CN109759449A - A kind of single chassis continuously prepares multistage segment difference slab roll and double-roll rolling mill and technique - Google Patents
A kind of single chassis continuously prepares multistage segment difference slab roll and double-roll rolling mill and technique Download PDFInfo
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- CN109759449A CN109759449A CN201910132692.8A CN201910132692A CN109759449A CN 109759449 A CN109759449 A CN 109759449A CN 201910132692 A CN201910132692 A CN 201910132692A CN 109759449 A CN109759449 A CN 109759449A
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Abstract
A kind of single chassis continuously prepares multistage segment difference slab roll, including roll neck and the body of roll, and the body of roll is divided into the part n circumferentially according to number of stages n, the radius of each section be respectively R1, R2 ..., Rn, and R1 > R2 > Rn, n >=2；Multistage segment difference slab technique is continuously prepared the present invention also provides the double-roll rolling mill with the roll and using the single chassis of the double-roll rolling mill, strip is passed through into milling train, gained difference slab strip is sheared, prepares different poor plate products by the poor slab for producing specific standard；The present invention significantly reduces the requirement of poor thick slab production plants, it can be achieved that aluminium alloy difference slab continuous operations, the high-performance aluminium alloy difference slab of production have the prospect of substitution steel difference slab and steel tailor welded, has bright prospects in fields such as automotive light weight technologies.
Description
Technical field
The invention belongs to metal material rolling technical field, in particular to a kind of single chassis continuously prepares multistage segment difference slab
Roll and double-roll rolling mill and technique.
Background technique
Currently, automotive light weight technology obtains the extensive concern of international community, people are dedicated to dropping by various techniques and technology
The weight of low automobile.Because automobile energy consumption will be greatly reduced with the reduction of vehicle weight.
Vehicle weight is reduced, one way in which is using high tough aluminum alloy materials substitution steel plate.Relative to steel
For, the density of aluminium alloy is greatly reduced.However, aluminium alloy strips are needed in automobile preparation process using special welding side
Formula or riveting method, improve manufacturing cost.
Varying-thickness rolling can be used to prepare tapering plate, be mainly used to produce steel section rolled-material at present, use this
The tailor welded for substituting market has important prospect in automotive field lightweight preparation.Varying-thickness rolling can exempt band it
Between welding, be of great significance for aluminium alloy automobile plate.However, poor slab currently on the market is by high-precision
The controllable milling train production of thickness is spent, wherein high-precision thickness feedback system is more expensive, in addition, in order to adapt to the accurate control of thickness
System, many hydraulic components are needed from external import, while expensive.
Also, at present using the poor slab of milling method preparation, due to the symmetry of rolling mill practice, product is along rolling
Center line is symmetrical above and below.It is the only way which must be passed of automobile industry development for steel with aluminium, using the aluminium of rolling mill practice preparation high quality
Alloy difference slab can reduce roll gap, if it is possible to produce asymmetrical poor slab, will enrich poor slab type, meet vapour
The personalized designs and manufacture of turner industry.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of single chassis continuously prepare it is multistage
Segment difference slab roll and double-roll rolling mill and technique, can prepare the multistage aluminium alloy difference slab of high quality, and can further prepare
Multistage aluminium alloy difference slab, the plate would be possible to for manufacturing auto parts and components.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of single chassis continuously prepares multistage segment difference slab roll, including roll neck and the body of roll, which is characterized in that the body of roll
Circumferentially according to number of stages n, be divided into the part n, the radius of each section be respectively R1, R2 ..., Rn, and R1 > R2 > Rn, n >=
2。
Preferably, the radius of the roll neck is R, and R < Rn.
Preferably, the n=2 or n=3.
Preferably, the barrel length range 100mm~1500mm, roll neck length range 100mm~600mm, body of roll table
Face is provided with coating protection.
Preferably, the part the n is a circulation, and a roll includes N number of circulation, N >=1, and the 1st in each circulation
Point, part 2 ..., the n-th part put in order it is identical, the part 1, part 2 ..., corresponding to the n-th part
Radian determine that the present invention also provides one kind according to each stage length standard of poor plate product and continuously made with the single chassis
The double-roll rolling mill of standby multistage segment difference slab roll, upper roller and lower roll are all made of the roll, and up-down rollers are full symmetric, it is described on
Roll gap between roller and lower roll is arranged using at roll barrel radius R1 as setting, is equal to the minimum thickness of rolled piece product.
The present invention also provides a kind of single chassis using the double-roll rolling mill continuously to prepare multistage segment difference slab technique, will
Strip is produced the poor slab of specific standard, gained difference slab strip is sheared by milling train, and it is thick to prepare different differences
Panel products.
The strip is aluminum alloy strip, and thickness is in 1-4mm.
