CN113421484A - Adjusting mechanism of steel rail semi-universal metal flow demonstration mould - Google Patents
Adjusting mechanism of steel rail semi-universal metal flow demonstration mould Download PDFInfo
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- CN113421484A CN113421484A CN202110564964.9A CN202110564964A CN113421484A CN 113421484 A CN113421484 A CN 113421484A CN 202110564964 A CN202110564964 A CN 202110564964A CN 113421484 A CN113421484 A CN 113421484A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 239000002184 metal Substances 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000003825 pressing Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 abstract description 43
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention relates to the field of steel rail rolling experimental equipment, in particular to an adjusting mechanism of a steel rail semi-universal metal flow demonstration die, which can visually analyze a metal flow rule so as to optimize hole pattern design and production. The technical scheme adopted by the invention for solving the technical problems is as follows: the adjusting mechanism of the steel rail semi-universal metal flow demonstration mold comprises a module frame body, paired press plates and an adjusting module, wherein the adjusting module is composed of an upper module, a lower module and a left module, the upper module, the lower module and the left module are respectively arranged on the side wall surface of the module frame body in a sliding mode, the sliding direction of the adjusting module is sliding along the horizontal plane, the upper module, the lower module and the left module jointly form a roll gap inside the module frame body, and the roll gap is arranged between the paired press plates and forms a demonstration cavity with the press plates. The invention is particularly suitable for the field of semi-universal rolling pass design of steel rails.
Description
Technical Field
The invention relates to the field of steel rail rolling experimental equipment, in particular to an adjusting mechanism of a steel rail semi-universal metal flow demonstration die.
Background
In the production of domestic and foreign steel rails, continuous casting billets are rolled by a three-stand universal rolling mill, 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 processes are completed, and finally, the finish rolling process is completed on a third three-roll universal rolling mill. The third three-roll universal rolling mill performs semi-universal rolling, the semi-universal hole pattern of the third three-roll universal rolling mill comprises an upper horizontal roll, a lower horizontal roll and a rail bottom vertical roll, the rolling mill mainly adopts a pair of upper and lower horizontal rolls to process a rail web and a rail head, and the rail bottom vertical roll rolls roll and form the bottom thickness as shown in figure 1. However, the research on the metal flow rule in the steel rail rolling process in the steel rail universal rolling process is less at present, and no intuitive model research experimental device exists. The adjusting mechanism of the steel rail semi-universal metal flow demonstration die adopts a 1:1 physical simulation model, can reappear the rolling adjusting process, can visually display the metal flow mechanism, the metal flow volume and the flow direction in the steel rail rolling process, and has important practical significance for optimizing hole pattern design and guiding production for grasping the metal elongation and the metal flow volume, predicting the rolled steel rail shape and controlling the section size.
Disclosure of Invention
The invention aims to solve the technical problem of providing an adjusting mechanism of a steel rail semi-universal metal flow demonstration die, which can visually analyze the metal flow rule so as to optimize the hole pattern design and production.
The technical scheme adopted by the invention for solving the technical problems is as follows: the adjusting mechanism of the steel rail semi-universal metal flow demonstration mold comprises a module frame body, paired press plates and an adjusting module, wherein the adjusting module is composed of an upper module, a lower module and a left module, the upper module, the lower module and the left module are respectively arranged on the side wall surface of the module frame body in a sliding mode, the sliding direction of the adjusting module is sliding along the horizontal plane, the upper module, the lower module and the left module jointly form a roll gap inside the module frame body, and the roll gap is arranged between the paired press plates and forms a demonstration cavity with the press plates.
Further, the upper module comprises an upper module roller pressing head and an upper module driving rod connected with the upper module roller pressing head.
Further, the upper module roller press head is connected with the upper module driving rod through a rotating pin.
Further, go up the module and include the module dipperstick, go up the module dipperstick and set up on the side wall face of module framework.
Furthermore, the lower module comprises a lower module pressure head and a lower module driving rod connected with the lower module pressure head.
Furthermore, two sides of the lower module are arranged on the side wall surface of the module frame body through lower module sliding grooves, wherein the extending direction of the lower module sliding grooves is perpendicular to the extending direction of the lower module driving rod.
Further, the lower module comprises a lower module measuring scale, and the lower module measuring scale is arranged on the side wall surface of the module frame body.
Further, the left module comprises a left module pressure head and a left module driving rod connected with the left module pressure head, and further comprises a left module measuring scale, and the left module measuring scale is arranged on the side wall surface of the module frame body.
Further, the pressing plate is a semi-universal pressing plate.
The invention has the beneficial effects that: 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, and then displacement parameters of the upper module, the lower module and the left module are finely adjusted in the experimental process, so that extrusion rolling simulation of the materials is realized, and the 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. The invention is particularly suitable for the field of semi-universal rolling pass design of steel rails.
