CN202893802U - H-section steel rolling equipment - Google Patents
H-section steel rolling equipment Download PDFInfo
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- CN202893802U CN202893802U CN 201220598002 CN201220598002U CN202893802U CN 202893802 U CN202893802 U CN 202893802U CN 201220598002 CN201220598002 CN 201220598002 CN 201220598002 U CN201220598002 U CN 201220598002U CN 202893802 U CN202893802 U CN 202893802U
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Abstract
The utility model provides H-section steel rolling equipment. The equipment comprises a breakdown mill and a finishing mill group, wherein the finishing mill group comprises an intermediate universal rolling mill, an edging mill and a universal finishing mill which are arranged in turn; and the breakdown mill has a plurality of rolling hole patterns. The H-section steel rolling equipment is characterized in that a plurality of rolling hole patterns comprise a first horizontal rolling hole pattern, a second horizontal rolling hole pattern and a third horizontal rolling hole pattern; and the lengths among the outsides of the hole patterns of the first horizontal rolling hole pattern, the second horizontal rolling hole pattern and the third horizontal rolling hole pattern are increased in turn. The equipment provides the breakdown mill which comprises a plurality of horizontal rolling hole patterns; the breakdown rolling passes can be reduced; and the rolling passes of the finishing mill group can also be reduced. By the H-section steel rolling equipment, the rolling passes can be greatly reduced; and the cost can be reduced.
Description
Technical field
The utility model relates to a kind of rolling of sectional iron equipment, relates in particular to a kind of H rolling of sectional iron equipment, belongs to the Metal Forming field shaping technique.
Background technology
H shaped steel is as a kind of economic section shaped steel, compare with common I-steel, have that modulus of section is large, bending resistance is strong, light unit weight, good looking appearance, structure are convenient, save man-hour, reduce construction costs and can be processing regenerated etc. advantage, be widely used in the engineering structures such as the industrial equipment frameworks such as steel construction support bracket, petrochemical industry and electric power, LARGE SPAN STEEL BRIDGE member, machinery, vehicle, boats and ships frame structure, underground railway and overpass member of the structural elements such as beam in industry and the civil buildings steel construction or post, industrial structure.In recent years, along with the increase of H shaped steel demand, H shaped steel output was also in continuous increase, and the theoretical research of H rolling of sectional iron is also being deepened constantly.
Be that the Chinese patent application of CN1175914A has been announced a kind of method of rolled section steel and produced the equipment of shaped steel such as notification number, it can improve unit consumption, dimensional accuracy and the rolling stability of roll, and high productivity ratio is arranged.Make material that the dog bone shape by one or more big mill (BD) or analog roughing wants to be rolled by using one to carry out that X-shaped rolling middle universal mill (UR), a rapid moving change that vertical miller (QE) and is used for carrying out the rolling universal finishing mill (UF) that forms thus the edge of a wing in both sides of H shape and by reversibly rolling.
Development along with continuous casting technology, producing at present H shaped steel adopts Hot Metal in Beam Blank to be rolled substantially, common H shaped steel continuous casting billet generally is divided into BB1, BB2, three kinds of specifications of BB3, the structure of three kinds of specification continuous casting billets is similar to shown in Figure 1 substantially, but parameters is not identical, and for example length L 1, L2 and width L3, L4 are not identical.Wherein BB1 continuous casting billet specification is minimum, and BB2 continuous casting billet specification is taken second place, and BB3 continuous casting billet specification is maximum, and for example, for the BB2 continuous casting billet, length L 1, L2 are approximately respectively 750mm, 510mm, and width L3, L4 are approximately respectively 90mm, 370mm; For the BB3 continuous casting billet, length L 1, L2 are approximately respectively 1024mm, 740mm, and width L3, L4 are approximately respectively 90mm, 390mm.In addition, the R1/R2/L8/L9 of BB2 continuous casting billet is respectively the mm of 20/70/70/140(unit), the R1/R2/L8/L9 of BB3 continuous casting billet is respectively the mm of 20/70/88.1/150(unit).
