CN204122464U - The slideway of cold pilger mill - Google Patents

The slideway of cold pilger mill Download PDF

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Publication number
CN204122464U
CN204122464U CN201420497825.4U CN201420497825U CN204122464U CN 204122464 U CN204122464 U CN 204122464U CN 201420497825 U CN201420497825 U CN 201420497825U CN 204122464 U CN204122464 U CN 204122464U
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CN
China
Prior art keywords
inclined plane
plane part
slideway
sidewall
calendering
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420497825.4U
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Chinese (zh)
Inventor
谭起兵
张秀芳
于晗
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TIANJIN METALLURGICAL VOCATION-TECHNOLOGY INSTITUTE
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TIANJIN METALLURGICAL VOCATION-TECHNOLOGY INSTITUTE
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Priority to CN201420497825.4U priority Critical patent/CN204122464U/en
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Publication of CN204122464U publication Critical patent/CN204122464U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model proposes a kind of production cost low, the slideway of the cold pilger mill that end product quality is high, it has the bottom of strip, two ends on the width of bottom are formed with the identical sidewall of the shape that extends on the length direction of bottom respectively, be formed in bottom for the through hole with head sleeve connection, the chute of slideway is formed by bottom and sidewall, the upper end of sidewall is used for back-up roll, the upper surface of the upper end of sidewall is formed as curved surface, curved surface comprises first inclined plane part that to tilt to the direction contrary with bottom side from one end of sidewall, the planar portions of the level be connected with the first inclined plane part, the second inclined plane part tilted towards bottom side be connected with planar portions, the ratio of the length of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of the first inclined plane part is more than or equal to 0.04 and is less than or equal to 0.055.

Description

The slideway of cold pilger mill
Technical field
The utility model relates to a kind of slideway, particularly relates to a kind of slideway of cold pilger mill.
Background technology
Cold pilger mill is the process equipment often used in seamless steel tube production.One of component parts of cold pilger mill is slideway, and in the technology of such production seamless steel pipe, ramp design is the important step of Rolling production, all has a great impact end product quality, rolling rate, device security, production cost etc.
When steel pipe rolling, roll carries out pure rolling on pipe, roll rolls on slideway, the supporting surface carrying out rolling for back-up roll of slideway is generally curved surface, the pass by the roll that slideway supports is formed is made to change from small to big from large to small thus again, carry out one-shot change, thus in pass process from large to small, pipe has been rolled, then after calendering repeatedly, be formed into QC.
In the prior art, the gradient of slideway is larger, thus it is large to the calendering amount of pipe when once rolling, this can make steel pipe in the operation of rolling, produce a large amount of heats, and cause the temperature of lubricant to raise, lubricant can produce decomposition, when can cause rolling, lubrication weakens, and the service time of lubricant can be reduced, need continuous supplemental lubrication agent or need the cooling device for cooling lubricant, which adds production cost.On the other hand, because one-pass roller deflection is comparatively large, also can be that toughness and the surface quality of steel pipe reduces.
Utility model content
The purpose of this utility model is the slideway proposing the cold pilger mill that a kind of production cost is low, end product quality is high for the technological deficiency existed in prior art.
Following technical scheme is adopted for realizing the purpose of this utility model.
The slideway of the cold pilger mill of technical scheme 1, there is the bottom of strip, two ends on the width of described bottom are formed with the identical sidewall of the shape that extends on the length direction of described bottom respectively, be formed in described bottom for the through hole with head sleeve connection, the chute of described slideway is formed by described bottom and described sidewall, the upper end of described sidewall is used for back-up roll, the upper surface of the upper end of described sidewall is formed as curved surface, described curved surface comprises first inclined plane part that to tilt to the direction contrary with bottom side from one end of described sidewall, the planar portions of the level be connected with described first inclined plane part, the second inclined plane part tilted towards described bottom side be connected with described planar portions, the ratio of the length of the difference in height of described first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is more than or equal to 0.04 and is less than or equal to 0.055.
The slideway of the cold pilger mill of technical scheme 2, in the slideway of the cold pilger mill of technical scheme 1, the ratio of the length of the preferably difference in height of described first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is 0.05.
Compared with prior art, the utility model has following beneficial effect.
According to the slideway of the cold pilger mill of technical scheme 1, slideway forms by the first inclined plane part, planar portions and the second inclined plane part the shape that centre is protruded and two ends are outward-dipping, like this roll from as upstream end the first inclined plane part to planar portions roll time, calendering is carried out to be formed into QC to pipe.And the lenth ratio of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is in the scope of 0.04 ~ 0.055 i.e. 5:126 ~ 7:126.By designing the gradient of slideway like this, do not make it excessive, the calendering amount of calendering action once can be made suitable, suppress in the operation of rolling, produce a large amount of heats, can avoid occurring that the temperature of lubricant is too high, the phenomenon be decomposed, thus the service time that can extend lubricant, avoid continuous supplemental lubrication agent, save production cost.In addition, one-pass roller deflection also can not be made comparatively large, thus ensure toughness and the surface quality of steel pipe.
In addition, when slope of ways is too small, the calendering amount of each calendering is little, like this in order to reach the size of production tube, need repeated multiple times calendering, thus the time of the operation of the steel pipe that manufactures a finished product is long, and production efficiency reduces.In the utility model, by above-mentioned design, the gradient of slideway also can not be made too small, relatively ensure that the calendering amount of each calendering, calendering number of times time till making the size of arrival production tube is moderate, does not make productivity ratio reduce.
In addition, in this application, by the lenth ratio of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part 0.04 ~ 0.055 that is between 5:126 ~ 7:126.After deliberation, the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part lenth ratio 5:126 that is less than 0.04 time, each calendering amount is too small, add calendering number of times, due to increased frequency, so the efficiency of producing a production tube declines at least 20%.In addition, the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part lenth ratio 7:126 that is more than 0.055 time, the calendering amount of each calendering is large, produces a large amount of heats, be easy to occur that the temperature of lubricant is too high in the operation of rolling, the phenomenon be decomposed, and steel pipe there will be impression, there will be crackle time more serious, yield rate obviously reduces, toughness also obviously reduces in addition, can reduce about 10% ~ 15%.
According to the slideway of the cold pilger mill of technical scheme 2, when the ratio of the length of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of the first inclined plane part be 0.05 that is 6.5:126, the finished product that surface quality is qualified, toughness is enough can either be produced, and calendering least number of times, thus productivity ratio is the highest.But the ratio of the length of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of the first inclined plane part is not limited to 0.05 i.e. 6.5:126, can be 5.5:126 (0.43), 6:126 (0.047) etc., in these cases, also while boosting productivity, the requirement of the surface quality to the tubing that rolling is formed can be met.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the slideway of the cold pilger mill representing embodiment of the present utility model.
Fig. 2 be the slideway of the cold pilger mill representing embodiment of the present utility model with the schematic diagram of the assembly relation of roll.
Detailed description of the invention
Below, based on accompanying drawing, the slideway as cold pilger mill of the present utility model is described.
Fig. 1 is the cross-sectional schematic of the slideway of the cold pilger mill representing embodiment of the present utility model.Fig. 2 be the slideway of the cold pilger mill representing embodiment of the present utility model with the schematic diagram of the assembly relation of roll.
As shown in Figure 1 and Figure 2, the slideway of cold pilger mill of the present utility model has the bottom 1 of strip, two ends on the width of bottom 1 are formed with the identical sidewall 2 of the shape that extends on the length direction of bottom 1 respectively, being formed with the through hole 3 for being connected with head sleeve (not shown) in bottom 1, being formed the chute of slideway by bottom 1 and sidewall 2.
The upper end of sidewall 2 is used for back-up roll 4, the upper surface of the upper end of sidewall 2 is formed as curved surface, curved surface comprise first inclined plane part 20 that to tilt to the direction contrary with bottom side from one end of sidewall 2, the planar portions 21 of level be connected with the first inclined plane part 20, the height difference H of the second inclined plane part 22, first inclined plane part 20 in the short transverse of described bottom tilted towards bottom side be connected with planar portions 21 and the projection in the first inclined plane part 20 horizontal direction the ratio of length L be more than or equal to 0.04 and be less than or equal to 0.055.
More particularly, slideway is formed as channel-shaped, the upper surface of two sidewalls of the openend of groove is used for supporting and guide roll, the upper surface of each sidewall forms by the first inclined plane part, planar portions and the second inclined plane part the shape that centre is protruded and two ends are outward-dipping respectively, like this roll from as upstream end the first inclined plane part to planar portions roll time, calendering is carried out to be formed into QC to pipe.And the lenth ratio of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is 0.04 ~ 0.055 that is between 5:126 ~ 7:126.
By such slideway, in reciprocating one-period, the pass that roll carries out rolling on slideway, three rolls are formed specify the one-shot change of " large-little-greatly " by ramp curve.When pass is maximum, roll does not contact with pipe, now pipe rotates the angle (angle of revolution) of a regulation, and the size (feed) specified by feed mechanism forward impelling one, after this, pass progressively diminishes, and time minimum to pass, completes the setting of production tube wall thickness, inside/outside diameter size.Such cycle constantly completes, and achieves the calendering to pipe.
By designing the gradient of slideway like this, do not make it excessive, the calendering amount of calendering action once can be made suitable, suppress in the operation of rolling, produce a large amount of heats, can avoid occurring that the temperature of lubricant is too high, the phenomenon be decomposed, thus the service time that can extend lubricant, avoid continuous supplemental lubrication agent, save production cost.In addition, one-pass roller deflection also can not be made comparatively large, thus ensure toughness and the surface quality of steel pipe.Under the condition of identical rolling, the homogeneous deformation degree of steel pipe is better.
In addition, when slope of ways is too small, the calendering amount of each calendering is little, like this in order to reach the size of production tube, need repeated multiple times calendering, thus the time of the operation of the steel pipe that manufactures a finished product is long, and production efficiency reduces.In the utility model, by above-mentioned design, the gradient of slideway also can not be made too small, relatively ensure that the calendering amount of each calendering, calendering number of times time till making the size of arrival production tube is moderate, does not make productivity ratio reduce.
In addition, in this application, by the lenth ratio of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part 0.04 ~ 0.055 that is between 5:126 ~ 7:126.After deliberation, the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part lenth ratio 5:126 that is less than 0.04 time, each calendering amount is too small, add calendering number of times, due to increased frequency, so the efficiency of producing a production tube declines 20%.In addition, the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part lenth ratio 7:126 that is more than 0.055 time, the calendering amount of each calendering is large, produces a large amount of heats, be easy to occur that the temperature of lubricant is too high in the operation of rolling, the phenomenon be decomposed, and steel pipe there will be impression, there will be crackle time more serious, yield rate obviously reduces, toughness also obviously reduces in addition, can reduce about 10% ~ 15%.
In addition, the ratio of the length of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of the first inclined plane part can be 0.05.Now can either produce the finished product that surface quality is qualified, toughness is enough, and calendering least number of times, thus productivity ratio is the highest.But the ratio of the length of the difference in height of the first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of the first inclined plane part is not limited to 0.05 i.e. 6.5:126, can be 5.5:126 (0.43), 6:126 (0.047) etc., in these cases, also while boosting productivity, the requirement of the surface quality to the tubing that rolling is formed can be met.
Above the slideway of the cold pilger mill of preferred embodiment of the present utility model is illustrated, but the utility model is not limited to above-mentioned concrete embodiment, only otherwise depart from the scope of claim, can various distortion or change be carried out.The utility model comprises various distortion within the scope of the claims and change.

