CN214639092U - H-shaped steel flexible rolling rough rolling pass system - Google Patents
H-shaped steel flexible rolling rough rolling pass system Download PDFInfo
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- CN214639092U CN214639092U CN202120584251.4U CN202120584251U CN214639092U CN 214639092 U CN214639092 U CN 214639092U CN 202120584251 U CN202120584251 U CN 202120584251U CN 214639092 U CN214639092 U CN 214639092U
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Abstract
The utility model provides a rough rolling pass system of H shaped steel flexonics, rough rolling pass system comprises the flat rolling pass, the vertical rolling pass, the flat rolling pass is used for reducing web thickness, compression edge of a wing width, the inboard width of control web with the beam blank, the vertical rolling pass is used for pressing the beam blank immediately, makes the inboard height of web reduce to different sizes, obtains the required middle base of different model H shaped steel production. The utility model discloses realize the required middle base of different model H shaped steel of same set of roughing mill pass system production. When H-shaped steel with the same flange width but different models is produced, multiple models of intermediate billets can be rolled by one roughing mill, the roughing mill does not need to change rolls, only the finish rolling mill needs to be changed, the roll changing times are greatly reduced, the production efficiency is improved, and the number of rolls and the production cost are reduced.
Description
Technical Field
The utility model relates to a steel rolling process technical field, in particular to H shaped steel flexible rolling rough rolling pass system.
Background
At present, the production process which is relatively efficient and wide in application in the hot rolling production process of the H-shaped steel comprises the following steps: the method comprises the steps of adopting a special-shaped blank as a blank, heating the blank to 1250-1300 ℃ in a heating furnace, carrying out multi-pass reciprocating rough rolling on the blank by a two-roller rough rolling machine to obtain an intermediate blank with the approximate shape of an H, adopting rollers with a hole type system by the two-roller rough rolling machine, and carrying out rolling by changing hole type positions according to different forming stages. And (3) carrying out pressing and extending processing on a web and a flange by adopting a universal rolling mill, carrying out pressing processing on the end part of the flange by using an edge rolling mill, carrying out rolling deformation on the web and the flange in an H-shaped hole system consisting of a horizontal roller and a vertical roller in the universal rolling mill, controlling the thickness sizes of the web and the flange, controlling the width size of the flange in a two-roller edge rolling mill, and finally finishing the rolling production of the H-shaped steel finished product.
The section of the H-section steel is shown in a figure and is marked with a reference numeral as shown in figure 1, the type is represented by a height H multiplied by a flange width B, the types of the H-section steel are various (for example, 300 multiplied by 300, 390 multiplied by 300 and 440 multiplied by 300), the height H of each type is different, the sizes of the flange width B, the web thickness t1, the flange thickness t2 and the like are possibly the same, namely H is the most main characteristic of the type, and each H corresponds to a Hi (Hi: the inside size height of the H-section steel).
The H-shaped steel is rolled by a universal rolling mill and an edge rolling mill in the finish rolling stage, wherein the horizontal roll width of the universal rolling mill is fixed, as shown in figure 2, the horizontal roll width is used for processing the inner height of the H-shaped steel, namely the inner height Hi of the H-shaped steel is fixed, each universal roll with the fixed horizontal roll width can only produce one type of H-shaped steel, and the width of the horizontal roll is the most main parameter of each type of H-shaped steel in the finish rolling stage. The pass system of the two-roller type roughing mill is designed according to the equal size of the horizontal roller width of the universal mill in the finish rolling stage, and the width of each horizontal roller corresponds to a set of roughing pass system with the fixed inner side size and height of a web plate. Therefore, each type of H-shaped steel corresponds to one set of rough mill pass system and finishing mill universal horizontal roll.
The same sleeve pass system and the rollers can not produce H-shaped steel of different models, the rollers need to be replaced when the H-shaped steel of different models is produced, and the production mode brings a series of problems, such as greatly increased production time and cost, incapability of flexibly organizing and producing multi-specification small-batch orders, lower production efficiency and the like.
