CN102268595A (en) * | 2011-08-01 | 2011-12-07 | 武汉钢铁(集团)公司 | Copper clad steel and production method thereof |
| CN104772346A (en) * | 2015-04-07 | 2015-07-15 | 首钢总公司 | Method for reducing tensile strength of steel hot-rolled wire rod for flexible copper-clad steel wire |
| CN107675068A (en) * | 2017-09-27 | 2018-02-09 | 武汉钢铁有限公司 | The production method of superfine welding wire steel wire rod |
| CN108062992A (en) * | 2017-11-07 | 2018-05-22 | 邢台钢铁有限责任公司 | Copper clad steel composite shielding cable steel wire rod and its production method |
-
2021
- 2021-09-16 CN CN202111089002.9A patent/CN113857254A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189122A (en) * | 2011-04-12 | 2011-09-21 | 首钢总公司 | Method for controlling process for cooling hot-rolled ultra low carbon steel wire rod after rolling |
| CN102268595A (en) * | 2011-08-01 | 2011-12-07 | 武汉钢铁(集团)公司 | Copper clad steel and production method thereof |
| CN104772346A (en) * | 2015-04-07 | 2015-07-15 | 首钢总公司 | Method for reducing tensile strength of steel hot-rolled wire rod for flexible copper-clad steel wire |
| CN107675068A (en) * | 2017-09-27 | 2018-02-09 | 武汉钢铁有限公司 | The production method of superfine welding wire steel wire rod |
| CN108062992A (en) * | 2017-11-07 | 2018-05-22 | 邢台钢铁有限责任公司 | Copper clad steel composite shielding cable steel wire rod and its production method |
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Application publication date: 20211231 |