CN108397681A - Longitudinal special-shaped section steel plate and production method thereof - Google Patents
Longitudinal special-shaped section steel plate and production method thereof Download PDFInfo
- Publication number
- CN108397681A CN108397681A CN201710068866.XA CN201710068866A CN108397681A CN 108397681 A CN108397681 A CN 108397681A CN 201710068866 A CN201710068866 A CN 201710068866A CN 108397681 A CN108397681 A CN 108397681A
- Authority
- CN
- China
- Prior art keywords
- thickness
- steel plate
- transition
- section
- rolling
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 68
- 230000007704 transition Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000013178 mathematical model Methods 0.000 claims description 3
- 238000009751 slip forming Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000012797 qualification Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S1/00—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members
- F16S1/12—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members of substantial thickness, e.g. with varying thickness, with channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S1/00—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members
- F16S1/04—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members produced by deforming or otherwise working a flat sheet
- F16S1/06—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members produced by deforming or otherwise working a flat sheet by deforming only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2205/00—Particular shaped rolled products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
- B21B2261/043—Blanks with variable thickness in the rolling direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a longitudinal special-shaped section steel plate and a production method thereof, wherein the longitudinal special-shaped section steel plate comprises a first gradient section, a second gradient section and a first equal-thickness section and a second gradient section which are continuously formed by rolling and have the total length of L, the lower surfaces of the first gradient section, the second equal-thickness section and the second gradient section are a plane, the upper surfaces of the first gradient section, the second equal-thickness section and the second gradient section are continuous and smooth transition surfaces, the upper surface of the middle-thickness section is a plane, and the upper surfaces of the first gradient section and the second gradient section are curved surfaces.
Description
Technical field
The present invention relates to longitudinal variable-thickness (LP) Plate Production technical field more particularly to a kind of longitudinal odd-shaped cross section steel plates
And its production method.
Background technology
Longitudinal variable-thickness (LP) steel plate refers to steel plate with special longitudinal shape of the thickness along rolling direction consecutive variations,
It is to change the longitudinal thickness of steel plate by continuously changing the opening degree of roll during the rolling process.Due to longitudinal thickness-variable steel plate
Its thickness can be changed according to load bearing situation, thus the design of the structure sections such as bridge, hull, building can be optimized, no
Can only reduce rolled steel dosage, reduce welding times, and can by the uniform thicknessization of junction improve operability, such as omit backing plate and
Taper WEDM etc..
Paper that Tsinghua University doctor Liu Xiaoling etc. writes " engineer application of longitudinal variable-thickness (LP) steel plate and study into
Exhibition ", it includes the life of the enterprises such as France, Japan, Dillingen, Germany, Czech and Baosteel, Hebei steel, Anshan iron and steel plant both at home and abroad to disclose
Production, the main Types for designing LP steel plates, as shown in the table：
But the LP plate profiles of these types can not fully meet the needs of Practical Project, and existing LP steel plates
Thickness change range is small, limits its use scope.
Application No. is the Chinese patent of CN200910175208.6, a kind of " thickness for rolling wedge-shaped steel plate is disclosed
Control method ", the operation of rolling are that preceding several passages are rolled according to conventional rectangular steel plate rolling technology, and extreme trace is controlled by TDC
Device controls the variation of rolling mill hydraulic cylinder oil column height, continuous to change roll gap distance, realizes the consecutive variations of steel plate longitudinal thickness, due to
This method is time to roll out lateral wedge-shaped steel plate in the extreme trace of rolling, that is, only complete wedge-shaped steel plate by a time rolling
Rolling, necessarily causes its thickness change range smaller, the poor problem of steel plate template.
