CN114888077B - Composite production process for efficiently producing heavy H-shaped steel and steel sheet piles - Google Patents
Composite production process for efficiently producing heavy H-shaped steel and steel sheet piles Download PDFInfo
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- CN114888077B CN114888077B CN202210472245.9A CN202210472245A CN114888077B CN 114888077 B CN114888077 B CN 114888077B CN 202210472245 A CN202210472245 A CN 202210472245A CN 114888077 B CN114888077 B CN 114888077B
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- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
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- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/095—U-or channel sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention provides a composite production process for efficiently producing heavy H-shaped steel and steel sheet piles, which comprises three groups of rolling mills including a cogging mill area, a tandem rolling mill area and a finishing mill area. Two cogging mills are arranged in the cogging mill area and are arranged independently; three universal/two-roll interchangeable rolling mills are arranged in the tandem rolling mill area; four two-high mills are arranged in the finishing mill area. The invention solves the specification limitation of the existing heavy H-shaped steel production line for producing steel sheet piles, particularly large and ultra-large steel sheet piles, can effectively improve the rolling efficiency of H-shaped steel and steel sheet piles, reduces the cost of the steel sheet piles and enhances the market competitiveness.
Description
Technical Field
The invention relates to the field of steel rolling, in particular to a high-efficiency composite production process of heavy H-shaped steel and large-specification and ultra-large-specification steel sheet piles.
Background
Heavy H-section steel is a generic term for H-section steel with large size and heavy weight per unit length, and is only listed in the appendix at present. The steel sheet pile products are only listed as U-shaped, straight-shaped and small-sized Z-shaped at present in national standards, while the steel sheet piles are widely applied to Z-shaped and hat-shaped steel sheet piles in Europeanism and the like with better application conditions, and the requirements of the products on the diameter of a roller and the length of the roller body of the roller are larger.
The domestic heavy H-shaped steel production line is not built at the initial stage, the rapid increase of the capacity requirement of heavy H-shaped steel is not fully predicted, and the design capacity requirement is not high, so that the tandem rolling mill still adopts the conventional three-frame arrangement of omnipotent-edging-omnipotent according to the conventional H-shaped steel rolling mill arrangement mode. Because the section of the heavy H-shaped steel rolled piece is large and the strength grade of the product is high, the load of the universal rolling mill is large, so that the required universal passes are more than those of the large H-shaped steel, and the reciprocating rolling is required for 5-9 times, the productivity of the tandem rolling mill is greatly reduced, the tandem rolling mill becomes the production bottleneck of a rolling line, and the productivity of the rolling line is restricted. The rolling mill specification, the transmission motor, the gear seat and the like of the edging machine are much smaller than those of a universal rolling mill, and the universal rolling mill is basically not possibly transformed, so that the universal edging process cannot be adopted to improve the productivity of a tandem rolling mill area.
In the initial stage of construction of domestic heavy H-shaped steel production line, production of large-size steel sheet piles is basically not considered, so that the length of the two rolling roller bodies of the universal/two-roller exchange rolling mill is small, all holes required for producing large-size steel sheet piles cannot be arranged, the producible specification can be determined only according to the width of the roller surface and the hole type size, and part of large-size steel sheet pile products can be abandoned only.
The production line of steel sheet piles, the international current practice, the production of small-size products and large-medium H-shaped steel by combining lines, the large-size steel sheet piles are mostly produced by adopting a single-frame production mode, the productivity is low, the temperature of rolled pieces is reduced greatly, the product yield is low, and the production cost is high. This is also the most important reason why the price of large steel sheet piles such as Z-shaped steel sheet piles is high internationally.
With the development of the domestic steel industry and the driving of the use demands of the steel sheet piles, the domestic large-scale steel sheet pile production process realizes technical breakthrough, and the semi-continuous rolling production process is adopted, so that the rolling line productivity is greatly improved, the rolling blank weight is improved, the yield is improved, and the production cost is greatly reduced. However, the number of universal rolling mills is increased on semi-tandem rolling to realize extremely uneconomical due to too many universal passes of heavy and large H-shaped steel. Therefore, the semi-tandem rolling line of the steel sheet pile is basically not capable of effectively producing heavy and large H-shaped steel products.
Considering heavy H-shaped steel rolling mill and large steel sheet pile rolling mill, there are many common demands on rolling mill, all require super large diameter, super high strength, super large rolling force, therefore, it is necessary to combine two production lines to form a composite production process of heavy H-shaped steel and large steel sheet pile.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a composite production process for efficiently producing heavy H-shaped steel and steel sheet piles.
In order to achieve the aim, the composite production process for efficiently producing the heavy H-shaped steel and the steel sheet pile comprises three groups of rolling mills of a cogging mill area, a tandem rolling mill area and a finishing mill area; two cogging mills are arranged in the cogging mill area and are arranged independently; 3 universal/two-roll interchangeable rolling mills are arranged in the tandem rolling mill area; the finishing mill area is provided with 4 two-roll mills; wherein,
When heavy H-shaped steel is rolled, all three rolling mills in the tandem rolling mill area adopt a universal mode, a reciprocating rolling mode and a finishing mill group are not used; or when heavy H-shaped steel is rolled, three rolling mills in the tandem rolling mill zone adopt two universal modes and one edging mill, the reciprocating rolling mode is adopted, and a finishing mill group is not used;
When rolling the steel sheet pile, the three rolling mills in the tandem rolling mill zone all adopt a two-roll mode, and form a seven-frame continuous rolling unit with four finishing mills, and the steel sheet pile finished product is formed by one-time rolling.
Further, according to the rolling sequence, the rolling mill is in the sequence of a cogging mill I, a cogging mill II, a tandem rolling mill I, a tandem rolling mill II, a tandem rolling mill III, a finishing mill I, a finishing mill II, a finishing mill III and a finishing mill IV.
Further, the rolling process for rolling heavy H-shaped steel specifically comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; all three frames of the tandem rolling mill adopt universal rolling mills and are rolled in tandem in a reciprocating manner; the two-roller finishing mill group is not used;
Rolling the rolled piece for 5-7 times by a first cogging mill;
Conveying the steel wire to a second cogging mill from a roller way, and rolling the steel wire in the second cogging mill for 3 times; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill is three rolling mills, all the rolling mills are universal rolling mills, and the racks are arranged to be universal-universal edging-universal; the rolled piece is rolled in the tandem rolling mill set for 3-7 times to form heavy H-shaped steel finished products, and the heavy H-shaped steel finished products are sent to a cooling bed for cooling.
Further, the rolling process for rolling heavy H-shaped steel specifically comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; the tandem rolling mill adopts two universal rolling mills and a two-roller edging mill, and is in tandem arrangement for reciprocating rolling; the two-roller finishing mill group is not used; rolling the rolled piece for 5-7 times by a first cogging mill, and conveying the rolled piece to a second cogging mill by a roller way;
Rolling 3 times in a second cogging mill; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill adopts 2 universal and 1 two-roll edging mill, the frame is arranged as universal-edging-universal, the rolled piece is rolled in the tandem rolling mill set for 5-9 times in a reciprocating way, and the rolled piece is rolled into a heavy H-shaped steel finished product, and the heavy H-shaped steel finished product is sent to a cooling bed for cooling.
Further, the rolling process for rolling the steel sheet pile specifically comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; three frames of the tandem rolling mill are all in a two-roller mode, and form a seven-frame continuous finishing mill group together with four two-roller finishing mills, so that a steel sheet pile finished product is rolled at one time;
Rolling the rolled piece for 5-7 times by a first cogging mill, and conveying the rolled piece to a second cogging mill by a roller way;
Rolling 3 times in a second cogging mill; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill is a three-frame rolling mill, and all the tandem rolling mills adopt two-roll rolling mills; and the seven-frame continuous rolling unit is formed together with the four-frame two-roller mill of the finishing mill unit; the rolled piece passes once and is rolled into a steel sheet pile finished product, and the steel sheet pile finished product is sent to a cooling bed for cooling.
When the H-shaped steel is rolled, a brand new hole type design concept of omnipotent-omnipotent edging-omnipotent can be adopted, so that the rolling mill efficiency of a tandem rolling mill area is greatly improved, and the problem of web eccentricity of H-shaped steel finished products is effectively solved; and the universal-edging-universal hole type can also be adopted, so that the production is more mature and reliable.
The invention solves a plurality of problems existing in the existing heavy H-shaped steel production line and large steel sheet pile production line at home and abroad, provides a composite production process for efficiently producing heavy H-shaped steel and steel sheet piles, solves the bottleneck problem of a tandem rolling mill of the heavy H-shaped steel production line, solves the specification limitation problem of producing large steel sheet piles on the existing heavy H-shaped steel production line, solves the low productivity problem of producing steel sheet piles on the existing heavy H-shaped steel production line, and solves the problem of universal pass shortage of producing heavy H-shaped steel on the existing large steel sheet pile production line. The invention can fully exert the productivity of the tandem mill to produce the H-shaped steel, can also efficiently produce the large-specification steel sheet pile, effectively reduce the cost of the heavy H-shaped steel and the large-specification steel sheet pile, and enhance the market competitiveness of enterprises.
Drawings
Fig. 1 is a process layout diagram of a composite production process for efficiently producing heavy H-type steel and steel sheet piles according to an embodiment of the present invention:
FIG. 2 shows a rolling mode when heavy H-shaped steel is rolled, wherein a tandem rolling mill adopts three universal rolling mills, tandem arrangement is used for reciprocating rolling, and a two-roll finishing mill group is not used;
FIG. 3 shows a second rolling mode for rolling heavy H-section steel, wherein a tandem rolling mill adopts two universal rolling mills and one two-roller edging mill, and the tandem arrangement is used for reciprocating rolling, and a two-roller finishing mill group is not used; .
Fig. 4 shows a rolling method for rolling a steel sheet pile, wherein a tandem rolling mill adopts a two-roll mode, and a seven-stand continuous finishing mill group is formed by the tandem rolling mill and four two-roll finishing mills, so that a steel sheet pile finished product is formed by one-time rolling.
Reference numerals illustrate:
I-blooming mill section: 1-cogging mill I; 2-a second cogging mill; II-tandem Rolling section: 3-a universal rolling mill I; 4-a second universal rolling mill; 5-a universal rolling mill III; III-finishing section: 6-a first two-roller finishing mill; 7-a second finishing mill; 8-a second finishing mill III; and 9-a two-roller finishing mill IV.
Detailed Description
The present invention is further described below with reference to the accompanying drawings, in order to further understand and implement the present invention, as will be appreciated by those skilled in the art. However, the exemplary embodiments of the present invention and the descriptions thereof are for explaining the present invention and are not meant to be unduly limiting.
As shown in fig. 1, the composite production process for efficiently producing heavy H-shaped steel and steel sheet piles comprises three groups of rolling mills of a cogging mill area, a tandem rolling mill area and a finishing mill area. Two cogging mills are arranged in the cogging mill area and are arranged independently; three universal/two-roll exchange rolling mills are arranged in the tandem rolling mill area; four two-high mills are arranged in the finishing mill area.
As shown in FIG. 2, in order to roll heavy H-steel, a tandem rolling mill adopts three universal rolling mills, and is used for tandem arrangement and reciprocating rolling, and a two-roll finishing mill group is not used. Rolling the rolled piece for 5-7 times by a first cogging mill, conveying the rolled piece to a second cogging mill by a roller way, and rolling the rolled piece for 3 times by the second cogging mill; and then the transverse moving rack moves to a roller way in front of the tandem machine. The tandem rolling mill is three rolling mills, all the rolling mills are universal rolling mills, the stand is arranged to be universal-universal edging-universal, 3 universal passes can be provided for each rolling piece, and the rolling efficiency is greatly improved. The rolled piece is rolled in the tandem rolling mill set for 3-7 times to form heavy H-shaped steel finished products, and the heavy H-shaped steel finished products are sent to a cooling bed for cooling. Because the section of the heavy H-shaped steel rolled piece is large and the material strength is high, the load of the universal rolling mill is large, so that the number of universal passes is more than that of the large H-shaped steel, if the traditional production mode shown in figure 3 is adopted, the reciprocating rolling is required to be carried out for 5-9 times, the productivity of the tandem rolling mill is greatly reduced, the tandem rolling mill becomes the production bottleneck of a rolling line, and the productivity of the rolling line is restricted. By adopting the universal edging process, the rolling times of a tandem rolling mill can be reduced, the productivity of the tandem rolling mill is greatly improved, the production cost of heavy H-shaped steel is reduced, and the market competitiveness of enterprises is improved.
As shown in FIG. 3, in the second rolling mode for rolling heavy H-steel, the tandem rolling mill adopts two universal rolling mills and one two-roller edging mill, and the tandem arrangement is used for reciprocating rolling, and the two-roller finishing mill group is not used. Rolling the rolled piece for 5-7 times by a first cogging mill, conveying the rolled piece to a second cogging mill by a roller way, and rolling the rolled piece for 3 times by the second cogging mill; and then the transverse moving rack moves to a roller way in front of the tandem machine. The tandem rolling mill is a three-frame rolling mill, 2 universal and 1 two-roll edging mill is adopted, the frame is arranged to be universal-edging-universal, and each time a rolled piece passes, 2 universal passes can be realized. The rolled piece is rolled in the tandem rolling mill set for 5-9 times to form heavy H-shaped steel finished products, and the heavy H-shaped steel finished products are sent to a cooling bed for cooling.
As shown in fig. 4, in order to roll the steel sheet pile, the tandem rolling mill adopts a two-roll mode, and forms a seven-stand continuous finishing mill group with four two-roll finishing mills, and the steel sheet pile finished product is rolled at one time. Rolling the rolled piece for 5-7 times by a first cogging mill, conveying the rolled piece to a second cogging mill by a roller way, and rolling the rolled piece for 3 times by the second cogging mill; and then the transverse moving rack moves to a roller way in front of the tandem machine. The tandem rolling mill is a three-frame rolling mill, and all the tandem rolling mills adopt two-roll rolling mills; and the steel sheet pile is rolled into a steel sheet pile finished product by one pass through a seven-frame continuous rolling unit formed by the four-frame two-roller rolling mill of the finishing mill unit, and is sent to a cooling bed for cooling. The steel sheet pile adopts a semi-continuous rolling production mode, so that the rolling mill efficiency of the rolling mill is improved, and the productivity of the rolling mill is fully exerted; and because the reciprocating rolling is not needed, the rolling time is short, the temperature of the rolled piece is reduced, and the heating temperature of the steel billet can be reduced, thereby realizing high-efficiency and low-energy-consumption production, reducing the production cost and improving the market competitiveness of enterprises.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention.
Claims (4)
1. A composite production process for efficiently producing heavy H-shaped steel and large steel sheet piles is characterized by comprising the following steps of: three sets of rolling mills including a blooming mill section, a tandem mill section and a finishing mill section; two cogging mills are arranged in the cogging mill area and are arranged independently; three universal/two-roll interchangeable rolling mills are arranged in the tandem rolling mill area; four two-roll mills are arranged in the finishing mill area; when heavy H-shaped steel is rolled, all three rolling mills in the tandem rolling mill area adopt a universal mode, a reciprocating rolling mode and a finishing mill group are not used;
When a large steel sheet pile is rolled, all three rolling mills in the tandem rolling mill zone adopt a two-roll mode, and form a seven-stand continuous rolling unit with four finishing mills, so that a large steel sheet pile finished product is rolled at one time;
The rolling process for rolling the heavy H-shaped steel specifically comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; all three frames of the tandem rolling mill adopt universal rolling mills and are rolled in tandem in a reciprocating manner; the two-roller finishing mill group is not used;
Rolling the rolled piece for 5-7 times by a first cogging mill;
Conveying the steel wire to a second cogging mill from a roller way, and rolling the steel wire in the second cogging mill for 3 times; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill is three rolling mills, all the rolling mills are universal rolling mills, and the racks are arranged to be universal-universal edging-universal; the rolled piece is rolled in the tandem rolling mill set for 3-7 times to form heavy H-shaped steel finished products, and the heavy H-shaped steel finished products are sent to a cooling bed for cooling.
2. A composite production process for efficiently producing heavy H-shaped steel and large steel sheet piles is characterized by comprising the following steps of: three sets of rolling mills including a blooming mill section, a tandem mill section and a finishing mill section; two cogging mills are arranged in the cogging mill area and are arranged independently; three universal/two-roll interchangeable rolling mills are arranged in the tandem rolling mill area; four two-roll mills are arranged in the finishing mill area; when heavy H-shaped steel is rolled, three rolling mills in the tandem rolling mill zone adopt two universal modes and one edging mill, and a reciprocating rolling mode is adopted, so that a finishing mill group is not used;
When a large steel sheet pile is rolled, all three rolling mills in the tandem rolling mill zone adopt a two-roll mode, and form a seven-stand continuous rolling unit with four finishing mills, so that a large steel sheet pile finished product is rolled at one time;
the rolling process for rolling the heavy H-shaped steel comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; the tandem rolling mill adopts two universal rolling mills and a two-roller edging mill, and is in tandem arrangement for reciprocating rolling; the two-roller finishing mill group is not used;
Rolling the rolled piece for 5-7 times by a first cogging mill, and conveying the rolled piece to a second cogging mill by a roller way;
Rolling 3 times in a second cogging mill; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill adopts 2 universal and 1 two-roll edging mill, the frame is arranged as universal-edging-universal, the rolled piece is rolled in the tandem rolling mill set for 5-9 times in a reciprocating way, and the rolled piece is rolled into a heavy H-shaped steel finished product, and the heavy H-shaped steel finished product is sent to a cooling bed for cooling.
3. A composite production process for efficiently producing heavy H-shaped steel and large steel sheet piles is characterized by comprising the following steps of: three sets of rolling mills including a blooming mill section, a tandem mill section and a finishing mill section; two cogging mills are arranged in the cogging mill area and are arranged independently; three universal/two-roll interchangeable rolling mills are arranged in the tandem rolling mill area; four two-roll mills are arranged in the finishing mill area; when heavy H-shaped steel is rolled, all three rolling mills in the tandem rolling mill area adopt a universal mode, a reciprocating rolling mode and a finishing mill group are not used; or when heavy H-shaped steel is rolled, three rolling mills in the tandem rolling mill zone adopt two universal modes and one edging mill, the reciprocating rolling mode is adopted, and a finishing mill group is not used;
When a large steel sheet pile is rolled, all three rolling mills in the tandem rolling mill zone adopt a two-roll mode, and form a seven-stand continuous rolling unit with four finishing mills, so that a large steel sheet pile finished product is rolled at one time;
The rolling process for rolling the large steel sheet pile comprises the following steps:
Adopting two blooming mills and rolling a single stand in a reciprocating manner; rolling the rolled piece for 5-7 times by a first cogging mill, and conveying the rolled piece to a second cogging mill by a roller way; rolling 3 times in a second cogging mill; then the transverse moving rack moves to a front roller way of the tandem machine;
The tandem rolling mill is a three-frame rolling mill, and all the tandem rolling mills adopt two-roll rolling mills; and the seven-frame continuous rolling unit is formed together with the four-frame two-roller mill of the finishing mill unit; the rolled piece passes once and is rolled into a large steel sheet pile finished product, and the large steel sheet pile finished product is sent to a cooling bed for cooling.
4. The composite production process for efficiently producing heavy H-shaped steel and large steel sheet piles according to claim 1, wherein: according to the rolling sequence, the rolling sequence is a cogging mill I, a cogging mill II, a tandem mill I, a tandem mill II, a tandem mill III, a finishing mill I, a finishing mill II, a finishing mill III and a finishing mill IV.
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| JPS586705A (en) * | 1981-07-01 | 1983-01-14 | Kawasaki Steel Corp | Rolling method for shape steel |
| JPH07314003A (en) * | 1994-05-30 | 1995-12-05 | Sumitomo Metal Ind Ltd | H-section steel hot rolling method |
| JP2915406B1 (en) * | 1998-08-11 | 1999-07-05 | 川崎重工業株式会社 | Rolling equipment and rolling method for section steel |
| CN217858006U (en) * | 2022-04-29 | 2022-11-22 | 中冶华天工程技术有限公司 | Compound production system of heavy H shaped steel of high-efficient production and steel sheet pile |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001170703A (en) * | 1999-12-16 | 2001-06-26 | Sumitomo Metal Ind Ltd | Straight-type steel sheet pile having Larzen-type joint and method of manufacturing the same |
| CN102794298A (en) * | 2012-08-16 | 2012-11-28 | 中冶赛迪工程技术股份有限公司 | Process and device for rolling H-shaped steel |
| CN107695094B (en) * | 2017-10-12 | 2019-02-22 | 刘庚申 | The production system of H profile steel |
| CN108620434A (en) * | 2018-04-24 | 2018-10-09 | 首钢长治钢铁有限公司 | A kind of X-shaped steel hot rolling molding process method |
| CN109663809A (en) * | 2018-12-18 | 2019-04-23 | 天津市中重科技工程有限公司 | Large-scale and ultra-large H-beam rolling mill practice |
| CN110814024A (en) * | 2019-11-13 | 2020-02-21 | 天津市中重科技工程有限公司 | Medium-large H-shaped steel multi-frame high-rhythm reversible rolling process |
| CN112872027A (en) * | 2020-12-25 | 2021-06-01 | 天津市中重科技工程有限公司 | Novel rolling process for large H-shaped steel |
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- 2022-04-29 CN CN202210472245.9A patent/CN114888077B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586705A (en) * | 1981-07-01 | 1983-01-14 | Kawasaki Steel Corp | Rolling method for shape steel |
| JPH07314003A (en) * | 1994-05-30 | 1995-12-05 | Sumitomo Metal Ind Ltd | H-section steel hot rolling method |
| JP2915406B1 (en) * | 1998-08-11 | 1999-07-05 | 川崎重工業株式会社 | Rolling equipment and rolling method for section steel |
| CN217858006U (en) * | 2022-04-29 | 2022-11-22 | 中冶华天工程技术有限公司 | Compound production system of heavy H shaped steel of high-efficient production and steel sheet pile |
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| CN114888077A (en) | 2022-08-12 |
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