CN102284492A - Hot rolling H-beam steel finishing roll opening and hot pressing H-beam steel processing technology - Google Patents
Hot rolling H-beam steel finishing roll opening and hot pressing H-beam steel processing technology Download PDFInfo
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- CN102284492A CN102284492A CN2011102326952A CN201110232695A CN102284492A CN 102284492 A CN102284492 A CN 102284492A CN 2011102326952 A CN2011102326952 A CN 2011102326952A CN 201110232695 A CN201110232695 A CN 201110232695A CN 102284492 A CN102284492 A CN 102284492A
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Abstract
The invention discloses a hot rolling non-flat web H-beam steel finishing roll opening and a processing technology. The H-beam steel comprises a flange plate and a non-flat web, and the finishing roll opening consists of an upper forming roll and a lower forming roll which mutually correspond. The finishing roll opening is characterized by forming an upper and a lower curve segments which correspond mutually and can be one segment in plane curves such as arc lines, hyperbolic curves, parabola, ellipses and the like. The invention has the beneficial effects that the non-flat web H-beam steel finishing roll opening and the hot rolling processing technology thereof are provided; the hot rolling H-beam steel processed by adopting the hot rolling processing technology has high precision, strong buckling deformation resisting capacity of the flange plate and the web and enhanced structural performance, overcomes the defect of low processing efficiency in the process of processing welding type H-beam steel made of the same materials, and is especially suitable for a batch production process; and the production cost is lowered, and the production efficiency is increased.
Description
Technical field
The present invention relates to the architectural shape technical field, especially relate to the non-flat web H shaped steel of a kind of hot rolling finishing roll shape of the mouth as one speaks and hot rolled H-shaped processing technology.
Background technology
H shaped steel is widely used in multiple field, H shaped steel is formed by two blocks of flange plates that are parallel to each other with perpendicular to the web of flange plate, difference according to processing technology, two kinds of hot rolled H-shaped and welded H section steel are arranged, common hot rolled H-shaped web is flat web, this kind H shaped steel processing technology is simple, but in use has intensity difference, flexural deformation is big, bearing capacity is low shortcoming.Though the framework pattern of wave web has appearred in solder type H shaped steel, welding processing H shaped steel efficient is low, can't adapt to needs large-scale, integrated production.
Summary of the invention
The object of the present invention is to provide a kind of rolling of hot-rolled H-shaped steel to spin in type and processing technology thereof, adopt the web shape of cross section of the H shaped steel that this processes comes out that variation has taken place, thereby can carry bigger load, the technical scheme that adopts is: a kind of hot rolled H-shaped finishing roll shape of the mouth as one speaks, this H shaped steel comprises flange plate and web, the described finishing roll shape of the mouth as one speaks is made of corresponding mutually up and down format roll, it is characterized in that: the described web finishing roll shape of the mouth as one speaks partly comprises corresponding mutually up and down curved segments, and described curved segments can be circular arc line, hyperbola, parabola, a kind of in the ellipse.
Technical scheme of the present invention also has: the described web finishing roll shape of the mouth as one speaks partly comprises among corresponding mutually up and down " П " line segment, " v " line segment or " ︹ " line segment a kind of.
Technical scheme of the present invention also has: described hot rolled H-shaped processing technology may further comprise the steps:
1) continuous casting billet is through weighing, survey long back by the feeder heating furnace heating of packing into;
2) continuous casting billet is come out of the stove after being heated to set point of temperature, and is back and forth rolling through being sent to the big mill cogging after the high pressure dephosphorization;
3) bandaging piece after the cogging is sent to the universal rolling mill group, and described universal rolling mill group comprises universal roughing mill, edging mill and omnipotent finishing mill, and the finishing roll shape of the mouth as one speaks comprises claim 1 or 2 described curve or line segments on the described omnipotent finishing mill;
4) bandaging piece is sent to hot saw and carries out segmentation, sampling, back-end crop;
5) bandaging piece after the segmentation is sent to cold bed and is cooled to the technological requirement temperature;
6) bandaging piece under behind the cold bed is delivered to the straightener aligning;
7) bandaging piece behind the aligning is sent to cold saw and carries out obtaining H shaped steel after the scale sawing.
Technical scheme of the present invention also has: the length of continuous casting billet described in the step 1) is between 7.6m-13.6m.
Technical scheme of the present invention also has:: heating furnace adopts pressure-fired to burn steel in the step 1), and furnace pressure is controlled between the 0-25Pa, and the heating furnace cooling water inlet temperature is not more than 35 ℃, and return water temperature is not more than 45 ℃.
Technical scheme of the present invention also has:: the reciprocal rolling temperature of cogging step 2) is not less than 1180 ℃.
Technical scheme of the present invention also has: step 2) described high pressure dephosphorization be meant the continuous casting billet surface iron scale through the dephosphorize by high pressure water cleaning, described high pressure is meant that the dephosphorization water conservancy project makes pressure at 15-20.5MPa.