Application No. is the Chinese patent of CN201310227028.4, a kind of " transverse wedge-shaped rolled thickness-variable steel plate is disclosed
Production method ", including 1) cross rolling：In transverse rolling stage end passes, according to steel plate head and tail portion average thickness
Setting value carries out longitudinal variable cross-section rolling to steel plate；2) longitudinal rolling；First, it in the axial rolling stage, is generated according to the transverse rolling stage
Longitudinal variable-thickness value carries out lateral equal proportion wedge rolling end to end；Then, influence function method is used according to rolling procedure distribution
It determines roll gap adjustment amount and bending roller force setting value, ensures that the transverse gage distribution of axial rolling passage meets the requirement of equal proportion wedge shape.By
It is to roll out lateral wedge-shaped steel plate in the extreme trace time setting roll gap parameter of cross rolling in this method, necessarily leads to its thickness change
Range is smaller, and steel plate template is poor and correction can not be carried out on straightener causes useless plate rate to increase.
Application No. is the Chinese patent of CN200610046457.1, a kind of " continuous rolling side of variable-thickness steel plate is disclosed
Method ", first steel plate respectively reserve certain allowance end to end, and to shut out minimum thickness, rolled piece precomputation is calculated according to rolling force model
Plastic curve determines the roll gap of roll then in conjunction with mill spring curve, is then rolled under the roll gap；It is rolled on head
It calculates in the process and shuts out length, until shutting out length is equal to L；After the completion of the transition stage rolling of head, continues Varying-thickness and roll
System；According to the variation of variable thickness rolled length, roll gap is adjusted correspondingly；The rolling process persistently carries out, until thickeing
Degree section shuts out length and is equal to L, and the thickness of rolled piece has transferred to maximum gauge at this time, carries out tail portion rolling later, based on estimated
Deviation existing for plastic curve and practical plastic curve is calculated, in the operation of rolling of tail portion, according to the practical difference for calculating exit thickness
Not, by adjusting the position of roll gap, tail portion thickness deviation is eliminated, until tail portion rolling is completed.Use the method for the present invention can be with
Conveniently technique continuous rolling variable-thickness steel plate.This method is rolled using segmented, can be caused in actually producing in batches
Low production efficiency controls the disadvantage for stablizing difference.
Invention content
The present invention provides a kind of longitudinal odd-shaped cross section steel plate and its production method, the longitudinal direction odd-shaped cross section steel plate uses
Distinctive planform, length and thickness selectable range are big, and strong applicability can reduce extension in practical engineering application
The processing capacity and welding job amount of the structural steels beam such as beam, and node strength can be increased, improve connection reliability；Its production process
Simply, controllability is strong, and finished product template qualification rate is high, and surface quality and mechanical performance are satisfied by requirement.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of longitudinal direction odd-shaped cross section steel plate includes through rolling the transition one that continuously shaped and overall length is L, uniform thickness section and gradually
Become section two, the lower surface of the transition one, uniform thickness section and transition two is a flat surface, and upper surface is continuous and seamlessly transits table
Face；Wherein the upper surface of uniform thickness section is plane, and the upper surface of transition one and transition two is curved surface；The length of uniform thickness section is
L0, thickness H0；The length of transition one is L1, thickness is by H1To H0Even transition, H1＞ H0；The length of transition two is L2,
Its thickness is by H0To H2Even transition, H2＞ H0。
Overall length L=2000~the 50000mm.
The H0=8~100mm.
The H1=50~150mm, H2=50~150mm.
A kind of production method of longitudinal odd-shaped cross section steel plate, includes the following steps：
1) heating steel billet technique：Billet heating temperature scope control is at 1120~1180 DEG C, and upper surface temperature compares following table
Face temperature is 20~30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1020~1080 DEG C, and finishing temperature control is at 980~1020 DEG C；Rolling
Total reduction >=40%, single pass reduction ratio >=5%；；Steel plate rolling speed control is in 3.5~5.0m/s；
When rolling starts, the self study coefficient of mathematical model is adjusted according to the actual (real) thickness of steel plate；Specially：Pass through thickness
Measuring instrument measures the actual (real) thickness of steel plate, then measured actual (real) thickness is compared with theoretic throat to obtain self study system
Number, is modified the zero in mill rolling force preset model with self study coefficient；The value range of self study coefficient is：
When steel plate thickness is 5 ＜ t≤50mm, self study coefficient is 0.05~0.15；
When steel plate thickness is 50 ＜ t≤120mm, self study coefficient is 0.16~0.35；
When steel plate thickness t ＞ 120mm, self study coefficient is 0.4；
4) cooling technique：The beginning of cooling temperature is 890~920 DEG C, and red temperature is 550~650 DEG C；Cooling velocity is 5
~10 DEG C/s.
