CN113362693B - Demonstration control method for metal flow plane of steel rail edging mill - Google Patents
Demonstration control method for metal flow plane of steel rail edging mill Download PDFInfo
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- CN113362693B CN113362693B CN202110566202.2A CN202110566202A CN113362693B CN 113362693 B CN113362693 B CN 113362693B CN 202110566202 A CN202110566202 A CN 202110566202A CN 113362693 B CN113362693 B CN 113362693B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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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
- B21B1/085—Rail sections
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Abstract
The invention relates to the field of steel rail rolling experimental equipment, in particular to a metal flow plane demonstration control method of a steel rail edging mill, which comprises the following steps: a. calibrating a model roll gap; b. adjusting a roll gap; c. after the size of the roll gap is determined, recording is finished, and then the upper module and the lower module are opened; d. preparing a model material with corresponding volume and outline; e. placing the prepared model material into the center line position of roll gap rolling; f. and (4) finely adjusting the upper module and the lower module, and observing and recording the flowing rule of the model material when the model material is extruded by the modules. By the demonstration control method for the metal flow plane in the steel rail edging rolling process, an accurate metal flow volume prediction model can be established, the metal flow rule of the steel rail in the universal rolling process can be intuitively analyzed, and the demonstration control method has very important significance for further improving the performance and the quality of the finished steel rail in the guidance of hole pattern design and actual production. The invention is particularly suitable for the field of design of the rolled hole shape of the steel rail edging machine.
Description
Technical Field
The invention relates to the field of steel rail rolling experimental equipment, in particular to a demonstration control method for a metal flow plane of a steel rail edging mill.
Background
At present, a three-stand universal rolling mill is commonly used for rolling continuous casting billets in the production of steel rails at home and abroad, reversible rolling is firstly carried out on two stands of a four-roll universal rolling mill and a two-roll edging mill, the universal rough rolling and edging process is completed, and finally, the finish rolling process is completed on a third three-roll universal rolling mill. The edger has two passes which control the head width and the foot width, i.e. the part which is open in the UR stand. The first pass is used during first and second passes of rolling, and after the two passes of rolling, the edger moves transversely and is positioned to the second pass so as to roll for the third pass. The edger is important for the symmetry of the bottom and the size of the leg tips. As shown in fig. 1. The leg tips and the head sides are processed in the rolling process of the steel rail edging machine, the processing capacity of the steel rail edging machine on the steel rail is realized by controlling the bottom width and the symmetrical specification and size, the waist part is very small rolling reduction or 0 rolling reduction, and the expansion of the rail waist is not influenced by the elongation and the expansion of the rail head and the rail bottom. The rail bottom and the rail head are rolled in the middle of the horizontal roller, and the width of the rail bottom and the rail head is limited by the hole pattern. Therefore, the metal flow in the steel rail rolling process is accurately controlled, so that the rolling process of the edger can be smoothly carried out, the steel rail can be ensured to be within the normal lateral bending requirement, the residual stress is reduced, and the good performance of the steel rail after rolling is ensured. On the other hand, the metal flow regime is influenced by the rolling parameters. The sizes and the sizes of the rail head and the rail bottom of the steel rail are different, the rolling reduction of the rail head and the rail bottom is different in the rolling process, so that the longitudinal flow speed and the transverse flow speed and the flow direction of metal on the rail head and the rail bottom are different, and it is necessary to explore the metal flow rule of each part (the rail head, the rail bottom and the rail waist) of the steel rail under different rolling reduction through a corresponding physical simulation model.
Disclosure of Invention
The invention aims to solve the technical problem of providing a steel rail edging mill metal flow plane demonstration control method which can establish an accurate metal flow volume prediction model so as to effectively guide the hole pattern design and further improve the performance and the quality of a finished steel rail in actual production.
The technical scheme adopted by the invention for solving the technical problems is as follows: the demonstration control method for the metal flow plane of the steel rail edging mill comprises the following steps: a. calibrating a model roll gap: moving the upper module and the lower module in opposite directions to enable the roll edges of the upper module and the lower module to be close to each other and to be in a parallel state, so that a rolling central line is determined, and opening a roll gap after the rolling central line is determined; b. adjusting a roll gap: clamping the standard sample plate of the steel rail at the rolling center line position, moving the upper module and the lower module, and enabling the upper module and the lower module to be respectively contacted with the rail web, the rail bottom or the rail head corresponding to the standard sample plate of the steel rail, and determining the roll gap size of the edging rolling of the steel rail; c. after the size of the roll gap is determined, recording is finished, and then the upper module and the lower module are opened; d. calculating the volume and outline specification of the required model material according to the size of the standard sample plate, and preparing the model material with corresponding volume and outline according to the calculated volume of the required model material; e. placing the prepared model material into a roll gap rolling center line position, namely an extrusion cavity formed by the upper and lower modules and the steel rail edging press plates on the two sides of the modules; f. and (4) finely adjusting the upper module and the lower module, and observing and recording the flowing rule of the model material when the model material is extruded by the modules.
