CN103962483A - Method and device for vertically rolling train wheels and asynchronously reinforcing deformation of train wheels - Google Patents
Method and device for vertically rolling train wheels and asynchronously reinforcing deformation of train wheels Download PDFInfo
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- CN103962483A CN103962483A CN201410168887.5A CN201410168887A CN103962483A CN 103962483 A CN103962483 A CN 103962483A CN 201410168887 A CN201410168887 A CN 201410168887A CN 103962483 A CN103962483 A CN 103962483A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 title abstract 2
- 239000002184 metal Substances 0.000 claims abstract description 17
- 230000009286 beneficial effect Effects 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 7
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- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract 2
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- 239000013078 crystal Substances 0.000 description 7
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- 238000010438 heat treatment Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses a method and device for vertically rolling train wheels and asynchronously reinforcing deformation of train wheels, and belongs to the technical field of ring roll forming. Based on the existing wheel vertical rolling technology, the height of a main roller is adjusted online in the rolling process, a main deformation area is subjected to rolling roller staggered rolling, misalignment quantity is adjusted to control the flow of rim metal, the asynchronous rolling deformation effect of the main deformation area is reinforced, the deep penetration performance of rim deformation is improved, and the grain size of the center of a rim is refined. The height of the main roller is adjusted online in the mode that a hydraulic cylinder pushes a main roller bearing seat to move in the height direction. By means of the method and device, wheel roll forming efficiency can be improved according to needs, the deep penetration performance of rim deformation is obviously improved, a peripheral metal flow line can be conveniently formed, and mechanical property of the wheels is improved.
Description
Technical field
The invention belongs to ring parts rolling forming field, be specifically related to a kind of train wheel vertical rolling method and realize the device of the method.
Technical background
Wheel rolling is a hot formed crucial work step of rolling over steel solid wheel.In wheel rolling process, the disc of wheel base extends, wheel rim external diameter expands, and wheel rim and wheel rim are shaped gradually.In prior art, the main tool of the vertical rolling of wheel comprises 1 home roll, 2 disc rollers, 2 edger rolls, 2 centring rolls and 2 deflector rolls.When rolling, left and right disc roller drives wheel blank rotation, disc roller invariant position, and home roll is to the feeding of wheel base direction, and disc roller drives, the passive rotation of home roll.Wheel rim metal continuous repeated deformation in two contact in rollings, respectively: the main deformed area that (1) left and right disc roller and home roll form, to wheel rim and wheel rim progressive molding the disc that extends, expansion wheel diameter; The edging deformed areas that (2) two edger rolls form, to wheel rim axial compression and control rim width.The design feature of wheel and rolling mode determined wheel rolling distortion continuously, multi-pass, asymmetric, small deformation feature.In the vertical rolling of wheel at present, there is following subject matter:
The first, the distortion of wheel rolling process lacks control device flexibly and effectively.The wheel rolling initial stage should make wheel rim be full of as early as possible shaping, and especially wheel rim part " misrun " located to be beneficial to metal flow to wheel rim by regulation and control in time, improves wheel rim forming efficiency.Rolling mid-term, main task is wheel rim hole enlargement, now should control the axial absolute spread of wheel rim of main deformed area, creates and is conducive to the condition of wheel rim metal to circumferential extension, and wheel rim hole enlargement efficiency is improved.Rolling latter stage, home roll feed-disabling, main task be to wheel rim tread and side along circumferentially carrying out " finishing ", reduce wheel rim along circumferential thickness difference and stand out.Visible, the distortion task difference in each stage of wheel rolling, in deformed area, the accurate control of metal flow plays vital effect to the raising of the each stage forming efficiency of rolling.Be mainly by the feed speed of controlled rolling process home roll at present, the flow distribution of flow of metal is difficult to flexible control.
