CN106140821A - Milling train tilts and the bearing calibration of skew - Google Patents
Milling train tilts and the bearing calibration of skew Download PDFInfo
- Publication number
- CN106140821A CN106140821A CN201510149134.4A CN201510149134A CN106140821A CN 106140821 A CN106140821 A CN 106140821A CN 201510149134 A CN201510149134 A CN 201510149134A CN 106140821 A CN106140821 A CN 106140821A
- Authority
- CN
- China
- Prior art keywords
- milling train
- centrage
- rolling
- backing plate
- skew
- Prior art date
- 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.)
- Granted
Links
Abstract
The present invention relates to modifying rolling mill, particularly relate to milling train bearing calibration.A kind of milling train tilts and the bearing calibration of skew, and it includes: new rolling line installs positioning datum mensuration, key equipment reversible mill centrage and the determination in framework window machining center face, milling train tilts and the measurement of skew amount is to determine correcting scheme；The lift of milling train is installed: firm lifting pylon is set in milling train both sides, it is ensured that the centrage of pylon and the centrage of frame overlap；Use and the lifting instrument beam of frame in combination, realized the integral elevating of rolling-mill housing by hydraulic lifting system device, during use safety supports cushion block as safety guarantee；Carry out after lifting impaired grout blanket abolish, process foundation bolt and reset seat slurry plastic sheet, base plate centering, correction milling train, foundation bolt pretension, back-grouting construction, foundation bolt are twisted eventually.The method of the present invention can realize the reparation to impaired milling train.
Description
Technical field
The present invention relates to modifying rolling mill, particularly relate to milling train bearing calibration.
Background technology
The reversable mill of Thick Plate Plant is its key equipment, after using for many years, breaks down and also gets more and more.It is equally known that any defect in milling train installation process, all milling train any moment in use will be caused to break down.In the recent period, finding because installation backing plate and back-grouting layer defects will cause mill housing tilt the phenomenon with skew and cause roll change defect, this is necessary for that rolling line carries out large repairs and corrects milling train and tilts and skew.
Implement any method and measure is the key corrected.Commonly incremental launching method, single-piece is removed and is reinstalled method, overall pulling down reinstalls the kinds of schemes such as method, through repeatedly analyzing and researching, in many ways certification, finally determine milling train overall pulling down, the technique reinstalling, correct: milling train always weighs hundreds of upper kiloton, in Factory Building, crane gear cannot meet requirement, in order to reduce the maintenance time of the impact on producing as far as possible, owner is the highest to construction period, and milling train skew is due to the integral inclined and skew that backing plate is installed and secondary grout layer constructional deficiency causes, therefore determine to use Hydraulic Hoisting Technique milling train entirety to be promoted.Existing problems one are owing to rolling centerline original center reference point is lost, first need to redefine the Controling network installing location when rolling line equipment is installed again.The two of existing problems are that milling train surrounding basic geological study is complicated, the most effective lifting bracing frame layout is the key of this milling train slant correction, according to on-the-spot actual condition, proving through repeatedly field survey, design determines version and the installation site promoting bracing frame.The three of existing problems are that rolling mill roll line direction has a sluice, promote bottom after bracing frame is installed have 16% area unsettled, the unsettled problem of the area of 16% bottom bracing frame that how to solve also is the key of this process implementing.
Summary of the invention
It is contemplated that overcome the defect of prior art, it is provided that a kind of milling train tilts and the bearing calibration of skew.The method of the present invention can realize the reparation to impaired milling train.
