CN101152654A - Non-groove rolling method for high speed wire bar intermediate rolling train - Google Patents
Non-groove rolling method for high speed wire bar intermediate rolling train Download PDFInfo
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- CN101152654A CN101152654A CNA2006101165030A CN200610116503A CN101152654A CN 101152654 A CN101152654 A CN 101152654A CN A2006101165030 A CNA2006101165030 A CN A2006101165030A CN 200610116503 A CN200610116503 A CN 200610116503A CN 101152654 A CN101152654 A CN 101152654A
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Abstract
The invention discloses a non-groove rolling method for a high speed wire rod roughing mill group and mainly solves rolling technical problem of the high speed wire rod roughing mill group. The non-groove rolling method comprises two pass non-groove rolling, four pass non-groove rolling or six pass non-groove rolling; the ratio of height and width of the rolling component is 0.90 to 1.58, reduction rate of pass is 15 percent to 45 percent, rolling temperature is 1000 celsius degrees to 1100 celsius degrees, the adaptation range of blank is 120*120mm to 180*180mm, and the absolute spread coefficient range is 0.25 to 0.45. The invention adopts a pass-free flat roller to replace a rough rolling pass roller of the prior art and realizes non-groove rolling of the high speed wire rod roughing mill group. The invention aims at providing the non-groove rolling method with the high speed wire rod roughing mill group which adopts the flat roller to replace the rough pass roller, meanwhile, production cost is decreased, product quality and productivity of the mill is improved and the adaptation range of blank is expanded.
Description
Technical field
The present invention relates to metal rolled technology, particularly the rolling technique of high-speed rod roughing unit.
Background technology
High-speed rod production generally all is to adopt the groove rolling method, and pass schedule is made of breakdown pass, elongation pass and finishing groove.Extension and finishing groove are generally ellipse-circular hole system, and breakdown pass is box hole, ellipse, circular hole.The major advantage that adopts this pass schedule is that deformation ratio is more even, and the shared property of pass is better, and the transition of rolled piece section configuration in different passages is milder, is difficult for producing local stress, and the cooling of rolled piece also relatively evenly.This pass schedule has become the main flow pass schedule of high-speed wire rolling.
But adopt the groove rolling method to have following shortcoming:
1. adopt the groove rolling method, must produce behind the fluting on the new roller, the roll utilization rate is low, and the influence inhomogeneous and sidewall of pass of groove wearing and tearing simultaneously reduces roll loaded vehicle number of times, has increased roll consumption, and production cost is higher.
2. adopt the groove rolling method, the restriction of owing to the sidewall of pass rolled piece being spreaded in the operation of rolling, if pass and rules design are improper, or depress adjust improper, or rolling temperature and mill speed fluctuation, be prone to and be full of, owe to be full of with problem such as pass dislocation and cause the ears or side handles of a utensil, defective such as folding, influenced high-speed rod product size precision and surface quality.
3. adopt the groove rolling method, need change the hole after the groove wearing and tearing and shut down, influence rolling rate.
4. adopt the groove rolling method, because the roll fluting has reduced roll strength and rigidity, blank accommodation is narrower.
Summary of the invention
The object of the present invention is to provide a kind of grooveless rolling method of high-speed rod roughing unit, adopt plain-barreled roll to replace breakdown pass, reduce production costs, improve the quality of products and rolling rate, enlarge blank accommodation.
For achieving the above object, technical scheme of the present invention is,
The grooveless rolling method of high-speed rod roughing unit adopts two passage grooveless rollings, four-pass grooveless rolling or six passage grooveless rollings; The rolled piece depth-width ratio is 0.90～1.58, and percentage pass reduction is 15%～45%, and rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 120 * 120 millimeters～180 * 180 millimeters.
Further, adopt two passage grooveless rollings, the rolled piece depth-width ratio is 0.95～1.55, percentage pass reduction is 18%～30%, rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 140 * 140 millimeters～160 * 160 millimeters, and absolute spread coefficient scope is 0.25～0.45.
Again, adopt the four-pass grooveless rolling, the rolled piece depth-width ratio is 1.10～1.51, and percentage pass reduction is 16%～40%, and rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 120 * 120 millimeters～180 * 180 millimeters.