Further, in the step d, the material of the model material is space sand.
Further, in the step b, the rail web of the standard template of the steel rail is horizontally arranged.
Further, in the step b, the rail web of the standard template of the steel rail is horizontally arranged.
Further, in the step b, the rail bottom and the rail head of the standard template of the steel rail are vertically arranged.
Furthermore, the vertical moving range of the upper module is 0-100 mm.
Further, the upper module is inclined and deviated in a rotating range of-10 to 10 degrees around the center of the roller of the upper module.
Furthermore, the vertical moving range of the lower module is 0-100 mm.
Furthermore, the horizontal moving range of the lower module is 0-100 mm.
The invention has the beneficial effects that: by the demonstration control method for the metal flow plane of the steel rail edging rolling, an accurate metal flow volume prediction model can be established, the metal flow rule of the steel rail in the universal rolling process can be visually analyzed, a reasonable rolling regulation is formulated, the influence of the metal flow among the rail head, the rail bottom and the rail web on the size precision of the section of the rolled steel rail and the bending degree of the steel rail in the steel rail rolling process is reduced as much as possible, and the demonstration control method has very important significance for further improving the performance and the quality of the finished steel rail in the guidance hole pattern design and the actual production. The invention is particularly suitable for the field of design of the rolled hole shape of the steel rail edging machine.
Drawings
FIG. 1 is a schematic view of an edger rolled steel rail.
Fig. 2 is a schematic structural diagram of the present invention.
Figure 3 is a schematic view of the platens on both sides of the module of the present invention.
Fig. 4 is a schematic view of the present invention installed in a mounting base.
Labeled as: the steel rail edging method comprises the following steps of steel rail edging modules 1, upper horizontal rollers 11, lower horizontal rollers 13, a right mounting base 2, a steel rail edging lower module 3, a left mounting bottom 4, a roller gap 5, a rail bottom 51, a rail waist 52, a rail head 53, a first hole type 501, a second hole type 502, a pressing plate 6, a mounting base 7, a module frame body 8 and an upper module inclined deviation angle a.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The method for demonstrating and controlling the metal flow plane of the steel rail edger shown in fig. 1, 2, 3 and 4 comprises the following steps: a. calibrating a model roll gap: moving the upper module 1 and the lower module 3 in opposite directions to enable the roll edges of the upper module 1 and the lower module 3 to be close to each other and to be in a parallel state, so as to determine a rolling central line, and opening a roll gap 5 after the rolling central line is determined; b. adjusting a roll gap: clamping a standard template of the steel rail at the rolling center line position, moving an upper module and a lower module, and enabling the upper module and the lower module to be respectively contacted with a rail web 52, a rail bottom 51 or a rail head 53 corresponding to the standard template of the steel rail, so as to determine the size of a roll gap for rolling the steel rail edge; c. after the size of the roll gap is determined, recording is finished, and then the upper module and the lower module are opened; d. calculating the volume and outline specification of the required model material according to the size of the standard sample plate, and preparing the model material with corresponding volume and outline according to the calculated volume of the required model material; e. placing the prepared model material into a roll gap rolling center line position, namely an extrusion cavity formed by the upper and lower modules and the steel rail edging press plates 6 at two sides of the modules; f. and (4) finely adjusting the upper module and the lower module, and observing and recording the flowing rule of the model material when the model material is extruded by the modules.
