CN101722189A - Large-scale cold rolling seamless steel mill and rolling method thereof - Google Patents
Large-scale cold rolling seamless steel mill and rolling method thereof Download PDFInfo
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- CN101722189A CN101722189A CN200810232059.8A CN200810232059A CN101722189A CN 101722189 A CN101722189 A CN 101722189A CN 200810232059 A CN200810232059 A CN 200810232059A CN 101722189 A CN101722189 A CN 101722189A
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Abstract
The invention relates to a large-scale cold rolling (seamless steel) mill which is characterized in that two high-speed and low-friction hydraulic cylinders (14) are fixed on a base (15)and directly drive a thick wall sleeve tube (3) to reciprocate uniformly and straightly so as to move a work frame to slide reciprocatedly on a rail (18) arranged on the base (15). The balance between the friction generated to the base (15) by the work frame and the reaction force generated on the base (15) by the high-speed and low-friction hydraulic cylinders (14) is achieved by the base (15). The invention can use the hot skew rolled or centrifugal cast seamless steel to produce high precision large cold rolled seamless steel tube with the diameter of 559 to 920 mm, and the wall thickness of 15 to 60 mm.
Description
Technical field:
The present invention relates to a kind of metallurgical equipment and method, particularly a kind of large-scale cold rolling (seamless steel) pipe machine and milling method.
Background technology:
The multiple roll cold pilger mill adopts the rolling dimensional accuracy and the surface smoothness that improves pipe of light reduction multi-pass.The domestic following milling train of diameter 300mm of having made, maximum in the world at present diameter is 500mm, wall thickness has been gone into operation in Russia less than the cold pilger mill of 30mm, but, mechanical interlocking system complex huge because of transmission mechanism, whole as the II500 milling train from weighing 1456 tons, make manufacturing, adjustment, safeguard all very difficult, so be difficult to develop to large-scale direction again.
Traditional cold pilger mill as shown in Figure 1, it all adopts direct current generator 10 to drive toggle 5 without exception, the work housing that drives milling train moves back and forth rolling with sinusoidal pace of change, the multi-high cold-rolling pipe mill work housing comprises thick-walled sleeve 3, be fixed on bearing guide 4, roll stand frame 1 that plaing on the thick-walled sleeve radially depress the roll effect and a plurality of rolls 2 that are contained in the interior radial arrangement of roll stand frame etc.; It is reciprocating that main transmission drives work housing by toggle 5, because big connecting rod links to each other with rocking bar 6 and thick-walled sleeve 3, small rod links to each other with rocking bar 6 and roll stand frame 1, so roll stand frame and roll are also reciprocating when thick-walled sleeve moves back and forth, and have relative motion with thick-walled sleeve, adopt the fly wheel system stored energy to reduce power of motor simultaneously.
In addition, traditional roll jacking mechanism spring 11 as shown in Figure 3 all the time with roll 2 with depress bearing guide 4 and be close to; But along with the increasing of pipe 9 diameters, the carrying roller power of φ 920 tube mills has reached more than 30 ton, will arrange quite difficulty of so powerful spring in the crack of multiple roll.
Summary of the invention
The purpose of this invention is to provide a kind of hot helical rolling perforation or centrifugally cast seamless steel tube blank production diameter of can utilizing and be φ 559～φ 920mm, wall thickness is the high precision large-sized cold rolling seamless steel of 15～60mm, and the milling method of realizing high precision large-sized cold rolling seamless steel is provided.
The object of the present invention is achieved like this, the milling method of large-scale cold rolling seamless steel machine comprises thick-walled sleeve at least, is fixed on bearing guide, the roll stand frame that plaing on the thick-walled sleeve radially depress the roll effect and is contained in a plurality of rolls of the radial arrangement in the roll stand frame; Big connecting rod links to each other with rocking bar and thick-walled sleeve, small rod links to each other with rocking bar and roll stand frame, it is characterized in that: two the low friction of high speed hydraulic cylinders are fixed on the support, low at a high speed friction hydraulic cylinder directly drives thick-walled sleeve and does at the uniform velocity straight reciprocating motion, the frame that pushes the work forward reciprocatingly slides on frame guide rail, and the frictional force that work housing motion produces support and low friction hydraulic cylinder at a high speed act on reaction force on the support by the support balance.