Compared with prior art, the beneficial effects of the invention are as follows：
1) longitudinal odd-shaped cross section steel plate uses distinctive planform, and length and thickness selectable range are big, are applicable in
Property is strong；
2) processing capacity and welding job amount of the structural steels beam such as extending beam can be reduced in practical engineering application, and can be increased
Add node strength, improves connection reliability；
3) production process of longitudinal odd-shaped cross section steel plate is simple, and controllability is strong, and finished product template qualification rate is high, surface quality and
Mechanical performance is satisfied by requirement.
Description of the drawings
Fig. 1 is the structural schematic diagram of longitudinal odd-shaped cross section steel plate of the present invention.
In figure：1. one 2. uniform thickness section of transition, 3. transition two
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of longitudinal odd-shaped cross section steel plate of the present invention, including through rolling continuously shaped and overall length as L
Transition 1, uniform thickness section 2 and transition 23, the lower surface of the transition 1, uniform thickness section 2 and transition 23 is one flat
Face, upper surface are continuous and smooth transition surface；Wherein the upper surface of uniform thickness section 2 is plane, transition 1 and transition 23
Upper surface be curved surface；The length of uniform thickness section 2 is L0, thickness H0；The length of transition 1 is L1, thickness is by H1To H0
Even transition, H1＞ H0；The length of transition 23 is L2, thickness is by H0To H2Even transition, H2＞ H0。
Overall length L=2000~the 50000mm.
The H0=8~100mm.
H1=50~150mm, H2=50~150mm.
A kind of production method of longitudinal odd-shaped cross section steel plate, includes the following steps：
1) heating steel billet technique：Billet heating temperature scope control is at 1120~1180 DEG C, and upper surface temperature compares following table
Face temperature is 20~30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1020~1080 DEG C, and finishing temperature control is at 980~1020 DEG C；Rolling
Total reduction >=40%, single pass reduction ratio >=5%；；Steel plate rolling speed control is in 3.5~5.0m/s；
When rolling starts, the self study coefficient of mathematical model is adjusted according to the actual (real) thickness of steel plate；Specially：Pass through thickness
Measuring instrument measures the actual (real) thickness of steel plate, then measured actual (real) thickness is compared with theoretic throat to obtain self study system
Number, is modified the zero in mill rolling force preset model with self study coefficient；The value range of self study coefficient is：
When steel plate thickness is 5 ＜ t≤50mm, self study coefficient is 0.05~0.15；
When steel plate thickness is 50 ＜ t≤120mm, self study coefficient is 0.16~0.35；
When steel plate thickness t ＞ 120mm, self study coefficient is 0.4；
4) cooling technique：The beginning of cooling temperature is 890~920 DEG C, and red temperature is 550~650 DEG C；Cooling velocity is 5
~10 DEG C/s.
Following embodiment is being implemented down based on the technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
It is conventional method not mentionlet alone bright.
【Embodiment 1】
5500mm heavy and medium plate mills are used to roll steel grade as longitudinal odd-shaped cross section steel plate of Q345B, longitudinal section shape
As shown in Figure 1, specific size is：
H0=8mm, H1=40mm, H2=50mm, steel plate overall length L=50000mm, wherein one 1 length L of transition1=
8000mm, 23 length L of transition2=8500mm.