Again, adopt six passage grooveless rollings, the rolled piece depth-width ratio is 1.10～1.58, and percentage pass reduction is 20%～40%, and rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 120 * 120 millimeters～180 * 180 millimeters.
The present invention adopts the flat roll of anapsid to replace the breakdown pass roll of prior art, realizes high-speed rod roughing unit grooveless rolling.
The grooveless rolling method of high-speed rod roughing unit of the present invention has solved following two problems that may be created in theory in the grooveless rolling process: the rolling stability of rolled piece is relatively poor, twisted off-square phenomenon occurs; Unclear to the bight point law of rolled piece in the operation of rolling, product surface quality may be affected.
This is because the present invention is by studying flat rolling bight point law, to since the flat rolling process in side cydariform (mainly being twin drum) appears, be difficult to weigh its bight pointization with the curvature of bight circular arc, here pointization degree in bight adopts bight pointization coefficient to quantize, research by numerical simulation and mill rolling practice, grasped the deformation rule of rolled piece in the operation of rolling, clear and definite may be in the operation of rolling to the situation that influences of rolled piece surface quality, by to rolled piece depth-width ratio in the grooveless rolling process, percentage pass reduction, controls such as rolling temperature prove in high line roughing unit Application feasibility.
Beneficial effect of the present invention
1. improve operating rate of rolling mill and productivity ratio.Because the roll anapsid can change rolling schedule by regulating roll gap, has saved roll changing time.
2. reduce roll consumption and production cost.Because adopt flat rolling, deformation of rolled wire is even, does not have the roll surface speed difference, thereby the wearing and tearing uniform wear amount of roll is less; The body of roll does not have groove, and the utilization rate of roll working surface improves; Reduce the roll turning amount, increase the recycling number of times.The storage capacity of roll reduces significantly, saves the expense of roll.
3. improve lumber recovery.Owing to adopting flat rolling, the rolled piece width is depressed evenly, and the tongue at rolled piece two ends, fish tail zone are shortened, and cuts to decrease and lacks.
4. energy efficient.Owing to the roll anapsid, there is not the restriction of the sidewall of pass, the distortion of rolled piece broad ways has evenly reduced roll-force, saves energy.
5. realize heavy reduction rolling.Because the roll anapsid, plain-barreled roll all increases than the strength and stiffness of concave roll, can increase billet size, or increases the drafts of passage, reduces rolling pass.
6. reduce product owing to the mistake that groove rolling produces is full of, owes to be full of appearance with problems such as pass dislocation; The lateral flow of metal increases, and helps the rolled piece top layer and upgrades, and rolled piece free of surface defects, heavy reduction make rolled piece dense structure, and be functional.
Description of drawings
Fig. 1 is the variation of embodiments of the invention 2 four-pass flat rolling rolled piece bight pointization coefficients;
Fig. 2 a, Fig. 2 b are grooveless rolling 6V of the present invention and 12V outlet section 100 * macrograph.
The specific embodiment
In following examples, product specification is φ 5.5mm, φ 6.5mm, φ 7.0mm and φ 8.0mm, and steel grade is cold-forging steel, hard wire steel, wire for steel cord of tyre, and blank is 142 * 142mm, 1000～1100 ℃ of rolling temperatures.
Embodiment 1: with two passage grooveless rolling methods is example:
| Shelf number | The pass type | Reduction ratio % | Absolute spread mm | Depth-width ratio | Lengthening coefficient |
| Blank | - | - | 1 | - | |
| 1H | Plain-barreled roll | 21.13 | 11.4 | 1.37 | 1.178 |
| 2V | Plain-barreled roll | 19.17 | 7.6 | 0.96 | 1.177 |
| 3H | Oval | 29.77 | 20.3 | -- | 1.411 |
| 4V | Circle | 29.31 | 8.9 | -- | 1.293 |
| 5H | Oval | 37.57 | 15 | -- | 1.432 |
| Shelf number | The pass type | Reduction ratio % | Absolute spread mm | Depth-width ratio | Lengthening coefficient |
| 6V | Circle | 36.07 | 11.82 | -- | 1.295 |
During by this scheme rolled wire, rolled piece is normal to the situation of nipping of the 3H frame that groove rolling is arranged from the 2V frame of grooveless rolling, the rolled piece section of roughing unit outlet has the situation of pass rolling mill practice the same stable with former employing, and the size section satisfies the rolling requirement of milling train group in the road, back fully.
