CN208800551U - Roll sleeve and roll - Google Patents
Roll sleeve and roll Download PDFInfo
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- CN208800551U CN208800551U CN201821453589.0U CN201821453589U CN208800551U CN 208800551 U CN208800551 U CN 208800551U CN 201821453589 U CN201821453589 U CN 201821453589U CN 208800551 U CN208800551 U CN 208800551U
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- seamless pipe
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Abstract
The utility model discloses a kind of roll sleeves, comprising: outer working lining, middle composite layer and internal layer seamless pipe, internal layer seamless pipe are prefabricated low-carbon seamless steel pipe, and outer working lining is prefabricated antifriction alloy steel layer；Middle composite layer is that cast-in-place aluminium alloy, thermite and slag former react the molten iron generated with cast-in-place aluminium alloy and outer working lining, internal layer seamless pipe surface layer meet the molten iron that cast-in-place aluminium alloy melts and combine the composite layer to be formed；It is metallurgical bonding between outer working lining, middle composite layer and internal layer seamless pipe three, the length of roll sleeve in axial direction is 0.1m~100m.And disclose a kind of roll including the roll sleeve.By using compound intermediate layer, i.e. when cast-in-place aluminium alloy is cast, thermite and slag former occur thermit reaction with aluminium alloy and generate molten iron, outer working lining inner surface, seamless steel pipe outer surface chance high temperature melting and mutually penetrate at molten iron and cast-in-place aluminium alloy, middle composite layer is collectively formed, to realize the complete metallurgical bonding of outer working lining, internal layer seamless pipe and middle composite layer, it can be realized outer working lining in this way and internal layer seamless pipe be firmly combined.
Description
Technical field
The utility model relates to technique for casting roller field, in particular to a kind of roll sleeve, and including the roller
The roll of set.
Background technique
Roll is most important expendable part in Rolling production, and, also referred to as " mothers of steel ", China produces 80 every year for it
Ten thousand tons or so of roll.Roll used at present is mostly traditional solid roll, and roll sleeve type composite roll is at present only in stick line
Material rolling field is applied.Roll sleeve type composite roll is made of roll shaft and roller set, and roller set is nested in the outside of roll shaft, and by roller
Axis drive is contacted with steel billet, is plastically deformed steel billet.Roller set needs to bear when in use biggish roll-force, simultaneously surface layer
There are biggish sliding frictions between steel billet；Roller set and roll shaft elastic conjunction, internal layer need to transmit the larger torsion of roll shaft offer
Square, therefore the characteristics of composite roll set needs to have " interior tough and outer hard ".
In existing roll alloy, high-wearing feature, high intensity and high tenacity etc. can be had both simultaneously without single material
Complete characteristic needed for roller set.Therefore together by the Material cladding of two kinds of different performances, maximum by double-metal composite technique
The characteristic of two kinds of metals of utilization of limit prepares the main method that high performance bimetallic composite roll set is current roller set preparation.
But since there are biggish difference, seamless pipe tables for the physical and chemical performance of composite roll two composite layer materials of set
Layer is unavoidably there are oxide layer, when being produced using conventional cast combination process, the junction of two composite layers easily occur stomata,
The defects of slag inclusion, loose and layering, reduce the intensity and composite effect of composite layer, make composite roll cover bear it is high-intensitive and
When prolonged rolling work, easily occur to loosen, crack or chip off-falling, or even fracture.
Therefore develop new combination process, prepare it is compound closely, the high high-performance composite roll set of bond strength is to roll sleeve type
The popularization and application of composite roll are of great significance.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of roll sleeve and a kind of manufacturers of roll sleeve
Method and roll with the roll sleeve, the manufacturing method of the roll sleeve make the internal layer seamless pipe of roll sleeve and outer layer resistance to
The generation for the defects of merging the complete metallurgical bonding of layer gold, while can reducing junction stomata, slag inclusion, has roll sleeve
Outer hard interior tough characteristic, to improve the globality and working performance and service life that composite roll covers, and improves roll
Working performance.To solve the above-mentioned problems, a kind of roll sleeve provided by the utility model, its technical solution is as follows:
A kind of roll sleeve of the utility model, the roll sleeve include: outer working lining, middle composite layer and internal layer without
Slit-tube, the internal layer seamless pipe are prefabricated low-carbon seamless steel pipe, and the outer working lining is prefabricated antifriction alloy steel layer.