The adjusting mechanism of the metal flow demonstration die of the steel rail edging machine shown in fig. 2 to 4 comprises a module frame body 8 which is horizontally arranged, a pair of pressing plates 6 and an adjusting module which is composed of a steel rail edging module 1 and a steel rail edging module 3, wherein the steel rail edging module 1 and the steel rail edging module 3 are respectively arranged on two opposite side wall surfaces of the module frame body 8 in a sliding manner, the adjusting module slides along the horizontal plane, the steel rail edging module 1 and the steel rail edging module 3 jointly form a roll gap 5 inside the module frame body 8, and the roll gap 5 is arranged between the pair of pressing plates 6 and forms a demonstration chamber with the pressing plates 6. In practical use, materials with flow performance close to that of the steel rail materials, such as space sand or rubber materials, are filled in the roll gaps 5, and then displacement parameters of the steel rail edge rolling upper module 1 and the steel rail edge rolling lower module 3 are adjusted in a fine mode in the experimental process, so that extrusion rolling simulation of the materials is achieved, and accordingly volume change of metal flow in practical rolling is simulated. The invention can visually analyze the metal flow rule, has flexible and adjustable parameters, does not need to replace the whole experimental device after each observation is finished, and has low cost. The metal flow change rule of the steel rail under the action of the pressure in the rolling process is deduced by observing the flow change rule of the filling material, and the method has important practical significance for optimizing hole pattern design and guiding production for predicting the shape of the rolled steel rail and controlling the section size. As shown in fig. 1, the rail edging module 1 of the present invention functions as an upper horizontal roll 11 in the existing equipment, and the rail edging module 3 functions as a lower horizontal roll 13 in the existing equipment, so as to adjust the profile and size of the rail web 52. The modules together form an extrusion chamber, the mould material is arranged in the extrusion chamber, and the mould material is ensured to be always positioned in a limited space range when receiving pressure. For the convenience of observation, it is generally preferable that the platen 6 is made of a transparent material.
In actual operation, because steps of calibrating a rolling center line, adjusting a roll gap, installing a standard template, simulating rolling and the like are required, in order to adjust and achieve the convenience of extrusion in use, a certain adjusting range of a corresponding module needs to be ensured, and the vertical moving range of the upper module 1 is generally preferably 0-100 mm. In addition, the rotation range of the inclined deviation of the upper module 1 around the center of the roller of the upper module 1 is preferably-10-10 degrees, so that the upper module 1 has the linear and angle adjusting capability and stronger adaptability. The ability of the upper module 1 to tilt is also the guarantee of the profile of the inner side of the rail base 51 and the profile of the inner side of the rail head 53, namely, the upper module 1 is formed by tilting and deviating a certain angle around the center of the roller of the upper module 1. Based on the same concept, the vertical movement range of the lower module 3 is preferably 0-100mm, and the horizontal movement range of the lower module 3 is preferably 0-100mm, so that the lower module 3 has the adjustment capability in the vertical and horizontal directions.
Examples
In the embodiment, a 60kg/m steel rail is taken as an embodiment, rubber is selected as a material used in the embodiment, and a metal flowing process of the 60kg/m steel rail in a steel rail edging rolling process is simulated.
Step a, calibrating a model roll gap: and (3) moving the upper module 1 and the lower module 3 in opposite directions, wherein the downward stroke of the upper module 1 moves by 10mm, and the upward stroke of the lower module 3 moves by 10mm, so that the roller edges of the upper module 1 and the lower module 3 are close to each other and are tightly attached to each other, and the roller edges are in a parallel state after being contacted with each other, are not inclined and are kept still, thereby determining a rolling center line and ensuring that the modules are not inclined. After the rolling center line is determined, the roll gap is slowly opened to the maximum, namely the upward stroke of the upper module moves by 20mm, and the downward stroke of the lower module moves by 20 mm.
Step b, adjusting a roll gap: adjusting the roll gap of a steel rail edging metal flow plane demonstration model: and clamping the standard sample plate of the 60kg/m steel rail at the rolling center line position, moving the upper module and the lower module, and enabling the upper module and the lower module to be respectively contacted with the rail web, the rail head and the rail bottom of the corresponding standard sample plate of the 60kg/m steel rail, so as to determine the roll gap size of the edge rolling of the 60kg/m steel rail.
And c, after the size of the roll gap is determined, recording is finished, and the upper module and the lower module are opened to the maximum stroke position, namely the roll gap is opened to the maximum.
And d, calculating the volume and the outline specification of the required model material according to the size of the standard sample plate of the 60kg/m steel rail, and preparing the model material with the corresponding volume and outline according to the calculated volume of the required model material.
And e, putting the prepared model material into a roll gap rolling center line position, namely an extrusion chamber formed by the upper and lower modules and the pressing plates 6 at the two sides of the modules.
And f, simultaneously adjusting the upper die block and the lower die block to be in contact with the model material, and observing and recording the flowing rule of the model material in the roll gap 5 when the model material is extruded by the die blocks.