The single chassis, which continuously prepares multistage segment difference slab technique, can be used for preparing asymmetric multistage segment difference plate product,
Preparation process is as follows:
Step 1: aluminum alloy strip material is using aluminum alloy strip as raw material with a thickness of 1-5mm；
Step 2: aluminum alloy strip is sized to, size is adjusted according to auto parts and components actual size；
Step 3: distinguishing grease on a surface layer of the identical aluminum alloy strip of two block sizes；
Step 4: two pieces of aluminum alloy strips are stacked, it is coated with the one side fitting of grease；
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, aluminium alloy compound plate and strip is obtained；
Step 6: multistage segment difference slab technique is continuously prepared using the single chassis, by the good aluminium alloy compound plate of soldering
Band carries out Varying-thickness rolling, produces continuous aluminum alloy gradient band, i.e., poor slab band；
Step 7: the poor slab strip side portion pad portion of rolling is cut off；
Step 8: shearing to poor slab band, it is processed into poor slab of different shapes；
Step 9: poor slab is separated, asymmetrical poor plate product is prepared.
Preferably, during poor heavy plate rolling, liquid nitrogen cooling is carried out to roll, realizes the heavy plate rolling of deep cooling difference.
It is the road of the important development of automotive light weight technology for steel with aluminium, in this background, one kind of the present invention is used to prepare more
The roll and two-roller mill of stage difference slab significantly reduce the requirement of poor thick slab production plants, it can be achieved that aluminium alloy difference is thick
Plate continuous operations, the high-performance aluminium alloy difference slab of production has the prospect of substitution steel difference slab and steel tailor welded, in vapour
The fields such as vehicle lightweight have bright prospects.
Further, the asymmetric aluminium alloy difference slab continuous operations of high-performance, technology production may be implemented in the present invention
The asymmetric aluminium alloy difference slab of high-performance be expected to substitution steel difference slab and steel tailor welded, have in fields such as automotive light weight technologies
There are bright prospects.
Detailed description of the invention
Fig. 1 is two stages difference slab roll front view in the embodiment of the present invention 1.
Fig. 2 is two stages difference slab roll top view in the embodiment of the present invention 1.
Fig. 3 is two stages difference slab roll side view in the embodiment of the present invention 1.
Fig. 4 is four circulation two stages trapezoidal roll stereoscopic schematic diagram in the embodiment of the present invention 1.
Fig. 5 is two stages difference heavy plate rolling schematic diagram in the embodiment of the present invention 1.
Fig. 6 is that schematic diagram is arranged in the operation of rolling roll gap in the embodiment of the present invention 1.
Fig. 7 is three kinds of typical poor slab schematic diagrames of the embodiment of the present invention 1.
Fig. 8 is the thin two stages difference slab schematic diagram in the side thickness side of the preparation of the embodiment of the present invention 2.
Fig. 9 is two stages difference slab schematic diagram thick on both sides and thin in the middle prepared by the embodiment of the present invention 3.
Figure 10 is 4 three stage of embodiment of the present invention difference slab roll front view.
Figure 11 is 4 three stage of embodiment of the present invention difference slab roll top view.
Figure 12 is 4 three stage of embodiment of the present invention difference slab roll side view.
Figure 13 is that the embodiment of the present invention 4 four recycles three stages trapezoidal roll stereoscopic schematic diagram.
Figure 14 is 4 three stage of embodiment of the present invention difference heavy plate rolling schematic diagram.
Figure 15 is that schematic diagram is arranged in the operation of rolling roll gap of the embodiment of the present invention 4.
Figure 16 is 4 five kinds of typical three stages difference slab schematic diagrames of gained of the embodiment of the present invention.
Figure 17 is three thin stage difference slabs of 5 gained side thickness side of the embodiment of the present invention.
Figure 18 is 6 gained of the embodiment of the present invention, three stage difference slabs thick on both sides and thin in the middle.
Figure 19 is the asymmetric two stages difference heavy plate rolling schematic diagram of the embodiment of the present invention 7.
Figure 20 is the typical asymmetric poor slab schematic diagram of three kinds of 7 gained of the embodiment of the present invention.
Figure 21 is the thin asymmetric two stages difference slab in 8 gained side thickness side of the embodiment of the present invention.
Figure 22 is 9 gained of the embodiment of the present invention asymmetric two stages difference slab thick on both sides and thin in the middle.
Figure 23 is the asymmetric three stages difference heavy plate rolling schematic diagram of the embodiment of the present invention 10.
Figure 24 is 10 5 kinds of the embodiment of the present invention typical asymmetric poor slab schematic diagrames.
Figure 25 is that 11 gained side of the embodiment of the present invention is thick, the thin composition of middle layer and side difference of asymmetric three stage is thick
Plate.
