CN107913908A - A kind of high-strength light section steel grating processing technology - Google Patents
A kind of high-strength light section steel grating processing technology Download PDFInfo
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- CN107913908A CN107913908A CN201711116900.2A CN201711116900A CN107913908A CN 107913908 A CN107913908 A CN 107913908A CN 201711116900 A CN201711116900 A CN 201711116900A CN 107913908 A CN107913908 A CN 107913908A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000005098 hot rolling Methods 0.000 claims abstract description 7
- 238000003801 milling Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 238000010008 shearing Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000011017 operating method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- B21B1/24—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 in a continuous or semi-continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0085—Joining ends of material to continuous strip, bar or sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention provides a kind of high-strength light section steel grating processing technology, its operating procedure is：Prepare raw material, by hot rolling raw material using slitting arrowband Dao into method be processed into web-like raw material；Package raw material is subjected to uncoiling, the present invention uses two-part cold bed, ensures the high accuracy of product, and milling train uses rolling bearing, and cantilevered collars, realizes symmetrical pressure up and down, ensure that roll line level is constant.Vertical miller uses upper transmission, and left and right roller symmetrically depresses the stabilization for ensureing rolling centerline.Finisher rolls the anti-skidding side tooth form of various band steels using three roller universals, realizes precision geometry and the control of tolerance dimension of product.To ensure the vertical bar degree of band steel, newly-designed two-part cold bed is employed；First segment bed surface close-up is pushed to realize high temperature thermal straightening, and the equidistantly mobile cooling of the twoth section of bed surface speed change, ensures preferable cooling effect, these process equipments belong to pioneering in band steel production field.
Description
Technical field
The present invention relates to steel grating manufacture field, more particularly to a kind of high-strength light section steel grating processing technology.
Background technology
Pressure welding steel grating is introduced, so far at home as a kind of new product of steel construction piece from last century end by foreign countries
Obtain significant progress.As the Beijing-Tianjin Hebei and Shandong area of northern China steel grating centralized development, according to incompletely statistics, steel is completed
Over one hundred of panel pressure welding production line, total productive capacity is up to million tons.
In the end of last century, pressure welding steel grating mainly uses small-sized flat hot rolled bar, but with the structure of China's steel and iron industry
Adjustment, at present, most of steel grating manufacturing enterprises use more, and the cold shears band steel that strip is cut off through slitting is as pressure welding steel grating
Primary raw material.But cold shears band steel can only solve rectangle plane band steel, strip cools down in rolls at high temperature, and scaling loss overheat softens, and cuts
Afterwards under band steel low bearing capacity；So the steel grating that slitting band steel is manufactured is easily deformed, there is radian in band steel surface after slitting, cuts face
Burr；The defects of out-of-flatness, zinc-plated inequality burr hangs zinc into knurl in hot galvanizing process, make the zinc-plated cost of steel grating it is excessive '
Cause steel grating presentation quality unqualified.So domestic and international market demand it is big be the higher special-shaped section band steel of sexual valence.
For this reason, our research and designs are domestic initiations " it is flat it is vertical without turn round can deformed flat steel tandem rolling line ' use current steel rolling
Multinomial new process in field；New equipment, new technology, with produce steel grating manufacture the replacement new material-high-strength light section it is flat
Steel, to realize that the steel grating product restructuring in China provides condition.
The content of the invention
According to above technical problem, the present invention provides a kind of high-strength light section steel grating processing technology, its specific behaviour
It is as technique：
First, prepare raw material, by hot rolling raw material using slitting arrowband Dao into method be processed into web-like raw material；
2nd, package raw material is subjected to uncoiling, putting it into inductive heater after uncoiling is heated；
3rd, raw material is heated to 800-850 DEG C in traveling, and Continuous mill train is directly entered after heating and carries out continuous rolling；
4th, the finished product shut out is sheared through flying shear, cuts into required size；
5th, the material for shearing completion is put into rollgang, material is sent into thermal straightening two-part cold bed by runout table, cold
Bed acts on it, carries out pushing aligning and is carried out at the same time cooling；
6th, directly material income bundling rack after cooling carries out bundling to last high-ranking officers, and storage is piled up after bundling.
The hot rolling raw thickness is the mill coil raw material of 5-8mm.
The heating stepses use the quick inductance mode of heating of non-oxidation medium temperature.
The Continuous mill train needs 4-6 seconds using flat, vertical, flat three framves without tandem rolling, tandem rolling is turned round, and milling train uses rolling bearing,
Cantilevered collars, realizes that symmetrical pressure, vertical miller up and down use upper transmission, left and right roller is symmetrically depressed, and finisher uses
Three roller universals roll the anti-skidding side tooth form of various band steels.
The milling train uses advanced short stress rolling mill.
The two-part cold bed first segment bed surface close-up is pushed to realize high temperature thermal straightening, and the twoth section of bed surface speed change is equidistantly moved
Dynamic cooling.
With longitudinal shearing slitting, the mill coil that thickness is 5 one 8mm is raw material for the shearing, is through electric induction plus 3-5 seconds
Go out finished product, only tens degree of process cooling, 200-250kwh/ steel of design heating energy consumption, can not stop when a disk raw material rolls
In the case of car, after stove head and the tail butt welding realize so-called ' endless rolling ', almost without scaling loss oxidational losses in the operation of rolling,
Flying shear is equipped with after finisher, can continuous shear stress scale, no cropping, back-end crop, centre roll it is useless wait loss, ensure 100% scale
Steel, by weight lumber recovery are up to more than 98%, by theoretical weight lumber recovery up to 108%.With by traditional more than I000 DEG C
The common process of open rolling compares, and can save energy 25-30% makes the big drop of production cost.
Beneficial effects of the present invention are：The present invention uses two-part cold bed, ensures the high accuracy of product, milling train is using rolling
Bearing, cantilevered collars, realizes symmetrical pressure up and down, ensures that roll line level is constant.Vertical miller uses upper transmission, left and right
Roller symmetrically depresses the stabilization for ensureing rolling centerline.Finisher rolls the anti-skidding side tooth of various band steels using three roller universals
Shape, realizes precision geometry and the control of tolerance dimension of product.To ensure the vertical bar degree of band steel, employ newly-designed
Two-part cold bed；First segment bed surface close-up is pushed to realize high temperature thermal straightening, and the equidistantly mobile cooling of the twoth section of bed surface speed change, ensures
Preferable cooling effect, these process equipments belong to pioneering in band steel production field.Using the controlled rolling of medium temperature two-phase QZ 35 can be made low
The intensity of carbon steel improves more than 50%, its yield limit 65 is brought up to 35OMPa by 235Mpa.This law uses near-net-shape raw material,
The quick inductive heating of non-oxidation medium temperature, minimum rolling pass, is realized energy-saving.
The present invention is with longitudinal shearing slitting in opertions engineering, and the mill coil that thickness is 5 one 8mm is raw material, through electric induction
Add and go out within 3-5 seconds finished product, only tens degree of process cooling, 200-250kwh/ steel of design heating energy consumption, when a disk raw material rolls
It is complete can in the case of not parking, after stove head and the tail butt welding realize so-called ' endless rolling '.Almost without burning in the operation of rolling
Oxidational losses is damaged, flying shear is equipped with after finisher, can continuous shear stress scale.Without cropping, back-end crop, centre is rolled useless wait and is lost, and protects
Demonstrate,prove 100% linear products.Lumber recovery is up to more than 98% by weight, by theoretical weight lumber recovery up to 108%.With by traditional
The common process of more than I000 DEG C open rolling compares, and can save energy 25-30% makes the big drop of production cost.
Brief description of the drawings
Fig. 1 is flowage structure schematic diagram of the present invention.
Such as figure, selection -1, heating -2, carry out continuous rolling -3, flying shear -4, conveying roller -5, cooling -6, bundling -7.
Embodiment
According to Fig. 1, the present invention is further described：
Embodiment 1
First had to during processing prepare raw material, by hot rolling raw material using slitting arrowband Dao into method be processed into web-like original
Material；Package raw material is subjected to uncoiling, putting it into inductive heater after uncoiling is heated；Raw material is heated in traveling
800-850 DEG C, Continuous mill train is directly entered after heating and carries out continuous rolling；The finished product shut out is sheared through flying shear, is cut into
Required size, with longitudinal shearing slitting, the mill coil that thickness is 5 one 8mm is raw material, is through electric induction plus 3-5 seconds
Finished product, only tens degree of process cooling, design heating energy consumption 200-250kwh/ pause steel, when a disk raw material rolls can be not parking
In the case of, after stove head and the tail butt welding realize so-called ' endless rolling '.Almost without scaling loss oxidational losses in the operation of rolling,
Flying shear is equipped with after finisher, can continuous shear stress scale.Without cropping, back-end crop, centre is rolled useless wait and is lost, and ensures 100% scale steel
Material.Lumber recovery is up to more than 98% by weight, by theoretical weight lumber recovery up to 108%.With being opened by traditional more than I000 DEG C
The common process rolled compares, and can save energy 25-30% makes the big drop of production cost.The material for shearing completion is put into rollgang, it is defeated
Go out roller-way and material is sent into thermal straightening two-part cold bed, cold bed acts on it, carries out pushing aligning and is carried out at the same time cooling；
Directly material income bundling rack after cooling carries out bundling to last high-ranking officers, and storage is piled up after bundling.Hot rolling raw material is thick
Spend the mill coil raw material for 5-8mm.Heating stepses use the quick inductance mode of heating of non-oxidation medium temperature.Continuous mill train uses
Flat, vertical, flat three framves need 4-6 seconds without tandem rolling, tandem rolling is turned round, and milling train uses rolling bearing, and cantilevered collars, is realized above and below symmetrical
Pressure, vertical miller use upper transmission, and left and right roller is symmetrically depressed, and finisher rolls the anti-of various band steels using three roller universals
Sliding side tooth form.Milling train uses advanced short stress rolling mill.Two-part cold bed first segment bed surface close-up is pushed to realize that high warm is rectified
Directly, the twoth section of bed surface speed change equidistantly mobile cooling.
Embodiment 2
IX type section flat-steels enable its geometric mechanics row be improved due to the optimization of cross sectional shape.
The physical dimension of the two and mechanical property are with reference to the table of comparisons by taking nominal dimension 32X5 band steels as an example：
Both planar rectangular steel and IX type section flat-steels mechanical property are with reference to contrast table
The steel grating made of IX types band steel, under the identical basis of bearing capacity, its weight reduction 20% or so.
Embodiment 3
GU types in steel grating professional standard YB/4001.1-2007, GM types, its span furrow width of GM type standards trench cover are small
In 70Omm, manufactured if the planar rectangular band steel that regulation in standard uses is used instead high-strength light section type band steel, its every piece
Cover board weighs about mitigation 30-40% certainly, and the present makes (vehicle all-up weight with GT type lateral sulcus, cross-section ditch steel grating operculum colpi T-25
25 tons) exemplified by data such as table.
Y-25 grades of the comparison of two kinds of different band steel steel grating operculum colpi weight
The larger component of span is made using high-strength light band steel steel grating, makes its structure that there is larger safety storage
It is standby, ensure that unexpected overload capacity greatly improves.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, without departing from the principle of the present invention, some improvement can also be made, these improvement also should be regarded as this hair
Bright protection domain.
Claims (6)
1. a kind of high-strength light section steel grating processing technology, its concrete operations technique are：
First, prepare raw material, by hot rolling raw material using slitting arrowband Dao into method be processed into web-like raw material；
2nd, package raw material is subjected to uncoiling, putting it into inductive heater after uncoiling is heated；
3rd, raw material is heated to 800-850 DEG C in traveling, and Continuous mill train is directly entered after heating and carries out continuous rolling；
4th, the finished product shut out is sheared through flying shear, cuts into required size；
5th, the material for shearing completion is put into rollgang, material is sent into thermal straightening two-part cold bed, cold bed pair by runout table
It is acted on, and is carried out pushing aligning and is carried out at the same time cooling；
6th, directly material income bundling rack after cooling carries out bundling to last high-ranking officers, and storage is piled up after bundling.
A kind of 2. high-strength light section steel grating processing technology described in accordance with the claim 1, it is characterised in that the hot rolling
Raw thickness is the mill coil raw material of 5-8mm.
A kind of 3. high-strength light section steel grating processing technology described in accordance with the claim 1, it is characterised in that the heating
Step uses the quick inductance mode of heating of non-oxidation medium temperature.
A kind of 4. high-strength light section steel grating processing technology described in accordance with the claim 1, it is characterised in that the tandem rolling
Unit needs 4-6 seconds using flat, vertical, flat three framves without tandem rolling, tandem rolling is turned round, and milling train uses rolling bearing, cantilevered collars, realization pair
Title formula is depressed up and down, and vertical miller uses upper transmission, and left and right roller is symmetrically depressed, and finisher is rolled various using three roller universals
The anti-skidding side tooth form of band steel.
5. a kind of high-strength light section steel grating processing technology described in accordance with the claim 1, it is characterised in that described two sections
Formula cold bed first segment bed surface close-up is pushed to realize high temperature thermal straightening, the equidistantly mobile cooling of the twoth section of bed surface speed change.
A kind of 6. high-strength light section steel grating processing technology described in accordance with the claim 1, it is characterised in that the shearing
With longitudinal shearing slitting, the mill coil that thickness is 5 one 8mm is raw material, is finished product through electric induction plus 3-5 seconds, process cooling
Only tens degree, energy consumption 200-250kwh/ steel of design heating, when a disk raw material rolls can be in the case of not parking, in stove
So-called ' endless rolling ' is realized in head and the tail butt welding afterwards, almost without scaling loss oxidational losses in the operation of rolling, is set after finisher
Have flying shear, can continuous shear stress scale, no cropping, back-end crop, centre roll it is useless wait loss, ensure 100% linear products, become a useful person by weight
Rate is up to more than 98%, by theoretical weight lumber recovery up to 108%.With the common process ratio by more than I000 DEG C traditional open rolling
Compared with can save energy 25-30% makes the big drop of production cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116900.2A CN107913908A (en) | 2017-11-13 | 2017-11-13 | A kind of high-strength light section steel grating processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116900.2A CN107913908A (en) | 2017-11-13 | 2017-11-13 | A kind of high-strength light section steel grating processing technology |
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| CN107913908A true CN107913908A (en) | 2018-04-17 |
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| CN201711116900.2A Pending CN107913908A (en) | 2017-11-13 | 2017-11-13 | A kind of high-strength light section steel grating processing technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3534575A (en) * | 1966-07-11 | 1970-10-20 | Kocks Gmbh Friedrich | Apparatus for straightening hot-rolled tubes |
| CN202270737U (en) * | 2011-10-11 | 2012-06-13 | 江阴市西城钢铁有限公司 | Split type cooling table strengthening plate |
| CN203003488U (en) * | 2012-10-12 | 2013-06-19 | 浙江海通钢业有限公司 | Elevator guide rail steel precise tandem-rolling processing line |
| CN104148381A (en) * | 2014-07-07 | 2014-11-19 | 常州东方特钢有限公司 | Symmetric rolling technology for T-shaped elevator guide rail steel |
| CN204052390U (en) * | 2014-08-27 | 2014-12-31 | 鞍钢集团工程技术有限公司 | There is the hinge cage disk cold bed for steel tubes of straightening function |
| CN105689389A (en) * | 2016-03-08 | 2016-06-22 | 新兴河北冶金资源有限公司 | Rolling process for hot-rolled tooth-shaped flat steel |
-
2017
- 2017-11-13 CN CN201711116900.2A patent/CN107913908A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3534575A (en) * | 1966-07-11 | 1970-10-20 | Kocks Gmbh Friedrich | Apparatus for straightening hot-rolled tubes |
| CN202270737U (en) * | 2011-10-11 | 2012-06-13 | 江阴市西城钢铁有限公司 | Split type cooling table strengthening plate |
| CN203003488U (en) * | 2012-10-12 | 2013-06-19 | 浙江海通钢业有限公司 | Elevator guide rail steel precise tandem-rolling processing line |
| CN104148381A (en) * | 2014-07-07 | 2014-11-19 | 常州东方特钢有限公司 | Symmetric rolling technology for T-shaped elevator guide rail steel |
| CN204052390U (en) * | 2014-08-27 | 2014-12-31 | 鞍钢集团工程技术有限公司 | There is the hinge cage disk cold bed for steel tubes of straightening function |
| CN105689389A (en) * | 2016-03-08 | 2016-06-22 | 新兴河北冶金资源有限公司 | Rolling process for hot-rolled tooth-shaped flat steel |
Non-Patent Citations (1)
| Title |
|---|
| 程知松, 冶金工业出版社 * |
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