In order to solve above-mentioned technical problem, a kind of milling train tilts and the bearing calibration of skew, and it includes:
Step one, milling train tilts the measurement with skew amount to determine correcting scheme；Including:
1) new rolling line is installed location Controling network and is determined
According to the principle of " short-term determined by long line ", needing the actual center line according to the distalmost end capital equipment on roll line is tentative rolling centerline;
Check Guan Bi is carried out for theoretical centerline and rolling line key equipment with tentative rolling centerline, take into account the practical situation of equipment completely and meet substantially uniform with the actual deviation value of all key equipments completely and absolute value is minimum, by analyzing and the correction value of the calculating formal rolling line centrage of formation;
High-precision GPS total powerstation is used to be finely adjusted whole to tentative rolling centerline, revise network control data, arrange on the basis of meeting production technology and form new independent SURVEYING CONTROL NETWORK and Measurement results tables of data, as this improvement and installation and the actual Controling network of Maintenance and Repair from now on；
The determination of elevation is compared with design load determine height of instrument by being chosen the meansigma methods of many group roller-way faces absolute altitude, is determined base point of installation and revises；
2) key equipment reversible mill centrage determines
On original backup roll change track centerline of fore side, coordinate points is for tentative point, use total powerstation to throw the cross line surveying rolling centerline, then close with changing track for roll milling train base plate, driving motor, optimize and compare data, calculate correction value, thus formally determine the formal centrage of key equipment；
The determination in framework window machining center face
Use laser tracker to measure milling train fore side, transmission side Hydraulic Roll Gap adjusting apparatus installing hole, simulate fore side and the virtual center face of transmitting hydraulic roll-separating mechanism installing hole；Process the window side of heap postwelding according to the virtual center face of simulation during window side machining；
Adjust milling train window center to be allowed to and new milling train center superposition, theodolite is erected at and newly throws on the formal centrage of milling train set, again thousand points of rods are fixed on base, are fixed on milling train window inner side by check lock lever, during measurement, by the theodolite set up, observe thousand points of rod terminations, adjust thousand points of rods and be allowed to meet observation when requiring, reading, and then whether judge data qualifier, meet milling train window center and new milling train center superposition；
Step 2, milling train lifting equipment is installed: be respectively mounted four groups of support tower at fore side and transmission side, the centrage of pylon and the centrage of frame is made to overlap by measuring to adjust, at two crossbeams of support tower top layout, a piece lifting crossbeam is installed in rolling mill frame window, wherein at the centrally disposed hoist cylinder of support tower top cross-bar, and with the bore of rolling mill screwdown mechanism center superposition, under lifting crossbeam in framework window, steel anchoring part is set, penetrate bottom steel anchoring part and top lift cylinder by steel strand wires, be allowed to form effective lift structure.By hydraulic lift(ing) cylinder, milling train entirety is promoted, and dispose safety supports cushion block, support milling train；
Step 3, reinstalls backing plate and base plate centering after abolishing the grout blanket bottom impaired milling train；
Step 4, milling train dropping place, remove the milling train lifting equipment in step 3, correct milling train；
Step 5, lower margin nut pretension, pretightning force is less than design load；
Step 6, after acceptance(check), back-grouting is constructed,
Step 7, after secondary grout layer maintenance completes, fastening lower margin nut is to 100% pretightning force.
Described milling train tilts and the bearing calibration of skew, and described step 2 includes
Described milling train tilts and the bearing calibration of skew, and described step 3 includes:
Milling train secondary grout layer abolishes step；
Base plate cleaning and step of milling；
Anchor (bolt) hole cleanup step；
Foundation bolt is repaired and inherent quality Non-Destructive Testing step；
New backing plate installation steps.
Described milling train tilts and the bearing calibration of skew, and described lower margin nut hole cleanup step includes:
(1) anchor hole lengths of steel pipes inside stuffing (sand) uses industrial dust collector to carry out inhaling husky process.
(2) the anchor hole lower anchor box internal residual dirt such as sand and oxide scale slag cleaning measure:
A connects water source, pours into bolt hole；
Compressed-air hose is fixed on steel pipe and inserts in anchor hole by b；
C selects the external diameter pump less than 300mm, and slush pump is put into bolt hole；
D opens compressed air, forms husky aqueous mixtures by compressed air after being stirred by bottom sand, and the mixture that compressed air is blown afloat by slush pump is extracted bolt hole out, entered in milling train sluice；
E anchor (bolt) hole needs after having cleared up to remove clean with sponge by remaining sewage in hole, uses torch for illumination visual inspection, till the residue such as anhydrous, husky reaches clean conditions.
Described new backing plate installation steps include: support adjustment plate in the welding of backing plate edge, basis is abolished to exposing reinforcing bar before backing plate is installed, is got up with reinforcement welding in adjustment screw rod correspondence backing plate support adjustment plate position, and backing plate is arranged on adjustment screw rod, adjust the absolute altitude of backing plate, level by adjusting screw rod；After flow grouting health preserving completes, cut off unnecessary adjustment screw rod, complete the installation of backing plate.
Described milling train tilts and the bearing calibration of skew, and described new backing plate is reserved with steam vent.
The present invention corrects inclination and the skew of trouble rolling mill rapidly, and construction quality is better than " milling train machinery plant engineering code for erection and inspection " GB50386 pertinent regulations.After the production line of rolling mill repaired resumes production, eliminate product quality defect.
Detailed description of the invention
The present invention is movable to mounted milling train generation backing plate and exposes, secondary grout layer fragmentation causes global displacement, tilts, and driving elevating capacity is not enough, and research and development are readjusted and mounting process.
Below, as a example by Handan Iron and Steel Co 3500 milling train, the present invention is described in further detail: a kind of milling train tilts and the bearing calibration of skew, and it includes:
Step one, milling train tilts the measurement with skew amount to determine correcting scheme；Including:
1) new rolling line is installed location Controling network and is determined
According to the principle of " short-term determined by long line ", needing the actual center line according to the distalmost end capital equipment on roll line is tentative rolling centerline;
Check Guan Bi is carried out for theoretical centerline and rolling line key equipment with tentative rolling centerline, take into account the practical situation of equipment completely and meet substantially uniform with the actual deviation value of all key equipments completely and absolute value is minimum, by analyzing and the correction value of the calculating formal rolling line centrage of formation;
High-precision GPS total powerstation is used to be finely adjusted whole to tentative rolling centerline, revise network control data, arrange on the basis of meeting production technology and form new independent SURVEYING CONTROL NETWORK and Measurement results tables of data, as this improvement and installation and the actual Controling network of Maintenance and Repair from now on；
The determination of elevation is compared with design load determine height of instrument by being chosen the meansigma methods of many group roller-way faces absolute altitude, is determined base point of installation and revises；
2) key equipment reversible mill centrage determines
On original backup roll change track centerline of fore side, coordinate points is for tentative point, use total powerstation to throw the cross line surveying rolling centerline, then close with changing track for roll milling train base plate, driving motor, optimize and compare data, calculate correction value, thus formally determine the formal centrage of key equipment；
The determination in framework window machining center face
Use laser tracker to measure milling train fore side, transmission side Hydraulic Roll Gap adjusting apparatus installing hole, simulate fore side and the virtual center face of transmitting hydraulic roll-separating mechanism installing hole；Process the window side of heap postwelding according to the virtual center face of simulation during window side machining；
Adjust milling train window center to be allowed to and new milling train center superposition, theodolite is erected at and newly throws on the formal centrage of milling train set, again thousand points of rods are fixed on base, are fixed on milling train window inner side by check lock lever, during measurement, by the theodolite set up, observe thousand points of rod terminations, adjust thousand points of rods and be allowed to meet observation when requiring, reading, and then whether judge data qualifier, meet milling train window center and new milling train center superposition；
Step 2, milling train lifting equipment is installed: be respectively mounted four groups of support tower at fore side and transmission side, the centrage of pylon and the centrage of frame is made to overlap by measuring to adjust, at two crossbeams of support tower top layout, a piece lifting crossbeam is installed in rolling mill frame window, wherein at the centrally disposed hoist cylinder of support tower top cross-bar, and with the bore of rolling mill screwdown mechanism center superposition, under lifting crossbeam in framework window, steel anchoring part is set, penetrate bottom steel anchoring part and top lift cylinder by steel strand wires, be allowed to form effective lift structure.By hydraulic lift(ing) cylinder, milling train entirety is promoted, and dispose safety supports cushion block, support milling train；
Step 3, reinstalls backing plate and base plate centering after abolishing the grout blanket bottom impaired milling train；
Step 4, milling train dropping place, remove the milling train lifting equipment in step 3, correct milling train；
Step 5, lower margin nut pretension, pretightning force is less than design load；
Step 6, after acceptance(check), back-grouting is constructed,
Step 7, after secondary grout layer maintenance completes, fastening lower margin nut is to 100% pretightning force.
Described milling train tilts and the bearing calibration of skew, and described step 3 includes:
Milling train secondary grout layer abolishes step；
Base plate cleaning and step of milling；
Anchor (bolt) hole cleanup step；
Foundation bolt is repaired and inherent quality Non-Destructive Testing step；
New backing plate installation steps.
Described lower margin nut hole cleanup step includes:
(1) anchor hole lengths of steel pipes inside stuffing (sand) uses industrial dust collector to carry out inhaling husky process.
(2) the anchor hole lower anchor box internal residual dirt such as sand and oxide scale slag cleaning measure:
A connects water source, pours into bolt hole；
Compressed-air hose is fixed on steel pipe and inserts in anchor hole by b；
C selects the external diameter pump less than 300mm, and slush pump is put into bolt hole；
D opens compressed air, forms husky aqueous mixtures by compressed air after being stirred by bottom sand, and the mixture that compressed air is blown afloat by slush pump is extracted bolt hole out, entered in milling train sluice；
E anchor (bolt) hole needs after having cleared up to remove clean with sponge by remaining sewage in hole, uses torch for illumination visual inspection, till the residue such as anhydrous, husky reaches clean conditions.
Described new backing plate installation steps include: support adjustment plate in the welding of backing plate edge, basis is abolished to exposing reinforcing bar before backing plate is installed, is got up with reinforcement welding in adjustment screw rod correspondence backing plate support adjustment plate position, and backing plate is arranged on adjustment screw rod, adjust the absolute altitude of backing plate, level by adjusting screw rod；After flow grouting health preserving completes, cut off unnecessary adjustment screw rod, complete the installation of backing plate.
Described milling train tilts and the bearing calibration of skew, and described new backing plate is reserved with steam vent.
Claims (6)
1. a milling train tilts and the bearing calibration of skew, it is characterised in that it includes:
Step one, milling train tilts the measurement with skew amount to determine correcting scheme；Including:
1) new rolling line is installed location Controling network and is determined
According to the principle of " short-term determined by long line ", needing the actual center line according to the distalmost end capital equipment on roll line is tentative rolling centerline;
Check Guan Bi is carried out for theoretical centerline and rolling line key equipment with tentative rolling centerline, take into account the practical situation of equipment completely and meet substantially uniform with the actual deviation value of all key equipments completely and absolute value is minimum, by analyzing and the correction value of the calculating formal rolling line centrage of formation;
High-precision GPS total powerstation is used to be finely adjusted whole to tentative rolling centerline, revise network control data, arrange on the basis of meeting production technology and form new independent SURVEYING CONTROL NETWORK and Measurement results tables of data, as this improvement and installation and the actual Controling network of Maintenance and Repair from now on；
The determination of elevation is compared with design load determine height of instrument by being chosen the meansigma methods of many group roller-way faces absolute altitude, is determined base point of installation and revises；
2) key equipment reversible mill centrage determines
On original backup roll change track centerline of fore side, coordinate points is for tentative point, use total powerstation to throw the cross line surveying rolling centerline, then close with changing track for roll milling train base plate, driving motor, optimize and compare data, calculate correction value, thus formally determine the formal centrage of key equipment；
The determination in framework window machining center face
Use laser tracker to measure milling train fore side, transmission side Hydraulic Roll Gap adjusting apparatus installing hole, simulate fore side and the virtual center face of transmitting hydraulic roll-separating mechanism installing hole；Process the window side of heap postwelding according to the virtual center face of simulation during window side machining；
Adjust milling train window center to be allowed to and new milling train center superposition, theodolite is erected at and newly throws on the formal centrage of milling train set, again thousand points of rods are fixed on base, are fixed on milling train window inner side by check lock lever, during measurement, by the theodolite set up, observe thousand points of rod terminations, adjust thousand points of rods and be allowed to meet observation when requiring, reading, and then whether judge data qualifier, meet milling train window center and new milling train center superposition；