Therefore, it is necessary to provide an improved technical solution for overcoming the above-mentioned deficiencies in the prior art, so as to improve the production efficiency of H-shaped steel and reduce the cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a H shaped steel is flexible rolls rough rolling pass system, to prior art's not enough and research blank, solved in the steel production process problem that roll change is frequent, manufacturing cost is high. The utility model discloses to the same different model H shaped steel of edge of a wing width (for example H300X 300, H390X 300, H440X 300 etc.), provide a H shaped steel flexonics rolling rough rolling pass system, carry out web thickness attenuate to the allotype blank through the flat rolling pass, the compression of edge of a wing width, the inboard width of control web, press immediately to the allotype blank through rolling the pass immediately, adjustment roll draft, make the inboard height of web reduce to different sizes, it reaches the required middle base size of different model H shaped steel production to make it, realize the required middle base of different model H shaped steel of same set of rough rolling mill pass system production, reduce the roll change number of times by a wide margin, and the production efficiency is improved.
In order to achieve the above object, the present invention provides the following technical solutions:
a rough rolling pass system for H-shaped steel flexible rolling comprises a flat rolling pass and an upright rolling pass, wherein the flat rolling pass is used for reducing the thickness of a web of a special-shaped blank, compressing the width of the flange and controlling the width of the inner side of the web, and the upright rolling pass is used for carrying out upright pressing on the special-shaped blank so as to reduce the height of the inner side of the web to different sizes and obtain intermediate blanks required by the production of H-shaped steel of different models.
Further, in the above-mentioned rough rolling pass system for H-beam flexible rolling, the flat rolling pass is a cross section enclosed by a groove of an upper roller, a groove of a lower roller and a roll gap of the rough rolling mill, the groove of the upper roller and the groove of the lower roller are symmetric along an axis AA, the upper roller and the lower roller are symmetric along an axis AA, the upper roller can move upward along an axis CC, and the lower roller can move downward along the axis CC.
Further, in the H-shaped steel flexible rolling rough pass system, the vertical rolling pass E has a cross section defined by grooves of an upper roll, grooves of a lower roll and a roll gap of the rough rolling mill, the grooves of the upper roll and the grooves of the lower roll are symmetrical along an axis AA, the upper roll and the lower roll are symmetrical along an axis AA, the upper roll can move upward along an axis BB, and the lower roll can move downward along the axis BB.
In the H-section steel flexible rolling rough pass system, the groove depth B of the flat pass is B1- Δ, where B1 is the minimum half-leg height of the H-section steel, and Δ is 5mm to 10 mm.
In the H-section steel flexible rolling rough pass system, the height l of the inner side of the web plate of the flat rolling pass is BH- Δ t, where BH is the width of the horizontal roll of the maximum H-section steel universal rolling mill, and Δ t is 10mm to 15 mm.
Further, in the above-mentioned H-section steel soft rolling rough pass system, the groove width t of the flat pass is equal to the maximum type H-section steel flange thickness t2 × the average elongation coefficient λ at the finish rolling stage, and the position t is 1/2 of the groove depth of the pass.
Further, in the above-mentioned rough rolling pass system for H-beam flexible rolling, the groove bottom width he of the vertical rolling pass is 2 × the groove depth b of the horizontal rolling pass + the web thickness of the maximum type H-beam intermediate slab.
Further, in the H-beam roughing pass system, the depth range of the vertical rolling pass groove is from be to b.
The analysis can know that the utility model discloses a rough rolling pass system for H-shaped steel flexible rolling, which is compared with the prior art that each type of H-shaped steel produced needs a set of corresponding rough rolling pass, rough rolling roll and finish rolling roll, and provides a rough rolling pass system for H-shaped steel flexible rolling aiming at different types of H-shaped steel (such as H300 multiplied by 300, H390 multiplied by 300, H440 multiplied by 300 and the like) with the same flange width, wherein the rough rolling pass system comprises a flat rolling pass and a vertical rolling pass, the special-shaped blank is subjected to web thickness reduction and flange width compression through a flat rolling pass, the width of the inner side of the web is controlled, the special-shaped blank is vertically pressed through the vertical rolling pass, the rolling reduction is adjusted, the height of the inner side of the web plate is reduced to different sizes, the size of an intermediate blank required by the production of H-shaped steel of different models is achieved, and the intermediate blank required by the production of H-shaped steel of different models by the same roughing mill pass system is achieved. When H-shaped steel with the same flange width but different models is produced, multiple models of intermediate billets can be rolled by one roughing mill, the roughing mill does not need to change rolls, only the finish rolling mill needs to be changed, the roll changing times are greatly reduced, the production efficiency is improved, and the number of rolls and the production cost are reduced.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a schematic cross-sectional view of an H-shaped steel;
FIG. 2 is a schematic view of a universal mill roll;
fig. 3 is the rough rolling pass system of the present invention.