The middle composite layer be cast-in-place aluminium alloy, thermite and slag former reacted with cast-in-place aluminium alloy generation molten iron with
And the outer working lining, internal layer seamless pipe surface layer meet the molten iron that cast-in-place aluminium alloy melts and combine the composite layer to be formed.Institute
It states for metallurgical bonding between outer working lining, the middle composite layer and the internal layer seamless pipe three, the roll sleeve is along axis
It is 0.1m~100m to the length in direction.
The roll sleeve of the utility model, compared with roll sleeve in the prior art, using compound intermediate layer,
The clay object that one layer of coat thermite and slag former are respectively coated in outer working lining inner surface and the seamless tube outer surface of internal layer,
When cast-in-place aluminium alloy is cast, thermite and slag former and aluminium alloy occur thermit reaction and generate the heat that molten iron is released simultaneously
Can, so that outer working lining inner surface and the fusing of internal layer seamless pipe outer surface part, thus, the outer working lining inner surface of fusing, nothing
Molten iron, the cast-in-place aluminium alloy that seam outer surface of steel tube and thermit reaction generate mutually penetrate into, and middle composite layer is collectively formed, from
And realize the complete metallurgical bonding of outer working lining, internal layer seamless pipe and middle composite layer, can be realized so outer working lining with
The firm connection of internal layer seamless pipe.
As the improvement of the above-mentioned roll sleeve of the utility model, before cast alloys liquid, by the thermite of clay shape and make
Slag agent, which is coated on the outer working lining inner surface, forms outer layer composite coating, and the thermite of clay shape and slag former are coated in
Inner layer composite coating is formed on the seamless tube outer surface of internal layer, aluminium alloy is cast to the inner layer composite coating and the outer layer
Cast-in-place alloy-layer is formed between composite coating；The inner layer composite coating and the outer layer composite coating with a thickness of 0.2mm~
5mm.Wherein, it is anti-with aluminium alloy aluminothermy to occur for outer layer composite coating and inner layer composite coating during aluminium alloy is cast-in-place
It answers and disappears, molten iron generated is combined with aluminium alloy and outer working lining with the molten iron of internal layer seamless pipe surface melting, shape
At firm middle composite layer.
Further, the outer working lining is with a thickness of 20mm~80mm, the middle composite layer with a thickness of 5mm~30mm,
The internal layer seamless pipe is with a thickness of 10mm~50mm.The outer working lining, the middle composite layer, the internal layer seamless pipe three
The ratio between thickness be 3~10:1:1~5.
In this way, inner layer composite coating and outer layer composite coating are designed to reasonable thickness, in the cast-in-place mistake of cast-in-place alloy-layer
Composite coating can either be melted in journey, while melt outer working lining inner surface, internal layer seamless pipe outer surface part, to reach
To the purpose of three's depth metallurgical bonding；If inner layer composite coating and the setting of outer layer composite coating are too thick, it is easy when casting
More dross is generated, metallurgical bonding quality is influenced；If inner layer composite coating and the setting of outer layer composite coating are too thin, up to not
The purpose melted to outer working lining, internal layer seamless pipe surface part.
The utility model also provides a kind of manufacturing method of roll sleeve, the manufacturing method the following steps are included:
Step 1, the wear-resisting alloy steel set for preparing predetermined size are used as outer working lining, and the low-carbon for preparing predetermined size is seamless
Steel pipe goes the dirty and oxidation of working lining inner surface except as noted and the seamless tube outer surface of the internal layer as internal layer seamless pipe
Layer.
The thermite of preset blending ratio and slag former are mixed to form clay shape for step 2, and are uniformly coated on institute
It states the inner surface of outer working lining and forms outer layer composite coating, it is multiple coated in inner layer is formed on the seamless tube outer surface of the internal layer
Close coating, the inner layer composite coating and the outer layer composite coating with a thickness of 0.2mm-5.0mm.
The outer working lining and the internal layer seamless pipe are installed on casting platform by step 3, the outer working lining and
Temperature when the internal layer seamless pipe is installed on the casting platform is controlled at 0 DEG C~500 DEG C.
Melted aluminium alloy is poured into the inner layer composite coating and the compound painting of the outer layer from casting gate by step 4
Cast-in-place alloy-layer is formed in space between layer, temperature when aluminium alloy is cast is controlled at 1300 DEG C~1500 DEG C, aluminium alloy
In casting process, the inner layer composite coating and the outer layer composite coating occur thermit reaction with aluminium alloy and disappear, cast-in-place
Aluminium alloy, the molten iron of thermit reaction generation and the outer working lining, internal layer seamless pipe surface layer meet cast-in-place aluminium alloy fusing
Molten iron combine to form middle composite layer, natural cooling obtains the roll sleeve after the completion of casting.
The manufacturing method of the roll sleeve of the utility model passes through compared with the manufacturing method of roller in the prior art set
The thermit reaction of thermite and slag former and cast-in-place aluminium alloy, molten iron, aluminium alloy and the inside and outside layer surface that thermit reaction generates
The mode that the molten iron of fusing combines manufactures middle composite layer, more deepens in this way, mutually penetrating between three, i.e. metallurgical bonding
More preferably；So that the combination of outer working lining and internal layer seamless pipe is even closer.With it is existing by outer working lining, intermediate layer with
And internal layer seamless pipe is prefabricated assembles again, then the manufacturing method Jing Guo high-temperature process is compared, and the utility model manufacture is rolled
Roll sleeve service life improves 2-3 times, and loosening between layers will not occur substantially in use.
As the improvement of the above-mentioned manufacturing method of the utility model, in step 1, the outer working lining inner surface and described
When removing removing oxide layer, their roughness is controlled in Ra0.2~Ra6.0 for internal layer is seamless tube outer surface.In this way, first, so that
Adhesiveness is more preferable when the thermite and slag former of clay shape are coated to outer working lining inner surface and internal layer seamless tube outer surface, keeps away
Inner layer composite coating is exempted from and the problem of outer layer composite coating is accumulated down in coating procedure；Second, increase outer working lining
Internal surface area and internal layer seamless pipe external surface area, pour into high temperature alloy liquid into inner layer composite coating and the compound painting of outer layer
When gap between layer, part outstanding on outer working lining inner surface and the seamless tube outer surface of internal layer, i.e. roughness can be fast
Fast thawing improves associativity, the globality of internal layer seamless pipe and outer working lining.
Further, in step 2, as the inner layer composite coating and the outer layer composite coating thermite and make
Slag agent includes Al powder, Fe2O3 powder, FeO powder, CaCO3 powder, SiO2 powder, wherein Al powder, Fe2O3 powder, FeO powder, CaCO3 powder,
The weight ratio of SiO2 powder is 1:2~4:0.2~1.0:0.5~2.0:0.5~1.5.In this way, pouring into high temperature alloy liquid
Behind gap between layer composite coating and outer layer composite coating, high temperature can be such that inner layer composite coating and outer layer composite coating melts rapidly
Change concurrent cast alumin(i)um thermal response: 2Al+Fe2O3→2Fe+Al2O3+ 836kJ, reaction generate liquid Fe water, while the heat released
The endosexine of outer working lining and internal layer seamless pipe endosexine can be melted, can preferably realize outer working lining, middle composite layer
It is metallurgical bonding between internal layer seamless pipe three.
Thermite and slag making in step 2, as the inner layer composite coating (21) and the outer layer composite coating (22)
The Al powder of agent, Fe2O3 powder, FeO powder, CaCO3 powder, SiO2 powder partial size be 0.01mm~0.5mm.
The utility model also provides a kind of roll, including the roll sleeve as manufactured by above-mentioned manufacturing method.
The beneficial effect of roll sleeve provided by the utility model is:
By using compound intermediate layer, i.e., one is respectively coated in outer working lining inner surface and the seamless tube outer surface of internal layer
The clay object of layer coat thermite and slag former, in the casting of cast-in-place aluminium alloy, thermite and slag former and aluminium alloy occur
Thermit reaction and the heat energy for generating molten iron while releasing, so that outer working lining inner surface and internal layer seamless pipe outer surface part melt
Change, thus, molten iron, the cast-in-place alloy that outer working lining inner surface, seamless steel pipe outer surface and the thermit reaction of fusing generate
Liquid phase is mutually penetrated into, and middle composite layer is collectively formed, to realize the complete of outer working lining, internal layer seamless pipe and middle composite layer
Metallurgical bonding, can be realized outer working lining in this way and internal layer seamless pipe is firmly combined.
The manufacturing method of the roll sleeve of the utility model, the aluminothermy by thermite and slag former and cast-in-place aluminium alloy are anti-
It answers, the mode that the molten iron of molten iron, aluminium alloy and ectonexine surface melting that thermit reaction generates combines is intermediate multiple to manufacture
Layer is closed, is more deepened in this way, mutually being penetrated between three, i.e. metallurgical bonding is more preferable；So that outer working lining and internal layer seamless pipe
Combination it is even closer.It is assembled again with existing by outer working lining, intermediate layer and internal layer seamless pipe are prefabricated, is then passed through
The manufacturing method for crossing high-temperature process is compared, and the roll sleeve service life of the utility model manufacture improves 2-3 times, is being used
Substantially loosening between layers will not occur in journey.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the vertical section structure schematic diagram of the utility model first embodiment roll sleeve；
Fig. 2 is the enlarged diagram of middle composite layer in Fig. 1；
Fig. 3 is the structural schematic diagram of the manufacturing method processing roll roller set of the utility model second embodiment roll sleeve.
It is marked in figure as follows:
The outer working lining of 1-；2- middle composite layer；21- inner layer composite coating；22- outer layer composite coating；The cast-in-place alloy of 23-
Layer；3- internal layer seamless pipe；4- casting platform；5- casting gate.
Specific embodiment
In order to make those skilled in the art more fully understand the technical scheme in the embodiment of the utility model, and make this reality
Can be more obvious and easy to understand with novel above objects, features, and advantages, with reference to the accompanying drawing to the specific reality of the utility model
The mode of applying is further described.
It should be noted that being used to help understand the utility model for the explanation of these embodiments, but not
Constitute the restriction to the utility model.In addition, technology involved in the various embodiments of the present invention described below
Feature can be combined with each other as long as they do not conflict with each other.
Embodiment one
Please refer to Fig. 1 and Fig. 2, a kind of roll sleeve of the present embodiment, which includes: outer working lining 1, intermediate multiple
Layer 2 and internal layer seamless pipe 3 are closed, internal layer seamless pipe 3 is prefabricated low-carbon seamless steel pipe, and outer working lining 1 is prefabricated antifriction alloy
Steel layer；Middle composite layer 2 is that cast-in-place aluminium alloy, thermite and slag former react the molten iron generated and outer work with cast-in-place aluminium alloy
Make layer 1,3 surface layer of internal layer seamless pipe meets the molten iron that cast-in-place aluminium alloy melts and combines the composite layer to be formed；Outer working lining 1, centre
It is metallurgical bonding between 3 three of composite layer 2 and internal layer seamless pipe, the length of roll sleeve in axial direction is 0.1m~100m.
Wherein, before cast alloys liquid, the thermite of clay shape and slag former are coated in shape on outer 1 inner surface of working lining
At outer layer composite coating 22, the thermite of clay shape and slag former are coated in formation inner layer on 3 outer surface of internal layer seamless pipe and answered
Coating 21 is closed, aluminium alloy, which is cast between inner layer composite coating 21 and outer layer composite coating 22, forms cast-in-place alloy-layer 23；Inner layer
Composite coating 21 and outer layer composite coating 22 are with a thickness of 0.2mm~5mm.
As preferred embodiment, outer working lining 1 with a thickness of 20mm~80mm, middle composite layer 2 with a thickness of 5mm~
30mm, internal layer seamless pipe 3 is with a thickness of 10mm~50mm.It is highly preferred that outer working lining 1 is with a thickness of 50mm~70mm, it is intermediate compound
Layer 2 is with a thickness of 10mm~20mm, and internal layer seamless pipe 3 is with a thickness of 20mm~30mm.Wherein, inner layer composite coating 21 and outer layer are compound
Coating 22 is with a thickness of 0.2mm~5mm；Preferably 1mm~3mm.
As most preferred embodiment, the ratio between outer working lining 1, middle composite layer 2, thickness of 3 three of internal layer seamless pipe
For 3~10:1:1~5.
Embodiment two
Fig. 2 and Fig. 3, a kind of manufacturing method of roll sleeve of the present embodiment are please referred to, which includes following step
It is rapid:
Step 1, the wear-resisting alloy steel set for preparing predetermined size are used as outer working lining 1, and the low-carbon for preparing predetermined size is seamless
Steel pipe is as internal layer seamless pipe 3, the dirty and oxide layer of 3 outer surface of 1 inner surface of working lining and internal layer seamless pipe except going.
The thermite of preset blending ratio and slag former are mixed to form clay shape, and are evenly coated with outside by step 2
The inner surface of working lining 1 and form outer layer composite coating 22, coated in forming the compound painting of inner layer on 3 outer surface of internal layer seamless pipe
Layer 21, inner layer composite coating 21 and outer layer composite coating 22 with a thickness of 0.2mm-5.0mm.
Outer working lining 1 and internal layer seamless pipe 3 are installed on casting platform 4 by step 3, and outer working lining 1 and internal layer are seamless
Temperature when pipe 3 is installed on casting platform 4 is controlled at 0 DEG C~500 DEG C.
Melted aluminium alloy is poured into inner layer composite coating 21 and outer layer composite coating 22 from casting gate 5 by step 4
Between space in and form cast-in-place alloy-layer 23, temperature control when aluminium alloy is cast is at 1300 DEG C~1500 DEG C, aluminium alloy
In casting process, inner layer composite coating 21 and outer layer composite coating 22 occur thermit reaction with aluminium alloy and disappear, cast-in-place alloy
The molten iron that the molten iron and outer working lining 1,3 surface layer of internal layer seamless pipe that liquid, thermit reaction generate meet cast-in-place aluminium alloy fusing is mutually tied
Conjunction forms middle composite layer 2, and natural cooling obtains the roll sleeve after the completion of casting.
Preferably, inner layer composite coating 21 and outer layer composite coating 22 with a thickness of 0.5mm-2.0mm；Outer 1 He of working lining
Temperature when internal layer seamless pipe 3 is installed on casting platform 4 is controlled at 150 DEG C~300 DEG C；Temperature control when aluminium alloy is cast
At 1350 DEG C~1450 DEG C.
As further preferred embodiment, in step 1, outer 1 inner surface of working lining and the internal layer seamless pipe 3
When removing removing oxide layer, their roughness is controlled in Ra0.2~Ra6.0 for outer surface.
In step 2, thermite and slag former as inner layer composite coating 21 and outer layer composite coating 22 include Al powder,
Fe2O3 powder, FeO powder, CaCO3 powder, SiO2 powder, wherein Al powder, Fe2O3 powder, FeO powder, CaCO3 powder, SiO2 powder weight ratio
For 1:2~4:0.2~1.0:0.5~2.0:0.5~1.5.
In step 2, the Al powder of thermite and slag former as inner layer composite coating 21 and outer layer composite coating 22,
Fe2O3 powder, FeO powder, CaCO3 powder, SiO2 powder partial size be 0.01mm~0.5mm.It theoretically can be by controlling Al powder, Fe2O3
Powder, FeO powder, CaCO3Powder, SiO2The ratio of powder and the granular size control inner layer composite coating 21 and outer layer composite coating of powder
22 reaction speed and temperature, to realize that the reaction time of middle composite layer 2 can match with aluminium alloy casting rate.
Embodiment three
A kind of roll of the present embodiment, including roll sleeve described in embodiment one；Alternatively, including described in embodiment two
Roll sleeve manufactured by manufacturing method.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and the highlights of each of the examples are differences from other embodiments.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to institute
The embodiment of description.To those skilled in the art, in the case where not departing from the principles of the present invention and spirit
A variety of change, modification, replacement and modification that these embodiments carry out are still fallen within and are within the protection scope of the utility model.
Claims (5)
1. a kind of roll sleeve, which is characterized in that the roll sleeve includes: outer working lining (1), middle composite layer (2) and interior
Layer seamless pipe (3), the internal layer seamless pipe (3) are prefabricated low-carbon seamless steel pipe, and the outer working lining (1) is prefabricated wear-resisting
Alloy steel layer；
The middle composite layer (2) be cast-in-place aluminium alloy, thermite and slag former reacted with cast-in-place aluminium alloy generation molten iron with
And the outer working lining (1), the internal layer seamless pipe (3) surface layer meet the fusing of cast-in-place aluminium alloy molten iron combine to be formed it is compound
Layer；
It is metallurgical bonding between the outer working lining (1), the middle composite layer (2) and the internal layer seamless pipe (3) three；
The length of the roll sleeve in axial direction is 0.1m~100m.
2. roll sleeve according to claim 1, which is characterized in that before cast alloys liquid, by the thermite of clay shape
Be coated on outer working lining (1) inner surface with slag former and form outer layer composite coating (22), by the thermite of clay shape and
Slag former be coated in internal layer seamless pipe (3) outer surface on formed inner layer composite coating (21), aluminium alloy be cast to it is described in
Cast-in-place alloy-layer (23) are formed between layer composite coating (21) and the outer layer composite coating (22)；
The inner layer composite coating (21) and the outer layer composite coating (22) are with a thickness of 0.2mm~5mm.
3. roll sleeve according to claim 1, which is characterized in that the outer working lining (1) with a thickness of 20mm~80mm,
The middle composite layer (2) is with a thickness of 5mm~30mm, and the internal layer seamless pipe (3) is with a thickness of 10mm~50mm.
4. roll sleeve according to claim 3, which is characterized in that the outer working lining (1), the middle composite layer
(2), the ratio between thickness of internal layer seamless pipe (3) three is 3~10:1:1~5.
5. a kind of roll, which is characterized in that including the roll sleeve as described in Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453589.0U CN208800551U (en) | 2018-09-06 | 2018-09-06 | Roll sleeve and roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453589.0U CN208800551U (en) | 2018-09-06 | 2018-09-06 | Roll sleeve and roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208800551U true CN208800551U (en) | 2019-04-30 |
Family
ID=66235977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821453589.0U Active CN208800551U (en) | 2018-09-06 | 2018-09-06 | Roll sleeve and roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208800551U (en) |
-
2018
- 2018-09-06 CN CN201821453589.0U patent/CN208800551U/en active Active
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