The second, wheel rim rolls state tissue and has obvious mixed crystal problem.Because the distortion of the nearly surf zone of wheel rim in wheel rolling process is compared with large and the distortion of heart portion is less, cause the nearly surf zone crystal grain of wheel rim compared with thin and heart portion coarse grains rolls rear rim section and presents mixed crystal to a certain degree.The performance of the wheel fracture toughness of wheel rim mixed crystal phenomenon after to heat treatment is extremely unfavorable.Under existing wheel rolling technology, in order to meet the requirement of fracture toughness of high-speed wheel, have to take secondary heat treatment technique (increasing a normalizing) to realize.This technique not only extends the production cycle of wheel product, also significantly increases energy consumption.Therefore, improving wheel rim and roll state Tissue distribution uniformity, for follow-up Technology for Heating Processing provides the good state tissue that rolls, is that one of major issue that will solve is out of shape in current wheel rolling.The not deep and thorough of wheel rolling process rim deformation is the major reason that causes wheel rim mixed crystal problem, and that eliminate wheel rim section rolls state mixed crystal phenomenon, must make to be out of shape deep and thorough to wheel rim heart portion.
Summary of the invention
The present invention is directed to the problem and shortage in existing wheel rolling distortion, provide the vertical rolling of a kind of wheel asynchronous enhanced deformation method and apparatus, to to wheel rolling deformation process Reasonable Regulation And Control, and increase the detrusion degree of wheel rim heart portion, improve the equivalent deformation of wheel rim heart portion.
In order to solve above technical problem, the present invention is achieved by the following technical programs.
The invention provides the method for the asynchronous enhanced deformation of the vertical rolling of a kind of train wheel, home roll height when it passes through to adjust wheel rolling, make the rolling that misplaces of the home roll of both sides, main deformed area and disc roller, strengthen the deep and thorough property of rim deformation and be shaped and need to control the flow distribution of deformed area metal in all directions according to wheel, concrete steps are:
A, rolling initial stage, raise the position of home roll, and the side pressure of increase home roll enters the ratio of amount, is beneficial to wheel rim and fills type;
B, rolling mid-term, the position of home roll is reduced, increase the side pressure of disc roller and enter the ratio of amount, be beneficial to wheel rim hole enlargement and disc and extend;
C, rolling later stage, home roll height homing is rolled wheel rim thickness to given size and carried out smooth to wheel rim side.
The present invention provides a kind of device of realizing the asynchronous enhanced deformation method of the vertical rolling of above-mentioned train wheel simultaneously, comprise frame, home roll, slide rail, balladeur train, home roll height adjustment mechanism and home roll feeding hydrocylinder, described slide rail is arranged in frame, described balladeur train is arranged on slide rail, described home roll height adjustment mechanism comprises home roll bearing block and home roll height regulator solution cylinder pressure, by the height of the adjustable home roll of home roll height regulator solution cylinder pressure, described home roll height adjusting structure is fixedly connected with balladeur train, described home roll feeding hydrocylinder promotes balladeur train and home roll height adjustment mechanism is realized the feeding of home roll and retreats.
The principles of science of the present invention:
In the vertical operation of rolling of wheel, determine under condition at the passage amount of feeding (wheel often revolves the drafts of the wheel rim thickness direction that turns around), the ratio (inside and outside be pressed into ratio) that the disc roll-in in main deformed area enters amount and the home roll amount of being pressed into directly affects the distribution of wheel rim metal in the mobile distribution of all directions and distortion.The ratio that the side pressure of increase disc roller enters amount is conducive to disc extension; Increasing ratio that home roll side pressure enters amount is conducive to wheel rim and fills type.Therefore the amount of being pressed into proportionate relationship inside and outside wheel rolling different phase should rationally be controlled main deformed area.For achieving the above object, the present invention adjusts home roll axis height while proposing by rolling, and disc roller height is constant, home roll and the disc roller of both sides, main deformed area are misplaced, change the contact condition of roll, the ratio of the amount of being pressed into inside and outside deformed area is changed, and then control deformed area metal in the mobile distribution of all directions, and strengthen asymmetrical rolling deformation effect in main deformed area, improve the deep and thorough property of distortion.
