CN102626717A - Elongation rate distribution method for high-strength steel straightening and leveling unit - Google Patents
Elongation rate distribution method for high-strength steel straightening and leveling unit Download PDFInfo
- Publication number
- CN102626717A CN102626717A CN2012101079238A CN201210107923A CN102626717A CN 102626717 A CN102626717 A CN 102626717A CN 2012101079238 A CN2012101079238 A CN 2012101079238A CN 201210107923 A CN201210107923 A CN 201210107923A CN 102626717 A CN102626717 A CN 102626717A
- Authority
- CN
- China
- Prior art keywords
- breaking elongation
- setting value
- planisher
- distributed
- straightener
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to an elongation rate distribution method for a high-strength steel straightening and leveling unit. The method is characterized by comprising the following steps of: controlling the total elongation rate of high-strength steel at a process section of the straightening and leveling unit according to the product deformation characteristic in a hot-rolling processing process and the processing characteristics and control stability of the straightening machine and the leveling machine; proportionally distributing a total elongation rate set value to the straightening machine and the leveling machine for presetting straightening and leveling processes; fully lowering the residual stress level of hot-rolled high-strength steel under the reciprocating bending action of the straightening machine; and effectively controlling the final performance of the high-strength steel by using the real-time dynamic adjusting capability of the leveling machine. According to the method, the internal residual stress level of band steel after hot rolling can be lowered fully, the yield strength of the hot-rolled high-strength steel is controlled effectively, and the performance quality of a product is ensured.
Description
Technical field
The invention belongs to the smooth technical field of hot-rolling high-strength steel, be specifically related to elongation control and distribution method that a kind of hot-rolling high-strength steel is aligned smooth unit, can be applicable to all kinds of high-strength steel hot-rolled leveling units.
Background technology
Generally adopt the hot-rolled leveling unit to carry out the deep processing of hot-rolled product traditionally, with glacing flatness precision, thickness and precision and the surface quality of effective lifting hot-rolled product.But for the high-strength steel product, in preceding operation hot rolling process, because distortion and be heated inhomogeneously, the inner residual stress level of the high-strength steel product that causes is far above common hot-rolled product.Therefore, after the processing of hot-rolled leveling unit, the inner residual stress of high-strength steel product still remains on the higher level, in following process, causes many quality problems.Therefore, for hot-rolling high-strength steel, be badly in need of deep process and the corresponding unit control method of development, with the product quality of effective lifting high-strength steel product to the high-strength steel characteristics.
Summary of the invention
The technical problem that the present invention will solve is; Provide a kind of high-strength steel that is applied to high-strength steel aligning flattening process to align smooth unit percentage elongation distribution method; Be with the inner residual stress level of steel after can fully reducing hot rolling; Effectively the yield strength of control hot-rolling high-strength steel guarantees the performance of products quality.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
High-strength steel is aligned smooth unit percentage elongation distribution method, and described unit comprises straightener and the planisher that high-strength steel passes through successively; It is characterized in that: according to the processing characteristic and the control stability of product deformation behaviour, straightener and planisher in the hot rolling process; Set process section high-strength steel breaking elongation; And the breaking elongation setting value pro rata distributed to straightener and planisher; According to apportioning cost planisher and straightener are aligned flattening process and preset, and in the aligning formation process, carry out process section high-strength steel breaking elongation and dynamically control, guarantee that the process section breaking elongation is constant aligning smooth unit.
By technique scheme, said aligning flattening process presets and comprises: the breaking elongation setting value is pro rata distributed to straightener, adopted the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation setting value is distributed to planisher, be rolled power through rolling Force control system and preset.
By technique scheme; Described breaking elongation dynamically is controlled to be: when deviation occurring between high-strength steel breaking elongation after the detected processing and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher, the roll-force adjustment through planisher guarantees process section end high-strength steel product breaking elongation.
By technique scheme, 70% ~ 90% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
By technique scheme, 85% ~ 90% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
By technique scheme, 80% ~ 85% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
By technique scheme, 75% ~ 80% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
By technique scheme, 70% ~ 75% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
By technique scheme, 80% of breaking elongation setting value is distributed to straightener, 20% of breaking elongation setting value is distributed to planisher.