Step 2, milling train lifting equipment is installed: be respectively mounted four groups of support tower at fore side and transmission side, the centrage of pylon and the centrage of frame is made to overlap by measuring to adjust, at two crossbeams of support tower top layout, a piece lifting crossbeam is installed in rolling mill frame window, wherein at the centrally disposed hoist cylinder of support tower top cross-bar, and with the bore of rolling mill screwdown mechanism center superposition, under lifting crossbeam in framework window, steel anchoring part is set, penetrate bottom steel anchoring part and top lift cylinder by steel strand wires, be allowed to form effective lift structure；
By hydraulic lift(ing) cylinder, milling train entirety is promoted, and dispose safety supports cushion block, support milling train；
Step 3, reinstalls backing plate and base plate centering after abolishing the grout blanket bottom impaired milling train；
Step 4, milling train dropping place, remove the milling train lifting equipment in step 3, correct milling train；
Step 5, lower margin nut pretension, pretightning force is less than design load；
Step 6, after acceptance(check), back-grouting is constructed,
Step 7, after secondary grout layer maintenance completes, fastening lower margin nut is to 100% pretightning force.
2. want the milling train described in 1 to tilt and the bearing calibration of skew according to right, it is characterised in that described step 2 includes: a makes the centrage of lifting pylon and the centrage of frame overlap by measuring to adjust；B is at two crossbeams of support tower top layout, a piece lifting crossbeam is installed in rolling mill frame window, wherein at the centrally disposed hoist cylinder of support tower top cross-bar, and with the bore of rolling mill screwdown mechanism center superposition, under lifting crossbeam in framework window, steel anchoring part is set, penetrate bottom steel anchoring part and top lift cylinder by steel strand wires, make beam and rolling-mill housing form lift structure firm, effective；By hydraulic synchronous control system, two side cylinders are made to synchronize raising and lowering；C uses bottom safety supports cushion block frames after milling train entirety promotes, it is ensured that operation process and equipment safety.
3. want the milling train described in 1 to tilt and the bearing calibration of skew according to right, it is characterised in that described step 3 includes:
Milling train secondary grout layer abolishes step；
Base plate cleaning and step of milling；
Anchor (bolt) hole cleanup step；
Foundation bolt is repaired and inherent quality Non-Destructive Testing step；
New backing plate installation steps.
4. want the milling train described in 3 to tilt and the bearing calibration of skew according to right, it is characterised in that described lower margin nut hole cleanup step includes:
(1) anchor hole lengths of steel pipes inside stuffing (sand) uses industrial dust collector to carry out inhaling husky process；
(2) the anchor hole lower anchor box internal residual dirt such as sand and oxide scale slag cleaning measure；
A connects water source, pours into bolt hole；
Compressed-air hose is fixed on steel pipe and inserts in anchor hole by b；
C selects the external diameter pump less than 300mm, and slush pump is put into bolt hole；
D opens compressed air, forms husky aqueous mixtures by compressed air after being stirred by bottom sand, and the mixture that compressed air is blown afloat by slush pump is extracted bolt hole out, entered in milling train sluice；
E anchor (bolt) hole needs after having cleared up to remove clean with sponge by remaining sewage in hole, uses torch for illumination visual inspection, till the residue such as anhydrous, husky reaches clean conditions.
5. want the milling train described in 3 to tilt and the bearing calibration of skew according to right, it is characterized in that, described new backing plate installation steps include: support adjustment plate in the welding of backing plate edge, basis is abolished to exposing reinforcing bar before backing plate is installed, is got up with reinforcement welding in adjustment screw rod correspondence backing plate support adjustment plate position, and backing plate is arranged on adjustment screw rod, adjust the absolute altitude of backing plate, level by adjusting screw rod；After flow grouting health preserving completes, cut off unnecessary adjustment screw rod, complete the installation of backing plate.