Description of reference numerals: an upper roll 1; a rolling groove 11; a rolling groove 12; a lower roll 2; a rolling groove 21; a rolling groove 22; a roll gap 5; a roll gap 6; 7, standing a stick; 8-H section steel;
d-flat rolling pass; e-vertical rolling pass; h-height; b-flange width; b1-half leg height; b-groove depth; t-the width of the rolling groove of the flat rolling pass; t 1-web thickness, t 2-flange thickness; hi-inside dimension height; l-height of the inner side of the web; width of BH-horizontal roll; he is the groove bottom width of the vertical rolling hole type; the depth range of the be-vertical rolling hole type rolling groove; s-thickness of the roll gap.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," and "third," etc. may be used interchangeably to distinguish one component from another, and are not intended to denote the position or importance of the individual components.
As shown in fig. 1 to 3, according to the embodiment of the utility model discloses a rough rolling pass system is rolled to H shaped steel flexibility is provided, rough rolling pass system comprises flat rolling pass D, edgewise pass E, flat rolling pass D is used for reducing web thickness, compression flange width, the inboard width of control web with the beam blank, edgewise rolling pass E is used for carrying out the vertical compression with the beam blank, and the adjustment roll reduction makes the inboard height of web reduce to different sizes, obtains the required middle base of different model H shaped steel production.
The utility model relates to a flexible rolling mainly is the flexible rolling of overall dimension, and the blank of same model adopts same pass system to carry out rough rolling, sets for through the roll gap that changes the difference, realizes the production of blank in the middle of the unidimensional, and one set of roughing mill just can accomplish the middle blank rolling of polytypic, and the roughing mill need not to change the roller, only needs to change the finish rolling mill, reduces the roll change number of times by a wide margin, improves production efficiency, has reduced the quantity and the manufacturing cost of roll.
As shown in fig. 2, the rolling roll of the universal rolling mill includes two flat rolls, which are the upper roll 1 and the lower roll 2, and two vertical rolls 7 for rolling the H-section steel 8.
The roughing pass system comprises a flat rolling pass D and a vertical rolling pass E, the flat rolling pass D is a section surrounded by a rolling groove 11 of an upper roller 1 of the roughing mill, a rolling groove 21 of a lower roller 2 and a roll gap 5, the rolling groove 11 and the rolling groove 21 are symmetrical along an axis AA, the upper roller 1 and the lower roller 2 are symmetrical along the axis AA, the upper roller 1 can move upwards along an axis CC, and the lower roller 2 can move downwards along the axis CC. The vertical rolling pass E is a cross section surrounded by a rolling groove 12 of an upper roller 1, a rolling groove 22 of a lower roller 2 and a roll gap 6 of the roughing mill, the rolling groove 12 and the rolling groove 22 are symmetrical along an AA axis, the upper roller 1 and the lower roller 2 are symmetrical along the AA axis, the upper roller 1 can move upwards along an axis BB, and the lower roller 2 can move downwards along the axis BB.
The profile blank is in the roughing pass system provided by the utility model, carry out rolling process through two roller roughing mills in, make the inboard height of web reduce to different sizes, reach the required middle base size of different model H shaped steel production, realize the required middle base of different model H shaped steel of same set of roughing mill pass system production, reduce roll change number of times, improvement production efficiency by a wide margin.
