CN102240672B - Process for producing high-speed wire rod by adopting grooveless rolling - Google Patents
Process for producing high-speed wire rod by adopting grooveless rolling Download PDFInfo
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- CN102240672B CN102240672B CN201110135669.8A CN201110135669A CN102240672B CN 102240672 B CN102240672 B CN 102240672B CN 201110135669 A CN201110135669 A CN 201110135669A CN 102240672 B CN102240672 B CN 102240672B
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Abstract
The invention discloses a process for producing a high-speed wire rod by adopting grooveless rolling. The process mainly comprises heating, the grooveless rolling, prefinish rolling, finish rolling, spinning, controlled cooling and packaging, wherein rolling by virtue of a multi-pass plain barrelled roll is adopted in the grooveless rolling, the inlet and outlet of each rolling machine are respectively provided with a guide, the lengthening coefficient of each pass is controlled to at 1.1-1.4 in a rolling process, and the broadening coefficient of each pass is 0.3-0.4, and the operating speed of a billet in the rolling process is 0.3-5.7m/s. In the invention, deformation parameters of steel material in a production process of an 82B high-speed wire rod are fished out by virtue of practice, the dimensional change of the steel material is effectively controlled, and the off-square problem of the steel material in the traditional grooveless rolling production process is solved, thus the production accident rate is greatly reduced, the product quality is improved and obvious economic benefit is obtained. The 82B high-speed wire rod produced by adopting the process disclosed by the invention meets the YB/T146-1998 standard.
Description
Technical field
The invention belongs to metal material processing technical field, be specifically related to a kind of technique of producing high-speed wire rod by adopting grooveless rolling.
Background technology
Roll consumption in high-speed rod steel rolling mill, power consumption, three indexs of operating rate play a part most critical to cost.The Rolling Production technique of current domestic employing is generally to realize the distortion of steel material by each passage pass, obtains needed size, and this technique cannot fundamentally effectively reduce roll consumption, power consumption all the time, improves operating rate.Grooveless rolling production technology is applied in bar production in recent years, and steel rolling mill's high yield, high-quality, low consumption are played to positive effect.But because steel material off-square cannot solve, cannot be applied to the mill area of large frame spacing, especially when the 82B High-speed Wire Rod in short supply of high-speed rod steel rolling mill production market, because material is high-carbon steel, deformation system, temperature schedule, speed system has particularity, in the face of numerous technical barriers, domestic do not have producer to adopt grooveless rolling production technology to produce 82B High-speed Wire Rod.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, a kind of technique of producing high-speed wire rod by adopting grooveless rolling is provided, this technique does not need special installation, processing cost is low, easily realize suitability for industrialized production, the present invention finds out the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in 82B High-speed Wire Rod production process by practice, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, there is obvious economic benefit.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of technique of producing high-speed wire rod by adopting grooveless rolling, it is characterized in that, this technique mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts multi-pass flat rolling; This technique is specific as follows:
(1) heating: adopt walking beam furnace to produce the heating steel billet to 980 ℃ of 82B High-speed Wire Rod～1100 ℃;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 12～14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is 1.1～1.4, every time spread coefficient is 0.3～0.4, and in the operation of rolling, the speed of service of steel billet is 0.3m/s～5.7m/s;
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling and obtain wire rod;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
Described in above-mentioned steps (2), the lengthening coefficient of each passage is controlled at respectively: the first passage lengthening coefficient is 1.2～1.3, the second passage lengthening coefficient is 1.3～1.4, the 3rd passage lengthening coefficient is 1.3～1.4, four-pass lengthening coefficient is 1.3～1.4, the 5th passage lengthening coefficient is 1.3～1.4, the 6th passage lengthening coefficient is 1.2～1.3, the 7th passage lengthening coefficient is 1.3～1.35, the 8th passage lengthening coefficient is 1.25～1.3, the 9th passage lengthening coefficient is 1.3～1.35, the tenth passage lengthening coefficient is 1.21～1.25, the tenth a time lengthening coefficient is 1.25～1.29, the 12 passage lengthening coefficient is 1.21～1.23, the 13 passage lengthening coefficient is 1.1～1.12, the tenth four-pass lengthening coefficient is 1.35～1.37, the lengthening coefficient of preferred each passage is controlled at respectively: the first passage lengthening coefficient is 1.25, the second passage lengthening coefficient is 1.35, the 3rd passage lengthening coefficient is 1.36, four-pass lengthening coefficient is 1.35, the 5th passage lengthening coefficient is 1.34, the 6th passage lengthening coefficient is 1.26, the 7th passage lengthening coefficient is 1.32, the 8th passage lengthening coefficient is 1.28, the 9th passage lengthening coefficient is 1.33, the tenth passage lengthening coefficient is 1.23, the tenth a time lengthening coefficient is 1.27, the 12 passage lengthening coefficient is 1.22, the 13 passage lengthening coefficient is 1.11, the tenth four-pass lengthening coefficient is 1.36.