6. want the milling train described in 5 to tilt and the bearing calibration of skew according to right, it is characterised in that on described backing plate, to be reserved with steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149134.4A CN106140821B (en) | 2015-04-01 | 2015-04-01 | Milling train tilts and the bearing calibration of skew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149134.4A CN106140821B (en) | 2015-04-01 | 2015-04-01 | Milling train tilts and the bearing calibration of skew |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106140821A true CN106140821A (en) | 2016-11-23 |
| CN106140821B CN106140821B (en) | 2018-07-13 |
Family
ID=57338080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510149134.4A Active CN106140821B (en) | 2015-04-01 | 2015-04-01 | Milling train tilts and the bearing calibration of skew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106140821B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083473A (en) * | 2017-04-21 | 2017-08-22 | 王宇 | A kind of workpiece circumferential position automatic alignment mechanism |
| CN109387228A (en) * | 2017-08-10 | 2019-02-26 | 中国二十冶集团有限公司 | Heating furnace reformation project survey controls independent positioning method |
| CN110523778A (en) * | 2019-09-25 | 2019-12-03 | 马鞍山钢铁股份有限公司 | A kind of control method of universal profiled rolling mill upper roller compensating cylinder roll change position |
| CN110666943A (en) * | 2019-09-19 | 2020-01-10 | 中建材创新科技研究院有限公司 | Zero point correction device and method for pushing wrapping edges |
| CN113399471A (en) * | 2021-05-26 | 2021-09-17 | 鞍钢股份有限公司 | Method for adjusting inclination value of roller system of rolling mill after crossing |
| CN114082788A (en) * | 2021-11-02 | 2022-02-25 | 阳春新钢铁有限责任公司 | Rapid assembly method for maintenance of short-stress-path rolling mill |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6134935A (en) * | 1998-07-15 | 2000-10-24 | Sms Schloemann-Siemag Aktiengesellschaft | Apparatus and method for determining and setting a stand center and adjusting positions of a roll stand |
| CN101275400A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢建设集团有限公司 | Method for mounting large-sized rolling mills |
| CN101391267A (en) * | 2008-11-04 | 2009-03-25 | 北京首钢建设集团有限公司 | On-line assembling entirety on-position assembling method of edge mill |
| CN101664760A (en) * | 2008-09-05 | 2010-03-10 | 中国二十冶建设有限公司 | Method for adjusting housings outside single stand reversible rolling mill |
| CN102950464A (en) * | 2011-08-17 | 2013-03-06 | 五冶集团上海有限公司 | Method for mounting continuous production line of non-oriented silicon steel |
| CN103862251A (en) * | 2012-12-13 | 2014-06-18 | 中国二十冶集团有限公司 | Hoisting method of large device constrained by three-dimensional space and an auxiliary device of large device |
-
2015
- 2015-04-01 CN CN201510149134.4A patent/CN106140821B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6134935A (en) * | 1998-07-15 | 2000-10-24 | Sms Schloemann-Siemag Aktiengesellschaft | Apparatus and method for determining and setting a stand center and adjusting positions of a roll stand |
| CN101275400A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢建设集团有限公司 | Method for mounting large-sized rolling mills |
| CN101664760A (en) * | 2008-09-05 | 2010-03-10 | 中国二十冶建设有限公司 | Method for adjusting housings outside single stand reversible rolling mill |
| CN101391267A (en) * | 2008-11-04 | 2009-03-25 | 北京首钢建设集团有限公司 | On-line assembling entirety on-position assembling method of edge mill |
| CN102950464A (en) * | 2011-08-17 | 2013-03-06 | 五冶集团上海有限公司 | Method for mounting continuous production line of non-oriented silicon steel |
| CN103862251A (en) * | 2012-12-13 | 2014-06-18 | 中国二十冶集团有限公司 | Hoisting method of large device constrained by three-dimensional space and an auxiliary device of large device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083473A (en) * | 2017-04-21 | 2017-08-22 | 王宇 | A kind of workpiece circumferential position automatic alignment mechanism |