The special-shaped blank is subjected to web thickness reduction and flange width compression through the flat rolling pass D, the width of the inner side of the web is controlled, the special-shaped blank is subjected to vertical pressing through the vertical rolling pass E, the rolling reduction is adjusted, the height of the inner side of the web is reduced to different sizes, the special-shaped blank reaches the size of an intermediate blank required by production of H-shaped steel of different models, the intermediate blank required by production of H-shaped steel of different models through the same roughing mill pass system is realized, the roll changing times are greatly reduced, and the production efficiency is improved.
Further, the utility model discloses a flat rolling pass, the vertical rolling pass of an embodiment have done following numerical design:
and the groove depth B of the flat pass is B1-delta, wherein B1 is the half leg height of the minimum type H-shaped steel. The utility model relates to a flange width B of different model H shaped steel is equal, but because of its web thickness t1 inequality, therefore half leg height B1 all inequality, and half leg height B1 of minimum model H shaped steel is the biggest, because of B1 value depends on rough rolling flat rolling pass's groove depth B, B1 be B +. DELTA (delta is the spread volume), so for ensureing biggest B1 value, the setting of flat rolling pass's groove depth B will be set for according to minimum model H shaped steel half leg height B1 value. The flange width (2B + S) of the intermediate billet obtained after the rough rolling is finished is rolled in a finishing mill group, flange spread delta is generated according to the rolling reduction, B is equal to (B1-delta), and the spread delta is generally 5 mm-10 mm, such as 5mm, 6mm, 7mm, 8mm, 9mm and 10 mm. The expansion coefficient is generally 0.12 according to empirical values, the rolling reduction of the finished product obtained by finish rolling of the intermediate billet is about 40-90 mm, and the flange expansion delta is the expansion coefficient multiplied by the rolling reduction and is generally 5-10 mm by calculation.
And the height l of the inner side of the web plate of the flat rolling hole type is BH-delta t, wherein BH is the width of the horizontal roller of the H-shaped steel universal rolling mill with the largest model. The utility model relates to a H shaped steel of different shaped steel, BH value inequality, BH value are the horizontal roller width, with the inboard size height Hi one-to-one of H shaped steel, the model is big more, and its inboard size height Hi is big more, and the width BH that corresponds required horizontal roller is also big more. The H-shaped steel is rolled by expanding the waist, the height l of the inner side of the web plate of an intermediate billet obtained after rough rolling is finished is subjected to finish rolling, after the finish rolling is carried out, the height l of the inner side of the web plate is the same as the width BH of a horizontal roller of a universal rolling mill, and BH (l + [ delta ] t (delta ] t is the waist expanding amount), so that the height l of the inner side of the flat-rolled hole type web plate is set according to the width BH of the horizontal roller of the universal rolling mill of the H-shaped steel of the maximum type in order to ensure the maximum BH value. And the height of the inner side of the flange of the intermediate billet obtained after the rough rolling is finished is l, the intermediate billet enters a finishing mill group for rolling, and the waist expanding amount delta t is generated, wherein l is BH-delta t, and the waist expanding amount delta t is generally 10 mm-15 mm, such as 10mm, 11mm, 12mm, 13mm, 14mm and 15 mm. The waist expanding amount can ensure that the intermediate billet has better biting effect after being subjected to a finishing mill, namely the intermediate billet can easily enter the finishing mill, otherwise the biting effect is not good enough.
And the width t of the flat rolling groove is equal to the maximum thickness t2 of the flange of the H-shaped steel, multiplied by the average extension coefficient lambda in the finish rolling stage, and the position t is 1/2 of the depth b of the groove. The average elongation coefficient lambda is about 2.5-10 (e.g., 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10).
The groove bottom width he of the vertical rolling groove is 2 multiplied by the groove depth b of the groove type of the flat rolling and the web thickness of the maximum type H-shaped steel intermediate billet.
The depth range of the vertical rolling hole type groove is be equal to the depth b of a flat rolling hole type groove to the width t of the flat rolling hole type groove.