The large-scale cold rolling seamless steel machine, it is characterized in that: rocking bar links to each other with thick-walled sleeve by big connecting rod, rocking bar links to each other with roll stand frame by small rod, and two the low friction of high speed hydraulic cylinders are fixed on the support, and low at a high speed friction hydraulic cylinder is connected with thick-walled sleeve by hydraulic cylinder piston; Work housing is on the guide rail of support.
Described roll by four balance hydraulic cylinder groups with roll with depress bearing guide and be close to, and in two friction pairs, produce pure rolling friction, the frictional force that its normal pressure produces is given moment of friction of roll, driving roll turns round by self axis, with the pass on the roller pipe is radially depressed, and axially-movable is back and forth rolling; Four balance hydraulic cylinder groups are connected with accumulator.
Described high speed is hanged down friction hydraulic cylinder drive work housing and do at the uniform velocity straight reciprocating motion in the operation of rolling, one " shallow pass " section is respectively arranged, the deceleration of realization work housing in " shallow pass " section-stop-oppositely accelerated motion at rolling stroke two ends; At deceleration-stop phase, absorb impact and energy storage by the large energy accumulation device in the hydraulic system; When reverse accelerated motion, accumulator discharges energy again, the high-pressure pump of hydraulic system is supplied with highly pressurised liquid simultaneously, as the power that quickens, realize the power conversion of mechanical part high-speed motion inertia force and hydraulic system, move back and forth and the deceleration in " shallow pass " stage-stop-the oppositely rolling mill practice requirement of acceleration with the high speed that satisfies roll.
Roll stand frame and roll were also reciprocating when described thick-walled sleeve was done to move back and forth, and had relative motion with thick-walled sleeve.
Described work housing rotates to sending to pipe at the nothing machinery interlocking shaft that rolling stroke two ends " shallow pass " stroke carries out pipe.
Advantage of the present invention is: because the hydraulic cylinder of two low frictions of high speed is fixed on the support 15, low at a high speed friction hydraulic cylinder 14 directly drives thick-walled sleeve 3 and does at the uniform velocity straight reciprocating motion, at this moment its inner roll stand frame 1 and roll 2 are also reciprocating, and poor with the fixing speed of thick-walled sleeve 3 existence, this speed difference makes itself and 3 of thick-walled sleeves also have relative motion; When doing relative motion, radially be installed in a plurality of rolls 2 on the roll stand frame and be secured on the bearing guide on the thick-walled sleeve 3, by on the guide plate 4 in advance the rolling curve of design radially depress rolling to pipe 9.The roller of each roll is directly located inner ring four groups of balancing cylinder devices is set, the strength of compensating cylinder group can not only be offset the deadweight of roller system " shallow pass " stage, and it is close to depress bearing guide, make to produce enough frictional force between bearing guide and the roller footpath and guarantee that roll produces pure rolling.Because compensating cylinder group 17 is communicated with accumulator 16, makes it can satisfy the required whole radially drafts of tube rolling in bigger stroke.
Description of drawings
The present invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is traditional cold pilger mill structural representation;
Fig. 2 is the utility model example structure schematic diagram;
Fig. 3 is traditional roll jacking mechanism schematic diagram;
Fig. 4 is the roll jacking mechanism schematic diagram of Fig. 2.
Among the figure: 1, roll stand frame; 2, roll; 3, thick-walled sleeve; 4, bearing guide; 5, toggle; 6, rocking bar; 7, big connecting rod; 8, small rod; 9, pipe; 10, motor; 11, spring; 12, oil pump; 13, hydraulic cylinder piston; 14, low at a high speed friction hydraulic cylinder; 15, support; 16, accumulator; 17, four balance hydraulic cylinder groups; 18, guide rail.
The specific embodiment
Embodiment as shown in Figure 2, embodiment as shown in Figure 2, embodiment is the improvement to known device, at least comprise thick-walled sleeve 3, be fixed on bearing guide 4, the roll stand frame 1 that plaing on the thick-walled sleeve 3 radially depress the roll effect and be contained in a plurality of rolls 2 of the radial arrangement in the roll stand frame, rocking bar 6 links to each other with thick-walled sleeve 3 by big connecting rod 7, rocking bar 6 links to each other with roll stand frame 1 by small rod 8, two the low friction of high speed hydraulic cylinders 14 are fixed on the support 15, and low at a high speed friction hydraulic cylinder 14 is connected with thick-walled sleeve 3 by hydraulic cylinder piston 13; Work housing is on the guide rail 18 of support 15.
