CN112589225A - Cutting method for reducing accident rate of rolling of conductive steel wire rod - Google Patents
Cutting method for reducing accident rate of rolling of conductive steel wire rod Download PDFInfo
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- CN112589225A CN112589225A CN202011256428.4A CN202011256428A CN112589225A CN 112589225 A CN112589225 A CN 112589225A CN 202011256428 A CN202011256428 A CN 202011256428A CN 112589225 A CN112589225 A CN 112589225A
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- cutting
- plate blank
- axial flow
- flow fan
- rolling
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- 238000005520 cutting process Methods 0.000 title claims abstract description 98
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000005096 rolling process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000007613 environmental effect Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a cutting method for reducing the rolling accident rate of a conductive steel wire rod, which is characterized in that a square billet is cut by adopting a plate blank and then rolled to produce the conductive steel wire rod, the plate blank is cut by adopting a flame longitudinal cutting plate blank mode, before cutting, the plate blank is evenly divided into a plurality of equal parts, an axial flow fan is arranged at the end part of each equal part of the plate blank, an axial flow fan is additionally arranged on a cutting trolley, then the axial flow fan at the end part of the plate blank is started, the cutting trolley and the upper axial flow fan thereof are started to carry out flame cutting operation, the axial flow fan on the cutting trolley moves along with the cutting trolley to carry out forced cooling on the cut of the plate blank. According to the invention, aiming at the structure state of each surface of the plate blank, a process method for accelerating the cutting cooling speed is adopted, so that a fine isometric area is rapidly formed at the cutting position, the structure state of each surface of the cut square blank is the same and uniform, the rolling state is kept at an optimal level, and the rolling accident rate is reduced.
Description
Technical Field
The invention relates to the field of steel rolling, in particular to a cutting method for reducing the rolling accident rate of a conductive steel wire rod.
Background
The conductive steel wire rod is mainly used for manufacturing a copper clad steel wire, the copper clad steel wire rod is manufactured into the copper clad steel wire through a series of processes, in communication telecommunication, the copper clad steel wire integrates tensile strength and toughness (2 times of a pure copper wire), conductivity and high-frequency characteristics of copper, is light in weight (12% lighter than the pure copper wire), has no creep deformation, can withstand attack of wind, snow and ice buds, and can withstand large-span, salt mist and easily corrosive environments, so that distortion and distortion of transmitted information can be reduced, and transmission quality is improved. And has the advantages of saving copper materials, reducing cost and the like, and is a substitute of a pure copper wire product. The compound type grounding conductor is widely applied to core wires of parallel twin-core telephone user communication, connectors of various electronic components, core wires of military coated wires, overhead wires of power transmission and telephone lines, overhead wires of electrified railways and electrified light rail contact networks, braided shield wires of power cables, copper-clad steel stranded wire carrier cables and hanging strings and grounding rods in the power industry.
The conductive steel belongs to ultra-low carbon steel, the domestic conductive steel is a series of steel developed in nearly 10 years, the production of the conductive steel by domestic steel mills mainly adopts a square billet process, and only a few domestic steel mills adopt a plate blank cutting square billet process for production. The aluminum alloy square billet is produced by adopting the traditional square billet process, and due to the adoption of the Al deoxidation process, the molten steel has poor liquidity, flocculation is easily caused, the production is difficult, the production rhythm is influenced, and meanwhile, the casting blank is easy to form quality problems such as subcutaneous bubbles and the like, so that a series of problems such as subsequent drawing copper plating and the like are caused. Through batch production verification, the problem can be completely solved by adopting a plate blank square blank cutting process, and the use requirements of users can be met. For the conductive steel produced by the process, the quality of the square billet cut by the plate blank is particularly important, because the cutting quality of the square billet serving as the raw material of the wire rod greatly influences the rolling state and further influences the rolling accident rate. The factors influencing the quality of the cut square billet are many, the appearance quality factors such as cutting size, bending degree, slag, cutting nodules and the like, the internal quality factors such as cutting cooling speed cause different tissue states of all the surfaces of the square billet to influence the subsequent rolling state, the conductive steel is ultra-low carbon steel, the production difficulty is very high for wire production, the internal cutting quality control is very important under the condition that the external cutting quality is well controlled, otherwise the subsequent rolling state is influenced due to different tissue states of all the surfaces of the square billet, and the rolling accident rate is increased. Therefore, a cutting method is urgently needed to reduce the accident rate of conductive steel production rolling.
