CN109775560B - Novel section deformed steel and production method thereof - Google Patents
Novel section deformed steel and production method thereof Download PDFInfo
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- CN109775560B CN109775560B CN201910117496.3A CN201910117496A CN109775560B CN 109775560 B CN109775560 B CN 109775560B CN 201910117496 A CN201910117496 A CN 201910117496A CN 109775560 B CN109775560 B CN 109775560B
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Abstract
The application provides a novel section deformed steel and a production method thereof, wherein the section deformed steel comprises a web plate, flanges and corners, wherein the flanges are respectively arranged at the left end and the right end of the web plate, and the upper end and the lower end of each flange are respectively provided with one corner; the web, the two flanges and the four corners are integrally formed. The transverse center line of the web is A-A, the vertical center line of the web is B-B, one end of the corner is connected with the flange, and the other end of the corner extends in a direction away from the B-B. The technical scheme of the application improves the production efficiency and the metal utilization rate, reduces the production cost and improves the use economy, and the cross section deformed steel obtained by strengthening the I-steel has strong lateral bending resistance, and compared with the traditional I-steel with a cross section, the cross section is more optimized and the bearing capacity is stronger.
Description
Technical Field
The application relates to the technical field of hot rolled section steel, in particular to a novel section deformed steel and a production method thereof.
Background
Conventional I-steel has very wide application, but in certain professional fields, the conventional I-steel cannot meet the requirements due to small section modulus or weak bearing capacity.
The deformed steel (profiled bar) is generally applied in the professional field, and the sectional shape is different according to the application field.
The deformed steel is widely applied in the fields of storage logistics machinery, engineering machinery, mining machinery and the like, and along with the deep research and the expansion of application, other industries are gradually extended.
Disclosure of Invention
The application aims to provide a novel section deformed steel and a production method thereof. The deformed steel with the cross section is developed on the basis of the I-steel with the common cross section, the I-steel is reinforced by adding corners at the flanges of the I-steel, and the deformed steel with the cross section has strong lateral bending resistance, and compared with the I-steel with the traditional cross section, the deformed steel with the cross section is more optimized and has stronger bearing capacity.
In order to achieve the above object, the present application provides the following technical solutions:
the novel section deformed steel comprises a web plate, flanges and corners, wherein the left end and the right end of the web plate are respectively provided with one flange, and the upper end and the lower end of each flange are respectively provided with one corner; the web, the two flanges and the four corners are integrally formed.
Further, in the sectional deformed steel, a transverse center line of the web is A-A, a vertical center line of the web is B-B, one end of the corner is connected with the flange, and the other end of the corner extends in a direction away from the B-B.
Further, in the sectional deformed steel described above, the side surface of the flange, which is not in contact with the web and is located above the A-A, is an upper side surface, the side surface of the flange, which is not in contact with the web and is located below the A-A, is a lower side surface, the side surface of the flange, which is in contact with the web, is an inner side surface, the side surface of the flange, which is away from the B-B, is an outer side surface, the surface of the corner, which is away from the A-A, the surface of the corner, which is close to the A-A, is an inner surface, and the surface of the other end of the corner is an end surface; the transverse centerline of the flange is collinear with the A-A; the two flanges are bilaterally symmetrical with the B-B as an axis; an included angle alpha is formed between the inner side surface and the surface of the web, and the alpha is an obtuse angle; preferably, the upper side and the lower side are both arranged parallel to the A-A; the outer side surface is perpendicular to the A-A.
Further, in the above cross-sectional deformed steel, the outer surface of the corner located above the A-A is coplanar with the upper side surface, and the outer surface of the corner located below the A-A is coplanar with the lower side surface; an included angle beta is formed between the inner surface and the outer side surface, and the beta is an obtuse angle; the end face is parallel to the outer side face; preferably, the two corners on the same flange are symmetrical up and down about the A-A axis; two of the corners on different flanges and on the same side of the A-A are bilaterally symmetrical about the B-B.
Further, in the cross-section deformed steel, the inner side surface is connected with the surface of the web plate through a first rounded corner; the upper side surface and the lower side surface are in transitional connection with the inner side surface through a second round angle; the outer surface is in transitional connection with the end surface through a third chamfer; the end face is in transitional connection with the inner surface through a fourth rounded corner; the inner surface is in transitional connection with the outer side surface through a fifth rounded corner.