The low friction of the high speed hydraulic cylinder 14 direct thick-walled sleeves 3 that drive that are fixed on the support 15 are done at the uniform velocity straight reciprocating motion, the frame that pushes the work forward reciprocatingly slides on support 15 guide rails 18, and the frictional force that work housing motion produces support 15 and low friction hydraulic cylinder 14 at a high speed act on reaction force on the support 15 by support 15 balances.Because big connecting rod 7 links to each other with rocking bar 6 and thick-walled sleeve 3, small rod 8 links to each other with rocking bar 6 and roll stand frame 1, so when thick-walled sleeve 3 is reciprocating, its inner roll stand frame 1 and roll 2 are also reciprocating, and poor with the fixing speed of thick-walled sleeve 3 existence, this speed difference makes itself and 3 of thick-walled sleeves also have relative motion; When doing relative motion, radially be installed in a plurality of rolls 2 on the roll stand frame 1 and be secured on the bearing guide 4 on the thick-walled sleeve 3, roll 2 flexibly connects with bearing guide 4 on the thick-walled sleeve 3.Radially depress rolling by the rolling curve that designs in advance on the bearing guide 4 to pipe 9; Absorb impact and stored energy by the accumulator in the hydraulic system 16, one " shallow pass " section is respectively arranged at rolling stroke two ends, utilize " shallow pass " stage at reciprocal rolling stroke two ends to overcome the huge motional inertia of large-sized rolling mills work housing, work housing carries out the nothing machinery interlocking shaft of pipe 9 to sending and the pipe rotation deceleration of realization work housing in " shallow pass " section-stop-oppositely accelerated motion at rolling stroke two ends " shallow pass " stroke; In the reciprocal operation of rolling, make milling train slow down, stop.When reverse accelerated motion, accumulator 16 discharges energy again, the high-pressure pump of hydraulic system is supplied with highly pressurised liquid simultaneously, as the power that quickens, realize the power conversion of mechanical part high-speed motion inertia force and hydraulic system, move back and forth and the deceleration in " shallow pass " stage-stop-the oppositely rolling mill practice requirement of acceleration with the high speed that satisfies roll 2.In this process, absorb stored energies and eliminate impact shock by hydraulic cylinder piston 13 and accumulator 16, again in quickening return, release energy and oil pump 12 is finished once the back and forth operation of rolling jointly by accumulator 16.Constantly send to through pipe 9, repeating of milling train multi-pass is rolling, finishes the high precision rolling process to whole pipe at last.
On the one hand in order to make the frictional contact surface that processes rolling curve on each roll 2 and the guide plate make PURE ROLLING, make roller radially depress motion on the other hand on rolling limit, pipe 9 top, pipe 9 is rolled, depresses bearing guide so the roll 2 of roll stand frame 1 core must be close to all the time.The position that existing roll 2 all adopts spring 11 to keep roll 2, as shown in Figure 3, spring 11 all the time with roll 2 with depress bearing guide 4 and be close to; But increasing along with pipe 9 diameters, the carrying roller power of φ 920 tube mills has reached more than 30 ton, in the crack of multiple roll, to arrange quite difficulty of so powerful spring, the present invention then adopts the hydraulic pressure support roller device to solve this difficult problem, as shown in Figure 4, each roll 2 by four balance hydraulic cylinder groups 17 with roll 2 with depress bearing guide 4 and be close to, and in two sliding friction pairs, produce the normal pressure be enough to transmit pure rolling friction power, the frictional force that its normal pressure produces is given 2 one moment of frictions of roll, thereby driving roll 2 turns round by self axis, with the pass on the roller pipe 9 had both radially been depressed, carry out the back and forth rolling of axially-movable again, four balance hydraulic cylinder groups 17 are connected with accumulator 16.Carry out power conversion between compensating cylinder and the accumulator 16, to satisfy the maximum radial pressing stroke of roll 2.The roller of each roll 2 is directly located inner ring four groups of balancing cylinder devices is set, and the strength of compensating cylinder group can not only be offset the deadweight and the inertia force of roller system, it is close to depresses bearing guide 4, also makes the frictional force that produces between guide plate and the roller footpath guarantee that roll 2 produces pure rolling.The compensating cylinder group has bigger stroke to satisfy the required whole radially drafts of tube rolling.