The production method of longitudinal odd-shaped cross section steel plate is as follows in the present embodiment：
1) heating steel billet technique：Billet heating temperature scope control is at 1120~1150 DEG C, and upper surface temperature compares following table
Face temperature is 30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1020 DEG C, and finishing temperature control is at 980 DEG C；Rolling total reduction is
40%, single pass reduction ratio is 5%；Steel plate rolling speed control is in 3.5m/s；
When rolling starts, the actual (real) thickness of steel plate is measured by thickness measurement equipment, then by measured actual (real) thickness and reason
It is compared to obtain self study coefficient by thickness, the zero in mill rolling force preset model is repaiied with self study coefficient
Just；Self study coefficient is 0.05~0.15；
4) cooling technique：The beginning of cooling temperature is 890 DEG C, and red temperature is 550 DEG C；Cooling velocity is 5 DEG C/s.
According to the longitudinal thickness-variable steel plate that above-mentioned production technology and technical parameter produce, plate shape qualification rate reaches 96.7%,
Properties percent of pass is 99.2%, and surface quality is good.
【Embodiment 2】
5500mm heavy and medium plate mills are used to roll steel grade as longitudinal odd-shaped cross section steel plate of Q345B, longitudinal section shape
As shown in Figure 1, specific size is：
H0=120mm, H1=150mm, H2=150mm, steel plate overall length L=12000mm, wherein one 1 length L of transition1=
2500mm, 23 length L of transition2=2500mm.
The production method of longitudinal odd-shaped cross section steel plate is as follows in the present embodiment：
1) heating steel billet technique：Billet heating temperature scope control is at 1130~1170 DEG C, and upper surface temperature compares following table
Face temperature is 30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1030 DEG C, and finishing temperature control is at 990 DEG C；Total reduction 45% is rolled,
Single pass reduction ratio 5%；Steel plate rolling speed control is in 4.0m/s；
When rolling starts, the actual (real) thickness of steel plate is measured by thickness measurement equipment, then by measured actual (real) thickness and reason
It is compared to obtain self study coefficient by thickness, the zero in mill rolling force preset model is repaiied with self study coefficient
Just；Self study coefficient is 0.4；
4) cooling technique：The beginning of cooling temperature is 900 DEG C, and red temperature is 580 DEG C；Cooling velocity is 6 DEG C/s.
According to the longitudinal thickness-variable steel plate that above-mentioned production technology and technical parameter produce, plate shape qualification rate reaches 96.6%,
Properties percent of pass is 99.4%, and surface quality is good.
【Embodiment 3】
5500mm heavy and medium plate mills are used to roll steel grade as longitudinal odd-shaped cross section steel plate of Q345B, longitudinal section shape
As shown in Figure 1, specific size is：
H0=52mm, H1=72mm, H2=80mm, steel plate overall length L=20000mm, wherein one 1 length L of transition1=
3000mm, 23 length L of transition2=3500mm.
The production method of longitudinal odd-shaped cross section steel plate is as follows in the present embodiment：
1) heating steel billet technique：Billet heating temperature scope control is at 1130~1150 DEG C, and upper surface temperature compares following table
Face temperature is 30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1040 DEG C, and finishing temperature control is at 1000 DEG C；Roll total reduction
50%, single pass reduction ratio is 5%；Steel plate rolling speed control is in 4.5m/s；
When rolling starts, the actual (real) thickness of steel plate is measured by thickness measurement equipment, then by measured actual (real) thickness and reason
It is compared to obtain self study coefficient by thickness, the zero in mill rolling force preset model is repaiied with self study coefficient
Just；Self study coefficient is 0.16~0.35；
4) cooling technique：The beginning of cooling temperature is 900 DEG C, and red temperature is 600 DEG C；Cooling velocity is 8 DEG C/s.
According to the longitudinal thickness-variable steel plate that above-mentioned production technology and technical parameter produce, plate shape qualification rate reaches 97.2%,
Properties percent of pass is 99.5%, and surface quality is good.
【Embodiment 4】
5500mm heavy and medium plate mills are used to roll steel grade as longitudinal odd-shaped cross section steel plate of Q345B, longitudinal section shape
As shown in Figure 1, specific size is：
H0=60mm, H1=80mm, H2=80mm, steel plate overall length L=25000mm, wherein one 1 length L of transition1=
2000mm, 23 length L of transition2=3000mm.
The production method of longitudinal odd-shaped cross section steel plate is as follows in the present embodiment：
1) heating steel billet technique：Billet heating temperature scope control is at 1150~1180 DEG C, and upper surface temperature compares following table
Face temperature is 30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1080 DEG C, and finishing temperature control is at 1020 DEG C；Roll total reduction
42%, single pass reduction ratio >=6%；Steel plate rolling speed control is in 5.0m/s；
When rolling starts, the actual (real) thickness of steel plate is measured by thickness measurement equipment, then by measured actual (real) thickness and reason
It is compared to obtain self study coefficient by thickness, the zero in mill rolling force preset model is repaiied with self study coefficient
Just；Self study coefficient is 0.16~0.35；
4) cooling technique：The beginning of cooling temperature is 920 DEG C, and red temperature is 650 DEG C；Cooling velocity is 10 DEG C/s.
According to the longitudinal thickness-variable steel plate that above-mentioned production technology and technical parameter produce, plate shape qualification rate reaches 96.8%,
Properties percent of pass is 99.2%, and surface quality is good.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of longitudinal direction odd-shaped cross section steel plate, which is characterized in that include through roll transition one that continuously shaped and overall length is L,
Uniform thickness section and transition two, the lower surface of the transition one, uniform thickness section and transition two are a flat surface, upper surface be it is continuous and
Smooth transition surface；Wherein the upper surface of uniform thickness section is plane, and the upper surface of transition one and transition two is curved surface；Uniform thickness section
Length be L0, thickness H0；The length of transition one is L1, thickness is by H1To H0Even transition, H1＞ H0；Transition two
Length is L2, thickness is by H0To H2Even transition, H2＞ H0。
2. a kind of longitudinal odd-shaped cross section steel plate according to claim 1, which is characterized in that the overall length L=2000~
50000mm。
3. a kind of longitudinal odd-shaped cross section steel plate according to claim 1, which is characterized in that the H0=8~100mm.
4. a kind of longitudinal odd-shaped cross section steel plate according to claim 1, which is characterized in that the H1=50~150mm, H2
=50~150mm.
5. a kind of production method of longitudinal section steel plate as described in claim 1, which is characterized in that include the following steps：
1) heating steel billet technique：Billet heating temperature scope control is at 1120~1180 DEG C, and upper surface temperature is than lower surface temperature
It spends 20~30 DEG C high；
2) after steel billet is come out of the stove, the high-pressure water descaling through pressure >=20MPa；
3) rolling mill practice：Start rolling temperature is controlled at 1020~1080 DEG C, and finishing temperature control is at 980~1020 DEG C；Roll stagnation pressure
Lower rate >=40%, single pass reduction ratio >=5%；；Steel plate rolling speed control is in 3.5~5.0m/s；
When rolling starts, the self study coefficient of mathematical model is adjusted according to the actual (real) thickness of steel plate；Specially：Pass through thickness measure
Instrument measures the actual (real) thickness of steel plate, then measured actual (real) thickness is compared with theoretic throat to obtain self study coefficient, use
Self study coefficient is modified the zero in mill rolling force preset model；The value range of self study coefficient is：
When steel plate thickness is 5 ＜ t≤50mm, self study coefficient is 0.05~0.15；
When steel plate thickness is 50 ＜ t≤120mm, self study coefficient is 0.16~0.35；
When steel plate thickness t ＞ 120mm, self study coefficient is 0.4；
4) cooling technique：The beginning of cooling temperature is 890~920 DEG C, and red temperature is 550~650 DEG C；Cooling velocity is 5~10
℃/s。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068866.XA CN108397681A (en) | 2017-02-08 | 2017-02-08 | Longitudinal special-shaped section steel plate and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068866.XA CN108397681A (en) | 2017-02-08 | 2017-02-08 | Longitudinal special-shaped section steel plate and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397681A true CN108397681A (en) | 2018-08-14 |
Family
ID=63093883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710068866.XA Pending CN108397681A (en) | 2017-02-08 | 2017-02-08 | Longitudinal special-shaped section steel plate and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620398A (en) * | 2021-03-10 | 2021-04-09 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59189004A (en) * | 1983-04-11 | 1984-10-26 | Nippon Kokan Kk <Nkk> | Manuacture of differential thickness plate and its rolling mill |
| CN101400457A (en) * | 2006-03-15 | 2009-04-01 | 西门子公司 | Rolling method for rolled material for introducing a step in the rolled material |
| CN101607267A (en) * | 2009-07-07 | 2009-12-23 | 东北大学 | Curve transition method between periodic longitudinal variable-thickness strip Hou Qu and the thin district |
| CN102397875A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Production method of longitudinal variable-thickness steel plate |
| JP5741263B2 (en) * | 2011-07-11 | 2015-07-01 | Ｊｆｅスチール株式会社 | Running thickness change method and apparatus |
-
2017
- 2017-02-08 CN CN201710068866.XA patent/CN108397681A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59189004A (en) * | 1983-04-11 | 1984-10-26 | Nippon Kokan Kk <Nkk> | Manuacture of differential thickness plate and its rolling mill |
| CN101400457A (en) * | 2006-03-15 | 2009-04-01 | 西门子公司 | Rolling method for rolled material for introducing a step in the rolled material |
| CN101607267A (en) * | 2009-07-07 | 2009-12-23 | 东北大学 | Curve transition method between periodic longitudinal variable-thickness strip Hou Qu and the thin district |
| CN102397875A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Production method of longitudinal variable-thickness steel plate |
| JP5741263B2 (en) * | 2011-07-11 | 2015-07-01 | Ｊｆｅスチール株式会社 | Running thickness change method and apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620398A (en) * | 2021-03-10 | 2021-04-09 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
| CN112620398B (en) * | 2021-03-10 | 2021-06-15 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104511482B (en) | A kind of hot-strip convex degree control method | |
| CN108941204B (en) | A kind of double tapered working roll and its roll contour design method | |
| CN102451838B (en) | Method for overcoming camber defect in hot rolling process of steel plate | |
| CN102397875B (en) | Production method of longitudinal variable-thickness steel plate | |
| Liu | Prospects for variable gauge rolling: technology, theory and application | |
| CN103302094B (en) | Production method of transverse wedge-shaped rolled thickness-variable steel plate | |
| CN106077098B (en) | A kind of double tapered working roll and its roll contour design method | |
| WO2015176515A1 (en) | Production technology for screw-thread steel bar with three ribbed sides | |
| CN102303050A (en) | Rough-rolling width self-learning method | |
| CN103817155B (en) | Thickness is greater than 50mm steel plate board-shape control method | |
| CN104772341B (en) | A kind of Optimal Setting method of hot-tandem unit roller | |
| Khramshin et al. | Control methods and systems providing reduced consumption index at rolled product manufacture at plate mill | |
| CN103331304A (en) | Method for rolling steel plate by medium plate mill | |
| CN109226259A (en) | A method of improving hot rolling pipeline steel oxidation iron sheet integrality | |
| CN105251778A (en) | Feedback control method for edge thinning of single-taper working roll shifting rolling mill | |
| CN104148384A (en) | Rolling technology method for ultra-thin ultra-wide steel plate | |
| CN105605404A (en) | Special-shaped-cross-section hot-rolled steel plate coil and manufacturing method thereof | |
| CN109365527B (en) | Rolling method of wide and thick steel plate with large spreading ratio | |
| CN108397681A (en) | Longitudinal special-shaped section steel plate and production method thereof | |
| CN108393350A (en) | Longitudinal special-shaped section steel plate and production method thereof | |
| CN108655182B (en) | A kind of hot-strip production method of overall length thickness consecutive variations | |
| CN102527734B (en) | Steel plate controlling and rolling method | |
| CN109772894A (en) | A kind of strip width control method of hot rolling wedge shape base | |
| CN108397682A (en) | Longitudinal special-shaped section steel plate and production method thereof | |
| CN108393359A (en) | Rolling method of wedge-shaped L P steel plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |
|
| RJ01 | Rejection of invention patent application after publication |