Further, in the above cross-sectional deformed steel, the thickness of one end of the corner is greater than the thickness of the other end of the corner.
On the other hand, a production method of the section special-shaped steel is provided, the section special-shaped steel is formed by rolling blanks, and the production method comprises the following steps:
1) Heating the blank to 1100-1250 ℃;
2) Rough rolling the blank heated in the step 1) by using a cogging mill with a plurality of holes, and obtaining a rolled piece after multi-pass rolling;
3) And 3) performing finish rolling on the rolled piece obtained in the step 2) by using a plurality of universal rolling mills and a plurality of edging mills to obtain the section deformed steel.
Further, in the above production method, the blank has a rectangular structure; in the step 2), the rolling pass of rough rolling is 9-14.
Further, in the above production method, in the step 2), the cogging mill is sequentially provided with six hole patterns of K1, K2, K3, K4, K5, and K6 along the rolling direction, wherein K1, K3, and K5 are longitudinal open cut holes, the longitudinal open cut holes are used for forming the flanges and corners, and K2, K4, and K6 are transverse open cut holes, and the transverse open cut holes are used for expanding and thinning the web.
Further, in the above production method, in the step 3), the universal tandem rolling mill set includes three universal rolling mills U1, U2, and U3 and two edging mills E1 and E2, and the order of arrangement is U1, E1, U2, E2, and U3 in the rolling direction.
Analysis shows that the application discloses a novel section deformed steel and a production method thereof, wherein the section deformed steel is an improvement of the traditional I-steel, four corners are added on the basis of the traditional I-steel, and the corners play a role of reinforcing ribs so as to increase section modulus. In the application, compared with the traditional I-steel, the section deformed steel has stronger bearing capacity and more stable structure. The section deformed steel is mainly used as a guide rail (or called hanging rail) of a hoisting mechanism for transporting personnel or goods.
The technical scheme of the application improves the production efficiency and the metal utilization rate, reduces the production cost and improves the use economy, and the cross section deformed steel obtained by strengthening the I-steel has strong lateral bending resistance, and compared with the traditional I-steel with a cross section, the cross section is more optimized and the bearing capacity is stronger.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
fig. 1 is a schematic vertical cross-section of an embodiment of the present application.
Fig. 2 is a further schematic vertical cross-section of an embodiment of the application.
Fig. 3 is a schematic view of a longitudinal opening slit hole of a cogging mill in a rough rolling stage according to an embodiment of the present application.
Fig. 4 is a schematic view of a transverse opening split hole of a cogging mill in a rough rolling stage according to an embodiment of the present application.
FIG. 5 is a schematic diagram of the pass of a universal mill in the finish rolling stage according to one embodiment of the present application.
FIG. 6 is a schematic diagram of the pass of an edger in the finish stage according to one embodiment of the present application.
FIG. 7 is a schematic diagram of a pass of a universal mill at the finishing stage of an embodiment of the application.
Fig. 8 is a schematic application diagram of an embodiment of the present application.
Reference numerals illustrate: 1, a web plate; 2 flanges; 21 upper side; 22 underside; 23 inner side surfaces; 24 outer sides; 3 corner; 31 an outer surface; 32 inner surfaces; 33 end faces; 4, first rounding; 5, second rounding; 6, third rounding; 7, fourth rounding; 8 fifth rounding; 9, a guide wheel; 10 carrying a device; 11 guide rails (section profile steel);
A-A transverse centerline of the web; the vertical center line of the B-B web plate;
an included angle is formed between the alpha inner side surface and the surface of the web plate;
an included angle is formed between the beta inner surface and the outer side surface.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. The examples are provided by way of explanation of the application and not limitation of the application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present application and do not require that the present application must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. The terms "coupled," "connected," and "configured" as used herein are to be construed broadly and may be, for example, fixedly connected or detachably connected; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1 to 2, according to an embodiment of the present application, a novel cross-sectional profile steel is provided. Including web 1, edge of a wing 2 and turning 3, wherein, be provided with an edge of a wing 2 respectively at the left and right sides both ends of web 1, the upper and lower both ends of every edge of a wing 2 are provided with a turning 3 respectively, and web 1, two edges of a wing 2 and four turning 3 pass through hot rolling integrated into one piece, improve production efficiency and metal utilization, avoided the complexity of technology, reduced manufacturing cost.