At present, the H shaped steel of rolling H N800mm * 300mm specification generally adopts the BB3 continuous casting billet, because this specification continuous casting billet is maximum, therefore when rolling H N800mm * 300mm specification H shaped steel, via the roughing of BD milling train, the pass of BD milling train comprises in other words edging pass 20 of horizontal rolling groove 10 and box pass 20(as shown in Figure 2).In addition, during rolling H N800mm * 300mm specification H shaped steel, rolling pass is 20, BD mill milling 11 passages wherein, and TM mill milling 9 passages, apparent, when utilizing the prior art rolled h-section steel beam, exist the high defective of rolling cost.
The utility model content
The purpose of this utility model is to provide a kind of cheaply H rolling of sectional iron Apparatus and method for, to solve the existing high problem of H rolling of sectional iron cost.
In order to address the above problem, the utility model provides a kind of H rolling of sectional iron equipment, it comprises big mill (being called for short BD) and mm finishing mill unit, described mm finishing mill unit (also is tandem mill, abbreviation TM) comprises middle universal mill (being called for short UR), vertical miller (being called for short E), the universal finishing mill (being called for short UF) that sets gradually, described big mill has multiple rolling groove, it is characterized in that, described multiple rolling groove comprises: the first horizontal rolling groove, the second horizontal rolling groove and the 3rd horizontal rolling groove; Length between the pass outside of the described first horizontal rolling groove, the second horizontal rolling groove and the 3rd horizontal rolling groove increases successively.
According to a kind of preferred embodiment of above-mentioned H rolling of sectional iron equipment, wherein, the described first horizontal rolling groove and the second horizontal rolling groove are arranged in a crossed manner.
A kind of preferred embodiment according to above-mentioned H rolling of sectional iron equipment, wherein, length between the pass outside of described the first horizontal rolling groove is 830mm, length between the pass outside of described the second horizontal rolling groove is 916mm, and the length between the pass outside of described the 3rd horizontal rolling groove is 934mm.
According to a kind of preferred embodiment of above-mentioned H rolling of sectional iron equipment, wherein, the specification of described H shaped steel is HN800mm * 300mm.
In order to address the above problem, the utility model provides a kind of H rolling process for steel section, it utilizes above-mentioned arbitrary described rolling equipment to come rolled h-section steel beam, and may further comprise the steps: utilize described big mill that continuous casting billet is carried out split rolling method, be specially, continuous casting billet is entered rolling a time of the described first horizontal rolling groove of described big mill, follow back to roll and enter the described second horizontal rolling groove, then rolling a time enters the described the 3rd horizontal rolling groove, back and forth rolling 7 passages; Then utilize rolling continuous casting billet 5 passages afterwards of the rolling described big mill of described mm finishing mill unit.
According to a kind of preferred embodiment of above-mentioned H rolling process for steel section, wherein, in the second rolling passage of described mm finishing mill unit, the application of omitting described vertical miller.
According to a kind of preferred embodiment of above-mentioned H rolling process for steel section, wherein, described continuous casting billet is BB2 specification H shaped steel continuous casting billet.
The utility model provides the big mill that comprises multiple horizontal rolling groove, can reduce the split rolling method passage, secondly, can also reduce the rolling pass of mm finishing mill unit, and whereby, the utility model can significantly reduce rolling pass, reduces cost.
Description of drawings
Fig. 1 is the structural representation of BB2/BB3 specification continuous casting billet;
Fig. 2 is the pass structure schematic diagram (dimensional units mm among the figure) of existing big mill;
The pass structure schematic diagram (dimensional units mm among the figure) of the big mill that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the rolling procedure sketch of the big mill of the utility model embodiment;
Fig. 5 is the rolling procedure sketch of the mm finishing mill unit of the utility model embodiment.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
The utility model provides a kind of cheaply H rolling of sectional iron equipment, as prior art, this equipment comprises big mill and mm finishing mill unit, and mm finishing mill unit comprises middle universal mill, vertical miller, the universal finishing mill that sets gradually, and big mill has multiple rolling groove.As shown in Figure 3, the multiple rolling groove of the big mill of the utility model embodiment comprises the first horizontal rolling groove 30, the second horizontal rolling groove 40 and the 3rd horizontal rolling groove 50.