The present invention is not limited only to the foregoing description; Owing to embodiment improves on the multi-high cold-rolling pipe mill Equipment Foundations of having sold, do not make the detailed descriptionthe part among the embodiment and belong to known equipment and general knowledge.
Claims (6)
1. the milling method of large-scale cold rolling seamless steel machine comprises thick-walled sleeve (3) at least, is fixed on bearing guide (4), roll stand frame (1) that plaing on the thick-walled sleeve (3) radially depress the roll effect and a plurality of rolls (2) that are contained in the radial arrangement in the roll stand frame; Big connecting rod (7) links to each other with rocking bar (6) and thick-walled sleeve (3), small rod (8) links to each other with rocking bar (6) and roll stand frame (1), it is characterized in that: two high speed low friction hydraulic cylinders (14) are fixed on the support (15), low friction hydraulic cylinder (14) directly drives thick-walled sleeve (3) and does at the uniform velocity straight reciprocating motion at a high speed, the frame that pushes the work forward reciprocatingly slides on support (15) guide rail (18), and the frictional force that work housing motion produces support (15) and low friction hydraulic cylinder (14) at a high speed act on reaction force on the support (15) by support (15) balance.
2. large-scale cold rolling seamless steel machine, it is characterized in that: rocking bar (6) links to each other with thick-walled sleeve (3) by big connecting rod (7), rocking bar (6) links to each other with roll stand frame (1) by small rod (8), two high speed low friction hydraulic cylinders (14) are fixed on the support (15), and low friction hydraulic cylinder (14) is connected with thick-walled sleeve (3) by hydraulic cylinder piston (13) at a high speed; Work housing is on the guide rail (18) of support (15).
3. the milling method of large-scale cold rolling seamless steel machine according to claim 1, it is characterized in that: described roll (2) by four balance hydraulic cylinder groups (17) with roll (2) with depress bearing guide (4) and be close to, and in two friction pairs, produce pure rolling friction, the frictional force that its normal pressure produces is given (2) moment of frictions of roll, driving roll (2) turns round by self axis, with the pass on the roller pipe is radially depressed, and axially-movable is back and forth rolling; Four balance hydraulic cylinder groups (17) are connected with accumulator (16).
4. the milling method of large-scale cold rolling seamless steel machine according to claim 1, it is characterized in that: described high speed low friction hydraulic cylinder (14) drives work housing and do at the uniform velocity straight reciprocating motion in the operation of rolling, one " shallow pass " section is respectively arranged, the deceleration of realization work housing in " shallow pass " section-stop-oppositely accelerated motion at rolling stroke two ends; At deceleration-stop phase, absorb impact and energy storage by the large energy accumulation device (16) in the hydraulic system; When reverse accelerated motion, accumulator (16) discharges energy again, the high-pressure pump of hydraulic system is supplied with highly pressurised liquid simultaneously, as the power that quickens, realize the power conversion of mechanical part high-speed motion inertia force and hydraulic system, move back and forth and the deceleration in " shallow pass " stage-stop-the oppositely rolling mill practice requirement of acceleration with the high speed that satisfies roll.
5. the milling method of large-scale cold rolling seamless steel machine according to claim 1 is characterized in that: roll stand frame (1) and roll (2) were also reciprocating when described thick-walled sleeve (3) was done to move back and forth, and had relative motion with thick-walled sleeve (3).