Further, one end of the corner 3 is connected to the flange 2, and the other end of the corner 3 extends in a direction away from B-B. The corner 3 arranged on the section deformed steel plays a role of a reinforcing rib, so that the section modulus of the section deformed steel is increased. In the application, compared with the traditional I-steel, the section deformed steel has stronger bearing capacity and more stable structure.
Further, the upper side 21 of the flange is above A-A and is not in contact with the web 1, the lower side 22 of the flange is below A-A and is not in contact with the web 1, and the lower side 22 of the flange is opposite to the upper side 21 of the flange; the inner side 23 of the flange is in contact with the web 1 and the outer side 24 of the flange is remote from B-B, the outer side 24 of the flange being opposite the inner side 23 of the flange. The outer surface 31 of the corner is far away from A-A, the inner surface 32 of the corner is near to A-A, the surface of the other end of the corner 3 is an end surface 33, the transverse center line of the flanges 2 is collinear with A-A, the two flanges 2 are bilaterally symmetrical with each other by taking B-B as an axis, an included angle alpha is formed between the inner side surface 23 and the surface of the web 1, the alpha is an obtuse angle, the upper side surface 21 and the lower side surface 22 are both arranged in parallel with A-A, and the outer side surface 24 is perpendicular to A-A.
Further, the outer surface 31 of the corner 3 above A-A is coplanar with the upper side 21, the outer surface 31 of the corner 3 below A-A is coplanar with the lower side 22, the inner surface 32 forms an angle β with the outer side 24, β is an obtuse angle, and the end surface 33 is parallel with the outer side 24. Preferably, the two corners 3 on the same flange 2 are vertically symmetrical about an axis A-A, and the two corners 3 on different flanges 2 on the same side of A-A are laterally symmetrical about an axis B-B.
Further, the inner side surface 23 is connected with the surface of the web 1 through the first rounded corner 4, the upper side surface 21 and the lower side surface 22 are both in transitional connection with the inner side surface 23 through the second rounded corner 5, the outer surface 31 is in transitional connection with the end surface 33 through the third rounded corner 6, the end surface 33 is in transitional connection with the inner surface 32 through the fourth rounded corner 7, and the inner surface 32 is in transitional connection with the outer side surface 24 through the fifth rounded corner 8.
Further, the thickness of one end of the corner 3 is larger than the thickness of the other end of the corner 3 (as shown in fig. 1, the thickness refers to the distance between the outer surface 31 and the inner surface 32), and the distance between the outer surface 31 and the inner surface 32 becomes gradually shorter in the direction away from B-B, so that the carrying capacity of the sectional profile steel can be further mentioned.
The application also discloses a production method of the novel section special-shaped steel, which is formed by rolling the blank and comprises the following steps:
1) Heating the blank to 1100-1250 ℃;
2) Rough rolling the blank heated in the step 1) by using a cogging mill with a plurality of holes, and obtaining a rolled piece after multi-pass rolling;
3) And 3) performing finish rolling on the rolled piece obtained in the step 2) by using a plurality of universal rolling mills and a plurality of edging mills to obtain the deformed steel with the cross section.
Further, the blank has a rectangular structure, and in the step 2), the rolling pass of rough rolling is 9-14 passes (such as 9 passes, 10 passes, 11 passes, 12 passes, 13 passes, and 14 passes).
Further, in step 2), the cogging mill is sequentially provided with six holes of K1, K2, K3, K4, K5 and K6, wherein K1, K3 and K5 are longitudinal opening cutting holes, the longitudinal opening cutting holes are used for processing the flange 2 and the corner 3 to form the flange 2 and the corner 3, and K2, K4 and K6 are transverse opening cutting holes, and the transverse opening cutting holes are used for expanding and thinning the web 1. Preferably, the opening splitting holes are all vertically symmetrical through a transverse central line and are all laterally symmetrical through a vertical central line.