Length between the pass outside of the first horizontal rolling groove 30, the second horizontal rolling groove 40 and the 3rd horizontal rolling groove 50 increases successively, also is that length L 5, L6, L7 increase successively.In addition, pass 30,40,50 groove rolling center line are identical.
In the present embodiment, the first horizontal rolling groove 30 and the second horizontal rolling groove 40 are arranged in a crossed manner, and the left groove of the first horizontal rolling groove 30 is between the left and right sides groove of the second horizontal rolling groove 40.
The advantage of cross-over design pass is to improve the utilization rate of roll, arranges a plurality of passes at the roll of finite length, has solved the technical barrier that is subjected to the barrel length restriction and can not arranges at same roll a plurality of passes.But, when barrel length is enough, the also groove of pass arranged in a crossed manner not.
In addition, length L 5 between the pass outside (outside of left and right sides groove) of the first horizontal rolling groove 30 of the present embodiment is 830mm, length L 6 between the pass outside of the second horizontal rolling groove 40 is 916mm, length L 7 between the pass outside of the 3rd horizontal rolling groove 50 is 934mm, and the width of pass 30 (or perhaps degree of depth) is 270mm for the width of 280mm pass 40 and pass 50.Width 280mm/270mm refers to the size of groove on above-below direction, indicates among the figure and need to deduct gap values between rollers, and the gap values between rollers in this example is 20mm.The pass of above-mentioned specification preferably is applicable to rolling H N800mm * 300mm specification H shaped steel.
As shown in Figure 3, other dimensionings in the roll can be determined according to the length of roll itself, distance such as the left groove intermediate point of the horizontal rolling groove 30 of mid point to the first of the length L 7 of the 3rd horizontal rolling groove 50 is 1066mm, and the distance of the right groove inside edge point of the horizontal rolling groove 40 of left groove intermediate point to the first of the first horizontal rolling groove 30 is 358mm.
When implementing the utility model rolling H N800mm * 300mm specification H shaped steel, in order to save cost, continuous casting billet is the BB2 specification.
The big mill that utilization has pass shown in Figure 3 carries out split rolling method to continuous casting billet, be specially, after continuous casting billet goes out heating furnace, through the high pressure dephosphorization, as shown in Figure 4, continuous casting billet at first enters first horizontal rolling groove 30 rolling a time of big mill, follow back to roll and enter the second horizontal rolling groove 40, then rolling a time enters the 3rd horizontal rolling groove 50, back and forth rolling 7 passages.Then as shown in Figure 5, utilize mm finishing mill unit rolling by rolling continuous casting billet 5 passages afterwards of big mill.Wherein, when rolling the second passage of mm finishing mill unit, the application of omitting vertical miller (E).Wherein, the arrangement of mm finishing mill unit is UR-E-UF, and mm finishing mill unit generally all is reversable mill, and is from UF out just in time opposite in the time of contrary rolling after UR rolls in the past, from UF roll into, from UR out.
When the present embodiment production specification is HN800mm * 300mmH shaped steel, adopt pass shown in Figure 3 and Fig. 3, rules shown in Figure 4, the whole operation of rolling is compared original production technology and is reduced to 14 rolling passes, and because BB2 continuous casting billet specification is less than BB3 continuous casting billet, and all be rolling H N800mm * 300mm at last, mean that employing BB2 Compression Ratio of Casting Billet is larger, be conducive to improve the structure property of rolled piece.
Utilize pass of the present utility model, utility model people utilize the BB2 continuous casting billet according to the rolling procedure shown in the following table 1 success rolling HN800mm * 300mm specification H shaped steel.