The method for rolling the H-shaped steel by utilizing the H-shaped steel flexible rolling rough rolling pass system comprises the following steps:
1) heating: loading the beam blank into a heating furnace for heating, and then discharging from the furnace for dephosphorization;
the heating temperature is controlled at 1250 deg.C to 1300 deg.C, such as 1250 deg.C, 1255 deg.C, 1260 deg.C, 1265 deg.C, 1270 deg.C, 1275 deg.C, 1280 deg.C, 1285 deg.C, 1290 deg.C, 1295 deg.C, 1300 deg.C. The heating time is 2 to 4 hours, such as 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours.
2) Rough rolling: the two-roller roughing mill of the flexible rolling pass system is adopted to roll the special-shaped blank to obtain intermediate blanks required by the production of H-shaped steel of different models.
Firstly, the steel plate enters the flat rolling pass to be rolled for 5-9 times, the roll gap is gradually reduced, the thickness of the web plate is reduced, the width of the flange is compressed, and the width of the inner side of the web plate is controlled. After the flat rolling pass is rolled, the rolled piece is rotated by 90 degrees and erected, the rolled piece enters the vertical rolling pass to be rolled for 2-4 times, the profiled blank is vertically pressed through the vertical rolling pass, the rolling reduction of the roller is adjusted, the roll gap of the vertical rolling pass is gradually reduced, the inner height of the web plate is reduced to different sizes, and intermediate blanks required by the production of H-shaped steel of different types are obtained and reach the sizes of the intermediate blanks required by the production of H-shaped steel of different types.
3) Finish rolling: and (3) carrying out finish rolling on the intermediate blank prepared in the step 2) in a universal rolling mill, carrying out multi-pass rolling, wherein the total rolling pass is 5-9 rolling passes, and carrying out reciprocating rolling to obtain the H-shaped steel. And (4) respectively carrying out rolling by a universal roughing mill, rolling by an edge rolling machine and rolling by a universal finishing mill in each rolling pass, and finally obtaining the H-shaped steel product.
In the H-shaped steel: h-height, B-flange width, t 1-web thickness, t 2-flange thickness, Hi-inboard dimension height, B1-flange half leg height.
The specification expression method of the H-shaped steel comprises the following steps: h and height H value x flange width B value x web thickness t1 value x flange thickness t2 value, for example: H300X 10X 15.
Example 1
The rough rolling adopts a two-roller rolling mill, the finishing rolling mill adopts a universal rolling mill and an edge rolling mill, the billet adopts a special-shaped blank, and the types of the H-shaped steel are H300 multiplied by 300, H390 multiplied by 300 and H440 multiplied by 300. The utility model provides a pass system comprises a normal flat rolling pass D and a vertical rolling pass E, and the rolling groove depth b of the flat rolling pass D is 138 mm; the height l of the inner side of the web plate of the flat rolling pass is 397; the groove width t of the flat rolling pass D is 97mm, and the groove bottom width he of the vertical rolling pass D is 320 mm; the groove depth of the vertical pass E is 120 mm.
The rolling method of the H-shaped steel based on the rough rolling mill pass system comprises the following steps:
1) heating: loading the beam blank into a heating furnace for heating, controlling the heating temperature to be 1250-1280 ℃, controlling the heating time to be 2-4 hours, and then discharging the beam blank out of the furnace for dephosphorization;
2) rough rolling: rolling the special-shaped blank by adopting a two-roller roughing mill with the flexible rolling pass system, firstly entering the flat rolling pass D to perform 7-pass rolling, gradually reducing the roll gap, reducing the thickness of a web to 45mm, turning over steel by 90 degrees after the rolling is finished, standing a rolled piece, entering a vertical rolling pass E to perform 2-pass rolling, performing vertical pressing on the special-shaped blank through the vertical rolling pass, adjusting the rolling reduction, and gradually reducing the roll gap of the vertical rolling pass 2 to ensure that the inner side height of the web is 397mm (no pressing), 350mm and 261mm respectively;
2) finish rolling: the intermediate billet prepared in the step 2) enters a universal mill for finish rolling, an H440 x 300 special universal roll (the width of a horizontal roll is 407mm) and an edge rolling roll are adopted, the total rolling pass is 7, and H-shaped steel of H440 x 300 type is prepared by reciprocating rolling; adopting an H390 x 300 special universal roll (the width of a horizontal roll is 361mm) and an edge rolling roll, wherein the total rolling pass is 5, and preparing H-shaped steel of H300 x 300 type by reciprocating rolling; the H-shaped steel with the H300 multiplied by 300 model is manufactured by adopting an H-shaped steel rolling mill with the H300 multiplied by 300 special universal mill roll (the width of a horizontal roll is 272mm) and an edge rolling mill roll and 5 total rolling passes through reciprocating rolling.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
1) the utility model provides a rough rolling pass system of H shaped steel flexonics, rough rolling pass system include the flat rolling pass D and immediately roll pass E, and the flat rolling pass D carries out web thickness attenuate, edge of a wing width compression, the inboard width of control web, immediately rolls pass E and immediately presses, reduces the inboard height of web.