Claims (2)

1. the slideway of a cold pilger mill, there is the bottom of strip, two ends on the width of described bottom are formed with the identical sidewall of the shape that extends on the length direction of described bottom respectively, be formed in described bottom for the through hole with head sleeve connection, the chute of described slideway is formed by described bottom and described sidewall, it is characterized in that
The upper end of described sidewall is used for back-up roll, the upper surface of the upper end of described sidewall is formed as curved surface, planar portions, second inclined plane part tilted towards described bottom side that is connected with described planar portions of level that described curved surface comprises first inclined plane part that to tilt to the direction contrary with bottom side from one end of described sidewall, is connected with described first inclined plane part
The ratio of the length of the difference in height of described first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is more than or equal to 0.04 and is less than or equal to 0.055.
2. the slideway of cold pilger mill according to claim 1, is characterized in that, the ratio of the length of the difference in height of described first inclined plane part in the short transverse of described bottom and the projection in the horizontal direction of described first inclined plane part is 0.05.
CN201420497825.4U 2014-09-01 2014-09-01 The slideway of cold pilger mill Expired - Fee Related CN204122464U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420497825.4U CN204122464U (en) 2014-09-01 2014-09-01 The slideway of cold pilger mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420497825.4U CN204122464U (en) 2014-09-01 2014-09-01 The slideway of cold pilger mill

Publications (1)

Publication Number Publication Date
CN204122464U true CN204122464U (en) 2015-01-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420497825.4U Expired - Fee Related CN204122464U (en) 2014-09-01 2014-09-01 The slideway of cold pilger mill

Country Status (1)

Country Link
CN (1) CN204122464U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150128

Termination date: 20150901

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