Described in above-mentioned steps (2), in the operation of rolling, the speed of service of steel billet is 3m/s～5.7m/s.
The present invention compared with prior art has the following advantages:
1, technique of the present invention does not need special installation, and processing cost is low, easily realizes suitability for industrialized production.
2, technique of the present invention not only can realize conventional frame short spacing rolling, also can realize the long spacing rolling that frame spacing is greater than 2 meters～5 meters of conventional units.
3, the present invention finds out the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in 82B High-speed Wire Rod production process by practice, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.
4, adopt technique of the present invention, roll consumption reduces by 70% than common process, and stand motor duty ratio common process declines 8%, and operating rate improves 1.2% than common process, and the 82B High-speed Wire Rod of production meets YB/T146-1998 standard.
Below by embodiment, technical scheme of the present invention is described in further detail.
The specific embodiment
Embodiment 1
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 12 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 980 ℃ that walking beam furnace is 135mm × 135mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 12 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.2, the second passage 1.4, the 3rd passage 1.3, four-pass 1.35, the 5th passage 1.4, the 6th passage 1.2, the 7th passage 1.3, the 8th passage 1.25, the 9th passage 1.35, the tenth passage 1.21, the tenth a time 1.25, the 12 passage 1.23, every time spread coefficient is 0.3～0.4, in the operation of rolling, the speed of service of steel billet is 0.3m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 12.5mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 2
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 13 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1000 ℃ that walking beam furnace is 135mm × 135mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 13 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.3, the second passage 1.35, the 3rd passage 1.35, four-pass 1.4, the 5th passage 1.35, the 6th passage 1.3, the 7th passage 1.35, the 8th passage 1.3, the 9th passage 1.3, the tenth passage 1.25, the tenth a time 1.29, the 12 passage 1.21, the 13 passage 1.12, every time spread coefficient is 0.35～0.4, in the operation of rolling, the speed of service of steel billet is 3m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 10.0mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 3
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 14 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1100 ℃ that walking beam furnace is 150mm × 150mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.25, the second passage 1.3, the 3rd passage 1.4, four-pass 1.3, the 5th passage 1.3, the 6th passage 1.25, the 7th passage 1.32, the 8th passage 1.29, the 9th passage 1.34, the tenth passage 1.23, the tenth a time 1.27, the 12 passage 1.22, the 13 passage 1.1, the tenth four-pass 1.35, every time spread coefficient is 0.32～0.4, in the operation of rolling, the speed of service of steel billet is 5.7m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 12.5mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 4
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 12 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 990 ℃ that walking beam furnace is 165mm × 165mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 12 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.1, the second passage 1.25, the 3rd passage 1.1, four-pass 1.1, the 5th passage 1.2, the 6th passage 1.1, the 7th passage 1.4, the 8th passage 1.1, the 9th passage 1.4, the tenth passage 1.1, the tenth a time 1.4, the 12 passage 1.4, every time spread coefficient is 0.3～0.38, in the operation of rolling, the speed of service of steel billet is 3.1m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 12.5mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 5
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 13 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1030 ℃ that walking beam furnace is 165mm × 165mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 13 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.4, the second passage 1.1, the 3rd passage 1.25, four-pass 1.28, the 5th passage 1.1, the 6th passage 1.4, the 7th passage 1.1, the 8th passage 1.4, the 9th passage 1.1, the tenth passage 1.4, the tenth a time 1.1, the 12 passage 1.1, the 13 passage 1.11, every time spread coefficient is 0.35～0.39, in the operation of rolling, the speed of service of steel billet is 4.9m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 8.0mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 6