Embodiment 2: four-pass grooveless rolling method
| Shelf number | The pass type | Reduction ratio % | Absolute spread mm | Depth-width ratio | Lengthening coefficient |
| Blank | -- | -- | 1 | -- | |
| 1H | Plain-barreled roll | 16.90 | 7.96 | 1.27 | 1.139 |
| 2V | Plain-barreled roll | 22.65 | 10.16 | 1.10 | 1.190 |
| 3H | Plain-barreled roll | 31.34 | 16.90 | 1.51 | 1.271 |
| 4V | Plain-barreled roll | 38.30 | 18.34 | 1.30 | 1.341 |
| 5H | Oval | 41.70 | 26.36 | -- | 1.538 |
| 6V | Circle | 30.97 | 10.5 | -- | 1.301 |
During by this scheme rolled wire, rolled piece is normal to the situation of nipping of the 5H frame that groove rolling is arranged from the 4V frame of grooveless rolling, the rolled piece section of roughing unit outlet has the situation of pass rolling mill practice the same stable with former employing, and the size section satisfies the rolling requirement of milling train group in the road, back fully.
3: six passage grooveless rollings of embodiment method
| Shelf number | The pass type | Reduction ratio % | Absolute spread mm | Depth-width ratio | Lengthening coefficient |
| Blank | -- | -- | 1 | -- | |
| 1H | Plain-barreled roll | 22.54 | 12.32 | 1.40 | 1.188 |
| 2V | Plain-barreled roll | 27.42 | 13.12 | 1.10 | 1.231 |
| Shelf number | The pass type | Reduction ratio % | Absolute spread mm | Depth-width ratio | Lengthening coefficient |
| 3H | Plain-barreled roll | 33.40 | 17.68 | 1.58 | 1.297 |
| 4V | Plain-barreled roll | 38.31 | 18.18 | 1.25 | 1.327 |
| 5H | Plain-barreled roll | 38.11 | 15.66 | 1.54 | 1.351 |
| 6V | Plain-barreled roll | 33.09 | 9.50 | 1.12 | 1.296 |
During by this scheme rolled wire, rolled piece is normal to the situation of nipping of the 7H frame that groove rolling is arranged from the 6V frame of grooveless rolling, the rolled piece section of roughing unit outlet has the situation of pass rolling mill practice the same stable with former employing, and the size section satisfies the rolling requirement of milling train group in the road, back fully.
Claims (4)
1. the grooveless rolling method of high-speed rod roughing unit, adopt two passage grooveless rollings or four-pass grooveless rolling or six passage grooveless rollings, the rolled piece depth-width ratio is 0.90～1.58, percentage pass reduction is 15%～45%, rolling temperature is 1000 ℃～1100 ℃, the blank scope is 120 * 120 millimeters～180 * 180 millimeters, and absolute spread coefficient scope is 0.25～0.45.
2. the grooveless rolling method of high-speed rod roughing unit as claimed in claim 1, it is characterized in that, adopt two passage grooveless rollings, the rolled piece depth-width ratio is 0.95～1.55, percentage pass reduction is 18%～30%, rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 140 * 140 millimeters～160 * 160 millimeters.
3. the grooveless rolling method of high-speed rod roughing unit as claimed in claim 1, it is characterized in that, adopt the four-pass grooveless rolling, the rolled piece depth-width ratio is 1.10～1.51, percentage pass reduction is 16%～40%, rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 120 * 120 millimeters～180 * 180 millimeters.