Compared with the vertical rolling technique of existing wheel, the present invention has following technique effect:
1, by adjusting home roll height, inside and outside the different phase of rolling changes main deformed area as required, the ratio of the amount of being pressed into, controls metal flow flexibly, improves forming efficiency.
2, make roll dislocation by adjusting home roll height, increase main deformed area asymmetrical rolling effect, enhanced deformation makes the distortion of wheel rim heart portion more deep and thorough, is beneficial to the crystallite dimension refinement of wheel rim heart portion, improves wheel rim and rolls state mixed crystal phenomenon.In addition, roll dislocation is beneficial to the circumferential flow of wheel rim metal, contributes to form circumferential metal streamline, improves the mechanical property of wheel.
3, wheel rolling mid-term, home roll axis height moves down, and prevents wheel-slip (disc roller is driven roller) thereby increase disc roller side contacts arc can improve bite condition, correspondingly can suitably increase the feed speed of home roll, shorten rolling time, improve production capacity.
Brief description of the drawings
Fig. 1 moves schematic diagram on home roll height.
Fig. 2 is the partial enlarged drawing of main deformed area in Fig. 1.
Fig. 3 is that home roll height moves down schematic diagram.
Fig. 4 is the partial enlarged drawing of main deformed area in Fig. 3.
Fig. 5 is general structure schematic diagram of the present invention.
Fig. 6 is the affect tendency chart of home roll height adjustment on the distortion of wheel rim heart portion.
Fig. 7 is the affect tendency chart of home roll height adjustment on wheel rim rolling hole enlargement.
In figure: 1, frame; 2, home roll; 3, wheel base; 4, disc roller; 5, edger roll; 6, upper centring roll; 7, lower centring roll; 8, slide rail; 9, balladeur train; 10, home roll bearing block; 11, home roll bearing; 12, home roll height adjustment mechanism; 13, home roll height regulator solution cylinder pressure; 14, home roll feeding hydrocylinder; A, home roll are pressed into increase part; B, home roll are pressed into minimizing part.
Detailed description of the invention
Below in conjunction with accompanying drawing, innovative point of the present invention and the principles of science are further described.
As shown in Figure 5, apparatus of the present invention comprise frame 1, home roll 2, slide rail 8, balladeur train 9, home roll bearing 11 and home roll feeding hydrocylinder 14, and described slide rail 8 is arranged in frame 1, and described balladeur train 9 is arranged on slide rail 8; On conventional wheel vertical mill, increased a home roll height adjustment mechanism 12, home roll height adjustment mechanism 12 comprises home roll bearing block 10 and home roll height regulator solution cylinder pressure 13; By the height of home roll height regulator solution cylinder pressure 13 adjustable home rolls 2, home roll height adjustment mechanism 12 is fixedly connected with balladeur train 9, and home roll feeding hydrocylinder 14 promotes balladeur train 9 and home roll height adjustment mechanism 12 is realized the feeding of home roll 2 and retreats.
Fill type efficiency in the rolling starting stage for improving wheel rim, on home roll 2 height, move (shown in Fig. 1), now the line in home roll 2 axle center and disc roller 4 axle center is upwards offset, disc roller 4 reduces and home roll 2 contact arcs increases with wheel rim contact arc, correspondingly inside and outside main deformed area, be pressed into than reducing, home roll side pressure enters amount proportion increases (in Fig. 2, region a is depicted as home roll and is pressed into increase part), is beneficial to wheel rim outer layer metal and fills wheel rim.Rolling mid-term, home roll 2 is highly moved down to (shown in Fig. 3), now the line in home roll 2 axle center and disc roller 4 axle center offsets downward, the contact arc of disc roller 4 increase and home roll 2 contact arcs reduce (in Fig. 4 region b be depicted as home roll be pressed into reduce part), correspondingly inside and outside main deformed area, be pressed into than increase, the amount of the being pressed into proportion that is disc roller 4 increases, and is conducive to wheel rim hole enlargement and disc and extends.In the rolling later stage, when home roll 2 feed-disabling, home roll 2 axis height adjustment, to being rolled with disc roller 4 axis equal heights, are rolled to given size by wheel rim thickness, and wheel rim thickness direction and width are carried out to finishing.