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 14 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1080 ℃ that walking beam furnace is 165mm × 165mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.23, the second passage 1.3, the 3rd passage 1.4, four-pass 1.3, the 5th passage 1.3, the 6th passage 1.25, the 7th passage 1.32, the 8th passage 1.29, the 9th passage 1.25, the tenth passage 1.3, the tenth a time 1.28, the 12 passage 1.32, the 13 passage 1.4, the tenth four-pass 1.37, every time spread coefficient is 0.32～0.4, in the operation of rolling, the speed of service of steel billet is 4.2m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 10.0mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 7
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 14 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1080 ℃ that walking beam furnace is 150mm × 150mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.3, the second passage 1.32, the 3rd passage 1.32, four-pass 1.38, the 5th passage 1.36, the 6th passage 1.25, the 7th passage 1.32, the 8th passage 1.26, the 9th passage 1.33, the tenth passage 1.24, the tenth a time 1.26, the 12 passage 1.22, the 13 passage 1.25, the tenth four-pass 1.1, every time spread coefficient is 0.3～0.36, in the operation of rolling, the speed of service of steel billet is 4.5m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 12.5mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 8
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 14 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1080 ℃ that walking beam furnace is 165mm × 165mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.28, the second passage 1.32, the 3rd passage 1.35, four-pass 1.31, the 5th passage 1.32, the 6th passage 1.22, the 7th passage 1.34, the 8th passage 1.27, the 9th passage 1.33, the tenth passage 1.22, the tenth a time 1.26, the 12 passage 1.22, the 13 passage 1.25, the tenth four-pass 1.4, every time spread coefficient is 0.32～0.38, in the operation of rolling, the speed of service of steel billet is 4.2m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 8.0mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Embodiment 9
The technique of the producing high-speed wire rod by adopting grooveless rolling of the present embodiment mainly comprises: heating, grooveless rolling, pre-finish rolling, finish rolling, weave silk, control cold-peace packing, wherein, grooveless rolling adopts 14 passage flat rollings; This technique is specific as follows:
(1) heating: adopt the heating steel billet to 1080 ℃ that walking beam furnace is 150mm × 150mm by sectional dimension;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, the lengthening coefficient of controlling every time in the operation of rolling is respectively: the first passage 1.25, the second passage 1.35, the 3rd passage 1.36, four-pass 1.35, the 5th passage 1.34, the 6th passage 1.26, the 7th passage 1.32, the 8th passage 1.28, the 9th passage 1.33, the tenth passage 1.23, the tenth a time 1.27, the 12 passage 1.22, the 13 passage 1.11, the tenth four-pass 1.36, every time spread coefficient is 0.35～0.4, in the operation of rolling, the speed of service of steel billet is 5.2m/s,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape (about 50mm～100mm) of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling according to conventional method;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape (about 50mm～100mm) after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling according to conventional method and obtain the wire rod that sectional dimension is Φ 10.0mm;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by conventional water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
The present embodiment is by the deformation parameter (being lengthening coefficient and spread coefficient) of steel material in production control process, effectively control steel material change in size, the steel material off-square problem that atresia Rolling Production technique before having solved exists, production accident rate is significantly reduced, product quality is improved, and has obvious economic benefit.The 82B High-speed Wire Rod that the present embodiment is produced meets YB/T146-1998 standard.