4. the grooveless rolling method of high-speed rod roughing unit as claimed in claim 1, it is characterized in that, adopt six passage grooveless rollings, the rolled piece depth-width ratio is 1.10～1.58, percentage pass reduction is 20%～40%, rolling temperature is 1000 ℃～1100 ℃, and blank accommodation is 120 * 120 millimeters～180 * 180 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101165030A CN101152654A (en) | 2006-09-26 | 2006-09-26 | Non-groove rolling method for high speed wire bar intermediate rolling train |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101165030A CN101152654A (en) | 2006-09-26 | 2006-09-26 | Non-groove rolling method for high speed wire bar intermediate rolling train |
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| CN101152654A true CN101152654A (en) | 2008-04-02 |
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| CNA2006101165030A Pending CN101152654A (en) | 2006-09-26 | 2006-09-26 | Non-groove rolling method for high speed wire bar intermediate rolling train |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564734B (en) * | 2009-05-27 | 2011-04-06 | 重庆钢铁(集团)有限责任公司 | High-speed wire finish-rolling process |
| CN102240672A (en) * | 2011-05-25 | 2011-11-16 | 西安盛日机电科技有限公司 | Process for producing high-speed wire rod by adopting grooveless rolling |
| CN103264047A (en) * | 2013-04-26 | 2013-08-28 | 首钢总公司 | Roughing method for improving surface quality of low-carbon steel wire rods |
| CN103341487A (en) * | 2013-07-01 | 2013-10-09 | 中冶赛迪工程技术股份有限公司 | High-speed wire rod compact type non-porous rolling production line and production method |
| CN104084421A (en) * | 2014-06-19 | 2014-10-08 | 西安盛日机电科技有限公司 | Production process for grooveless rolling of 82B wire rod by high-speed wire mill |
| CN104138898A (en) * | 2014-07-24 | 2014-11-12 | 内蒙古包钢钢联股份有限公司 | High-speed positive or negative deviation rolling method |
| 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 |
| CN109550781A (en) * | 2018-11-23 | 2019-04-02 | 云南玉溪仙福钢铁（集团）有限公司 | Roughing grooveless rolling method |
| CN109967533A (en) * | 2019-04-16 | 2019-07-05 | 一重集团大连工程技术有限公司 | A kind of accurate control method for rolling in Flat Die Steel corner |
| CN113351643A (en) * | 2021-04-23 | 2021-09-07 | 陕钢集团产业创新研究院有限公司 | Rolling method for rapidly switching 150 and 165 square billets in bar and wire steel rolling production |
-
2006
- 2006-09-26 CN CNA2006101165030A patent/CN101152654A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564734B (en) * | 2009-05-27 | 2011-04-06 | 重庆钢铁(集团)有限责任公司 | High-speed wire finish-rolling process |
| CN102240672A (en) * | 2011-05-25 | 2011-11-16 | 西安盛日机电科技有限公司 | Process for producing high-speed wire rod by adopting grooveless rolling |
| CN102240672B (en) * | 2011-05-25 | 2014-07-02 | 西安盛日机电科技有限公司 | Process for producing high-speed wire rod by adopting grooveless rolling |
| CN103264047A (en) * | 2013-04-26 | 2013-08-28 | 首钢总公司 | Roughing method for improving surface quality of low-carbon steel wire rods |
| CN103341487A (en) * | 2013-07-01 | 2013-10-09 | 中冶赛迪工程技术股份有限公司 | High-speed wire rod compact type non-porous rolling production line and production method |
| 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 |
| 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 |
| CN104084421A (en) * | 2014-06-19 | 2014-10-08 | 西安盛日机电科技有限公司 | Production process for grooveless rolling of 82B wire rod by high-speed wire mill |
| CN104138898A (en) * | 2014-07-24 | 2014-11-12 | 内蒙古包钢钢联股份有限公司 | High-speed positive or negative deviation rolling method |
| 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 |
| CN109550781A (en) * | 2018-11-23 | 2019-04-02 | 云南玉溪仙福钢铁（集团）有限公司 | Roughing grooveless rolling method |
| CN109967533A (en) * | 2019-04-16 | 2019-07-05 | 一重集团大连工程技术有限公司 | A kind of accurate control method for rolling in Flat Die Steel corner |
| CN109967533B (en) * | 2019-04-16 | 2020-06-16 | 一重集团大连工程技术有限公司 | Precise rolling control method for die flat steel corner |
| CN113351643A (en) * | 2021-04-23 | 2021-09-07 | 陕钢集团产业创新研究院有限公司 | Rolling method for rapidly switching 150 and 165 square billets in bar and wire steel rolling production |
| CN113351643B (en) * | 2021-04-23 | 2022-12-02 | 陕钢集团产业创新研究院有限公司 | Rolling method for rapidly switching 150 and 165 square billets in bar and wire steel rolling production |
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Open date: 20080402 |