Principle of the present invention is: carry out the control of process section high-strength steel breaking elongation to aligning smooth unit; The yield strength that is allowed according to process section end product is set the breaking elongation setting value of unit; The breaking elongation setting value is pro rata distributed to straightener, adopted the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation setting value is distributed to planisher to be rolled power and to preset; And the turning, clamping and conveying roller and the speed measuring coder on the outlet turning, clamping and conveying roller that the utilize unit inlet breaking elongation after to high-strength steel processing detects control; And carry out breaking elongation and dynamically control: when deviation occurring between the breaking elongation of aligning the flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher; Roll-force adjustment through planisher guarantees that the process section breaking elongation is constant; The actual breaking elongation in established technology section end equals the breaking elongation setting value; And then when the cyclic bending effect that utilizes straightener fully reduces the residual stress level of hot-rolling high-strength steel, utilize the Real-time and Dynamic adjustment capability of planisher effectively to control the yield strength of hot-rolling high-strength steel, guarantee the performance of products quality.
With respect to prior art, the invention has the beneficial effects as follows:
Adopting the aligning flattening process to carry out in the deep process of high-strength steel thin slab product; Processing characteristic and control stability according to product deformation behaviour, straightener and planisher in the hot rolling process; Carry out the control of process section high-strength steel breaking elongation to aligning smooth unit, the breaking elongation setting value is pro rata distributed to straightener and planisher; Utilize the cyclic bending effect of straightener fully to reduce the residual stress level of hot-rolling high-strength steel, utilize the Real-time and Dynamic adjustment capability of planisher effectively to control the yield strength of hot-rolling high-strength steel, to guarantee the performance of products quality.
Description of drawings:
Fig. 1: the high-strength steel of implementing according to the present invention is aligned smooth unit structural representation.
Among the figure: the 1-uncoiler; The 2-turning, clamping and conveying roller (being provided with speed measuring coder) that enters the mouth; The 3-straightener; The 4-planisher; 5-outlet turning, clamping and conveying roller (being provided with speed measuring coder); 6-is with steel; The 7-coiling machine
The specific embodiment:
Below in conjunction with embodiment and accompanying drawing the present invention is described further, but does not limit the present invention.
Embodiment 1:
High-strength steel is aligned smooth unit percentage elongation distribution method; Described unit mainly comprises straightener and planisher; It is characterized in that: according to the processing characteristic and the control stability of product deformation behaviour, straightener and planisher in the hot rolling process; Carry out the control of process section high-strength steel breaking elongation to aligning smooth unit; The breaking elongation setting value pro rata distributed align flattening process to straightener and planisher and preset, utilize the cyclic bending effect of straightener fully to reduce the residual stress level of hot-rolling high-strength steel, utilize the Real-time and Dynamic adjustment capability of planisher effectively to control the final performance of high-strength steel.
Embodiment 2:
On the basis of embodiment 1, set the breaking elongation of unit according to the needed yield strength of process section end high-strength steel product; Subsequently, the breaking elongation setting value pro rata distributed align flattening process to straightener and planisher and preset, adopt the mode that presets to set the compression distance of straightener top roll, be rolled power through rolling Force control system and preset; Afterwards, utilize high-strength steel breaking elongation after unit entrance and exit velocity measuring device detects processing in real time; At last; High-strength steel breaking elongation after the detected processing and breaking elongation setting value are compared; The roll-force of Real-time and Dynamic adjustment planisher guarantees process section end high-strength steel product breaking elongation; When utilizing straightener to reduce the high-strength steel residual stress level, guarantee process section end high-strength steel performance of products quality.
Between unit inlet turning, clamping and conveying roller 2 (band speed measuring coders) and outlet turning, clamping and conveying roller 5 (band speed measuring coder), arrange straightener 3 and 4 two equipment of planisher; Utilize the forward and reverse flecition of straightener 3, fully reduce the residual stress level of hot-rolling high-strength steel; Utilize the Real-time and Dynamic adjustment function of planisher 4 effectively to control the breaking elongation after product is processed, to guarantee the performance quality after hot-rolling high-strength steel is processed.
Yield strength according to process section end product is allowed is set the breaking elongation setting value of unit, and utilizes the turning, clamping and conveying roller 2 of unit inlet and the speed measuring coder on the outlet turning, clamping and conveying roller 5 to detect control to being with the breaking elongation after steel is processed.Concrete control method is following: the breaking elongation setting value is pro rata distributed to straightener 3, adopted the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation setting value is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 3: on the basis of the foregoing description 1 or 2,80% of breaking elongation setting value is distributed to straightener 3, adopt the mode that presets to set the compression distance of straightener top roll; 20% of breaking elongation setting value is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 4: on the basis of the foregoing description 1 or 2, with breaking elongation 85% ~ 90%, distribute to straightener 3 as 86%, 87% or 88%, adopt the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 5: on the basis of the foregoing description 1 or 2, with breaking elongation 80% ~ 85%, distribute to straightener 3 as 81%, 83% or 84%, adopt the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 6: on the basis of the foregoing description 1 or 2, with breaking elongation 75% ~ 80%, distribute to straightener 3 as 76%, 77% or 79%, adopt the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 7: on the basis of the foregoing description 1 or 2,70% ~ 75% of breaking elongation is distributed to straightener 3, adopt the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Embodiment 8: on the basis of the foregoing description 1 or 2,70% ~ 90% of breaking elongation is distributed to straightener 3, adopt the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation is distributed to planisher 4 to be rolled power and to preset; When deviation occurring between breaking elongation after the band steel processing of aligning flattening process section and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher 4; Roll-force adjustment through planisher 4 guarantees the stable of process section breaking elongation; And then when fully reducing band residual stress of steel level, guarantee the performance of products quality.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalence of therefore doing according to claim of the present invention changes, and still belongs to protection scope of the present invention.