Further, in step 3), the rolled piece is finish rolled by using a universal tandem rolling unit, wherein the universal tandem rolling unit comprises three universal rolling mills U1, U2 and U3 and two edging machines E1 and E2, and the arrangement sequence is U1, E1, U2, E2 and U3. In the finish rolling process of the rolled piece from the universal rolling mill U1 to the universal rolling mill U2, the size of the thickness T1 of the web plate 1 is gradually thinned, the size of the length L1 of the web plate is gradually increased, and the appearance of the rolled piece is gradually close to the size of a finished product. The edger E1 and the edger E2 are used for processing the outer surfaces of the corners 3, and the thickness T1 of the web 1 is gradually reduced in size during the passage of the profiled bars through the edger E1 and the edger E2. Preferably, the pass of the universal rolling mills U1, U2, U3 and the edging mills E1, E2 are both symmetrical up and down through the transverse centre line, and are both symmetrical left and right through the vertical centre line.
The novel section deformed steel disclosed by the application is mainly used for a guide rail for rail transportation, as shown in fig. 8, guide wheels 9 are arranged on two sides of a web plate 1 of the guide rail 11, the guide wheels 9 can roll on the guide rail 11 along the length direction of the guide rail 11, a bearing device 10 is hung on the guide rail 11 through the guide wheels 9, and the bearing device 10 is used for transporting personnel or goods.
Examples
The billet of this example is a continuous casting billet (material Q345) having a cross section of 160X 160mm, and comprises the steps of:
1) Heating the blank to 1100-1150 ℃;
2) Rough rolling the blank heated in the step 1) by using a cogging mill with 6 holes, and obtaining a rolled piece after 8 times of rolling;
the cogging machine is sequentially provided with six hole patterns of K1, K2, K3, K4, K5 and K6, the cogging machine adopts opening segmentation holes which are vertically and laterally symmetrical, as shown in FIG. 3, K1, K3 and K5 are longitudinal opening segmentation holes, as shown in FIG. 4, and K2, K4 and K6 are transverse opening segmentation holes. The longitudinal opening split holes are used for forming the flange 2 and the corner 3; the transverse opening split hole is used for expanding and thinning the web 1, and the thickness of the web 1 of the rolled piece obtained after rough rolling is 16mm.
3) And 3 universal rolling mills and 2 edging mills are utilized to finish rolling the rolled piece obtained in the step 2) to obtain the deformed steel with the cross section.
The universal continuous rolling unit comprises three universal rolling mills U1, U2 and U3 and two edging mills E1 and E2, and the arrangement sequence is U1, E1, U2, E2 and U3. The pass structure of the universal rolling mills U1 and U2 is shown in FIG. 5, U1 and U2 are used for processing the flange 2 and the corner 3, and the thickness of the rolled piece web 1 subjected to finish rolling by U1 and U2 is 13mm and 10mm respectively. In order to be able to control the height of the flange 2, two edging mills E1 and E2 are provided, the hole pattern of which is shown in fig. 6. Finally, the rolled piece enters a universal rolling mill U3 and generates novel section deformed steel, and the hole pattern structure of the U3 universal rolling mill is shown in figure 7.
The product size parameters of the novel section deformed steel obtained in the embodiment are as follows:
as shown in fig. 2, the web 1 has a thickness T1 of 9mm and a length L1 of 119mm, a vertical distance L2 between the two outer sides 24 of the two flanges 2 of 155mm, a vertical distance L3 between the two end faces 33 of the two corners 3 on the same side of A-A on the different flanges 2 of 198mm, a vertical distance T3 between the two outer surfaces 31 of the same flange 2 of 69mm, and a distance T2 between the junctions of the inner surfaces 32 of the two corners 3 on the same flange 2 and the outer sides 24 of the flanges 2 of 33mm. The radius of the first round angle 4 is 6mm, the radius of the second round angle 5 is 10mm, the radius of the third round angle 6 is 3mm, the radius of the fourth round angle 7 is 4mm, and the radius of the fifth round angle 8 is 6mm.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) The application improves the production efficiency and the metal utilization rate by hot rolling one-step forming.