Drawings
FIG. 1 is a schematic view of the corresponding structure of a semi-universal 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.
Fig. 5 is a schematic view of the upper module of the present invention.
Fig. 6 is a schematic diagram of the upper module of the present invention.
Fig. 7 is a schematic view of the lower module of the present invention.
Fig. 8 is a schematic view of the left module of the present invention.
Fig. 9 is a schematic view of the right foot of the present invention.
Labeled as: the upper module 1, the upper module measuring scale 101, the upper module driving rod 102, the upper module roller pressure head 103, the rotating pin 104, the upper horizontal roller 11, the rail head vertical roller 12, the lower horizontal roller 13, the rail bottom vertical roller 14, the right base 2, the lower module 3, the lower module measuring scale 301, the lower module driving rod 302, the lower module pressure head 303, the lower module chute 304, the left module 4, the left module measuring scale 401, the left module driving rod 402, the left module pressure head 403, the roll gap 5, the rail bottom 51, the rail waist 52, the rail head 53, the pressing plate 6, the mounting seat 7, the module frame 8 and the upper module inclination deviation angle a.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The adjusting mechanism of the steel rail semi-universal metal flow demonstration mold shown in fig. 2 to 9 comprises a horizontally arranged module frame body 8, a pair of pressing plates 13 and an adjusting module consisting of an upper module 1, a lower module 3 and a left module 4, wherein the upper module 1, the lower module 3 and the left module 4 are respectively arranged on the side wall surfaces of the module frame body 8 in a sliding mode, the adjusting module slides along the horizontal plane, the upper module, the lower module and the left module 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 13 and forms a demonstration chamber with the pressing plates 13.
With the progress of rolling technology, the characteristics of heavy load, high speed and long fixed length become a new trend of railway development, and then the demand of high-precision steel rails is higher and higher. The metal flowing mode of the steel rail in the rolling process has important influence on the precision of the steel rail, such as influencing the section size of the steel rail, the rolling precision, eliminating rolling defects, adjusting the rolling process, designing a hole pattern and the like; however, the research on the metal flow rule in the steel rail rolling process in the steel rail universal rolling process is less at present, and no intuitive model research experimental device exists. The adjusting mechanism of the steel rail semi-universal metal flow demonstration die can reproduce a rolling adjusting process by adopting a 1:1 physical simulation model, can visually display a metal flow mechanism, a metal flow volume and a flow direction in the steel rail rolling process, has important practical functions of optimizing hole pattern design and guiding production for grasping the metal elongation and the metal flow volume, predicting the rolled steel rail shape and controlling the section size, and has important guiding significance for the steel rail semi-universal rolling production process.
The practical use of the invention is as follows: 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, then horizontally moving the left module 4 to enable the roll edge of the left module 4 to be in contact with the upper module 1 and the lower module 3, 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 template of the steel rail at the rolling center line position, moving the upper module, the lower module and the left module, and enabling the upper module, the lower module and the left module to be respectively contacted with the rail web 52, the rail bottom 51 or the rail head 53 corresponding to the standard template of the steel rail, so as to determine the size of the roll gap of the semi-universal rolling of the steel rail; c. after the size of the roll gap is determined, recording is finished, and then the upper module, the lower module and the left 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 chamber formed by the upper module, the lower module, the left module and the semi-universal pressing plates 6 on the two sides of the modules; f. and (4) finely adjusting the upper module, the lower module and the left module, and observing and recording the flow rule of the model material when the model material is extruded by the modules. Therefore, the flowing characteristics of the material in the rolling process are obtained, and the subsequent design is effectively guided.
As shown in fig. 1, the upper module 1 of the present invention functions as an upper horizontal roller 11 of the existing equipment, and the lower module 3 functions as a lower horizontal roller 13 of the existing equipment, so as to adjust the profile and size of the rail web 52. The left module 4 functions as the foot stand rollers 14 in existing equipment to adjust the profile and shape of the foot 51. The two sides of the three modules are provided with the pressing plates 6, so that the pressing plates and the three modules form an extrusion chamber together, and the model material is arranged in the extrusion chamber and is 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.
As for the upper module 1, it is generally preferable that the upper module 1 includes an upper module roll pressure head 103 and an upper module driving lever 102 connected to the upper module roll pressure head 103. As shown in fig. 1, the upper module driving rod 102 drives the upper module roller pressing head 103 to move horizontally, so as to adjust the position of the upper module roller pressing head 103, to simulate the extrusion of the model material, and to obtain the corresponding observation of the material flow direction, as shown in fig. 2, the moving range of the upper module roller pressing head 103 is generally 0-100 mm. In order to satisfy the requirement that the upper module roller press head 103 can satisfy a certain rotation angle, and thereby ensure the contour of the inner side of the rail bottom 51 and the contour of the inner side of the rail head 53, the following structure is preferable: the upper module roller presser 103 is connected to the upper module drive lever 102 via a pivot pin 104. The upper module roll ram 103 may be rotated at an angle offset from the upper module drive rod 102 to achieve a corresponding viewing effect, preferably in the range of-10-10. In order to obtain the distance moved by the upper module 1, the upper module 1 preferably includes an upper module measuring scale 101, and the upper module measuring scale 101 is provided on a side wall surface of the module frame 8. As shown in fig. 6, the upper module measuring ruler 101 can accurately and conveniently allow an operator to obtain the movement amount of the upper module roller pressing head 103, thereby providing a structural basis for accurate observation. The length range measured by a general measuring ruler is 20-100 mm.
Based on the principle of similar conception of the above scheme, the following scheme is preferred: preferably, the lower module 3 includes a lower module ram 303 and a lower module actuation rod 302 connected to the lower module ram 303. Preferably, the lower module 3 includes a lower module measuring scale 301, and the lower module measuring scale 301 is disposed on a side wall surface of the module frame 8. In addition, in order to achieve the ability of the lower module ram 303 to also move in a direction perpendicular to the lower module drive rod 302, it is preferable to: the two sides of the lower module 3 are disposed on the side wall surface of the module frame 8 through lower module sliding grooves 304, wherein the extending direction of the lower module sliding grooves 304 is perpendicular to the extending direction of the lower module driving rods 302. This arrangement allows the lower module ram 303 to move not only vertically as shown in FIG. 2, but also horizontally as shown in FIG. 2. As shown in FIG. 2, the lower module 3 generally has a moving range of 0-100mm for each of the upper and lower parts and a moving range of 0-50mm for each of the left and right parts. The length range measured by a general measuring ruler is 20-100 mm.
Based on the principle of similar conception of the above scheme, the following scheme is preferred: preferably, the left module 4 includes a left module pressing head 403 and a left module driving rod 402 connected to the left module pressing head 403, and further includes a left module measuring ruler 401, and the left module measuring ruler 401 is disposed on a side wall surface of the module frame 8. The length range measured by a general measuring ruler is 20-100mm, and as shown in fig. 2, the range of the left module 4 moving towards the left and right direction is 0-50 mm.
Examples
The 60kg/m steel rail is taken as an embodiment, rubber is selected as a material used in the embodiment, and the adjustment process of the 60kg/m steel rail in the semi-universal rolling process is simulated.
Firstly, calibrating a model roll gap: the upper module and the lower module are moved to enable the roller edges of the upper module and the lower module to be close to each other and contact with each other, the downward stroke of the upper module moves by 10mm, the upward stroke of the lower module moves by 10mm, and the roller edges are in a parallel state after being contacted with each other, are not inclined and are kept still. Then, the left module is moved to move the left module by 10mm to the right stroke, so that the roller edge of the left module is contacted with the upper module and the lower module without inclination. The upper, lower and left modules are kept in non-inclined contact, and a rolling center line is determined. 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, the downward stroke of the lower module moves by 20mm, and the left stroke of the left module moves by 20 mm.
Adjusting the roll gap of the semi-universal metal flow plane demonstration model: and (3) clamping the standard sample plate of the 60kg/m steel rail at the rolling center line position, moving the upper and lower left modules to be in contact with the rail web, the rail head and the rail bottom of the standard sample plate of the 60kg/m steel rail, and determining the roll gap size of the semi-universal rolling of the 60kg/m steel rail.
And thirdly, after the size of the roll gap is determined, opening the upper, lower, left module and the right base 2 to the maximum stroke position, namely opening the roll gap to the maximum.
Fourthly, calculating the volume of the required model material according to the size of the standard sample plate of the 60kg/m steel rail.
And fifthly, preparing the model material with the corresponding volume according to the volume of the model material required by calculation, wherein the model material is selected to be rubber.
Sixthly, placing the prepared rubber material into the center line position of roll gap rolling.
And seventhly, moving the upper module and the lower module simultaneously to enable the upper module and the lower module to be in contact with the rubber material simultaneously. And moving the upper, lower, left and right modules to the position of the rolling gap of the 60kg/m steel rail according to the size of the rolling gap of the 60kg/m steel rail.
Eighthly, respectively and finely adjusting the upper module, the lower module and the left module according to the profile shape and the size of the section of the 60kg/m steel rail, inclining the upper module by 3 degrees to the right around the axis center of the upper module, and adjusting the upper module by 5mm towards the direction of the model material.
And ninthly, observing, recording and adjusting the displacement and the flowing rule of the rubber material in the roll gap.
The invention can establish an accurate metal flow volume prediction model, visually analyze the metal flow rule of the steel rail in the semi-universal rolling process, formulate a reasonable rolling regulation, and 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 rolling process of the steel rail as much as possible, and has obvious technical advantages and wide market popularization prospect.
Claims (9)
1. The adjusting mechanism of the steel rail semi-universal metal flow demonstration die is characterized in that: including the module framework (8) that the level set up, mated clamp plate (6) and by last module (1), lower module (3) and left module (4) the adjusting module who constitutes, but go up module (1), lower module (3) and left module (4) slidable respectively set up on the lateral wall face of module framework (8), the gliding direction of adjusting module is for sliding along the horizontal plane, wherein, upper and lower, left module constitute roll gap (5) jointly in module framework (8) inside, roll gap (5) set up between mated clamp plate (6) and constitute the demonstration cavity with clamp plate (6).
2. The adjusting mechanism of the semi-universal steel rail metal flow demonstration mold according to claim 1, characterized in that: the upper module (1) comprises an upper module roller pressing head (103) and an upper module driving rod (102) connected with the upper module roller pressing head (103).
3. The adjusting mechanism of the steel rail semi-universal metal flow demonstration mold according to claim 2, characterized in that: the upper module roller press head (103) is connected with the upper module driving rod (102) through a rotating pin (104).
4. The adjusting mechanism of the semi-universal metal flow demonstration mould for steel rails as claimed in claim 1, 2 or 3, wherein: go up module (1) including last module dipperstick (101), go up module dipperstick (101) and set up on the side wall face of module framework (8).
5. The adjusting mechanism of the semi-universal steel rail metal flow demonstration mold according to claim 1, characterized in that: the lower module (3) comprises a lower module pressure head (303) and a lower module driving rod (302) connected with the lower module pressure head (303).
6. The adjusting mechanism of the semi-universal steel rail metal flow demonstration mold according to claim 5, characterized in that: the two sides of the lower module (3) are arranged on the side wall surface of the module frame body (8) through lower module sliding grooves (304), wherein the extending direction of the lower module sliding grooves (304) is perpendicular to the extending direction of the lower module driving rod (302).
7. The adjusting mechanism of the semi-universal metal flow demonstration mould for steel rails as claimed in claim 1, 5 or 6, wherein: the lower module (3) comprises a lower module measuring scale (301), and the lower module measuring scale (301) is arranged on the side wall surface of the module frame body (8).
8. The adjusting mechanism of the semi-universal steel rail metal flow demonstration mold according to claim 1, characterized in that: the left module (4) comprises a left module pressure head (403) and a left module driving rod (402) connected with the left module pressure head (403), and further comprises a left module measuring scale (401), wherein the left module measuring scale (401) is arranged on the side wall surface of the module frame body (8).
9. The adjusting mechanism of the semi-universal metal flow demonstration mold for steel rails of claim 1, 2, 3, 5, 6 or 8, wherein: the pressing plate (6) is a semi-universal pressing plate.
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| CN202110564964.9A CN113421484B (en) | 2021-05-24 | 2021-05-24 | Adjusting mechanism of steel rail semi-universal metal flow demonstration mould |
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| CN202110564964.9A CN113421484B (en) | 2021-05-24 | 2021-05-24 | Adjusting mechanism of steel rail semi-universal metal flow demonstration mould |
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| CN113421484B CN113421484B (en) | 2023-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012018A (en) * | 2021-11-04 | 2022-02-08 | 中国铁建重工集团股份有限公司道岔分公司 | Steel rail mold adjusting device and method |
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| Title |
|---|
| 姜银方,杨继昌,陈炜: "铝拼焊板在车身覆盖件冲压成形中的应用研究" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012018A (en) * | 2021-11-04 | 2022-02-08 | 中国铁建重工集团股份有限公司道岔分公司 | Steel rail mold adjusting device and method |
| CN114012018B (en) * | 2021-11-04 | 2023-12-12 | 中国铁建重工集团股份有限公司道岔分公司 | Rail die adjusting device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113421484B (en) | 2023-10-24 |
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Effective date of registration: 20231122 Address after: 617000 xiangyangyi village, East District, Panzhihua City, Sichuan Province Patentee after: PANGANG GROUP PANZHIHUA STEEL & VANADIUM Co.,Ltd. Patentee after: PANGANG GROUP ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 617000 Panzhihua Steel Vanadium Co., Ltd., Panzhihua Steel Group, Xiangyang Yicun, East District, Panzhihua City, Sichuan Province Patentee before: PANGANG GROUP PANZHIHUA STEEL & VANADIUM Co.,Ltd. |