And h, respectively and finely adjusting the upper module 1 and the lower module 3 and inclining the upper module 1 to the right by 2 degrees around the axis center of the upper module according to the shape and the size of the section profile of the 60kg/m steel rail, and then observing and recording the flow rule of the rubber material in each step of adjustment process.
The invention can establish an accurate metal flow volume prediction model, visually analyze the metal flow rule of the steel rail in the steel rail edging rolling process, formulate a reasonable rolling regulation, reduce the influence of the metal flow among the rail head, the rail bottom and the rail web on the size precision of the rolled section of the steel rail and the bending degree of the steel rail in the steel rail rolling process as much as possible, has obvious technical advantages and has wide market popularization prospect.
Claims (8)
1. The demonstration control method for the metal flow plane of the steel rail edging mill is characterized by comprising the following steps of:
a. calibrating a model roll gap: moving the upper module (1) and the lower module (3) in opposite directions to enable the roll edges of the upper module (1) and the lower module (3) to be close to each other and to be in a parallel state, so that a rolling central line is determined, and opening a roll gap (5) after the rolling central line is determined;
b. adjusting a roll gap: clamping the standard sample plate of the steel rail at the rolling center line position, moving the upper module and the lower module, and enabling the upper module and the lower module to be respectively contacted with the rail web (52), the rail bottom (51) or the rail head (53) corresponding to the standard sample plate of the steel rail, so as to determine the roll gap size of the steel rail in the all-purpose rolling process;
c. after the size of the roll gap is determined, recording is finished, and then the upper module and the lower module are opened;
d. calculating the volume and the outline specification of the required model material according to the size of the standard sample plate, and preparing the model material with corresponding volume and outline according to the calculated volume of the required model material, wherein the model material is a material with the flow property close to that of the steel rail material;
e. placing the prepared model material into a roll gap rolling center line position, namely an extrusion chamber formed by the upper and lower modules and the pressing plates (6) at the two sides of the modules;
f. and (4) finely adjusting the upper module and the lower module, and observing and recording the flowing rule of the model material when the model material is extruded by the modules.
2. The demonstration control method for the metal flow plane of the steel rail edging mill according to claim 1, characterized in that: in the step d, the material of the model material is space sand.
3. The demonstration control method for the metal flow plane of the steel rail edging mill according to claim 1, characterized in that: in the step b, the rail web (52) of the standard sample plate of the steel rail is horizontally arranged.
4. A rail edger metal flow plane demonstration control method according to claim 1, 2 or 3, characterised in that: in the step b, the rail bottom (51) and the rail head (53) of the standard template of the steel rail are vertically arranged.
5. A rail edger metal flow plane demonstration control method according to claim 1, 2 or 3, characterised in that: the vertical moving range of the upper module (1) is 0-100 mm.
6. A rail edger metal flow plane demonstration control method according to claim 1, 2 or 3, characterised in that: the upper module (1) is inclined and deviated in a rotating range of minus 10 degrees to 10 degrees around the center of a rolling shaft of the upper module (1).
7. A rail edger metal flow plane demonstration control method according to claim 1, 2 or 3, characterised in that: the vertical moving range of the lower module (3) is 0-100 mm.
8. A rail edger metal flow plane demonstration control method according to claim 1, 2 or 3, characterised in that: the moving range of the lower module (3) in the horizontal direction is 0-100 mm.
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1477314A (en) * | 1973-09-07 | 1977-06-22 | British Steel Corp | Rolling mill test equipment |
| CN1200311A (en) * | 1997-05-23 | 1998-12-02 | 阿尔卡塔尔-阿尔斯托姆通用电气公司 | Device for operating multi-set of rolling mill |
| US6526328B1 (en) * | 1998-09-21 | 2003-02-25 | Vai Clecim | Process for rolling a metal product |
| KR20110046631A (en) * | 2009-10-29 | 2011-05-06 | 현대제철 주식회사 | A simulator for rolling of shape steel |
| CN202278016U (en) * | 2011-09-21 | 2012-06-20 | 天津市中重科技工程有限公司 | Guide at inlet or outlet of universal mill |
| CN102589979A (en) * | 2012-01-18 | 2012-07-18 | 清华大学 | Simulation experiment method for extrusion welding performance of aluminium alloy |
| CN102632077A (en) * | 2012-05-04 | 2012-08-15 | 中冶赛迪工程技术股份有限公司 | Full pre-stress high-rigidity universal mill |
| CN102784801A (en) * | 2011-05-18 | 2012-11-21 | 攀钢集团有限公司 | Method for regulating steel tapping torsion of special-shaped steel in rolling |
| CN202539184U (en) * | 2012-01-31 | 2012-11-21 | 宝山钢铁股份有限公司 | Annular-hole-type roller device for dual-roller-type seamless steel pipe cold rolling mill |
| CN202621558U (en) * | 2012-07-06 | 2012-12-26 | 攀钢集团攀枝花钢钒有限公司 | Roller and universal mill |
| CN103357804A (en) * | 2012-04-01 | 2013-10-23 | 华中科技大学 | Damping type flow control forming process and die for aluminium-alloy rib-plate forging |
| CN104217063A (en) * | 2014-07-22 | 2014-12-17 | 攀钢集团攀枝花钢钒有限公司 | Simulation design method for rolling hole patterns of steel rail |
| CN204128909U (en) * | 2014-10-29 | 2015-01-28 | 哈尔滨理工大学 | Magnesium alloy hot extrusion physical simulating device |
| CN104690088A (en) * | 2013-12-05 | 2015-06-10 | 北京有色金属研究总院 | Simulation experiment method of rolling technology |
| CN105930594A (en) * | 2016-04-26 | 2016-09-07 | 东北大学 | Method for predicting dog bone shape of rolled piece after vertical rolling |
| CN106424132A (en) * | 2016-10-27 | 2017-02-22 | 天津市中重科技工程有限公司 | Prestress universal rolling mill for H structural steel production |
| CN107832535A (en) * | 2017-11-16 | 2018-03-23 | 东北大学 | A kind of method of cut deal flat shape intelligent predicting |
-
2021
- 2021-05-24 CN CN202110566202.2A patent/CN113362693B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1477314A (en) * | 1973-09-07 | 1977-06-22 | British Steel Corp | Rolling mill test equipment |
| CN1200311A (en) * | 1997-05-23 | 1998-12-02 | 阿尔卡塔尔-阿尔斯托姆通用电气公司 | Device for operating multi-set of rolling mill |
| US6526328B1 (en) * | 1998-09-21 | 2003-02-25 | Vai Clecim | Process for rolling a metal product |
| KR20110046631A (en) * | 2009-10-29 | 2011-05-06 | 현대제철 주식회사 | A simulator for rolling of shape steel |
| CN102784801A (en) * | 2011-05-18 | 2012-11-21 | 攀钢集团有限公司 | Method for regulating steel tapping torsion of special-shaped steel in rolling |
| CN202278016U (en) * | 2011-09-21 | 2012-06-20 | 天津市中重科技工程有限公司 | Guide at inlet or outlet of universal mill |
| CN102589979A (en) * | 2012-01-18 | 2012-07-18 | 清华大学 | Simulation experiment method for extrusion welding performance of aluminium alloy |
| CN202539184U (en) * | 2012-01-31 | 2012-11-21 | 宝山钢铁股份有限公司 | Annular-hole-type roller device for dual-roller-type seamless steel pipe cold rolling mill |
| CN103357804A (en) * | 2012-04-01 | 2013-10-23 | 华中科技大学 | Damping type flow control forming process and die for aluminium-alloy rib-plate forging |
| CN102632077A (en) * | 2012-05-04 | 2012-08-15 | 中冶赛迪工程技术股份有限公司 | Full pre-stress high-rigidity universal mill |
| CN202621558U (en) * | 2012-07-06 | 2012-12-26 | 攀钢集团攀枝花钢钒有限公司 | Roller and universal mill |
| CN104690088A (en) * | 2013-12-05 | 2015-06-10 | 北京有色金属研究总院 | Simulation experiment method of rolling technology |
| CN104217063A (en) * | 2014-07-22 | 2014-12-17 | 攀钢集团攀枝花钢钒有限公司 | Simulation design method for rolling hole patterns of steel rail |
| CN204128909U (en) * | 2014-10-29 | 2015-01-28 | 哈尔滨理工大学 | Magnesium alloy hot extrusion physical simulating device |
| CN105930594A (en) * | 2016-04-26 | 2016-09-07 | 东北大学 | Method for predicting dog bone shape of rolled piece after vertical rolling |
| CN106424132A (en) * | 2016-10-27 | 2017-02-22 | 天津市中重科技工程有限公司 | Prestress universal rolling mill for H structural steel production |
| CN107832535A (en) * | 2017-11-16 | 2018-03-23 | 东北大学 | A kind of method of cut deal flat shape intelligent predicting |
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