Below in conjunction with accompanying drawing, the invention will be further described with concrete wheel rolling process.But the present invention is not limited to following specific embodiment.
Wheel base 3 after die forging, sends into wheel vertical mill by manipulator.After wheel base 3 and each roll are in place, disc roller 4 drives wheel base 3 to rotate, and the frictional force between wheel base 3 and home roll 2 drives home roll 2 to rotate.Home roll 2 is realized feeding under the promotion of home roll feeding hydrocylinder 14, under the spreading effect of home roll 2 and disc roller 4, wheel rim, wheel rim progressive molding are also realized wheel rim hole enlargement, and in the operation of rolling, home roll 2 and disc roller 4 compress wheel rim thickness, and edger roll 5 is depressed or controlled rim width.The rolling starting stage, according to the initial full level of wheel base 3 wheel rims and shaping needs, by home roll height regulator solution cylinder pressure 13, will on home roll 2 height, move, as shown in Figure 1, increase the proportion of the home roll 2 side metal amounts of being pressed into, be beneficial near the metal of wheel rim and fill type.On home roll 2 amount of moving according to wheel rim owe full level determine, charge less is completely more serious, on home roll 2, the amount of moving is larger.After wheel rim is full of home roll die cavity, the main task wheel rim hole enlargement of distortion.Now by hydraulic cylinder 13, the height of home roll 2 is lowered, as shown in Figure 3, home roll 2 height downward amounts need to set according to rolling deformation, and downward amount is larger, is more conducive to wheel rim hole enlargement, also more can increase wheel rim heart portion deflection.The rolling later stage slowly arrives home roll 2 axis height adjustment consistent with disc roller 4 axis height, makes wheel rim thickness reach requirement, and carries out smooth to wheel rim side under the effect of edger roll 5.
The adjusting range of home roll axis height is-50～50mm.In the operation of rolling, according to the increase situation of wheel rim outside dimension, upper centring roll 6 and lower centring roll 7 are controlled, made wheel axis height consistent with disc roll axis height, and ensure the stability of wheel rolling.
Be configured as example with CCD890 wheel rolling, the wheel rim heart portion distortion of sunykatuib analysis home roll height change on wheel rolling initial stage and mid-term and the impact of rolling hole enlargement amount.As seen from Figure 6, the roll asynchronous distortion of this strengthening that misplaces significantly improves the deformation extent of wheel rim heart portion, and especially home roll misplaces downwards.If consider, rolling later stage home roll height adjusts back to normal position, makes wheel rim thickness reach target size, can also, to radially further compression of wheel rim, further significantly improve wheel rim heart portion deflection in the wheel rolling later stage.As seen from Figure 7, roll dislocation rolling has a significant effect to wheel rolling hole enlargement speed, and home roll height is adjusted and is conducive to wheel rim rolling hole enlargement downwards.
Claims (2)
1. the asynchronous enhanced deformation method of the vertical rolling of train wheel, it is characterized in that, home roll height during by adjustment wheel rolling, make the rolling that misplaces of the home roll of both sides, main deformed area and disc roller, strengthen the deep and thorough property of rim deformation and be shaped and need to control the flow distribution of deformed area metal in all directions according to wheel, concrete steps are:
A, rolling initial stage, raise the position of home roll, and the side pressure of increase home roll enters the ratio of amount, is beneficial to wheel rim and fills type;
B, rolling mid-term, the position of home roll is reduced, increase the side pressure of disc roller and enter the ratio of amount, be beneficial to wheel rim hole enlargement and disc and extend;
C, rolling later stage, home roll height homing is rolled wheel rim thickness to given size and carried out smooth to wheel rim side.