Adopt technique of the present invention, roll consumption reduces by 70% than common process, and stand motor duty ratio common process declines 8%, and operating rate improves 1.2% than common process, and the 82B High-speed Wire Rod of production meets YB/T146-1998 standard.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any restriction, every any simple modification of above embodiment being done according to invention technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (3)
1. a technique for producing high-speed wire rod by adopting grooveless rolling, is characterized in that, this technique mainly comprises: heating-grooveless rolling-pre-finish rolling-finish rolling-weave silk-control cold-packing, and wherein, grooveless rolling adopts multi-pass flat rolling; This technique is specific as follows:
(1) heating: adopt walking beam furnace to produce the heating steel billet to 980 ℃ of 82B High-speed Wire Rod～1100 ℃;
(2) grooveless rolling: the rolling that adopts the mode of flat rolling to carry out 12～14 passages to the steel billet after heating in step (1) obtains steel bar, when rolling, the import and export of each milling train is provided with for guiding direction on request of steel billet and state to pass in and out smoothly the guide and guard of milling train, spread coefficient is 0.3～0.4, and in the operation of rolling, the speed of service of steel billet is 0.3m/s～5.7m/s, the lengthening coefficient of described each passage is controlled at respectively: the first passage lengthening coefficient is 1.2～1.3, the second passage lengthening coefficient is 1.3～1.4, the 3rd passage lengthening coefficient is 1.3～1.4, four-pass lengthening coefficient is 1.3～1.4, the 5th passage lengthening coefficient is 1.3～1.4, the 6th passage lengthening coefficient is 1.2～1.3, the 7th passage lengthening coefficient is 1.3～1.35, the 8th passage lengthening coefficient is 1.25～1.3, the 9th passage lengthening coefficient is 1.3～1.35, the tenth passage lengthening coefficient is 1.21～1.25, the tenth a time lengthening coefficient is 1.25～1.29, the 12 passage lengthening coefficient is 1.21～1.23, the 13 passage lengthening coefficient is 1.1～1.12, the tenth four-pass lengthening coefficient is 1.35～1.37,
(3) pre-finish rolling: adopt flying shear to cut off the irregular place of Head and Tail Shape of steel bar described in step (2), then the steel bar after shearing is carried out to pre-finish rolling;
(4) finish rolling: adopt flying shear to cut off the irregular place of steel bar Head and Tail Shape after pre-finish rolling in step (3), then the steel bar after shearing is carried out to finish rolling and obtain wire rod;
(5) weave silk: adopt Laying head to change wire rod described in step (4) into ring shape, obtain wire-rod roll;
(6) control cold: wire-rod roll described in step (5) is undertaken cooling by water-cooled and air-cooled mode successively;
(7) packing: by cooled wire-rod roll packing in step (6), 82B High-speed Wire Rod gets product.
2. the technique of producing high-speed wire rod by adopting grooveless rolling according to claim 1, it is characterized in that, described in step (2), the lengthening coefficient of each passage is controlled at respectively: the first passage lengthening coefficient is 1.25, the second passage lengthening coefficient is 1.35, the 3rd passage lengthening coefficient is 1.36, four-pass lengthening coefficient is 1.35, the 5th passage lengthening coefficient is 1.34, the 6th passage lengthening coefficient is 1.26, the 7th passage lengthening coefficient is 1.32, the 8th passage lengthening coefficient is 1.28, the 9th passage lengthening coefficient is 1.33, the tenth passage lengthening coefficient is 1.23, the tenth a time lengthening coefficient is 1.27, the 12 passage lengthening coefficient is 1.22, the 13 passage lengthening coefficient is 1.11, the tenth four-pass lengthening coefficient is 1.36.
3. the technique of producing high-speed wire rod by adopting grooveless rolling according to claim 1, is characterized in that, described in step (2), in the operation of rolling, the speed of service of steel billet is 3m/s～5.7m/s.
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| CN103341487B (en) * | 2013-07-01 | 2015-12-30 | 中冶赛迪工程技术股份有限公司 | A kind of high-speed rod close-coupled atresia rolling line and production method |
| CN104001731A (en) * | 2014-05-30 | 2014-08-27 | 福建三安钢铁有限公司 | Method for controlling iron mould at outlet of intermediate rolling adopting complete pass-free rolling |
| CN104084421B (en) * | 2014-06-19 | 2017-07-18 | 西安盛日机电科技有限公司 | A kind of production technology of high-speed rod-rolling mill grooveless rolling 82B wire rods |
| CN107054715B (en) * | 2016-12-28 | 2019-10-18 | 东莞市科力钢铁线材有限公司 | The automatic unwrapping wire severing of wire-drawing equipment is packaged production technology |
| CN108296283A (en) * | 2017-01-11 | 2018-07-20 | 中冶华天南京工程技术有限公司 | Ten passage anapsid bar rolling techniques |
| CN109174963B (en) * | 2018-08-21 | 2020-07-17 | 唐山市德龙钢铁有限公司 | Production method of blank rolling mill for roll-forming of rod and wire in hole-free mode |
| CN111020146A (en) * | 2019-12-27 | 2020-04-17 | 新疆八一钢铁股份有限公司 | Steel rolling heating method for controlling 82B net carbon |
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