6. the milling method of large-scale cold rolling seamless steel machine according to claim 1 is characterized in that: described work housing rotates to sending to pipe at the nothing machinery interlocking shaft that rolling stroke two ends " shallow pass " stroke carries out pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232059.8A CN101722189B (en) | 2008-10-31 | 2008-10-31 | Large-scale cold rolling seamless steel mill and rolling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232059.8A CN101722189B (en) | 2008-10-31 | 2008-10-31 | Large-scale cold rolling seamless steel mill and rolling method thereof |
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| Publication Number | Publication Date |
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| CN101722189A true CN101722189A (en) | 2010-06-09 |
| CN101722189B CN101722189B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810232059.8A Expired - Fee Related CN101722189B (en) | 2008-10-31 | 2008-10-31 | Large-scale cold rolling seamless steel mill and rolling method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794314A (en) * | 2012-08-01 | 2012-11-28 | 莱芜钢铁集团有限公司 | Upper roller balance device of rolling mill |
| CN103464975A (en) * | 2013-09-10 | 2013-12-25 | 西北稀有金属材料研究院 | Preparation method of beryllium foil for manufacturing X-ray window |
| CN111495976A (en) * | 2020-04-29 | 2020-08-07 | 西安鼎鑫科技新材料有限公司 | Ultra-large-diameter cold pilger mill, seamless tube and production process thereof |
| CN114309076A (en) * | 2020-09-30 | 2022-04-12 | 宝武特种冶金有限公司 | Precision finishing method for seamless steel pipe cold rolling mill ring hole pattern |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1084168A (en) * | 1965-12-13 | 1900-01-01 | ||
| FR2594056B1 (en) * | 1986-02-07 | 1989-10-06 | Vallourec | INSTALLATION FOR ROLLING COLD PIPES OF THE COLD PILGRIM TYPE |
| DE4336422C2 (en) * | 1993-10-20 | 1996-10-24 | Mannesmann Ag | Crank drive for a cold pilger rolling mill |
| CN2436247Y (en) * | 2000-07-19 | 2001-06-27 | 林永兴 | Gearing mechanism for cold pipe rolling machine |
| CN2717552Y (en) * | 2003-10-14 | 2005-08-17 | 虞嘉元 | Head Pure rolling device for multi-roller cold-reducing mill |
| CN2761300Y (en) * | 2004-02-13 | 2006-03-01 | 邢维基 | High-efficient cold-reducing mill |
-
2008
- 2008-10-31 CN CN200810232059.8A patent/CN101722189B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794314A (en) * | 2012-08-01 | 2012-11-28 | 莱芜钢铁集团有限公司 | Upper roller balance device of rolling mill |
| CN103464975A (en) * | 2013-09-10 | 2013-12-25 | 西北稀有金属材料研究院 | Preparation method of beryllium foil for manufacturing X-ray window |
| CN111495976A (en) * | 2020-04-29 | 2020-08-07 | 西安鼎鑫科技新材料有限公司 | Ultra-large-diameter cold pilger mill, seamless tube and production process thereof |
| CN114309076A (en) * | 2020-09-30 | 2022-04-12 | 宝武特种冶金有限公司 | Precision finishing method for seamless steel pipe cold rolling mill ring hole pattern |
| CN114309076B (en) * | 2020-09-30 | 2023-05-16 | 宝武特种冶金有限公司 | Precision trimming method for ring hole type of seamless steel tube cold rolling mill |
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| CN101722189B (en) | 2013-05-08 |
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Owner name: HU'NAN QIU ZEYOU PATENT STRATEGIC PLANNING CO., LT Free format text: FORMER OWNER: QIU ZEYOU Effective date: 20101029 |
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Free format text: CORRECT: ADDRESS; FROM: 410011 28/F, SHUNTIANCHENG, NO.59, SECTION 2 OF FURONG MIDDLE ROAD, CHANGSHA CITY, HU'NAN PROVINCE TO: 410205 JUXING INDUSTRY BASE, NO.8, LUJING ROAD, CHANGSHA HIGH-TECH. DEVELOPMENT ZONE, YUELU DISTRICT, CHANGSHA CITY, HU'NAN PROVINCE |
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Effective date of registration: 20101109 Address after: 225215 No. 1, Sanjiang Avenue, Yanjiang Economic Development Zone, Jiangdu City, Jiangsu Province Applicant after: YANGZHOU CHENGDE STEEL PIPE Co.,Ltd. Address before: 710043 Torch Road three, East hi tech Zone, Shaanxi, Xi'an Applicant before: SHAANXI DUOLUN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Granted publication date: 20130508 Termination date: 20211031 |