Figure 26 is that 12 gained left side of the embodiment of the present invention is most thick, middle layer is most thin, asymmetric three rank of right side medium thickness
Segment difference slab.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment 1
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of single chassis of the present invention continuously prepares multistage segment difference slab roll, including roll neck with
The body of roll, according to milling train, setting roll neck length L1 range is 100mm~600mm, and according to product width, barrel length L2 model is arranged
It encloses for 100mm~1500mm, wherein product width should be less than barrel length L2.
The body of roll is circumferentially divided into two parts, and a part of radius is R1, and for maximum body of roll radius, the radius of another part is
R2, for minimum body of roll radius, the radius of roll neck is R3, R1 > R2 > R3.According to product size demand, be arranged different R1, R2,
R3。
Fig. 1-Fig. 3 gives the case using the one block of poor slab of production in roll rotation one week, the i.e. part R1 and the part point R2
Not Dui Ying a semicolumn (approximation), described two parts only constitute a circulation.
In the actual operation process, according to poor slab width, it is thick that the every rotation of roll two pieces of differences of production in one week be can be set to
Plate, three blocks of poor slabs or more, cardinal principle is identical as Fig. 1-Fig. 3, by Roller Machining at trapezoidal the rolling of N (N >=1) a circulation
Roller is illustrated in figure 4 the trapezoidal roll stereoscopic schematic diagrams of 4 circulations, and in each circulation, the part R1 and the part R2 are arranged alternately,
And partially radian θ 2 and θ 1 corresponding with the part R2 is same or different by each R1, this part requires length to carry out according to product two sides
It determines.
The poor two stage thickness difference of slab is 2 (R1-R2), and two stages length is respectively equal to R1 θ 1, R2 θ 2, wherein θ 1- θ
2 use radian value.
For the roll of processing preparation, in order to guarantee roll rigidity and high antiwear property, roller surface can be with
Increase coating protection, such as chromium plating.
With reference to Fig. 5 and Fig. 6, poor Heavy plate production process is as follows:
Step 1: being raw material with the aluminum alloy strip 1 of high-quality, the thickness of aluminum alloy strip 1 is rolled in 1-4mm with deep cooling
Ultra-fine Grained AA2xxx, AA5xxx, AA6xxx aluminium alloy of system preparation is representative.
Step 2: in assembling process, upper roller 2 and lower roll 3 are completely right up and down by Roller Machining at identical pattern
Claim.The minimum thickness for being equal to rolled piece product as setting is arranged using at roll barrel radius R1 in roll gap between upper roller 2 and lower roll 3
Degree, i.e., the minimum thickness of poor slab are the gap values between rollers of the part R1 setting.
Step 3: aluminum alloy strip 1 is produced the two stages difference slab 4 of specific standard by milling train.
During poor heavy plate rolling, liquid nitrogen cooling can be carried out, to roll so as to carry out deep cooling difference heavy plate rolling.
Step 4: the two stages difference slab 4 of above-mentioned production is sheared, different poor plate products is prepared.Fig. 7 institute
Three kinds of typical poor plate products are shown as, wherein product 1 is that intermediate low two sides are high, and product 2 is that intermediate high two sides are low, and product 3 is
The high side in side is low.
Cardinal principle of the invention is that deformation stress in aluminium alloys is lower with respect to for steel material, when rolled piece thickness is thicker
When can be produced with two-roller mill.Thus, the trapezoidal roll of two stages through the invention, and it is high in roller surface coating
The coating of intensity may make roll rigidity larger, and when rolled piece passes through roll, the aluminium alloy difference for producing high quality is thick
Plate.
Embodiment 2
Using the device and technique of embodiment 1, side is produced with a thickness of 1.2mm, the poor slab that side is 1.0mm.
400mm is set by roll barrel length L2, roll neck length L1 is set as 500mm.Roll barrel maximum radius R1
It is set as 150mm, roll barrel least radius R2 is set as 149.9mm.During the rolling process, setting roll gap is 1mm.Using super
Fine grain AA6061 aluminium alloy is that raw material is rolled, with a thickness of 1.5mm, width 200mm before rolled piece rolling.It is rolled by a time
After system, poor slab is sheared.Poor plate product is as shown in Figure 8.
Embodiment 3
Using the device and technique of embodiment 1, side is produced with a thickness of 1.6mm, the poor slab that side is 1.2mm.
500mm is set by roll barrel length L2, roll neck length L1 is set as 550mm.Roll barrel maximum radius R1
It is set as 200mm, roll barrel least radius R2 is set as 199.8mm.During the rolling process, setting roll gap is 1.2mm.Using
Ultra-fine Grained AA5052 aluminium alloy is that raw material is rolled, with a thickness of 2.0mm, width 240mm before rolled piece rolling.By a time
After rolling, side is produced with a thickness of 1.6mm, the aluminium alloy difference slab that side is 1.2mm.Poor slab is sheared, is added
Work is as shown in Figure 9 at product.