Claims (9)
1. high-strength steel is aligned smooth unit percentage elongation distribution method, and described unit comprises straightener and the planisher that high-strength steel passes through successively; It is characterized in that: according to the processing characteristic and the control stability of product deformation behaviour, straightener and planisher in the hot rolling process; Set process section high-strength steel breaking elongation; And the breaking elongation setting value pro rata distributed to straightener and planisher; According to apportioning cost planisher and straightener are aligned flattening process and preset, and in the aligning formation process, carry out process section high-strength steel breaking elongation and dynamically control, guarantee that the process section breaking elongation is constant aligning smooth unit.
2. percentage elongation distribution method according to claim 1 is characterized in that: said aligning flattening process presets and comprises: the breaking elongation setting value is pro rata distributed to straightener, adopted the mode that presets to set the compression distance of straightener top roll; The remaining proportion of breaking elongation setting value is distributed to planisher, be rolled power through rolling Force control system and preset.
3. percentage elongation distribution method according to claim 1 and 2; It is characterized in that: described breaking elongation dynamically is controlled to be: when deviation occurring between high-strength steel breaking elongation after the detected processing and the breaking elongation setting value; Just deviation signal is fed back to the rolling Force control system of planisher, the roll-force adjustment through planisher guarantees process section end high-strength steel product breaking elongation.
4. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 70% ~ 90% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
5. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 85% ~ 90% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
6. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 80% ~ 85% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
7. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 75% ~ 80% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
8. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 70% ~ 75% of breaking elongation setting value is distributed to straightener, the remaining proportion of breaking elongation setting value is distributed to planisher.
9. according to the described percentage elongation distribution method of one of claim 1-3, it is characterized in that: 80% of breaking elongation setting value is distributed to straightener, 20% of breaking elongation setting value is distributed to planisher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210107923.8A CN102626717B (en) | 2012-04-13 | 2012-04-13 | Elongation rate distribution method for high-strength steel straightening and leveling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210107923.8A CN102626717B (en) | 2012-04-13 | 2012-04-13 | Elongation rate distribution method for high-strength steel straightening and leveling unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102626717A true CN102626717A (en) | 2012-08-08 |
| CN102626717B CN102626717B (en) | 2014-08-13 |
Family
ID=46585216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210107923.8A Active CN102626717B (en) | 2012-04-13 | 2012-04-13 | Elongation rate distribution method for high-strength steel straightening and leveling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102626717B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820098A (en) * | 2012-08-29 | 2012-12-12 | 江苏国能电力设备有限公司 | Enhancing unit for yield strength of copper wire |
| CN103076778A (en) * | 2012-12-27 | 2013-05-01 | 鞍钢集团自动化公司 | Dynamic distribution and automatic control system for cold-rolling hydrochloric acid pickling line outlet ductility |
| CN106560274A (en) * | 2015-10-02 | 2017-04-12 | 材料制造有限公司 | Cut-to-length Steel Coil Processing Line And Method Used For Processing Steel Coil In Same |
| CN109174978A (en) * | 2018-08-29 | 2019-01-11 | 马鞍山钢铁股份有限公司 | A kind of calculation method overcoming planisher elongation percentage measurement defect |
| CN109332386A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of finely finishing method improving hot-strip straightness |
| CN114178347A (en) * | 2021-11-23 | 2022-03-15 | 中冶南方工程技术有限公司 | Strip steel leveling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141308A (en) * | 1995-11-16 | 1997-06-03 | Nisshin Steel Co Ltd | Saw edge preventing method for cold rolled steel strip |