In CN110722330A patent "method for producing ultra-low carbon steel wire rod for electric conduction", the plate blank cutting process is adopted for producing the conductive steel wire rod, but the cutting process is not related, in this case, the cutting surface of the square blank is easy to cause coarse structure at the edge part due to slow cooling speed, thus the structure state is different from the structure state of the plate blank surface (fine isometric crystal area), in this case, the subsequent rolling state is different due to different structure states of each surface of the square blank, and the rolling accident rate is increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cutting method for reducing the rolling accident rate of a conductive steel wire rod, wherein the structure states of all surfaces of a square billet are the same and uniform, so that the rolling state is kept at the optimal level, the rolling accident rate is reduced, and the smooth production is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cutting method for reducing the accident rate of rolling of a conductive steel wire rod comprises the following steps:
and (3) cutting a square billet by adopting a plate blank, and then rolling to produce the conductive steel wire rod. The slab cutting adopts a flame longitudinal slab cutting mode, before cutting, the slab is averagely divided into a plurality of equal parts, an axial flow fan is arranged at the end part of each equal part of the slab, an axial flow fan is added on a cutting trolley, then the axial flow fan at the end part of the slab is started, the cutting trolley and an axial flow fan thereon are started to carry out flame cutting operation, and the axial flow fan on the cutting trolley moves along with the cutting trolley to carry out forced cooling on the slab cut; the cutting cooling speed of the plate blank is controlled to be 5-15 ℃/s.
The operation is specifically as follows according to the ambient temperature:
the environmental temperature is 5-20 ℃, the advancing speed of the cutting trolley is 0.15-0.17m/min, the air volume of the axial flow fan at the end of the plate blank is 140-170m3/h, and the air volume of the axial flow fan on the cutting trolley is 70-100m 3/h.
The environmental temperature is more than 20 ℃, the advancing speed of the cutting trolley is 0.12-0.14m/min, the air volume of the axial flow fan at the slab end is 180-230m3/h, and the air volume of the axial flow fan on the cutting trolley is 90-150m3/h
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, aiming at the structure state of each surface of the plate blank, a process method for accelerating the cutting cooling speed is adopted, so that a fine isometric area is rapidly formed at the cutting position, the structure state of each surface of the cut square blank is the same and uniform, the rolling state is kept at an optimal level, and the rolling accident rate is reduced.
Detailed Description
The invention is further illustrated by the following examples:
the following examples describe the invention in detail. These examples are merely illustrative of the best embodiments of the present invention and do not limit the scope of the invention.
A cutting method for reducing the accident rate of rolling of a conductive steel wire rod comprises the following steps:
and (3) cutting a square billet by adopting a plate blank, and then rolling to produce the conductive steel wire rod. The slab cutting adopts a flame longitudinal slab cutting mode, the slab is preheated to a burning point by using flame generated by mixed combustion of oxygen and methane, metal is melted by using high temperature generated in the combustion process of iron oxide, and slag generated in the combustion process is blown by cutting oxygen flow so as to form a cutting seam.
Before cutting, the plate blank is averagely divided into a plurality of equal parts, an axial flow fan is arranged at the end part of each equal part of the plate blank, and an axial flow fan is additionally arranged on a cutting trolley. And then, starting an axial flow fan at the end part of the slab, starting the cutting trolley and an upper axial flow fan thereof, and carrying out flame cutting operation, wherein the axial flow fan on the cutting trolley moves along with the cutting trolley to carry out forced cooling on the slab notch.
And 2) cutting, wherein the cutting cooling speed of the plate blank is controlled to be 5-15 ℃/s.
The operation is specifically as follows according to the ambient temperature:
the environmental temperature is 5-20 ℃, the advancing speed of the cutting trolley is 0.15-0.17m/min, and the air volume of the axial flow fan at the plate blank end is 140-170m3The air volume of an axial flow fan on the cutting trolley is 70-100m3/h。
The environmental temperature is more than 20 ℃, the advancing speed of the cutting trolley is 0.12-0.14m/min, and the air quantity of the axial flow fan at the plate blank end is 180-3H, the air volume of the axial flow fan on the cutting trolley is 90-150m3/h。
Example 1: the plate blank specification is 1650mm 9300mm copper-clad steel plate blank, the cut square blank specification is 170 mm 175mm, and the operation temperature is 10 ℃.
The cutting method for reducing the rolling accident rate of the conductive steel wire rod comprises the following steps:
1) and (5) preparing.
Before cutting, the slab is evenly divided into 9 equal parts, and axial flow fans at the end parts of the slab are regularly arranged. The cutting trolley and the axial flow fan thereof are ready to be cut at the cutting position;
2) and (6) cutting.
And (3) opening an axial flow fan at the end part of the slab, opening an axial flow fan on the cutting trolley, and cutting, wherein the axial flow fan moves along with the cutting trolley to perform forced cooling on the slab notch. The traveling speed of the cutting trolley is 0.16m/min, and the air volume of the axial flow fan at the end of the plate blank is 140-3The air volume of an axial flow fan on the cutting trolley is 70-100m3H is used as the reference value. The cutting cooling speed of the plate blank is 10 ℃/s.
3) And (6) rolling the wire rod.
The average accident rate of wire rod rolling and steel piling is reduced to zero from 5 times per hundred tons.
Example 2: the plate blank specification is 1650mm 9300mm copper-clad steel plate blank, the cut square blank specification is 170 mm 175mm, and the operation temperature is 27 ℃.
1) And (5) preparing.
Before cutting, the slab is evenly divided into 9 equal parts, and axial flow fans at the end parts of the slab are regularly arranged. The cutting trolley and the axial flow fan thereof are ready to be cut at the cutting position;
2) and (6) cutting.
And (3) opening an axial flow fan at the end part of the slab, opening an axial flow fan on the cutting trolley, and cutting, wherein the axial flow fan moves along with the cutting trolley to perform forced cooling on the slab notch. The traveling speed of the cutting trolley is 0.13m/min, and the air volume of the axial flow fan at the end of the plate blank is 180-3H, the air volume of the axial flow fan on the cutting trolley is 90-150m3H is used as the reference value. The cutting cooling speed of the plate blank is 7 ℃/s.
3) And (6) rolling the wire rod.
The average accident rate of wire rod rolling and steel piling is reduced to zero from 5 times per hundred tons.
Claims (4)
1. A cutting method for reducing the rolling accident rate of a conductive steel wire rod is characterized in that a square billet is cut by adopting a plate blank and then rolled to produce the conductive steel wire rod, the plate blank is cut by adopting a flame longitudinal cutting plate blank mode, before cutting, the plate blank is averagely divided into a plurality of equal parts, an axial flow fan is arranged at the end part of each equal part of the plate blank, an axial flow fan is additionally arranged on a cutting trolley, then the axial flow fan at the end part of the plate blank is started, the cutting trolley and the axial flow fan thereon are started to carry out flame cutting operation, the axial flow fan on the cutting trolley moves along with the cutting trolley to carry out forced cooling on the cut of the plate blank, and the cutting cooling speed of.