2) The process the utility model provides a rough rolling pass system of H shaped steel flexonics, when the same but the different H shaped steel of model of production edge of a wing width, the rolling of the middle base of polytypic just can be accomplished to one set of roughing mill, and the roughing mill need not to change the roller, only needs to change finish rolling mill, reduces the number of roller changing times, improves production efficiency, has reduced the quantity and the manufacturing cost of roll by a wide margin.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A rough rolling pass system for H-shaped steel flexible rolling is characterized in that,
the rough rolling pass system consists of a flat rolling pass and a vertical rolling pass,
the flat rolling pass is used for reducing the thickness of the web of the beam blank, compressing the width of the web and controlling the width of the inner side of the web,
the vertical rolling pass is used for vertically pressing the special-shaped blank to reduce the height of the inner side of the web plate to different sizes,
obtaining intermediate billets required by the production of H-shaped steel with different models.
2. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
the flat rolling hole pattern is a cross section enclosed by a rolling groove of an upper roller, a rolling groove of a lower roller and a roll gap of a roughing mill, the rolling groove of the upper roller and the rolling groove of the lower roller are symmetrical along an axis AA, the upper roller and the lower roller are symmetrical along the axis AA, the upper roller can move upwards along an axis CC, and the lower roller can move downwards along the axis CC.
3. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
the vertical rolling hole type E is a cross section enclosed by a rolling groove of an upper roller, a rolling groove of a lower roller and a roll gap of the roughing mill, the rolling groove of the upper roller and the rolling groove of the lower roller are symmetrical along an AA axis, the upper roller and the lower roller are symmetrical along the AA axis, the upper roller can move upwards along an axis BB, and the lower roller can move downwards along the axis BB.
4. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
the groove depth B of the flat rolling pass is B1-delta, wherein B1 is the half leg height of the minimum type H-shaped steel, and delta is 5-10 mm.
5. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
the height l of the inner side of the web plate of the flat rolling pass is BH-delta t, wherein BH is the width of the horizontal roller of the maximum type H-shaped steel universal rolling mill, and delta t is 10-15 mm.
6. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
and the width t of the flat rolling groove is equal to the maximum flange thickness t2 of the H-shaped steel, multiplied by the average extension coefficient lambda in the finish rolling stage, and the position t is 1/2 of the depth of the groove.
7. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
and the groove bottom width he of the vertical rolling pass is 2 multiplied by the groove depth b of the flat rolling pass and the web thickness of the maximum type H-shaped steel intermediate billet.
8. The H-shaped steel flexible rolling rough rolling pass system according to claim 1,
the depth range be of the vertical rolling hole type groove is equal to the depth b of the flat rolling hole type groove and the width t of the flat rolling hole type groove.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117282846A (en) * | 2023-10-09 | 2023-12-26 | 江苏迈奇重工机械有限公司 | Fastener hot briquetting equipment |
| CN117282846B (en) * | 2023-10-09 | 2024-05-10 | 江苏迈奇重工机械有限公司 | Fastener hot briquetting equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117282846A (en) * | 2023-10-09 | 2023-12-26 | 江苏迈奇重工机械有限公司 | Fastener hot briquetting equipment |
| CN117282846B (en) * | 2023-10-09 | 2024-05-10 | 江苏迈奇重工机械有限公司 | Fastener hot briquetting equipment |
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