2) The application avoids the complexity of the process (if one-step forming is not adopted, the reinforcing ribs are arranged, and the subsequent welding process is needed) by hot rolling integrated forming, thereby reducing the production cost and improving the use economy;
3) The deformed steel with the cross section obtained after strengthening the I-steel has strong lateral bending resistance, and compared with the traditional I-steel with the cross section, the deformed steel with the cross section has more optimized cross section and stronger bearing capacity. Through experiments, in the A-A direction, namely the bearing direction, the bending resistance section modulus of the section deformed steel is improved by 32 percent compared with that of the traditional section I-steel.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A novel section deformed steel is characterized by comprising a web plate, a flange and corners, wherein,
the left end and the right end of the web plate are respectively provided with a flange, and the upper end and the lower end of each flange are respectively provided with a corner;
the web, the two flanges and the four corners are integrally formed,
the transverse central line of the web is A-A, the vertical central line of the web is B-B,
one end of the corner is connected with the flange, the other end of the corner extends in a direction away from the B-B,
the side surface of the flange, which is not contacted with the web and is positioned above the A-A, is an upper side surface, the side surface of the flange, which is not contacted with the web and is positioned below the A-A, is a lower side surface, the side surface of the flange, which is contacted with the web, is an inner side surface, the side surface of the flange, which is far away from the B-B, is an outer side surface, the surface of the corner, which is far away from the A-A, is an outer side surface, the surface of the corner, which is close to the A-A, is an inner side surface, and the surface of the other end of the corner is an end surface;
the transverse centerline of the flange is collinear with the A-A;
the two flanges are bilaterally symmetrical with the B-B as an axis;
an included angle alpha is formed between the inner side surface and the surface of the web, and the alpha is an obtuse angle;
the outer surface of the corner above the A-A is coplanar with the upper side, and the outer surface of the corner below the A-A is coplanar with the lower side;
an included angle beta is formed between the inner surface and the outer side surface, and the beta is an obtuse angle;
the end face is parallel to the outer side face;
the inner side surface is connected with the surface of the web plate through a first rounded corner;
the upper side surface and the lower side surface are in transitional connection with the inner side surface through a second round angle;
the outer surface is in transitional connection with the end surface through a third chamfer;
the end face is in transitional connection with the inner surface through a fourth rounded corner;
the inner surface is in transitional connection with the outer side surface through a fifth rounded corner.
2. The profiled bar as claimed in claim 1, wherein,
the upper side surface and the lower side surface are both arranged in parallel with the A-A;
the outer side surface is perpendicular to the A-A.
3. The profiled bar as claimed in claim 1, wherein,
two corners on the same flange are symmetrical up and down by taking the A-A as an axis;
two of the corners on different flanges and on the same side of the A-A are bilaterally symmetrical about the B-B.
4. The profiled bar as claimed in claim 1, wherein,
the thickness of one end of the corner is greater than the thickness of the other end of the corner.
5. A method of producing a section profile steel as claimed in any one of claims 1 to 4, which section profile steel is rolled from a billet, characterized in that the method of producing comprises the steps of:
1) Heating the blank to 1100-1250 ℃;
2) Rough rolling the blank heated in the step 1) by using a cogging mill with a plurality of holes, and obtaining a rolled piece after multi-pass rolling;
3) And 3) performing finish rolling on the rolled piece obtained in the step 2) by using a plurality of universal rolling mills and a plurality of edging mills to obtain the section deformed steel.
6. The method according to claim 5, wherein,
the blank is of a rectangular structure;
in the step 2), the rolling pass of rough rolling is 9-14.
7. The method according to claim 5, wherein,
in the step 2), six hole patterns of K1, K2, K3, K4, K5 and K6 are sequentially arranged along the rolling direction by the cogging mill, wherein K1, K3 and K5 are longitudinal opening cutting holes, the longitudinal opening cutting holes are used for processing and forming flanges and corners, K2, K4 and K6 are transverse opening cutting holes, and the transverse opening cutting holes are used for expanding and thinning the web plate.
8. The method according to claim 5, wherein,
in the step 3), the universal tandem rolling mill set comprises three universal rolling mills U1, U2 and U3 and two edging mills E1 and E2, and the arrangement sequence of the universal tandem rolling mill set along the rolling direction is U1, E1, U2, E2 and U3.
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| CN201910117496.3A CN109775560B (en) | 2019-02-15 | 2019-02-15 | Novel section deformed steel and production method thereof |
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| JP2002028701A (en) * | 2000-05-08 | 2002-01-29 | Nippon Steel Corp | Method for rolling shape having flange and rolling device train |
| CN102215989A (en) * | 2008-11-20 | 2011-10-12 | 杰富意钢铁株式会社 | Process for producing t-bar steel and series of rolling devices |
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