2. The cutting method for reducing the accident rate of rolling the conductive steel wire rod as claimed in claim 1, wherein the ambient temperature is 5-20 ℃, the traveling speed of the cutting trolley is 0.15-0.17m/min, and the air volume of the axial flow fan at the end of the slab is 140-3The air volume of an axial flow fan on the cutting trolley is 70-100m3/h。
3. The steel disc for reducing electric conduction of claim 1The cutting method of the accident rate of strip rolling is characterized in that the environmental temperature is more than 20 ℃, the advancing speed of the cutting trolley is 0.12-0.14m/min, and the air quantity of an axial flow fan at the end of a plate blank is 180-3H, the air volume of the axial flow fan on the cutting trolley is 90-150m3/h。
4. The cutting method for reducing the rolling accident rate of the conductive steel wire rod according to claim 1, wherein the plate blank is equally divided into 6-10 equal parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256428.4A CN112589225A (en) | 2020-11-11 | 2020-11-11 | Cutting method for reducing accident rate of rolling of conductive steel wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011256428.4A CN112589225A (en) | 2020-11-11 | 2020-11-11 | Cutting method for reducing accident rate of rolling of conductive steel wire rod |
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| Publication Number | Publication Date |
|---|---|
| CN112589225A true CN112589225A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011256428.4A Pending CN112589225A (en) | 2020-11-11 | 2020-11-11 | Cutting method for reducing accident rate of rolling of conductive steel wire rod |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825854A (en) * | 1981-08-10 | 1983-02-16 | Nippon Steel Corp | Longitudinally cutting method for continuously cast slab of electromagnetic steel |
| JPS6444278A (en) * | 1987-08-11 | 1989-02-16 | Kobe Steel Ltd | Method for cutting bar from steel sheet |
| CN1778486A (en) * | 2004-11-17 | 2006-05-31 | 首钢总公司 | After-roll reinforced cooling process for 82B wire rod steel strand |
| CN104661787A (en) * | 2012-04-05 | 2015-05-27 | Sage电致变色显示有限公司 | Method of and apparatus for thermal laser scribe cutting for electrochromic device production; corresponding cut glass panel |
| CN110722330A (en) * | 2019-10-31 | 2020-01-24 | 武汉钢铁有限公司 | Production method of ultra-low carbon steel wire rod for electric conduction |
| CN210548917U (en) * | 2019-06-12 | 2020-05-19 | 重庆依斯普激光技术股份有限公司 | Plate pipe laser cutting machine with cutting opening capable of being cooled rapidly |
| CN111621716A (en) * | 2020-05-14 | 2020-09-04 | 河北普阳钢铁有限公司 | Nb-containing low alloy steel rolling process |
-
2020
- 2020-11-11 CN CN202011256428.4A patent/CN112589225A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825854A (en) * | 1981-08-10 | 1983-02-16 | Nippon Steel Corp | Longitudinally cutting method for continuously cast slab of electromagnetic steel |
| JPS6444278A (en) * | 1987-08-11 | 1989-02-16 | Kobe Steel Ltd | Method for cutting bar from steel sheet |
| CN1778486A (en) * | 2004-11-17 | 2006-05-31 | 首钢总公司 | After-roll reinforced cooling process for 82B wire rod steel strand |
| CN104661787A (en) * | 2012-04-05 | 2015-05-27 | Sage电致变色显示有限公司 | Method of and apparatus for thermal laser scribe cutting for electrochromic device production; corresponding cut glass panel |
| CN210548917U (en) * | 2019-06-12 | 2020-05-19 | 重庆依斯普激光技术股份有限公司 | Plate pipe laser cutting machine with cutting opening capable of being cooled rapidly |
| CN110722330A (en) * | 2019-10-31 | 2020-01-24 | 武汉钢铁有限公司 | Production method of ultra-low carbon steel wire rod for electric conduction |
| CN111621716A (en) * | 2020-05-14 | 2020-09-04 | 河北普阳钢铁有限公司 | Nb-containing low alloy steel rolling process |
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Application publication date: 20210402 |
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