Technical scheme of the present invention also has: the bandaging piece temperature of opening bundle in the universal rolling mill group in the step 3) is not less than 950 ℃.
Technical scheme of the present invention also has: the bandaging piece temperature of pricking eventually in the universal rolling mill group in the step 3) is not less than 750 ℃.
Technical scheme of the present invention also has: back-end crop length is 1-1500mm in the step 4).
Beneficial effect of the present invention is: the finishing roll shape of the mouth as one speaks and hot rolling processing technology thereof that a kind of non-flat web H shaped steel is provided, the hot rolled H-shaped precision height that adopts this mode to process, the anti-bending deformation ability of flange plate and web is strong, structural behaviour is improved, overcome the low shortcoming of working (machining) efficiency that exists in the solder type H shaped steel of the same race process, especially be fit to the mass production process, reduced production cost, improved production efficiency.
Description of drawings
Accompanying drawing 1 is the wave web H shaped steel cross-sectional view that adopts this processes to make, and accompanying drawing 2 is rectangle web H shaped steel cross-sectional views, and accompanying drawing 3 is triangular web H shaped steel cross-sectional views, and accompanying drawing 4 is trapezoidal web H shaped steel cross-sectional views.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.In order to finish this hot rolled H-shaped production process, on the finishing roll of mm finishing mill unit, adopted a kind of new roller shape of the mouth as one speaks, this finishing roll shape of the mouth as one speaks is made of corresponding mutually up and down format roll, the shape of the mouth as one speaks partly comprises corresponding mutually up and down curved segments, this kind curved segments can be a circular arc line, hyperbola, parabola, a kind of line segment in the ellipse, also can select " П " line segment, a kind of among " v " line segment or " ︹ " line segment, adopt different curve or line segment, can obtain different hot rolled H-shaped of shape of cross section, when adopting curve to constitute the finishing roll shape of the mouth as one speaks, process wave web H shaped steel, when adopting " П " line segment to constitute the finishing roll shape of the mouth as one speaks, process rectangle web H shaped steel, when adopting " v " line segment to constitute finishing roll H shaped steel, process triangular web H shaped steel, adopt ︹ " when line segment constitutes finishing roll H shaped steel, process trapezoidal web H shaped steel.
Be used to produce hot rolled H-shaped processing technology, this hot rolled H-shaped processing technology may further comprise the steps:
1) continuous casting billet is through weighing, survey long back by the feeder heating furnace heating of packing into, continuous casting billet length is between 7.6m-13.6m, and heating furnace adopts pressure-fired to burn steel, and furnace pressure is controlled between the 0-25Pa, the heating furnace cooling water inlet temperature is not more than 35 ℃, and return water temperature is not more than 45 ℃;
2) continuous casting billet is come out of the stove after being heated to set point of temperature, back and forth rolling through being sent to the big mill cogging after the high pressure dephosphorization, the reciprocal rolling temperature of cogging is not less than 1180 ℃, the iron scale that the high pressure dephosphorization is meant the continuous casting billet surface is through the dephosphorize by high pressure water cleaning, and described high pressure is meant that the dephosphorization water conservancy project makes pressure at 15-20.5MPa;
3) bandaging piece after the cogging is sent to the universal rolling mill group, described universal rolling mill group comprises universal roughing mill, edging mill and omnipotent finishing mill, the finishing roll shape of the mouth as one speaks comprises claim 1 or 2 described curve or line segments on the described omnipotent finishing mill, the bandaging piece temperature of opening bundle in the universal rolling mill group is not less than 950 ℃, and the bandaging piece temperature of pricking is not less than 750 ℃ eventually;
4) bandaging piece is sent to hot saw and carries out segmentation, sampling, back-end crop, and back-end crop length is 1-1500mm;
5) bandaging piece after the segmentation is sent to cold bed and is cooled to the technological requirement temperature;
6) bandaging piece under behind the cold bed is delivered to the straightener aligning;
7) bandaging piece behind the aligning is sent to cold saw and carries out obtaining H shaped steel after the scale sawing.
Certainly, above-mentioned explanation is not a limitation of the present invention, and the present invention also is not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also belong to protection scope of the present invention.
Claims (10)
1. hot rolled H-shaped finishing roll shape of the mouth as one speaks, this H shaped steel comprises flange plate and web, the described finishing roll shape of the mouth as one speaks is made of corresponding mutually up and down format roll, it is characterized in that: the described web finishing roll shape of the mouth as one speaks partly comprises up and down corresponding mutually curved segments, and what described curved segments can be in circular arc line, hyperbola, parabola, the ellipse is a kind of.
2. hot rolled H-shaped finishing roll shape of the mouth as one speaks, this H shaped steel comprises flange plate and web, the described finishing roll shape of the mouth as one speaks is made of mutually corresponding up and down format roll, it is characterized in that: the described web finishing roll shape of the mouth as one speaks partly comprises among corresponding mutually up and down " П " line segment, " v " line segment or " ︹ " line segment a kind of.