| CN101513647A (en) * | 2008-02-22 | 2009-08-26 | 宝山钢铁股份有限公司 | Method for leveling strip produced by secondary cold rolling unit |
| CN101585058A (en) * | 2008-05-22 | 2009-11-25 | 上海精翔实业有限公司 | Band steel stretch-bending straightening system capable of controlling elongation rate and control method thereof |
-
2012
- 2012-04-13 CN CN201210107923.8A patent/CN102626717B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141308A (en) * | 1995-11-16 | 1997-06-03 | Nisshin Steel Co Ltd | Saw edge preventing method for cold rolled steel strip |
| CN101513647A (en) * | 2008-02-22 | 2009-08-26 | 宝山钢铁股份有限公司 | Method for leveling strip produced by secondary cold rolling unit |
| CN101585058A (en) * | 2008-05-22 | 2009-11-25 | 上海精翔实业有限公司 | Band steel stretch-bending straightening system capable of controlling elongation rate and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘现翠等: "宝钢2030酸洗机组中拉矫机和平整机的延伸率分配", 《北京科技大学学报》, vol. 27, no. 5, 31 October 2005 (2005-10-31) * |
| 王亚杰等: "1450mm平整辣椒机组系统张力及延伸率控制", 《电气传动》, vol. 39, no. 6, 31 December 2009 (2009-12-31) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820098A (en) * | 2012-08-29 | 2012-12-12 | 江苏国能电力设备有限公司 | Enhancing unit for yield strength of copper wire |
| CN103076778A (en) * | 2012-12-27 | 2013-05-01 | 鞍钢集团自动化公司 | Dynamic distribution and automatic control system for cold-rolling hydrochloric acid pickling line outlet ductility |
| CN106560274A (en) * | 2015-10-02 | 2017-04-12 | 材料制造有限公司 | Cut-to-length Steel Coil Processing Line And Method Used For Processing Steel Coil In Same |
| CN109174978A (en) * | 2018-08-29 | 2019-01-11 | 马鞍山钢铁股份有限公司 | A kind of calculation method overcoming planisher elongation percentage measurement defect |
| CN109332386A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方工程技术有限公司 | A kind of finely finishing method improving hot-strip straightness |
| CN114178347A (en) * | 2021-11-23 | 2022-03-15 | 中冶南方工程技术有限公司 | Strip steel leveling method |
| CN114178347B (en) * | 2021-11-23 | 2023-11-21 | 中冶南方工程技术有限公司 | Strip steel leveling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102626717B (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102626726B (en) | Straightening and leveling process for hot-rolled high-strength steel | |
| CN102626717B (en) | Elongation rate distribution method for high-strength steel straightening and leveling unit | |
| CN101716618A (en) | Method for penetrating straightening steel plate of thermal straightening machine | |
| CN105290159B (en) | Chill belt plate shape straightening process | |
| CN104889160B (en) | A kind of multidirectional predeformation milling method of wide magnesium alloy slab edge | |
| CN102266866B (en) | Technology for producing hot-rolled pipeline steel of roll mill with single frame furnace | |
| CN105983583B (en) | A kind of throwing steel method of constant width machine outlet pinch roll | |
| CN104889175B (en) | Tension setting method for improving leveling stability and product surface quality | |
| CN106475424A (en) | A kind of control method of Hot Rolling Strip sideslip | |
| KR20080005350A (en) | Process and device for intentionally influencing the geometry of roughed-down strips in a roughing-down stand | |
| CN103203374B (en) | A kind of scaling method of hot-rolled coiler pinch roll | |
| CN201735640U (en) | Stretch-bend straightening machine for metal bar stock | |
| CN104438458A (en) | Straightening method of head turning steel plate | |
| CN103223423B (en) | Control method for walking-stopping type high-side-pressure sizing press | |
| CN106475423B (en) | A kind of Minimal Tension threading control method of cold-rolled orientation silicon steel thin plate | |
| CN104043684A (en) | Dynamic load distributing system and method for tension roller group of rewinding withdrawal and straightening machine | |
| CN105983581B (en) | The multiple side pressure method of constant width machine | |
| CN102974624A (en) | Edge plane shape control method of large-expansion-ratio high strength grade pipeline steel | |
| CN102626718B (en) | Control method for high-strength steel straightening and leveling unit | |
| CN105268747A (en) | Hot rolled strip convexity on-line closed loop control method | |
| CN108714628A (en) | A kind of control method of belt plate shape | |
| CN102284509A (en) | Method for comprehensively and optimally setting tension of six-roller leveling machine unit | |
| CN106391760B (en) | A kind of straightening process for clapboard | |
| CN109772894B (en) | Strip steel width control method for hot rolling wedge-shaped blank | |
| CN102962253A (en) | 5-millimeter steel plate rolling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |