CN105750332B - A kind of eight segmentation tube rolling roll shapes and preparation method thereof - Google Patents
A kind of eight segmentation tube rolling roll shapes and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
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Abstract
The present invention relates to non-ferrous metal, ferrous metal calendering formation oblique roll process, rolling deformation vestibule roll shape field is mainly concerned with, especially a kind of eight segmentations tube rolling roll shape and preparation method thereof.A kind of eight segmentation tube rolling roll shapes, the center of tube rolling roll shape is provided with axis hole, the 1200mm of tube rolling roll shape external diameter 1000, body of roll overall length 1000mm, the body of roll is broadly divided into approach cone and outlet cone, approach cone includes four roll surface angles, outlet cone includes four roll surface angles, the roll surface of roll is always divided into eight intervals, pass through eight segmentation roll shapes of present invention design processing, roll can be caused more reasonably to be deformed to rolled piece in the operation of rolling, roll toughness, the technical requirements of wear-resisting aspect are improved, while improving the combination property and service life of roll；After such technical scheme, roll possesses high intensity, high-wearing feature, high tenacity, improves the thermal fatigue resistance energy of roll, and simple and convenient processing method.
Description
Technical field
The present invention relates to non-ferrous metal, ferrous metal calendering formation oblique roll process, rolling deformation vestibule roller is mainly concerned with
V-neck V domain, especially a kind of eight segmentations tube rolling roll shape and preparation method thereof.
Background technology
To meet product quality, the demand of market development is applicable, Limit specifications product is constantly developed, opened up newly
Market segment, adapts to the calendering formation of non-ferrous metal, devises eight segmentation roll profiles.Being designed to of the roll shape meets big chi
The production of very little thin-walled specification product, product D/S can reach more than 40, range of product size 180 ~ 377mm of Φ, 7 ~ 120mm of wall thickness,
The product coverage of this production line is improved, the technique is possessed production more specifications, the series of products of more materials
Ability.The design of the eight segmentations tube rolling function roll shape, makes original product outside diameter schedule increase 96 kinds by original 28 kinds
Specification, reduces integrated cost, and rolling material is strided forward from rolling ferrous metal to non-ferrous metal field.
The content of the invention
To lift the comprehensive benefit of production line, meet the market requirement, improve the product coverage of this production line, give birth to it
Production. art possesses the specification series product that production is more crossed, and reduces integrated cost, the invention provides a kind of eight segmentations tube rolling roller
Type and preparation method thereof.
A kind of eight segmentation tube rolling roll shapes, the center of tube rolling roll shape is provided with axis hole, tube rolling roll shape external diameter 1000-1200mm, roller
Body overall length 1000mm, the body of roll is broadly divided into approach cone and outlet cone, and approach cone includes four roll surface angles, and outlet cone includes
Four roll surface angles, the roll surface of roll is always divided into eight intervals, is followed successively by：
Approach cone I areas, for ensureing that operation of rolling hollow billet smoothly bites, chamfer radius are 40mm, roll entrance face roller
Face angle is 9 °, and length is 165mm；Approach cone II areas roll surface angle is 7 °, and length is 165mm；The area of approach cone III（Roll surface angle is
3.25 °, length is 85mm；Wall-thickness reduction zone roll surface angle is 4.5 °, and length is 45mm；3.4 ° of Runout area roll surface angle, length is 220mm；
2 ° of outlet cone I areas roll surface angle, length be 150mm；2.25 ° of outlet cone II areas roll surface angle, length is 100mm；The area of outlet cone III
4 ° of roll surface angle, length is 70mm, and chamfer radius are 15mm.
A kind of preparation method of eight segmentations tube rolling roll shape, is comprised the technical steps that：
A. the steel blank of mixing is put into heat in electric furnace and melted；The steel blank percent composition of mixing is：C：2.9-
3.2、W：0.9-1.3、Mo：4.3-6.8、V：4.6-5.7、Cr：11.41-12.9、Al:0.3-0.8、Ni:1.4-1.5、Co:
8.8-10.5、Nb:0.1-0.35、Ti:0.3-0.8、Ce:0.5-0.7、Zr:0.08-0.23、Si<0.7、Mn<1.4、S<0.07、
P<0.03rd, remaining is Fe；
B.3-5h it is interior, furnace temperature is ramped up 1500-1595 DEG C, REB composite modifiers are added, and be sufficiently stirred for
It is even, in 1-2h, furnace temperature is uniformly down to 1400-1495 DEG C, REB composite modifiers are added again, and stir；
Described REB composite modifiers are RE and B mixture, wherein, RE≤2.0wt%, B≤0.05wt%；
C. adjustment liquid steel temperature is 1430-1480 DEG C, starts centrifuge, and it is 800rpm-l000rpm to make its rotating speed；By steel
Water
It is poured into casting mold, pouring molten steel is finished after 40-55min, closes centrifuge, strand is taken out from casting mold and is directly entered
Furnace annealing processing；
D. annealing treating process is：The heat-treatment furnace that strand is not less than 250 DEG C with temperature is heated to 670-720 DEG C of insulation
2h-3h, then proceedes to be heated to 980-1010 DEG C of insulation 5-7h, and 1-3h is furnace-cooled to 750-815 DEG C, then proceedes to be heated to 920-
970 DEG C of insulations 3-5h, 1-3h are furnace-cooled to room temperature；
E. Quenching Treatment is carried out after roughing, quenching processing technology is, to 1260-1280 DEG C, to be incubated 3-5h with stove heat,
Then oil quenching, carries out temper after quenching, and temper technique is, to 620-650 DEG C, to be incubated 5-7h with stove heat, and stove is cold,
Then 610-630 DEG C is again heated to, is finished after being incubated 5-7h, air cooling, temper, obtains dimensional accuracy and surface light
The satisfactory roll of cleanliness.
Compared with prior art, beneficial effects of the present invention are：
First, the advantage of configuration aspects of the present invention：
1. the eight segmentation tube rolling roll shapes of the present invention, total design principle is two parts, entrance and outlet section are mainly to roll
Basic principle processed, eight segmentation tube rollings with roll design on this basis, by the two active sections of entrance and outlet section again it is thin
It is divided into four sections, causes entrance exit section to distributed eight active sections in the design of the whole body of roll.So make hollow forging same
Contact tangent plane in the case of rolling linear velocity with roll more rationally, more effectively, more fully improves the utilization of roll barrel
Rate, makes roll profile more adapt to the mobility of flow of metal.
2. the eight segmentation tube rolling roll shapes of the present invention, improve roll surface precision, add service life, while solving original
The problem of fault rate of mechanism is high, Rolling failure rate is reduced to 1 percent by original 3 percent, it is ensured that production operation
Continuity, it is to avoid some roll card phenomenon, have ensured rolling stability in process of production, it is ensured that the rolling essence of product
Degree, improves production operation efficiency.
3. the eight segmentation tube rolling roll shapes of the present invention, improve the flexibility of organization of production, it is possessed rolling coloured gold
Category, the ability of ferrous metal color；Roll is the core hot tool of rolling vestibule during calendering formation, the eight segmentations tube rolling roll shape
Design application technique is produced various resource equipment high alloys, drilling at the sea alloy, tubing and casing, line pipe, titanium zirconium hafnium
The seamless pipe series of products such as niobium and its compo pipe.
4. the eight segmentation tube rolling roll shapes of the present invention, improve quality of the product during processing and manufacturing, improve and optimizate
The mobility of metal during pyroplastic deformation, enhances the stability of the operation of rolling；And ensure during pipe is thrown smoothly
Dish out hollow forging, the physical dimension and quality that the roll design of roll is molded to hollow forging serve vital effect.
2nd, the advantage in terms of processing method of the present invention：
By the present invention design processing eight segmentation roll shapes, can cause roll in the operation of rolling to rolled piece more reasonably
Deformation, improves roll toughness, the technical requirements of wear-resisting aspect, while improving the combination property and service life of roll；
After such technical scheme, roll possesses high intensity, high-wearing feature, high tenacity, improves the cold-and-heat resistent fatigue of roll
Performance, and simple and convenient processing method.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the Temperature-time graph of relation of preparation method of the present invention；
In figure, L1, the area of outlet cone III, L2, outlet cone II areas, L3, outlet cone I areas, L4, Runout area, L5, wall-thickness reduction zone, L6,
The area of approach cone III, L7, approach cone II areas, L8, approach cone I areas；1st, outlet cone, 2, approach cone.
Embodiment
Embodiments herein is described in detail below in conjunction with accompanying drawing, but the application can be defined by the claims
Implement with the multitude of different ways of covering.The accompanying drawing for constituting the part of the application is used for providing the further reason to the application
Solution, the schematic description and description of the application is used to explain the application, does not constitute the improper restriction to the application.
A kind of eight segmentation tube rolling roll shapes, the center of roll profile is provided with axis hole, and roll external diameter 1000-1200mm, the body of roll is total
Long 1000mm, the body of roll is broadly divided into 1 two cone angles of approach cone 2 and outlet cone, wherein, the long 540mm of approach cone 2, outlet cone 1 is grown
460mm。
Approach cone 2 is subdivided into four roll surface angles, and outlet cone 1 has also segmented four roll surface angles, and the roll surface of roll is total
Eight intervals are divided into, approach cone I area L8, approach cone II area L7, the area L6 of approach cone III, wall-thickness reduction zone L5, Runout area is sequentially provided with
L4, outlet cone I area L3, outlet cone II area L2, the area L1 of outlet cone III.
Wherein, approach cone I areas L8 devises chamfering, and chamfer radius are 40mm, ensures that operation of rolling hollow billet smoothly bites, enters
Prostomum I area L8 roll surfaces angle is 9 °, L8 length dimensions are 165mm.
Approach cone II area L7 roll surfaces angle is 7 °, and L7 length is 165mm；The area L6 roll surfaces angle of approach cone III is 3.25 °, L6 length
For 85mm；Wall-thickness reduction zone L5 roll surfaces angle is 4.5 °, and wall-thickness reduction zone L5 length is 45mm；3.4 ° of Runout area L4 roll surfaces angle, Runout area L4 length
Spend for 220mm；2 ° of outlet cone I area L3 roll surfaces angle, outlet cone I area L3 length is 150mm；Outlet cone II area L2 roll surfaces angle
2.25 °, outlet cone II areas L2 length is 100mm；4 ° of the area L1 roll surfaces angle of outlet cone III, the area L1 fillet area length dimensions of outlet cone III
For 70mm, while the chamfer radius of the area L1 of outlet cone III designs are 15mm.
Basic functional principle of the roll of pipe mill in the operation of rolling：Bite, stable rolling, three phases of dishing out, it is first
Hollow billet smoothly biting in arrival end was ensured before this, and roll makes body bite and be rotationally advancing, and is caused during stable rolling
Body subtracts wall horizontal Longitudinal extending simultaneously.
Embodiment 1
This tube rolling roll shape is always divided into eight active sections, and the angle of each active section is respectively by Way out：First
Section L1 is 4 °, second segment L2 be 2 ° of 30`, the 3rd section of L3 be 2 °, the 4th section of L4 be that 3 ° of 45`, the 5th section of L5 are 4.5 °, the 6th section of L6
It is that 7 ° of the 8th section of L8 are 9 ° for 3 ° of 30`, the 7th section of L7, each angle serves different in the operation of rolling to the hollow forging of rolling
Rolling is acted on.From Way in every section of effect realize to hollow billet it is normal bite, body compression, body rotation,
Extend laterally, Longitudinal extending serves to body and subtracts wall, Jun Bi, expanding, equal outer surface and return circle, hollow forging of finally dishing out to complete to roll
System.Metal is more reasonably caused to complete roll forming, tube rolling roller of the invention in vestibule interval by a series of rolling deformation
Type has rolling accuracy high, the stable practical characteristic of rolling, is that rolling deformation ensures the essential core of product quality.
A kind of preparation method of eight segmentations tube rolling roll shape, is comprised the technical steps that：
A. the steel blank of mixing is put into heat in electric furnace and melted；The steel blank percent composition of mixing is：C：2.9-
3.2、W：0.9-1.3、Mo：4.3-6.8、V：4.6-5.7、Cr：11.41-12.9、Al:0.3-0.8、Ni:1.4-1.5、Co:
8.8-10.5、Nb:0.1-0.35、Ti:0.3-0.8、Ce:0.5-0.7、Zr:0.08-0.23、Si<0.7、Mn<1.4、S<0.07、
P<0.03rd, remaining is Fe.
B.3-5h it is interior, furnace temperature is ramped up 1500-1595 DEG C, REB composite modifiers are added, and be sufficiently stirred for
It is even, in 1-2h, furnace temperature is uniformly down to 1400-1495 DEG C, REB composite modifiers are added again, and stir；
REB composite modifiers are RE and B mixture, wherein, RE≤2.0wt%, B≤0.05wt%.
C. adjustment liquid steel temperature is 1430-1480 DEG C, starts centrifuge, and it is 800rpm-l000rpm to make its rotating speed；By steel
Water is poured into casting mold, and pouring molten steel is finished after 40-55min, closes centrifuge, and strand is taken out from casting mold and directly enters furnace annealing
Processing；
D. annealing treating process is：The heat-treatment furnace that strand is not less than 250 DEG C with temperature is heated to 670-720 DEG C of insulation
2h-3h, then proceedes to be heated to 980-1010 DEG C of insulation 5-7h, and 1-3h is furnace-cooled to 750-815 DEG C, then proceedes to be heated to 920-
970 DEG C of insulations 3-5h, 1-3h are furnace-cooled to room temperature；
E. Quenching Treatment is carried out after roughing, quenching processing technology is, to 1260-1280 DEG C, to be incubated 3-5h with stove heat,
Then oil quenching, carries out temper after quenching, and temper technique is, to 620-650 DEG C, to be incubated 5-7h with stove heat, and stove is cold,
Then 610-630 DEG C is again heated to, is finished after being incubated 5-7h, air cooling, temper, obtains dimensional accuracy and surface light
The satisfactory roll of cleanliness.
Embodiment 2
Tube rolling roll shape structure is while embodiment 1, preparation method is comprised the technical steps that：
A. the steel blank of mixing is put into heat in electric furnace and melted；The steel blank percent composition of mixing is：C：2.9, W：
0.9, Mo：4.3, V：4.6, Cr：11.41, Al:0.3,Ni:1.4,Co:8.8,Nb:0.1,Ti:0.3,Ce:0.5,Zr:0.08,
Si：0.7, Mn：1.4, S：0.07, P：0.03, remaining is Fe.
B.3h it is interior, furnace temperature is ramped up to 1500 DEG C, REB composite modifiers are added, and stir, 1h
It is interior, furnace temperature is uniformly down to 1400 DEG C, REB composite modifiers are added again, and stir；REB composite inoculatings
Agent is RE and B mixture, wherein, RE is 1.0wt%, and B is 0.01wt%.
C. adjustment liquid steel temperature is 1430 DEG C DEG C, starts centrifuge, and it is 800rpm to make its rotating speed；By pouring molten steel to casting mold
In, pouring molten steel is finished after 40min, closes centrifuge, and strand is taken out from casting mold and directly enters furnace annealing processing；
D. annealing treating process is：Strand is heated to 670 DEG C of insulation 2h with the heat-treatment furnace of 250 DEG C of temperature, then proceedes to
980 DEG C of insulation 5h are heated to, 1h is furnace-cooled to 750 DEG C, then proceed to be heated to 920 DEG C of insulations 3h, 1h to be furnace-cooled to room temperature；
E. Quenching Treatment is carried out after roughing, quenching processing technology is, to 1260 DEG C, to be incubated 3h with stove heat, then oily
Quench, temper is carried out after quenching, temper technique is, to 620 DEG C, to be incubated 5h with stove heat, and stove is cold, is then again heated to
610 DEG C, 5h is incubated, air cooling is finished after temper, obtains dimensional accuracy and surface smoothness is satisfactory rolls
Roller.
Embodiment 3
Tube rolling roll shape structure is while embodiment 1, preparation method is comprised the technical steps that：
A. the steel blank of mixing is put into heat in electric furnace and melted；The steel blank percent composition of mixing is：C：3.2, W：
1.3, Mo：6.8, V：5.7, Cr：12.9, Al:0.8,Ni:1.5,Co:10.5,Nb:0.35,Ti:0.8,Ce:0.7,Zr:0.23,
Si：0.7, Mn：1.4, S：0.07, P：0.03, remaining is Fe.
B.5h it is interior, furnace temperature is ramped up to 1595 DEG C, REB composite modifiers are added, and stir, 2h
It is interior, furnace temperature is uniformly down to 1495 DEG C, REB composite modifiers are added again, and stir；REB composite inoculatings
Agent is RE and B mixture, wherein, RE：2.0wt%, B：0.05wt%.
C. adjustment liquid steel temperature is 1480 DEG C, starts centrifuge, and it is l000rpm to make its rotating speed；By pouring molten steel to casting mold
In, pouring molten steel is finished after 55min, closes centrifuge, and strand is taken out from casting mold and directly enters furnace annealing processing；
D. annealing treating process is：The heat-treatment furnace that strand is not less than 250 DEG C with temperature is heated to 720 DEG C of insulation 3h, so
After continue to be heated to 1010 DEG C of insulations 7h, 3h and be furnace-cooled to 815 DEG C, then proceed to be heated to 970 DEG C of insulations 5h, 3h to be furnace-cooled to room
Temperature；
E. Quenching Treatment is carried out after roughing, quenching processing technology is, to 1280 DEG C, to be incubated 5h with stove heat, then oily
Quench, temper is carried out after quenching, temper technique is, to 650 DEG C, to be incubated 7h with stove heat, and stove is cold, is then again heated to
630 DEG C, 7h is incubated, air cooling is finished after temper, obtains dimensional accuracy and surface smoothness is satisfactory rolls
Roller.
Test effect：
Roll in embodiment 1-3 and the common roll bought are taken three respectively, 300 DEG C, 500 are separately heated to
DEG C, 700 DEG C, hardness test is carried out to the roll in embodiment 1-3 and the common roll bought,
| Hardness test HRC | Common roll | The roll of embodiment 1 | The roll of embodiment 2 | The roll of embodiment 3 |
| 300℃ | 47 | 59 | 58 | 60 |
| 500℃ | 41 | 51 | 52 | 53 |
| 700℃ | 36 | 46 | 47 | 48 |
It is as shown in the table for numerical value obtained by test.
By the way that shown in upper table, we can significantly find out, the roll processed is made by the inventive method, it is different
In temperature range, in terms of intensity, obvious advantage is respectively provided with.
It should be noted last that, above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to preferred embodiment, it will be understood by those within the art that, can be right
Technical scheme is modified or equivalent substitution, and without departing from the spirit and scope of technical solution of the present invention, its is equal
It should cover among scope of the presently claimed invention.
Claims (1)
1. a kind of eight segmentations tube rolling roll shape, it is characterised in that the center of tube rolling roll shape is provided with axis hole, tube rolling roll shape external diameter 1000-
1200mm, body of roll overall length 1000mm, the body of roll is broadly divided into approach cone（2）And outlet cone（1）, approach cone（2）Include four rollers
Face angle degree, outlet cone（1）Include four roll surface angles, the roll surface of roll is always divided into eight intervals, is followed successively by：
Approach cone I areas（L8）, for ensureing that operation of rolling hollow billet smoothly bites, chamfer radius are 40mm, roll entrance face roller
Face angle is 9 °, and length is 165mm；
Approach cone II areas（L7）Roll surface angle is 7 °, and length is 165mm；
The area of approach cone III（L6）Roll surface angle is 3.25 °, and length is 85mm；
Wall-thickness reduction zone（L5）Roll surface angle is 4.5 °, and length is 45mm；
Runout area（L4）3.4 ° of roll surface angle, length is 220mm；
Outlet cone I areas（L3）2 ° of roll surface angle, length is 150mm；
Outlet cone II areas（L2）2.25 ° of roll surface angle, length is 100mm；
The area of outlet cone III（L1）4 ° of roll surface angle, length is 70mm, and chamfer radius are 15mm；
The preparation method of the eight segmentations tube rolling roll shape, is comprised the technical steps that：
A. the steel blank of mixing is put into heat in electric furnace and melted；The steel blank percent composition of mixing is：C：3.2, W：1.3,
Mo：6.8, V：5.7, Cr：12.9, Al:0.8, Ni:1.5, Co:10.5, Nb:0.35, Ti:0.8, Ce:0.7, Zr:0.23, Si：
0.7, Mn：1.4, S：0.07, P：0.03, remaining is Fe；
B.5h it is interior, furnace temperature is ramped up to 1595 DEG C, REB composite modifiers are added, and stir, will in 2h
Furnace temperature is uniformly down to 1495 DEG C, REB composite modifiers is added again, and stir；REB composite modifiers are RE
With B mixture, wherein, RE：2.0wt%, B：0.05wt%；
C. adjustment liquid steel temperature is 1480 DEG C, starts centrifuge, and it is l000rpm to make its rotating speed；By pouring molten steel into casting mold, steel
Water is poured after 55min, closes centrifuge, and strand is taken out from casting mold and directly enters furnace annealing processing；
D. annealing treating process is：The heat-treatment furnace that strand is not less than 250 DEG C with temperature is heated to 720 DEG C of insulations 3h, Ran Houji
It is continuous to be heated to 1010 DEG C of insulations 7h, 3h and be furnace-cooled to 815 DEG C, then proceed to be heated to 970 DEG C of insulations 5h, 3h to be furnace-cooled to room temperature；
E. Quenching Treatment is carried out after roughing, quenching processing technology is, to 1280 DEG C, to be incubated 5h, then oil quenching, quenches with stove heat
Temper is carried out after fire, temper technique is, to 650 DEG C, to be incubated 7h with stove heat, and stove is cold, is then again heated to 630 DEG C,
Finished after being incubated 7h, air cooling, temper, obtain dimensional accuracy and the satisfactory roll of surface smoothness.
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| CN114425564B (en) * | 2022-03-09 | 2024-01-12 | 聊城市科环新材料科技有限公司 | Six-section roll shape and three-roller mill for nonferrous metal rolling |
| CN115608784B (en) * | 2022-12-16 | 2023-03-07 | 太原理工大学 | Large length-diameter ratio heterogeneous metal composite thin-walled tube progressive skew rolling composite equipment and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04135004A (en) * | 1990-09-21 | 1992-05-08 | Sumitomo Metal Ind Ltd | Skew rolling method for seamless tube |
| JPH07241608A (en) * | 1994-03-04 | 1995-09-19 | Kawasaki Steel Corp | High expansion rolling method of seamless tube |
| CN2182005Y (en) * | 1994-05-19 | 1994-11-09 | 北京科技大学 | Extender |
| RU2307716C2 (en) * | 2003-05-21 | 2007-10-10 | Сумитомо Метал Индастриз, Лтд. | Method for forming seamless tube |
| CN2899988Y (en) * | 2006-04-29 | 2007-05-16 | 中国科学院金属研究所 | Three roller planet rolling mill roller |
| CN201244596Y (en) * | 2008-05-23 | 2009-05-27 | 郝建庚 | Diagonal rolling tube mill guide plate |
| CN102936681A (en) * | 2012-11-19 | 2013-02-20 | 湖州市银鑫轧辊有限公司 | Method for manufacturing rollers by using high-speed steel |
| CN205732285U (en) * | 2016-05-09 | 2016-11-30 | 鑫鹏源智能装备集团有限公司 | A kind of eight segmentation tube rolling roll shapes |
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