In following table 1, each implication English or abbreviation is as follows.RUN: passage, GROOVE: (wherein 1/C represents the first passage and adopts the first horizontal rolling groove 30 the hole model, second passage that represents 2/B adopts the second horizontal rolling groove 40, and the 3rd horizontal rolling groove 50 reciprocal rolling 7 passages are adopted in the 3/A representative), H-Roll gap: roller spacing; Groove depth total: pass total depth; Rolling speed: mill speed; Leaving speed: throw steel speed; K_in: the coefficient of nipping; K _ ntry: normal rolling coefficient; K_exit: the coefficient of dishing out; Sta.: frame (refer to the frame of mm finishing mill unit, universal mill, E referred to that vertical miller, UF refer to universal finishing mill in the middle of wherein UR referred to); ' a ' Thick: web thickness; Flange Thick: edge of a wing thickness; Work Dia.: work roll diameter; Speed: speed; Roll time: rolling time; Dead Time: the empty roller time, the first half is the BD rolling procedure in the table 1, and the latter half is the TM rolling procedure.
Table 1 utilizes the rolling procedure of BB2 continuous casting billet milling HN800mm * 300mm specification H shaped steel
To sum up, the utility model can be obtained following advantage:
1, can use BB2 continuous casting billet milling HN800mm * 300mm specification H shaped steel, enlarge the source of rolling stock.
2, reduce the rolling pass of HN800mm * 300mm specification H shaped steel, reduced to 14 passages by 20 original passages, greatly reduced rolling cost.
3, adopt BB2 continuous casting billet milling HN800mm * 300mm specification H shaped steel, the compression ratio of rolled piece is larger, is conducive to improve the structure property of rolled piece.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (4)
1. H rolling of sectional iron equipment, comprise big mill and mm finishing mill unit, described mm finishing mill unit comprises middle universal mill, vertical miller, the universal finishing mill that sets gradually, described big mill has multiple rolling groove, it is characterized in that, described multiple rolling groove comprises: the first horizontal rolling groove, the second horizontal rolling groove and the 3rd horizontal rolling groove;
Length between the pass outside of the described first horizontal rolling groove, the second horizontal rolling groove and the 3rd horizontal rolling groove increases successively.
2. H rolling of sectional iron equipment according to claim 1 is characterized in that,
The described first horizontal rolling groove and the second horizontal rolling groove are arranged in a crossed manner.
3. H rolling of sectional iron equipment according to claim 1 is characterized in that,
Length between the pass outside of described the first horizontal rolling groove is 830mm, and the length between the pass outside of described the second horizontal rolling groove is 916mm, and the length between the pass outside of described the 3rd horizontal rolling groove is 934mm.
4. H rolling of sectional iron equipment according to claim 1 is characterized in that,
The specification of described H shaped steel is HN800mm * 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598002 CN202893802U (en) | 2012-11-13 | 2012-11-13 | H-section steel rolling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598002 CN202893802U (en) | 2012-11-13 | 2012-11-13 | H-section steel rolling equipment |
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| CN202893802U true CN202893802U (en) | 2013-04-24 |
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| CN 201220598002 Expired - Fee Related CN202893802U (en) | 2012-11-13 | 2012-11-13 | H-section steel rolling equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921722A (en) * | 2012-11-13 | 2013-02-13 | 莱芜钢铁集团有限公司 | H-shaped steel rolling equipment and method |
-
2012
- 2012-11-13 CN CN 201220598002 patent/CN202893802U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921722A (en) * | 2012-11-13 | 2013-02-13 | 莱芜钢铁集团有限公司 | H-shaped steel rolling equipment and method |
| CN102921722B (en) * | 2012-11-13 | 2015-07-01 | 莱芜钢铁集团有限公司 | H-shaped steel rolling equipment and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151113 |
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| EXPY | Termination of patent right or utility model |