3. hot rolled H-shaped processing technology, it is characterized in that: described hot rolled H-shaped processing technology may further comprise the steps:
1) continuous casting billet is through weighing, survey long back by the feeder heating furnace heating of packing into;
2) continuous casting billet is come out of the stove after being heated to set point of temperature, and is back and forth rolling through being sent to the big mill cogging after the high pressure dephosphorization;
3) bandaging piece after the cogging is sent to the universal rolling mill group, and described universal rolling mill group comprises universal roughing mill, edging mill and omnipotent finishing mill, and the finishing roll shape of the mouth as one speaks comprises claim 1 or 2 described curve or line segments on the described omnipotent finishing mill;
4) bandaging piece is sent to hot saw and carries out segmentation, sampling, back-end crop;
5) bandaging piece after the segmentation is sent to cold bed and is cooled to the technological requirement temperature;
6) bandaging piece under behind the cold bed is delivered to the straightener aligning;
7) bandaging piece behind the aligning is sent to cold saw and carries out obtaining H shaped steel after the scale sawing.
4. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: the length of continuous casting billet described in the step 1) is between 7.6m-13.6m.
5. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: heating furnace adopts pressure-fired to burn steel in the step 1), and furnace pressure is controlled between the 0-25Pa, and the heating furnace cooling water inlet temperature is not more than 35 ℃, and return water temperature is not more than 45 ℃.
6. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: step 2) described in the reciprocal rolling temperature of cogging be not less than 1180 ℃.
7. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: step 2) described high pressure dephosphorization be meant the continuous casting billet surface iron scale through the dephosphorize by high pressure water cleaning, described high pressure is meant that the dephosphorization water conservancy project makes pressure at 15-20.5MPa.
8. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: the bandaging piece temperature of opening bundle in the universal rolling mill group in the step 3) is not less than 950 ℃.
9. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: the bandaging piece temperature of pricking eventually in the universal rolling mill group in the step 3) is not less than 750 ℃.
10. according to the described hot rolled H-shaped processing technology of claim 3, it is characterized in that: back-end crop length is 1-1500mm in the step 4).
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| CN2011102326952A CN102284492A (en) | 2011-08-15 | 2011-08-15 | Hot rolling H-beam steel finishing roll opening and hot pressing H-beam steel processing technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974609A (en) * | 2012-12-06 | 2013-03-20 | 莱芜钢铁集团有限公司 | H-shaped steel hot rolling production method |
| CN103862227A (en) * | 2012-12-10 | 2014-06-18 | 烟台新科钢结构有限公司 | Process method for producing corrugated web plate H-steel |
| CN105945068A (en) * | 2016-06-06 | 2016-09-21 | 山东钢铁股份有限公司 | Edging roll with nested hole groove structure and rolling method of H-shaped steel |
| CN109290369A (en) * | 2018-09-27 | 2019-02-01 | 天津市中重科技工程有限公司 | A kind of large-scale and ultra-large H-beam rolling mill practice |
| CN111893424A (en) * | 2020-06-29 | 2020-11-06 | 武汉钢铁有限公司 | Plate blank surface iron scale heating control method based on hot-conveying and hot-charging process |
| CN112246863A (en) * | 2020-08-25 | 2021-01-22 | 山东润金重工科技有限公司 | H-shaped steel processing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974609A (en) * | 2012-12-06 | 2013-03-20 | 莱芜钢铁集团有限公司 | H-shaped steel hot rolling production method |
| CN102974609B (en) * | 2012-12-06 | 2014-11-12 | 莱芜钢铁集团有限公司 | H-shaped steel hot rolling production method |
| CN103862227A (en) * | 2012-12-10 | 2014-06-18 | 烟台新科钢结构有限公司 | Process method for producing corrugated web plate H-steel |
| CN105945068A (en) * | 2016-06-06 | 2016-09-21 | 山东钢铁股份有限公司 | Edging roll with nested hole groove structure and rolling method of H-shaped steel |
| CN105945068B (en) * | 2016-06-06 | 2019-03-19 | 山东钢铁股份有限公司 | The milling method of edger roll and H profile steel with nested hole slot structure |
| CN109290369A (en) * | 2018-09-27 | 2019-02-01 | 天津市中重科技工程有限公司 | A kind of large-scale and ultra-large H-beam rolling mill practice |
| CN111893424A (en) * | 2020-06-29 | 2020-11-06 | 武汉钢铁有限公司 | Plate blank surface iron scale heating control method based on hot-conveying and hot-charging process |
| CN111893424B (en) * | 2020-06-29 | 2022-07-01 | 武汉钢铁有限公司 | Plate blank surface iron scale heating control method based on hot-conveying and hot-charging process |
| CN112246863A (en) * | 2020-08-25 | 2021-01-22 | 山东润金重工科技有限公司 | H-shaped steel processing method and device |
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Application publication date: 20111221 |