| CN109387228A (en) * | 2017-08-10 | 2019-02-26 | 中国二十冶集团有限公司 | Heating furnace reformation project survey controls independent positioning method |
| CN110666943A (en) * | 2019-09-19 | 2020-01-10 | 中建材创新科技研究院有限公司 | Zero point correction device and method for pushing wrapping edges |
| CN110523778A (en) * | 2019-09-25 | 2019-12-03 | 马鞍山钢铁股份有限公司 | A kind of control method of universal profiled rolling mill upper roller compensating cylinder roll change position |
| CN110523778B (en) * | 2019-09-25 | 2020-09-04 | 马鞍山钢铁股份有限公司 | Control method for roll changing position of upper roll balance cylinder of universal section mill |
| CN113399471A (en) * | 2021-05-26 | 2021-09-17 | 鞍钢股份有限公司 | Method for adjusting inclination value of roller system of rolling mill after crossing |
| CN113399471B (en) * | 2021-05-26 | 2023-03-03 | 鞍钢股份有限公司 | Method for adjusting inclination value of roller system of rolling mill after crossing |
| CN114082788A (en) * | 2021-11-02 | 2022-02-25 | 阳春新钢铁有限责任公司 | Rapid assembly method for maintenance of short-stress-path rolling mill |
| CN114082788B (en) * | 2021-11-02 | 2023-12-29 | 阳春新钢铁有限责任公司 | Quick assembly method for repairing short stress line rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106140821B (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106140821A (en) | Milling train tilts and the bearing calibration of skew | |
| CN106320715B (en) | A kind of construction method of installation of the I-shaped inclined-plane built-in fitting of large size | |
| CN104196166B (en) | A kind of preparation method of ultra-large type combination H type section Steel Column | |
| CN102493554B (en) | Abutting joint device of steel lattice column, and construction method of same | |
| CN102434003B (en) | Heavy battened steel column construction process | |
| CN102943565A (en) | Construction method of large-sized arc-shaped wall | |
| CN103397701B (en) | Adjustable positioning structure for pre-buried bolt double-layered positioning plate and construction method | |
| CN101440667A (en) | Mounting method for wide span single layer rain shed reticulated shell structure | |
| CN103590603B (en) | Large span multi-curvature shell structure of reinforced concrete method | |
| CN103526954A (en) | Support for overweight precision embedded part and construction method thereof | |
| CN105839985A (en) | Hydropower station rectangular high tower hydraulic climb slip form system and construction method | |
| CN110107114B (en) | Lateral limiting method for jacking and rectifying of brick-concrete structure house | |
| CN115162182B (en) | Cantilever type steel box girder high-precision cable hoisting construction method | |
| CN106223623A (en) | Steel construction box arched roof truss installation method | |
| CN204849798U (en) | Rag bolt fixed bolster | |
| CN110359373B (en) | Beam body deviation rectifying method for portal pier bridge | |
| CN105926958A (en) | Mounting method for sill anchor combined support frame for steel structure shear wall and outer frame column base of super high-rise building | |
| CN111236089A (en) | Uneven jacking system and uneven jacking construction method for existing bridge superstructure | |
| CN102704413A (en) | Construction method for jacking arch bridge | |
| CN101476338B (en) | Construction process for miniature steel pipe pile reinforced sedimentation base | |
| CN106140831B (en) | Milling train tilts and the correction locating measurement method of skew | |
| CN205822792U (en) | A kind of regulation support for masonry direct-burried | |
| CN101831916B (en) | Method for mounting large-size sleeve bolt framework in combined type | |
| CN110004939A (en) | A kind of device and construction method applied to foundation pit support replacement | |
| JP2011256652A (en) | Pneumatic caisson settling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |