CN109773148A - A kind of installation method of the short mandrel Continuous Casting Rolls of elastic conjunction - Google Patents
A kind of installation method of the short mandrel Continuous Casting Rolls of elastic conjunction Download PDFInfo
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- CN109773148A CN109773148A CN201910147615.XA CN201910147615A CN109773148A CN 109773148 A CN109773148 A CN 109773148A CN 201910147615 A CN201910147615 A CN 201910147615A CN 109773148 A CN109773148 A CN 109773148A
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Abstract
The present invention provides a kind of installation method of short mandrel Continuous Casting Rolls of elastic conjunction, due to being installed as elastic conjunction between the roller set and mandrel of short mandrel Continuous Casting Rolls, therefore the present invention realizes assembly using the thermal expansion and contraction principle of material, i.e. roller set is heated to be assembled with the mandrel of room temperature after set temperature, or, roller set is assembled after being heated to set temperature with cooling mandrel, can be realized the requirement of short mandrel Continuous Casting Rolls interference fit；The present invention is suitable for the installation of short mandrel Continuous Casting Rolls.
Description
Technical field
The present invention relates to Continuous Casting Rolls processing, the installation method of specially a kind of short mandrel Continuous Casting Rolls of elastic conjunction.
Background technique
Continuous Casting Rolls are the critical components of bending section on conticaster, segmental arc, straightening section and horizontal segment, and Continuous Casting Rolls support dummy ingot
The feeding and pull-out of bar play the role of support, extruding and aligning during the pull-out of steel billet, and the service life of conticaster depends on
The length of Continuous Casting Rolls service life, the assembly method of Continuous Casting Rolls are then the key factors for influencing its service life.
In general, matching between the roller set and mandrel of long mandrel type Continuous Casting Rolls is combined into clearance fit, is coupled with key, be normal
Bearing block and the bearing etc. that intermediate calender rolls set and its two sides are first filled under temperature, then install the roller set of two sides and the bearing block and axis of end
Hold equal attachmentes.
Long mandrel type continuous casting roll structure covers 2, third as shown in Figure 1, long mandrel type Continuous Casting Rolls cover the 1, second roller by the first roller
The compositions such as roller set 3, long mandrel 10 and key 11.First the key 5 that the second roller covers at 2 is mounted on long mandrel 10 when installation, then by the
Two rollers set 2 is installed into long mandrel 10, then installs the second roller and covers the components such as bearing, the bearing block of 2 two sides；Next can pacify respectively
The key 11 at the first roller of two sides set 1 and third roller set 3 is filled, then the first roller set 1 and third roller set 3 are installed into long mandrel respectively
10；The attachmentes such as the bearing and bearing block of last mounting end.The installation method is only used for the installation of long mandrel, is unfavorable for short core
The installation of axis Continuous Casting Rolls；And this method is only applicable to clearance fit, is unfavorable for the Continuous Casting Rolls of interference fit.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of installation side of short mandrel Continuous Casting Rolls of elastic conjunction
Method can be realized the requirement of short mandrel Continuous Casting Rolls interference fit suitable for the installation of short mandrel Continuous Casting Rolls.
The present invention is to be achieved through the following technical solutions:
A kind of installation method of the short mandrel Continuous Casting Rolls of elastic conjunction, using heating roller set or heating roller set and cooling of central
Method carry out elastic conjunction.
Preferably, elastic conjunction is carried out using the method for heating roller set, specifically comprised the following steps:
Step 1, the first roller set and third roller set are heated to 320~350 DEG C, the second end of the first mandrel is packed into first
In the first end of roller set, the first end of the 4th mandrel is packed into the second end of third roller set；The first end of second mandrel is filled
In the second end for entering the first roller set, the second end of third mandrel is packed into the first end of third roller set；
Step 2, after the first roller set and third roller set are cooling, second group of bearing assembly is installed in the middle part of the second mandrel, it will
320-350 DEG C of the first end cap of the second roller set is had been heated in the second end of the second mandrel；The is packed into second roller set
The first end of third mandrel is finally packed into the of the second roller set by one water guide set, the third group bearing assembly for preparing of installation prepackage
In two ends, the installation of third roller set assembly is completed；
Step 3, the 4th group of bearing in first group of bearing assembly and the 4th mandrel second end is completed in the first mandrel first end
The assembly of component.
Further, it in step 2, is rechecked and is corrected after the first roller set and third roller set are cooling, make roller set and core
Axis is coaxial.
Further, step 1 specifically: the first roller set and third roller set are heated to 320~350 DEG C, the first roller set and
Third roller set is fixed on vertically respectively in the tooling of preheating, and the first end of the first roller set and the second end of third roller set are respectively positioned on
The second end of first mandrel is packed into the first end of the first roller set by end, and the first end of the 4th mandrel is packed into third roller set
In second end；First roller set and third roller set opposite direction are placed, the first end position for second end and third the roller set for covering the first roller
In upper end, the first end of the second mandrel is packed into the second end of the first roller set, the second end of third mandrel is packed into third roller
In the first end of set.
Further, in step 2, after the second roller set covers on the second mandrel, lead to annular cold air at the second roller set both ends,
Lead to cold air to the bearing block lubrication hole in second group of bearing assembly；After the installation of third group bearing assembly, bearing block therein is given
Lubrication hole leads to cold air.
Further, as unit of separate unit fan-shaped section, when assembling the short mandrel Continuous Casting Rolls of more sets, short mandrel Continuous Casting Rolls will be covered more
The assembly work of step 1 is successively carried out according to sequencing, then sequentially successively carries out the device work of step 2, finally
The assembly work of step 3 is successively carried out according to sequencing.
Preferably, elastic conjunction is carried out using the method for heating roller set and cooling of central, specifically comprised the following steps:
Step 1, the first roller set, the second roller set and third roller set are heated to 220~250 DEG C and kept the temperature；
Step 2, the first mandrel surface is dipped into -70~-90 DEG C in liquid nitrogen, then the second end of the first mandrel is packed into the
In the first end of one roller set；Second mandrel surface is dipped into -70~-90 DEG C in liquid nitrogen, then the first end dress of the second mandrel
In the second end for entering the first roller set；Second group of bearing assembly is installed in the middle part of the second mandrel, is pacified in the second mandrel second end end
The first water guide set is filled, then by the first end cap of the second roller set under keeping warm mode in the second end of the second mandrel；By third core
Axis surface is dipped into -70~-90 DEG C in liquid nitrogen, is then packed into the first end of third mandrel in the second end of the second roller set；It will
First end cap of the third roller set under keeping warm mode is pacified in the second end of third mandrel, and in the second end end of third mandrel
Fill the second water guide set；4th mandrel surface is dipped into -70~-90 DEG C in liquid nitrogen, is then packed into the first end of the 4th mandrel
In the second end of third roller set；
Step 3, the 4th group of bearing in first group of bearing assembly and the 4th mandrel second end is completed in the first mandrel first end
The assembly of component.
Further, in step 2, first the first roller set is fixed in tooling vertically, the first mandrel is packed into the first roller set, then
First roller set is reversely fixed in tooling, then carries out subsequent installation.
Further, in step 2, after the installation of the second mandrel, give the first roller set both ends logical annular cold air；Third mandrel peace
After dress, gives the second roller set both ends logical annular cold air, lead to cold air to the bearing block lubrication hole in second group of bearing assembly；4th
After mandrel installation, gives third roller set both ends logical annular cold air, lead to cold sky to the bearing block lubrication hole in third group bearing assembly
Gas.
Preferably, the magnitude of interference between roller set and mandrel is 0.41~0.45mm.
Compared with prior art, the invention has the following beneficial technical effects:
Assembly method of the invention, due to being installed as elastic conjunction between the roller set and mandrel of short mandrel Continuous Casting Rolls,
The present invention realizes assembly using the thermal expansion and contraction principle of material, i.e. roller set is heated to be filled with the mandrel of room temperature after set temperature
Match, alternatively, roller set is assembled after being heated to set temperature with cooling mandrel, can be realized short mandrel Continuous Casting Rolls interference fit
Requirement；The present invention is suitable for the installation of short mandrel Continuous Casting Rolls.
Further, when being assembled using the method that only heating roller covers, roller sleeving temperature is sufficiently high, and mandrel cooling is not necessarily to,
Elastic conjunction can be carried out, for liquid nitrogen cooling of central, more easily operative employee is operated, and can be to avoid high price liquid nitrogen
Use, it is at low cost.Meanwhile being carried out by the way of segmentation installation, the assembly of the first roller set and third roller set is first carried out respectively,
The two is assembled together again, the first roller set and third roller for having completed assembly in this way can be rechecked and correct roller set after covering cooling
With the concentricity of mandrel, guarantee the assembly of entire roller to be made to be maintained in the concentricity of needs after the second roller set is packed into this,
The qualification rate of product can be effectively controlled, rejection rate is reduced.
Further, the assembly of each step can guarantee that mandrel can by the effect of gravity all by the way of perpendicular dress
It is installed in place.
Further, after the second roller set covers on the second mandrel, in the logical annular cold air in the second roller set both ends, second group is given
Bearing block lubrication hole in bearing assembly leads to cold air；It is logical to bearing block lubrication hole therein after the installation of third group bearing assembly
Cold air can protect bearing assembly, and high temperature is avoided to cause adverse effect to it.
Further, due to waiting the first roller set and third roller to cover the cooling requirement regular hour, the present invention is in life
When production, the assembly of the first roller of more sets set and third roller set is successively carried out, then successively carries out the assembly of the second roller set, is just saved in this way
Assembly time saves the set-up time, improves production efficiency, can be realized the installation of mass.
Further, when being assembled using the method for heating roller set and cooling of central, heating temperature is lower, is easy to guarantee
Heating temperature, meanwhile, primary in sequence to complete a whole set of assembly, operating procedure is simple.
Detailed description of the invention
Fig. 1 is the sectional view of existing long mandrel type Continuous Casting Rolls.
Fig. 2 is the sectional view of the short mandrel Continuous Casting Rolls of the present invention.
Fig. 3 is first method first step assemble sequence of the present invention.
Fig. 4 is the sectional view after first method second step of the present invention assembly.
Fig. 5 is second method assemble sequence of the present invention.
In figure: the first roller set 1, the second roller set 2, third roller set 3, the first mandrel 4, the second mandrel 5, third mandrel 6, the 4th
Mandrel 7, the first water guide set 8, the second water guide set 9, long mandrel 10, key 11.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit
It is fixed.
The present invention needs to be installed as elastic conjunction between the roller set of short mandrel Continuous Casting Rolls to be mounted and mandrel, and magnitude of interference exists
Between 0.41~0.45mm, therefore its installation will go to realize and assemble that the assembly of each step is all using the thermal expansion and contraction principle of material
By the way of perpendicular dress.
The structure of short mandrel Continuous Casting Rolls is as shown in Fig. 2, include that the first roller covers the 1, second roller set 2, third roller covers the 3, first core
Axis 4, the second mandrel 5, third mandrel 6, the 4th mandrel 7, the first water guide cover the 8, second water guide and cover 9, first set bearing assembly, second
Cover bearing assembly, third set bearing assembly and the 4th set of bearing assembly.
The first end of first mandrel 4 installs first set bearing assembly, and the second end of the first mandrel 4 is packed into the first roller set 1
In first end；The first end of second mandrel 5 is packed into the second end of the first roller set 1, and second set of axis is installed at the middle part of the second mandrel 5
Bearing assembly, the second end of the second mandrel 5 are packed into the first end of the second roller set 2；The first end of third mandrel 6 is packed into the second roller set
In 2 second end, the middle part installation third of third mandrel 6 covers bearing assembly, and the second end of third mandrel 6 is packed into third roller set 3
First end in, the first end of the 4th mandrel 7 is packed into the second end of third roller set 3, the second end installation the 4th of the 4th mandrel 7
Cover bearing assembly.First water guide set 8, third roller set 3 are set in second roller set 2 and between the second mandrel 5 and third mandrel 6
It is interior and be arranged between third mandrel 6 and third mandrel 7 second water guide set 9.Bearing assembly includes bearing and bearing block.
First method is only to cover to heat to roller, and not cooling to mandrel, assembly method specifically comprises the following steps:
Step 1: would be heated to 320~350 DEG C of the first roller set 1 and the works that third roller set 3 is fixed on preheating vertically respectively
It loads onto, the first end of the first roller set 1 and the second end of third roller set 3 are respectively positioned on upper end；The second end of first mandrel 4 is packed into the
In the first end of one roller set 1, the first end of the 4th mandrel 7 is packed into the second end of third roller set 3；Then opposite direction is placed,
The second end of the first roller set 1 and the first end of third roller set 3 are located at upper end at this time, and the first end of the second mandrel 5 is packed into first
In the second end of roller set 1, the second end of third mandrel 6 is packed into the first end of third roller set 3, as shown in Fig. 3 assembly.
Step 2: installing second group of bearing group in the middle part of the second mandrel 5 after the first roller set 1 and third roller set 3 are cooling
Part, by have been heated to 320~350 DEG C the second roller set 2 the first end cap in the second end of the second mandrel 5, tooling bottom
Start logical cold air, covers the logical annular cold air in 2 both ends in the second roller, lead to cold air to the bearing block lubrication hole on the second mandrel 5；
The first water guide set 8 is packed into second roller set 2, the third group bearing assembly that installation prepackage prepares is (to bearing block lubrication hole after loading
Logical cold air), finally the first end of third mandrel 6 is packed into the second end of the second roller set 2, completes 3 assembly of third roller set
Installation, as shown in Fig. 4 assembly.
Step 3: completing in 4 first end of the first mandrel the 4th group of axis in first group of bearing assembly and 7 second end of the 4th mandrel
The assembly of bearing assembly.
It is certain due to waiting the first roller set 1 for having completed assembly and third roller to cover 3 cooling requirements in first method
Time, if can complete in batches 14 group of first roller during waiting to be cooled in terms of 14 sets of Continuous Casting Rolls of separate unit fan-shaped section and cover 1 He
The installment work of third roller set 3, then the assembly work of the second roller set 2 is sequentially completed, assembly time has just been saved in this way,
Efficiency is improved, large batch of production is suitable for.It can be rechecked after having completed 3 cooling of the first roller set 1 and third roller set of assembly
With the concentricity of correct roller set and mandrel, and guarantee that after the second roller set 2 is packed into the assembly of entire roller can, which be maintained at, needs with this
In the concentricity wanted, the qualification rate of product can be effectively controlled in this way, reduce rejection rate.
Second method be to the heating of roller set and to the cooling of mandrel, to realize of short duration gap assembly, use
Installation method is:
First roller the 1, second roller of set set 2 and third roller set 3 are heated to 220~250 DEG C and kept the temperature, presses Fig. 2 vertically from a left side
(bearing block worn on the second mandrel 5 and third mandrel 6, which needs to pre-install, to be prepared) is assembled to right sequence, assemble sequence is shown in
Fig. 5, specific order are as follows: (1) first roller set 1 is vertically installed in tooling, and (mandrel surface is dipped into -70 to the first mandrel 4 in liquid nitrogen
~-90 DEG C) it is initially charged with the first roller set 1；(2) the assembly opposite direction completed in (1) is placed in tooling, is packed into the second mandrel 5
(mandrel surface is dipped into -70~-90 DEG C in liquid nitrogen), it is cooling by two close end and bottom ventilation to the first roller set 1；(3) it successively fills
Enter the bearing block and the first water guide set 8 that prepackage prepares, (mandrel surface is in liquid for the second roller set 2 and third mandrel 6 under keeping warm mode
- 70~-90 DEG C are dipped into nitrogen), give bearing block lubrication hole ventilating and cooling of the second roller set 2 in two close end and the second mandrel 5；
(4) the third roller set 3 being sequentially loaded under keeping warm mode, the second water guide set 9, the 4th mandrel 7 (mandrel surface is dipped into liquid nitrogen-
70~-90 DEG C), on third mandrel 6 bearing block lubrication hole and third roller set 3 lean on two close end ventilating and cooling, finally assemble two
Bearing block and end cap of side etc..
The mode that the present invention is all made of perpendicular dress is assembled, and can guarantee that mandrel is mountable to by the effect of gravity
Position.
Claims (10)
1. a kind of installation method of the short mandrel Continuous Casting Rolls of elastic conjunction, which is characterized in that using heating roller set or heating roller set
Elastic conjunction is carried out with the method for cooling of central.
2. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction described in claim 1, which is characterized in that using heating roller set
Method carries out elastic conjunction, specifically comprises the following steps:
Step 1, the first roller set (1) and third roller set (3) are heated to 320~350 DEG C, the second end of the first mandrel (4) is filled
In the first end for entering the first roller set (1), the first end of the 4th mandrel (7) is packed into the second end of third roller set (3)；By second
The first end of mandrel (5) is packed into the second end of the first roller set (1), and the second end of third mandrel (6) is packed into third roller set (3)
First end in；
Step 2, after the first roller set (1) and third roller set (3) are cooling, second group of bearing group is installed in the middle part of the second mandrel (5)
Part, by have been heated to 320~350 DEG C the second roller set (2) the first end cap in the second end of the second mandrel (5)；Second
It is packed into the first water guide set (8) in roller set (2), the third group bearing assembly that installation prepackage prepares, finally by the of third mandrel (6)
One end is packed into the second end of the second roller set (2), completes the installation of third roller set (3) assembly；
Step 3, the 4th group of axis in first group of bearing assembly and the 4th mandrel (7) second end is completed in the first mandrel (4) first end
The assembly of bearing assembly.
3. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 2, which is characterized in that in step 2,
It is rechecked and is corrected after first roller set (1) and third roller set (3) are cooling, keep roller set and mandrel coaxial.
4. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 2, which is characterized in that step 1 is specific
Are as follows: the first roller set (1) and third roller set (3) are heated to 320~350 DEG C, the first roller set (1) and third roller set (3) erect respectively
It is directly fixed in the tooling of preheating, the first end of the first roller set (1) and the second end of third roller set (3) are respectively positioned on upper end, by
The second end of one mandrel (4) is packed into the first end of the first roller set (1), and the first end of the 4th mandrel (7) is packed into third roller set
(3) in second end；First roller set (1) and third roller set (3) opposite direction are placed, and the second end and third of the first roller set (1) are made
The first end of roller set (3) is located at upper end, the first end of the second mandrel (5) is packed into the second end of the first roller set (1), by third
The second end of mandrel (6) is packed into the first end of third roller set (3).
5. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 2, which is characterized in that in step 2, the
After two roller sets (2) cover on the second mandrel (5), in the logical annular cold air in the second roller set (2) both ends, in second group of bearing assembly
Bearing block lubrication hole lead to cold air；After the installation of third group bearing assembly, lead to cold air to bearing block lubrication hole therein.
6. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 2, which is characterized in that with separate unit sector
Section is unit, when assembling the short mandrel Continuous Casting Rolls of more sets, will cover short mandrel Continuous Casting Rolls according to sequencing more and successively carries out step 1
Assembly work, then the device work of step 2 is sequentially successively carried out, finally step 3 is successively carried out according to sequencing
Assembly work.
7. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 1, which is characterized in that use heating roller
The method of set and cooling of central carries out elastic conjunction, specifically comprises the following steps:
Step 1, the first roller set (1), the second roller set (2) and third roller set (3) are heated to 220~250 DEG C and kept the temperature；
Step 2, the first mandrel (4) surface is dipped into -70~-90 DEG C in liquid nitrogen, then the second end of the first mandrel (4) is packed into
In the first end of first roller set (1)；Second mandrel (5) surface is dipped into -70~-90 DEG C in liquid nitrogen, then the second mandrel (5)
First end be packed into the first roller set (1) second end in；Second group of bearing assembly is installed in the middle part of the second mandrel (5), second
The first water guide set (8) is installed in mandrel (5) second end end, then by the first end cap of the second roller set (2) under keeping warm mode the
In the second end of two mandrels (5)；Third mandrel (6) surface is dipped into -70~-90 DEG C in liquid nitrogen, then by third mandrel (6)
First end be packed into the second roller set (2) second end in；By the first end cap of the third roller set (3) under keeping warm mode in third core
In the second end of axis (6), and the second water guide set (9) is installed in the second end end of third mandrel (6)；By the 4th mandrel (7) table
Face is dipped into -70~-90 DEG C in liquid nitrogen, is then packed into the first end of the 4th mandrel (7) in the second end of third roller set (3)；
Step 3, the 4th group of axis in first group of bearing assembly and the 4th mandrel (7) second end is completed in the first mandrel (4) first end
The assembly of bearing assembly.
8. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 7, which is characterized in that in step 2, first
First roller set (1) is fixed in tooling vertically, the first mandrel (4) is packed into the first roller set (1), then the first roller set (1) is reversed
It is fixed in tooling, then carries out subsequent installation.
9. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 7, which is characterized in that in step 2, the
After two mandrels (5) installation, give the first roller set (1) both ends logical annular cold air；After third mandrel (6) installation, the second roller set (2) is given
The logical annular cold air in both ends, leads to cold air to the bearing block lubrication hole in second group of bearing assembly；After the installation of 4th mandrel (7),
It gives third roller set (3) both ends logical annular cold air, leads to cold air to the bearing block lubrication hole in third group bearing assembly.
10. the installation method of the short mandrel Continuous Casting Rolls of elastic conjunction according to claim 1, which is characterized in that roller set and core
Magnitude of interference between axis is 0.41~0.45mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910147615.XA CN109773148B (en) | 2019-02-27 | 2019-02-27 | Installation method of interference fit short mandrel continuous casting roll |
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| CN201910147615.XA CN109773148B (en) | 2019-02-27 | 2019-02-27 | Installation method of interference fit short mandrel continuous casting roll |
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| CN109773148B CN109773148B (en) | 2020-10-09 |
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| CN115319453A (en) * | 2022-05-30 | 2022-11-11 | 中钢集团西安重机有限公司 | Installation method of free roller of continuous casting machine |
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| CN113560512A (en) * | 2021-08-02 | 2021-10-29 | 常州宝菱重工机械有限公司 | Continuous casting roll and method for assembling the same |
| CN115319453A (en) * | 2022-05-30 | 2022-11-11 | 中钢集团西安重机有限公司 | Installation method of free roller of continuous casting machine |
| CN115319453B (en) * | 2022-05-30 | 2024-01-09 | 中钢集团西安重机有限公司 | Installation method of free roller of continuous casting machine |
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| CN109773148B (en) | 2020-10-09 |
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