Embodiment 4
With reference to Figure 10, Figure 11 and Figure 12, a kind of single chassis of the present invention continuously prepares three stage difference slab rolls, including roll neck
With the body of roll, according to milling train, setting roll neck length L1 range is 100mm~600mm, and according to product width, barrel length L2 is arranged
Range is 100mm~1500mm, and wherein product width is less than barrel length L2.
The body of roll is circumferentially divided into three parts, and the radius of first part is R1, for maximum body of roll radius；The radius of second part
It is middle layer body of roll radius for R2；The radius of Part III is R3, for minimum body of roll radius；The radius of roll neck is R4, R1 > R2
> R3 > R4.According to product size demand, different R1, R2, R3, R4 are set.θ 1, θ 2, θ 3 are respectively first part, second
Divide, radian corresponding to Part III, size is determined according to each stage length standard of poor plate product.
Poor each stage length of plate product is respectively equal to R1 θ 1, R2 θ 2, R3 θ 3, and wherein θ 1- θ 3 uses radian value.
Figure 10-Figure 12 gives the case using the one block of poor slab of production in roll rotation one week, i.e. first part, second
Divide, Part III only constitutes a circulation.
In the actual operation process, according to poor slab width, it is thick that the every rotation of roll two pieces of differences of production in one week be can be set to
Plate, three blocks of poor slabs or more, cardinal principle is identical as Figure 10-Figure 12, by Roller Machining at the trapezoidal of N (N >=1) a circulation
Roll is as shown in figure 13 the trapezoidal roll stereoscopic schematic diagram of 4 circulations.First part, second part and in each circulation
Putting in order for three parts is identical.
For the roll of processing preparation, in order to guarantee roll rigidity and high antiwear property, roller surface can be with
Increase coating protection, such as chromium plating.
With reference to Figure 14 and Figure 15, poor Heavy plate production process is as follows:
Step 1: being raw material with the aluminum alloy strip 1 of high-quality, the material thickness of aluminum alloy strip 1 is in 1-4mm.Aluminium closes
Golden plate band 1 is using Ultra-fine Grained AA2xxx, AA5xxx, AA6xxx aluminium alloy of deep cooling rolling preparation as representative.
Step 2: in assembling process, upper roller 2 and lower roll 3 are completely right up and down by Roller Machining at identical pattern
Claim.The minimum thickness for being equal to rolled piece product as setting is arranged using at roll barrel radius R1 in roll gap between upper roller 2 and lower roll 3
Degree.That is, the minimum thickness of poor plate product is the gap values between rollers of first part's setting, the thickness difference of middle layer and minimum thickness layer
For 2 (R1-R2), the thickness difference of middle layer and maximum gauge layer is 2 (R2-R3).
Step 3: aluminum alloy strip is produced three stage difference slabs 5 of specific standard by milling train.
During poor heavy plate rolling, liquid nitrogen cooling can be carried out, to roll so as to carry out deep cooling difference heavy plate rolling.
Step 4: three stage difference slabs 5 of above-mentioned production are sheared, different poor plate products is prepared.Figure 16
Five kinds of typical poor plate products are shown, wherein poor slab 1 is high-medium-low structure, poor slab 2 is high-medium-low-high knot
Structure, poor slab 3 are high-low-middle structures, and poor slab 4 is medium-low-high-middle structure, and poor slab 5 is low-high-medium-low structure.
Cardinal principle of the invention is that deformation stress in aluminium alloys is lower with respect to for steel material, when rolled piece thickness is thicker
When can be produced with two-roller mill.Thus, three stages trapezoidal roll through the invention, and it is high in roller surface coating
The coating of intensity may make roll rigidity larger, and when rolled piece passes through roll, the aluminium alloy difference for producing high quality is thick
Plate.
Embodiment 5
Using the device and technique of embodiment 2, produce side with a thickness of 1.6mm, centre be 1.4mm, side is 1.2mm's
Three stage difference slabs.
450mm is set by roll barrel length L2, roll neck length L1 is set as 500mm.Roll barrel maximum radius R1
It is set as 150mm, roll barrel interlude radius R2 is set as 149.9mm, and roll barrel least radius is 149.8mm.Roll
Middle θ 1, θ 2, θ 3 are respectively set to 120 °.During the rolling process, it is 1.2mm that minimum roll gap, which is arranged,.Using Ultra-fine Grained AA6061 aluminium
Alloy is that raw material is rolled, with a thickness of 2mm, width 240mm before rolled piece rolling.After being rolled by a time, to poor thick
Plate is sheared.Poor plate product is as shown in figure 17.
Embodiment 6
Using the device and technique of embodiment 2, the three stages difference thickness that thickness is respectively 1.6mm, 1.2mm and 1.0mm is produced
Plate.
500mm is set by roll barrel length L2, roll neck length L1 is set as 550mm.Roll barrel maximum radius R1
It is set as 200mm, roll barrel least radius R2 is set as 199.7mm, and interlude roll barrel radius is set as 199.8mm.
θ 1, θ 2, θ 3 are respectively set to 60 °, 120 ° and 180 ° in roll.In the operation of rolling, setting roll gap is 1.0mm.Using Ultra-fine Grained
AA5052 aluminium alloy is that raw material is rolled, with a thickness of 2.0mm, width 250mm before rolled piece rolling.It is rolled by a time
Afterwards, the three stage difference slabs that side is respectively 1.6mm, 1.2mm and 1.0mm with a thickness of thickness are produced.Poor slab is cut
It cuts, it is as shown in figure 18 to be processed into product.
Embodiment 7
As shown in figure 19, a kind of rolling preparation method of the asymmetric two stages difference slab of high-performance of the present invention, including it is as follows
Step:
Step 1: aluminum alloy strip material is using aluminum alloy strip as raw material with a thickness of 1-5mm；
Step 2: aluminum alloy strip is sized to, size is adjusted according to auto parts and components actual size；
Step 3: the opposite cover in the identical aluminum alloy strip 1 of size and aluminum alloy strip 29 coats respectively
Grease 15, for preventing plasticity process interface from being rolled conjunction；
Step 4: aluminum alloy strip 1 and aluminum alloy strip 29 are stacked, it is coated with the one side fitting of grease 15, is obtained
To two layers of aluminum alloy strip 16 of stacking；
Step 5: the edge of two layers of aluminum alloy strip 16 of stacking is carried out spot welding, aluminium alloy compound plate and strip 6 is obtained,
The solder joint 17 of both sides of edges prevents operation of rolling rolled piece from separating；
Step 6: regarding the good aluminium alloy compound plate and strip 6 of soldering as rolled piece 7, Varying-thickness rolling is carried out, is produced continuous
Aluminum alloy gradient band, i.e., poor slab band 10；
Step 7: poor slab band 10 goes out milling train, i.e., the two stages difference slab 11 with solder joint, two sides are the solder joints after rolling
12,12 part of solder joint after rolling is cut off, the poor slab 13 after obtaining trimming；
Step 8: shearing to the poor slab 13 after trimming, it is processed into poor slab of different shapes, as shown in figure 20；
Step 9: the poor slab after processing is separated, asymmetrical poor plate product 14 is prepared.
Wherein, the 6th step of the invention is accomplished in that
Slab band of going on business is produced by strip by milling train using double-roll rolling mill.
Double-roll rolling mill of the invention includes upper roller 2 and lower roll 3 completely symmetrical above and below, and upper roller 2 and lower roll 3 are all made of two ranks
Segment difference slab roll, referring to FIG. 1, FIG. 2 and FIG. 3, two stages difference slab roll include roll neck and the body of roll, and roll neck length L1 model is arranged
It encloses for 100mm~600mm, according to product width, setting barrel length L2 range is 100mm~1500mm, wherein product width
It should be less than barrel length L2.
The body of roll is circumferentially divided into two parts, and a part of radius is R1, and the radius of another part is R2, and R1 > R2.Roll neck
Radius be R3, and R3 < R2.
Two parts have roll gap in junction, and roll gap is arranged using at roll barrel radius R1 as setting, are equal to rolled piece and produce
The minimum thickness of product, i.e., the minimum thickness of poor slab are the gap values between rollers of the part R1 setting.
In the actual operation process, according to poor slab width, it is thick that the every rotation of roll two pieces of differences of production in one week be can be set to
Plate, three blocks of poor slabs or more, cardinal principle is identical as Fig. 1-Fig. 3, by Roller Machining at trapezoidal the rolling of N (N >=1) a circulation
Roller, in each circulation, the part R1 and the part R2 are arranged alternately, and the part each R1 radian θ 2 and θ 1 corresponding with the part R2 it is identical or
Person is different, this part requires length to be determined according to product two sides.
The poor two stage thickness difference of slab is 2 (R1-R2), and two stages length is respectively equal to R1 θ 1, R2 θ 2, wherein θ 1- θ
2 use radian value.
For the roll of processing preparation, in order to guarantee roll rigidity and high antiwear property, roller surface can be with
Increase coating protection, such as chromium plating.
During poor heavy plate rolling, liquid nitrogen cooling can be carried out, to roll so as to carry out deep cooling difference heavy plate rolling.
Cardinal principle of the invention is that deformation stress in aluminium alloys is lower with respect to for steel material, when rolled piece thickness is thicker
When can be produced with two-roller mill.Meanwhile according to rolling symmetry, once prepared by the method that complex plate strip rolls
Two pieces difference slab.
Embodiment 8
Using the device and technique of embodiment 7, the asymmetric difference thickness that side is 1.0mm with a thickness of 1.4mm, side is prepared
Plate, steps are as follows:
Step 1: rolled piece is using aluminium alloy AA5052 band as raw material with a thickness of 1.75mm.
Step 2: aluminum alloy strip to be processed into the band of certain 300mm × 200mm.
Step 3: in the identical aluminium alloy surface layer grease of two block sizes.
Step 4: two blocks of aluminium alloys of the side of grease are stacked.
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, mono- solder joint of every 30mm.
Step 6: the good aluminium alloy compound plate and strip of soldering is carried out Varying-thickness rolling.The side of rolled piece with a thickness of 2.8mm,
Side is with a thickness of 2.0mm.
Step 7: the poor slab strip side portion pad portion of rolling is cut off.
Step 8: being sheared to poor slab band.
Step 9: poor slab is separated, the thin asymmetrical poor plate product in side thickness side, such as Figure 21 are prepared
It is shown.
Embodiment 9
Using the device and technique of embodiment 7, both ends are prepared with a thickness of 1.6mm, the asymmetric difference that interior thickness is 1.2mm
Slab, steps are as follows:
Step 1: rolled piece is using aluminium alloy AA6061 band as raw material with a thickness of 2mm.
Step 2: aluminum alloy strip to be processed into the band of certain 2000mm × 250mm.
Step 3: in the identical aluminium alloy surface layer grease of two block sizes.
Step 4: two blocks of aluminium alloys of the side of grease are stacked.
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, mono- solder joint of every 40mm.
Step 6: the good aluminium alloy compound plate and strip of soldering is carried out Varying-thickness rolling.The thickness of rolled piece with a thickness of
3.2mm, thinnest part is with a thickness of 2.4mm.
Step 7: the poor slab strip side portion pad portion of rolling is cut off.
Step 8: cut into poor slab band the product of appropriate size.
Step 9: poor slab is separated, asymmetrical poor plate product thick on both sides and thin in the middle, such as Figure 22 are prepared
It is shown.
Embodiment 10
As shown in figure 23, a kind of rolling preparation method of the asymmetric three stages difference slab of high-performance of the present invention, including it is as follows
Step:
Step 1: aluminum alloy strip material is using aluminum alloy strip as raw material with a thickness of 1-5mm；
Step 2: aluminum alloy strip is sized to, size is adjusted according to auto parts and components actual size；
Step 3: the opposite cover in the identical aluminum alloy strip 1 of size and aluminum alloy strip 29 coats respectively
Grease 15, for preventing plasticity process interface from being rolled conjunction；
Step 4: aluminum alloy strip 1 and aluminum alloy strip 29 are stacked, it is coated with the one side fitting of grease 15, is obtained
To two layers of aluminum alloy strip 16 of stacking；
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, aluminium alloy compound plate and strip is obtained；
Step 5: the edge of two layers of aluminum alloy strip 16 of stacking is carried out spot welding, aluminium alloy compound plate and strip 6 is obtained,
The solder joint 17 of both sides of edges prevents operation of rolling rolled piece from separating；
Step 6: regarding the good aluminium alloy compound plate and strip 6 of soldering as rolled piece 7, the rolling of three stage Varying-thickness is carried out, is produced
Continuous aluminum alloy gradient band, i.e. three stage difference slab bands 10；
Step 7: three stage difference slab bands 10 go out milling train, the i.e. three stage difference slabs 11 with solder joint, two sides are after rolling
Solder joint 12,12 part of solder joint after rolling cuts off, the poor slab 13 after obtaining trimming；
Step 8: shearing to the poor slab 13 after trimming, it is processed into poor slab of different shapes, as shown in figure 24；
Step 9: the poor slab after processing is separated, asymmetrical three stages difference plate product 14 is prepared.
Wherein, the 6th step of the invention uses two roller single chassis difference heavy plate mill rolling modes or AGC Varying-thickness rolling side
Formula is realized.When using two roller single chassis difference heavy plate mills (double-roll rolling mill), the good aluminium alloy compound plate and strip of soldering is passed through into milling train,
Three stage difference slab bands can be produced.
Double-roll rolling mill of the invention includes upper roller 7 and lower roll 8 completely symmetrical above and below, and upper roller 7 and lower roll 8 are all made of three ranks
Segment difference slab roll, 0, Figure 11 and Figure 12, three stage difference slab rolls include that roll neck and the body of roll are arranged according to milling train referring to Fig.1
Roll neck length L1 range is 100mm~600mm, and according to product width, setting barrel length L2 range is 100mm~1500mm,
Wherein product width is less than barrel length L2.
The body of roll is circumferentially divided into three parts, and the radius of first part is R1, for maximum body of roll radius；The radius of second part
It is middle layer body of roll radius for R2；The radius of Part III is R3, for minimum body of roll radius；The radius of roll neck is R4, R1 > R2
> R3 > R4.Wherein, each section has roll gap in junction, and roll gap is arranged using at roll barrel radius R1 as setting, is equal to
The minimum thickness of rolled piece product.
According to product size demand, different R1, R2, R3, R4 are set.θ 1, θ 2, θ 3 are respectively first part, second
Divide, radian corresponding to Part III, size is determined according to each stage length standard of poor plate product.
The minimum thickness of poor plate product is the gap values between rollers of first part's setting, the thickness difference of middle layer and minimum thickness layer
Not Wei 2 (R1-R2), the thickness difference of middle layer and maximum gauge layer is 2 (R2-R3).
Poor each stage length of plate product is respectively equal to R1 θ 1, R2 θ 2, R3 θ 3, and wherein θ 1- θ 3 uses radian value.
In the actual operation process, according to poor slab width, it is thick that the every rotation of roll two pieces of differences of production in one week be can be set to
Plate, three blocks of poor slabs or more, cardinal principle is identical as Figure 10-Figure 12, by Roller Machining at the trapezoidal of N (N >=1) a circulation
Roll, first part in each circulation, second part and Part III put in order it is identical.
For the roll of processing preparation, in order to guarantee roll rigidity and high antiwear property, roller surface can be with
Increase coating protection, such as chromium plating.
During poor heavy plate rolling, liquid nitrogen cooling can be carried out, to roll so as to carry out deep cooling difference heavy plate rolling.
Cardinal principle of the invention is that deformation stress in aluminium alloys is lower with respect to for steel material, when rolled piece thickness is thicker
When can be produced with two-roller mill.Meanwhile according to rolling symmetry, once prepared by the method that complex plate strip rolls
Two pieces difference slab.
It is two specific examples of the invention below.
Embodiment 11
Using the device and technique of embodiment 10, prepare that left thickness is 1.4mm, intermediate layer thickness 1.2mm, right side are
The asymmetric three stages difference slab of 1.0mm, steps are as follows:
Step 1: rolled piece is using aluminium alloy AA5052 band as raw material with a thickness of 1.5mm.
Step 2: aluminum alloy strip to be processed into the band of certain 2000mm × 240mm.
Step 3: by the identical aluminium alloy surface layer grease of two block sizes.
Step 4: two blocks of aluminium alloys of the side of grease are stacked.
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, mono- solder joint of every 20mm.
Step 6: the good aluminium alloy compound plate and strip of soldering is carried out Varying-thickness rolling.The left thickness of rolled piece be 2.8mm,
Middle layer is 2.4mm, right thickness 2.0mm.
Step 7: the poor slab strip side portion pad portion of rolling is cut off.
Step 8: being sheared to poor slab band.
Step 9: poor slab is separated, the thin asymmetrical poor plate product in side thickness side, such as Figure 25 are prepared
It is shown.
Embodiment 12
Using the device and technique of embodiment 10, prepare left thickness be 1.6mm, intermediate layer thickness 1.2mm, right side it is thick
Prepared by the asymmetric three stages difference slab that degree is 1.4mm, steps are as follows:
Step 1: rolled piece is using the ultra-fine grained aluminium alloy AA6061 band of deep cooling rolling preparation as raw material with a thickness of 1.75mm.
Step 2: aluminum alloy strip to be processed into the band of certain 1000mm × 250mm.
Step 3: by the identical aluminium alloy surface layer grease of two block sizes.
Step 4: two blocks of aluminium alloys of the side of grease are stacked.
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, mono- solder joint of every 40mm.
Step 6: the good aluminium alloy compound plate and strip of soldering is carried out Varying-thickness rolling.Rolled piece left thickness be 3.2mm, in
Interbed is with a thickness of 2.4mm, right thickness 2.8mm.
Step 7: the poor slab strip side portion pad portion of rolling is cut off.
Step 8: cut into poor slab band the product of appropriate size.
Step 9: poor slab is separated, asymmetrical three stages difference plate product thick on both sides and thin in the middle is prepared,
As shown in figure 26.
Claims (10)
1. a kind of single chassis continuously prepares multistage segment difference slab roll, including roll neck and the body of roll, which is characterized in that the body of roll edge
It is circumferential that the part n is divided into according to number of stages n, the radius of each section be respectively R1, R2 ..., Rn, and R1 > R2 > Rn, n >=2.
2. single chassis continuously prepares multistage segment difference slab roll according to claim 1, which is characterized in that the half of the roll neck
Diameter is R, and R < Rn.
3. single chassis continuously prepares multistage segment difference slab roll according to claim 1, which is characterized in that the n=2 or n
=3.
4. single chassis continuously prepares multistage segment difference slab roll according to claim 1, which is characterized in that the barrel length
Range 100mm~1500mm, roll neck length range 100mm~600mm, body surface are provided with coating protection.
5. single chassis continuously prepares multistage segment difference slab roll according to claim 1, which is characterized in that the part n is
One circulation, a roll includes N number of circulation, N >=1, and part 1 in each circulation, part 2 ..., the n-th part
Put in order identical, the part 1, part 2 ..., radian corresponding to the n-th part is according to poor plate product each stage
Length standard determines.
6. a kind of double-roll rolling mill for continuously preparing multistage segment difference slab roll with single chassis described in claim 1, feature exist
In upper roller and lower roll are all made of the roll, and up-down rollers are full symmetric, and the roll gap between the upper roller and lower roll is arranged with roll
As setting at body of roll radius R1, it is equal to the minimum thickness of rolled piece product.
7. a kind of single chassis using double-roll rolling mill described in claim 6 continuously prepares multistage segment difference slab technique, feature exists
In producing the poor slab of specific standard, gained difference slab strip sheared, difference is prepared by strip by milling train
Poor plate product.
8. single chassis continuously prepares multistage segment difference slab technique according to claim 7, which is characterized in that the strip is aluminium
Alloy sheet strip, thickness is in 1-4mm.
9. single chassis continuously prepares multistage segment difference slab technique according to claim 7, which is characterized in that the difference slab produces
Product are asymmetric multistage segment difference slab, and preparation process is as follows:
Step 1: aluminum alloy strip material is using aluminum alloy strip as raw material with a thickness of 1-5mm；
Step 2: aluminum alloy strip is sized to, size is adjusted according to auto parts and components actual size；
Step 3: distinguishing grease on a surface layer of the identical aluminum alloy strip of two block sizes；
Step 4: two pieces of aluminum alloy strips are stacked, it is coated with the one side fitting of grease；
Step 5: the edge for two pieces of aluminum alloy strips that heap is folded carries out spot welding, aluminium alloy compound plate and strip is obtained；
Step 6: continuously prepare multistage segment difference slab technique using the single chassis, by the good aluminium alloy compound plate and strip of soldering into
The rolling of row Varying-thickness, produces continuous aluminum alloy gradient band, i.e., poor slab band；
Step 7: the poor slab strip side portion pad portion of rolling is cut off；
Step 8: shearing to poor slab band, it is processed into poor slab of different shapes；
Step 9: poor slab is separated, asymmetrical poor plate product is prepared.
10. single chassis continuously prepares multistage segment difference slab technique according to claim 9, which is characterized in that rolled in poor slab
During system, liquid nitrogen cooling is carried out to roll, realizes the heavy plate rolling of deep cooling difference.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018101631038 | 2018-02-26 | ||
| CN2018101601140 | 2018-02-26 | ||
| CN201810160114.0A CN108405610A (en) | 2018-02-26 | 2018-02-26 | A kind of rolling preparation method of the asymmetric three stages difference slab of high-performance |
| CN201810160116X | 2018-02-26 | ||
| CN201810163103.8A CN108421826A (en) | 2018-02-26 | 2018-02-26 | A kind of single chassis continuously prepares two benches and thickens sheet roll and double-roll rolling mill and technique |
| CN2018101601155 | 2018-02-26 | ||
| CN201810160116.XA CN108213083A (en) | 2018-02-26 | 2018-02-26 | A kind of single chassis continuously prepares three stages thickening sheet roll and double-roll rolling mill and technique |
| CN201810160115.5A CN108405612A (en) | 2018-02-26 | 2018-02-26 | A kind of rolling preparation method of the asymmetric two benches difference slab of high-performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109759449A true CN109759449A (en) | 2019-05-17 |
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ID=66456382
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910132692.8A Pending CN109759449A (en) | 2018-02-26 | 2019-02-22 | A kind of single chassis continuously prepares multistage segment difference slab roll and double-roll rolling mill and technique |
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| CN (1) | CN109759449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112222186A (en) * | 2020-09-18 | 2021-01-15 | 太原理工大学 | Device and method for producing variable thick plate with high precision |
| CN112718862A (en) * | 2020-12-17 | 2021-04-30 | 太原理工大学 | Pulse current auxiliary rolling device and method for titanium and stainless steel variable-thickness composite plate |
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Application publication date: 20190517 |