2. realize the device of the asynchronous enhanced deformation method of the vertical rolling of train wheel described in claim 1 for one kind, comprise frame (1), home roll (2), slide rail (8), balladeur train (9), home roll bearing (11) and home roll feeding hydrocylinder (14), described slide rail (8) is arranged in frame (1), described balladeur train (9) is arranged on slide rail (8), it is characterized in that, this device also comprises a home roll height adjustment mechanism (12), described home roll height adjustment mechanism (12) comprises home roll bearing block (10) and home roll height regulator solution cylinder pressure (13), by the height of the adjustable home roll of home roll height regulator solution cylinder pressure (13) (2), described home roll height adjusting structure (12) is fixedly connected with balladeur train (9), described home roll feeding hydrocylinder (14) promotes balladeur train (9) and home roll height adjustment mechanism (12) is realized the feeding of home roll (2) and retreats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168887.5A CN103962483B (en) | 2014-04-24 | 2014-04-24 | A kind of asynchronous enhanced deformation method of the vertical rolling of train wheel and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410168887.5A CN103962483B (en) | 2014-04-24 | 2014-04-24 | A kind of asynchronous enhanced deformation method of the vertical rolling of train wheel and device |
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| CN103962483A true CN103962483A (en) | 2014-08-06 |
| CN103962483B CN103962483B (en) | 2015-08-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625624A (en) * | 2014-12-17 | 2015-05-20 | 马钢(集团)控股有限公司 | Manufacturing method and device for double-rim walking wheel |
| CN109894551A (en) * | 2019-04-18 | 2019-06-18 | 安徽工业大学 | A method of disc is drawn thin in the mitigation vertical rolling of wheel |
| CN111604447A (en) * | 2020-04-28 | 2020-09-01 | 宝武集团马钢轨交材料科技有限公司 | Method for improving rim corner forming and width uniformity in wheel rolling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE893488C (en) * | 1942-03-06 | 1953-10-15 | Schloemann Ag | Wheel disk mill |
| JPH03238133A (en) * | 1990-02-14 | 1991-10-23 | Sumitomo Metal Ind Ltd | Production of wheel for railway vehicles |
| WO1999003167A1 (en) * | 1997-07-09 | 1999-01-21 | Allgon Ab | Hand-portable telephone with radiation absorbing device |
| CN2421101Y (en) * | 1999-10-21 | 2001-02-28 | 江绍成 | Multi-point radial roll |
| WO2010097648A1 (en) * | 2009-02-25 | 2010-09-02 | Wladimir Anatoliewitsch Sokolov | Device and method for local fixing of wheelsets of rail vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU978991A1 (en) * | 1981-05-26 | 1982-12-07 | Институт черной металлургии | Railway wheel rolling method |
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2014
- 2014-04-24 CN CN201410168887.5A patent/CN103962483B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE893488C (en) * | 1942-03-06 | 1953-10-15 | Schloemann Ag | Wheel disk mill |
| JPH03238133A (en) * | 1990-02-14 | 1991-10-23 | Sumitomo Metal Ind Ltd | Production of wheel for railway vehicles |
| WO1999003167A1 (en) * | 1997-07-09 | 1999-01-21 | Allgon Ab | Hand-portable telephone with radiation absorbing device |
| CN2421101Y (en) * | 1999-10-21 | 2001-02-28 | 江绍成 | Multi-point radial roll |
| WO2010097648A1 (en) * | 2009-02-25 | 2010-09-02 | Wladimir Anatoliewitsch Sokolov | Device and method for local fixing of wheelsets of rail vehicles |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625624A (en) * | 2014-12-17 | 2015-05-20 | 马钢(集团)控股有限公司 | Manufacturing method and device for double-rim walking wheel |
| CN109894551A (en) * | 2019-04-18 | 2019-06-18 | 安徽工业大学 | A method of disc is drawn thin in the mitigation vertical rolling of wheel |
| CN111604447A (en) * | 2020-04-28 | 2020-09-01 | 宝武集团马钢轨交材料科技有限公司 | Method for improving rim corner forming and width uniformity in wheel rolling |
| CN111604447B (en) * | 2020-04-28 | 2022-04-19 | 宝武集团马钢轨交材料科技有限公司 | Method for improving rim corner forming and width uniformity in wheel rolling |
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