CN109127771A - A method of it is rolled up using multiple layer metal strip in razor-thin and compound prepares seamless pipe - Google Patents
A method of it is rolled up using multiple layer metal strip in razor-thin and compound prepares seamless pipe Download PDFInfo
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- CN109127771A CN109127771A CN201811004129.4A CN201811004129A CN109127771A CN 109127771 A CN109127771 A CN 109127771A CN 201811004129 A CN201811004129 A CN 201811004129A CN 109127771 A CN109127771 A CN 109127771A
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- thin
- razor
- strip
- core bar
- rolled
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
A method of it is rolled up using multiple layer metal strip in razor-thin and compound prepares seamless pipe, comprising the following steps: (1) according to the thick section diameter of core bar, very thin tape thickness and pre-wound outer diameter, calculated and cut out strip in razor-thin；(2) by strip in razor-thin by being wrapped on core bar, fixation is simultaneously compacted；(3) it will be enclosed with pass of the strip in razor-thin volume across molding roller group of core bar, drawing is carried out to core bar by Drawing Force bringing device, strip in razor-thin volume is rolled deformation between the thick section of core bar and molding roller group；(4) it makes annealing treatment；(5) cold-drawn subtracts wall sizing.Method of the invention can make metal polar thin belt volume that seamless tube blank be made through a cold forming, simplify process and reduce cost；Finished product can be produced more specifications, be had a good application prospect.
Description
Technical field
It is the invention belongs to field of material technology, in particular to a kind of to prepare seamless pipe using multiple layer metal strip in razor-thin volume is compound
Method.
Background technique
Metal seamless tube be it is a kind of there is hollow section, the non-jointed strip tubing in periphery, because it is with hollow section,
Lighter in weight is had both while having many advantages, such as same torsional strength compared with isodiametric solid round steel, is widely used
In fluid transport pipe, oil drill rocker, truck drive shaft, bicycle rack and steel feet hand cradle etc., with micro shaping, the hair of micro manufacturing
Exhibition, the preparation of small-bore seamless pipe are even more to be increasingly becoming one of research hotspot；By taking medical field as an example, in minimally invasive interventional medicine work
Under the background that journey rapidly develops, mis instruments also gradually flourish with micro-material；According to the difference for the treatment of disease, can be divided into
Cardiovascular intervention apparatus, cerebrovascular intervention apparatus and peripheral blood vessel intervention apparatus etc.；All kinds of brackets are soft for human body because needing
The reparation and substitution of tissue, therefore have special requirement, such as size public affairs in size and performance to used metal pipe billet
Difference is small, flatness requirements are high, good biocompatibility, strength support performance and solubility property appropriate.
Compared to other types converted products such as plate, stick, item, forging etc., seamless metal tubing is that a kind of process is long, processes work
The product that skill is complicated and difficulty of processing is big；Existing seamless tubular goods preparation method includes forging and forming, roll piercing, equal channel angular pressing
Pressure, diameter angle tube extrusion the methods of are combined with hot extrusion；Forging and forming be forging molding and it is stamping forming be collectively referred to as, be utilize
Tup, anvil block or the formed punch of metal forming machinery apply pressure to blank by mold, are allowed to generate plastic deformation, thus needed for obtaining
The method for processing forming of the product of shape and size；Its basic working procedure mainly has upset, pulling and punching, and there is processing flows
The disadvantages of long and waste metal；Roll piercing includes Mannesmann piercing and three high cross piercing etc., and Mannesmann piercing method is
Using blank along longitudinal direction on action of pulling stress, make round billet axle center area's metal generate micro-crack, be then extended to puffs, perforate
The resistance of Shi Dingtou makes surfaces externally and internally speed difference generate shear strain, and top participation plasticity adds when axle center metal occurs loose
Work, the processing method that solid billet is worn into hollow billet；Mannesmann piercing is there are in vestibule the problems such as cardiorrhexis, three high cross piercing
To eliminate the problem, the central part of the pipe before top is solely subjected to compression；But there are still piercing processes for roller trio skew rolling
State modulator is complicated, and it is larger to often result in metal flow resistance, rolls card or is pierced by hollow billet bias seriously, pipe inside and outside surface quality
The problems such as difference, top serious wear.It is to prepare tissue to surpass that Equal Channel Angular Pressing or diameter angle tube extrusion, which combine method with hot extrusion,
Effective ways of grain refining tubing, but deposit and rub in process excessive, technological parameter is difficult to control, and energy consumption is big equal to be lacked
Point.
Summary of the invention
For the preparation of existing seamless pipe, technically above shortcomings, the present invention provide a kind of utilization multiple layer metal pole
The compound method for preparing seamless pipe of thin coiled stock makes it through by the multilayer strip in razor-thin volume on core bar by roller draw out method
Severe plastic deformation is generated when pass, is formed initial composite under the action of strong pressure, is then made annealing treatment, in interlayer circle
Diffusion region is formed at face, ensure that the metallurgical bonding of compound interface.Simplify process while reduce cost, obtain target size and
The seamless pipe of performance.
It is of the invention roll the compound method for preparing seamless pipe using multiple layer metal strip in razor-thin the following steps are included:
1, prepare raw material: the thick section diameter of known core bar, very thin tape thickness and pre-wound outer diameter calculate very thin for what is rolled
The number of plies, width and the length of band cut out the strip in razor-thin for obtaining corresponding size according to calculated result；Formula based on calculating is distinguished
Are as follows:
T=D0/2H0-D1/2H0, (1)
L=π t D1+π(t+1)tH0, (2)
With
W0=L3+50mm； (3)
In formula: t is that need to roll the strip in razor-thin number of plies；D0For pre-wound outer diameter, unit mm；D1For the thick section diameter of core bar, unit
For mm；H0For very thin tape thickness, unit mm；L is that need to cut very thin strip length, unit mm；W0For very thin bandwidth need to be cut
Degree, unit mm；L3For the length of the thick section of core bar, unit mm；The core bar includes the thick section of core bar, core bar thin segment and the two
Between core bar changeover portion, and the end of core bar thin segment side be equipped with thread segment；Oil removing is gone in strip in razor-thin cleaning after cutting out
Dirt, being then polishing to surface is hair side, then cleans removal surface debris；Material selection kirsite, the aluminium of the strip in razor-thin close
Gold or fine copper；Core bar removing surface is clean；
2, it rolls strip in razor-thin volume: strip in razor-thin is wound around on core bar along its length and fixed by the setting number of plies,
One side of middle strip in razor-thin and the end part aligning of the thick section of core bar；Then to strip in razor-thin carry out compaction treatment, make core bar thin segment and
Core bar changeover portion fits together with strip in razor-thin, then strip in razor-thin outer surface is adhesively fixed with adhesive tape, forms strip in razor-thin very thin
Band volume；
3, draw is compound: inside is enclosed with to pass of the strip in razor-thin volume across molding roller group of core bar, core bar thin segment and core
The intersection of bar changeover portion is located inside pass, and thread segment and the chucking mechanism of core bar are assembled together；Applied by Drawing Force
Device drives chucking mechanism to carry out drawing to core bar, makes the thick section of core bar by pass, drives strip in razor-thin volume across pass, strip in razor-thin
Volume rolled deformation completion draw between the thick section of core bar and molding roller group is compound, forms seamless tube blank；
4, it makes annealing treatment: being made annealing treatment after seamless tube blank is separated with core bar, obtain annealing pipe；
5, cold-drawn subtracts wall sizing: carrying out tube reducing to annealing pipe using stent draw-off gear and subtracts wall, then on sizing mill
It is rolled, the seamless pipe of required size is made.
Above-mentioned strip in razor-thin with a thickness of 10~300 μm；The thick section diameter of core bar is 3~12mm, and core bar thin segment diameter is core
The 1/2~9/10 of the thick section diameter of bar.
In the above method, the number of plies of strip in razor-thin volume is 2~40 layers.
In the above method, when the material of strip in razor-thin is kirsite, step 4 annealing is to be first to heat to 300~380
DEG C, 0.1~2 hour is kept the temperature, cools to room temperature with the furnace；When the material of strip in razor-thin is aluminium alloy, step 4 annealing is first to add
Heat keeps the temperature 2~8 hours, cools to room temperature with the furnace to 350~500 DEG C；When the material of strip in razor-thin is fine copper, at step 4 annealing
Reason is to be first to heat to 600~700 DEG C, keeps the temperature 1~2 hour, cools to room temperature with the furnace.
In above-mentioned step 3, strip in razor-thin rolls up the deflection after being drawn 50~60%, is rolled up according to strip in razor-thin before and after drawing
Deflection setting pass diameter.
In above-mentioned step 3, the compound device used of draw is carried out as roller and pulls out molding machine, which includes forming roller
Group, fixation and adjustment device, chucking mechanism, Drawing Force bringing device and stage apparatus；The molding roller group is by multiple passes
Roller group is at the gap that each hole type roll surrounds constitutes pass；Fixed and adjustment device includes memorial archway and card slot, forms each hole of roller group
The bearing of type roller is assemblied on the bearing block of memorial archway, and the two sides of memorial archway are fixed in card slot；Card slot is bolted on platform
The side of device, the other side of stage apparatus are fixed with Drawing Force bringing device；The Drawing Force bringing device is reel dress
It sets or hydraulic cylinder device；The roll device is assembled together by threephase asynchronous, speed reducer and reel and is formed；It is described
Hydraulic cylinder device be assembled together and form by cylinder body, drive end bearing bracket and piston rod；Chucking mechanism be located at Drawing Force bringing device and
Form between roller group, the chucking mechanism is made of snap ring and double thread hole connector, the snap ring by ring part and
Screw portion is integrally formed structure, and the double thread hole connector both ends are equipped with internal screw thread；Carry out draw compound tense, snap ring
It is assembled together with Drawing Force bringing device, screw portion and the double thread hole connector of snap ring are connected through a screw thread, double thread
Hole connector is connected through a screw thread with core bar, and starting Drawing Force bringing device drives chucking mechanism mobile, and then core bar is driven to move
It is dynamic compound to strip in razor-thin volume progress draw.
In the above method, when Drawing Force bringing device is roll device, guide roller is equipped between reel and chucking mechanism,
Guide roller is equipped with wirerope, and one end of wirerope is assemblied on reel, and the other end is fixedly connected with the front end of sliding suspension hook, sliding
The rear end of dynamic suspension hook is nested together with snap ring；Draw compound tense is carried out, pulls wirerope to the movement of reel direction, band by reel
Dynamic strip in razor-thin volume movement.
In the above method, when Drawing Force bringing device is hydraulic cylinder device, the front end of piston rod is equipped with pulley, pulley
On one section of wirerope be fixedly connected on snap ring, wirerope bypass pulley after the other end be fixed in wirerope fixing seat；Into
Row draw compound tense, band movable pulley and strip in razor-thin volume movement mobile to cylinder body direction by the piston rod of hydraulic cylinder device.
In the above method, card slot is fixed on stage apparatus by bolt, and stage apparatus is equipped with several bolts hole, passes through
Card slot is mounted on different bolts hole, adjusts position of the card slot on stage apparatus.
Method of the invention can make metal polar thin belt volume that seamless tube blank be made through a cold forming, simplify process and drop
Low cost；Annealing purpose is the conjugation for enhancing metal polar thin interband, and because increasing with temperature, interface two sides elements diffusion adds
Play is conducive to compound；Raw material is the metal polar thin band for meeting service performance, it is easier to processing and acquisition；Finished product can be produced
More specifications, have a good application prospect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce；For those of ordinary skill in the art, it is not paying
Under the premise of creative work, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is to roll up the compound method flow signal for preparing seamless pipe using multiple layer metal strip in razor-thin in the embodiment of the present invention
Figure；
Fig. 2 is that the roller in the embodiment of the present invention 1 pulls into type apparatus structure schematic diagram；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is that the roller in the embodiment of the present invention 2 pulls into type apparatus structure schematic diagram；
Fig. 5 is that the roller in the embodiment of the present invention 1 pulls out molding roller group partial structure diagram in molding machine；
Fig. 6 is the A-A profile structure diagram of Fig. 5；
Fig. 7 is that the roller in the embodiment of the present invention 2 pulls out molding roller group partial structure diagram in molding machine；
Fig. 8 be the embodiment of the present invention in melting process in calculate strip in razor-thin size equivalent diagram；
Fig. 9 is the core bar structure schematic diagram in the embodiment of the present invention；
Figure 10 is that the strip in razor-thin that rolls in the embodiment of the present invention 1 rolls up process schematic；White curves arrow instruction side in figure
To for core bar rotation direction；White straight arrows instruction direction is that process carries out step；
Figure 11 is that strip in razor-thin rolls up deformation process schematic diagram in 1 draw recombination process in the embodiment of the present invention；
In figure: 1, reel, 2, speed reducer, 3, wirerope, 4, guide roller, 5, pulley suspension hook, 6, snap ring, 7, double thread hole company
Connector, 8, core bar (being cased with strip in razor-thin volume), 9, three roller memorial archways, 10, three-roll formation roller group, 11, card slot, 12, operating platform, 13,
Bolt, 14, bracket, 15, cushion block, 16, draw device fixing seat, 17, key, 18, threephase asynchronous, 19, cylinder body, 20, preceding
End cap, 21, piston rod, 22, pulley, 23, wirerope fixing seat, 24, four-roller memorial archway, 25, four-roller molding roller group, 26, bearing block,
27, bolt hole, 28, middle layer, 29, strip in razor-thin, 30, strip in razor-thin volume, 31, forming roller, 32, seamless tube blank, L0, screw thread segment length
Degree, L1, core bar thin segment length, L2, core bar transition section length, the thick segment length of L3, core bar.
Specific embodiment
304 stainless steel of material selection of core bar of the invention.
It is using sand paper or sander that strip in razor-thin, which is polished, in the embodiment of the present invention.
To be detached from convenient for rolling up strip in razor-thin after draw with core bar in the embodiment of the present invention, before preparing strip in razor-thin volume, first use
Graphite paper wraps up core bar, then rolls strip in razor-thin volume；The graphite paper is commercial products, thickness 0.1mm.
Bracket selects angle steel to be made in the embodiment of the present invention.
Wirerope diameter is 6mm in the embodiment of the present invention, and is anti-rotational type.
In the embodiment of the present invention core bar structure as shown in figure 9, the thick section of core bar length L3For 170mm, core bar thin segment
Length L1For 90mm, the length L of core bar changeover portion2For 40mm, the length L of thread segment0For 10/20mm.
Core bar removing surface is cleaned using alcohol in the embodiment of the present invention.
The ingredient of the kirsite used in the embodiment of the present invention is by mass percentage for Zn 99.3%, Mg/0.272%, Mn
0.03%, Al < 0.01%.
The ingredient of the aluminium alloy used in the embodiment of the present invention is by mass percentage for Si 0.25%, Cu 0.015%, Mg
0.01%, Zn 0.07%, Mn 0.01%, Ti 0.01%, Fe 0.32%, V 0.03%, surplus Al.
The fine copper used in the embodiment of the present invention is T2 fine copper.
Stent drawing equipment is that annealing pipe tube reducing can be subtracted to wall in the embodiment of the present invention, is finally processed as producing close to target
One group of the product size drawing equipment for possessing the stent of different die throat diameters.
Sizing mill is will to carry out fixed diameter rolling close to the product of target size in the embodiment of the present invention, is obtained outside target size
The pass milling train of the final finished of shape.
Finishing is put in storage after being rolled on sizing mill in the embodiment of the present invention.
When there is processing hardening after tube reducing subtracts wall in the embodiment of the present invention, the annealing pipe after subtracting wall to tube reducing carries out secondary
Annealing, the parameter of double annealing and the annealing parameter of step 4 are identical, so that seamless pipe crystal grain is grown up again, prevent defect from occurring
With the problem of subsequent handling difficulty.
Integer calculations are pressed when calculating the number of plies in the embodiment of the present invention.
Seamless pipe product prepared by the present invention meets the requirement of the seamless pipe in respective country standard.
Embodiment 1
Process is as shown in Figure 1；
Using thickness H0The kirsite strip in razor-thin of=0.2mm；The core bar structure of use is as shown in figure 9, the wherein thick section of core bar
Diameter D1=7.35mm, the length L of the thick section of core bar3=170mm；Core bar thin segment diameter is the 4/5 of the thick section diameter of core bar；
Set pre-wound outer diameter D0=10.35mm need to roll strip in razor-thin number of plies t=10.35/0.4- according to formula (1)
7.35/0.4=7.5, be rounded is 8 layers；
According to formula (2), π × 8 length L=× 7.35+ π × (8+1) × 8 × 0.2=230mm of required strip in razor-thin；
According to formula (3), the width W of required strip in razor-thin0=170+50=220mm；
The calculation of equal value that strip in razor-thin size is calculated in melting process is as shown in Figure 8；
Size strip in razor-thin needed for being cut by above-mentioned size；Strip in razor-thin cleaning is degreased, being then polishing to surface is hair
Face, then clean removal surface debris；
Core bar removing surface is clean；
Rolling strip in razor-thin, to lick journey as shown in Figure 10；Core bar 8 first is wrapped up with graphite paper, middle layer 28 is constituted outside core bar 8；
Strip in razor-thin 29 is wound around on core bar 8 along its length and fixed by the setting number of plies, wherein strip in razor-thin 29 a side
With the end part aligning of the thick section of core bar；Then to strip in razor-thin 29 carry out compaction treatment, make core bar thin segment and core bar changeover portion with it is very thin
Band 29 fits together, then the outer surface of strip in razor-thin 29 is adhesively fixed with adhesive tape, and strip in razor-thin is made to form strip in razor-thin volume；
Prepare roller and pull out molding machine, the apparatus structure as shown in Fig. 2, top view as shown in figure 3, including molding roller group, solid
Fixed and adjustment device, chucking mechanism, Drawing Force bringing device and stage apparatus；Form roller group is made of three hole type rolls three
Roller forms roller group 10, and the gap that each hole type roll surrounds constitutes pass, and structure is as shown in figure 5, A-A is as shown in Figure 6 to cross-section structure；
Fixed to include three roller memorial archways 9 and card slot 11 with adjustment device, the bearing of each hole type roll of three-roll formation roller group 10 is assemblied in three rollers
On the bearing block of memorial archway 9, the two sides of three roller memorial archways 9 are fixed in card slot 11；
Stage apparatus includes operating platform 12, and the lower section of operating platform 12 is equipped with bracket 14, and the bottom of bracket 14 is equipped with pad
Block 15；
Card slot 11 is fixed on the side of the operating platform 12 of stage apparatus, the operating platform 12 of stage apparatus by bolt 13
The other side be fixed with Drawing Force bringing device；
Drawing Force bringing device is roll device, is assembled together by threephase asynchronous 18, speed reducer 2 and reel 1
Composition；Drawing Force bringing device is arranged in draw device fixing seat 16, and it is flat that device fixing seat 16 is bolted on operation
On platform 12；
Chucking mechanism is located between Drawing Force bringing device and molding roller group, by 7 groups of snap ring 6 and double thread hole connector
At snap ring 6 is integrally formed structure by ring part and screw portion, and connector 7 both ends in double thread hole are equipped with internal screw thread；It carries out
Draw compound tense, snap ring 6 are assembled together with Drawing Force bringing device, and the screw portion and double thread hole connector 7 of snap ring 6 are logical
Threaded connection is crossed, double thread hole connector 7 is connected through a screw thread with core bar 8, and starting Drawing Force bringing device drives chucking mechanism
It is mobile, and then it is compound to strip in razor-thin volume progress draw to drive core bar 8 mobile；
Guide roller 4 is equipped between reel 1 and chucking mechanism, guide roller 4 is fixed on operating platform 12 by guide roller 4,
Guide roller 4 is equipped with wirerope 3, and one end of wirerope 3 is fixed on reel 1, and the front end of the other end and sliding suspension hook 5 is fixed to be connected
It connects, reel 1 is assembled together by strong 17 with motor shaft, and the rear end of sliding suspension hook 5 is nested together with snap ring 6；It is multiple to carry out draw
It when conjunction, is rotated by reel 1 and pulls wirerope 3 mobile to 1 direction of reel, drive the strip in razor-thin volume 30 on core bar 8 mobile；
Operating platform 12 is equipped with several bolts hole, by the way that card slot 11 to be mounted on different bolts hole, adjusts card slot
11 position on stage apparatus；
Draw recombination process is as shown in figure 11, and the strip in razor-thin volume 30 that inside is enclosed with core bar 8 is passed through three-roll formation roller group
The intersection of 10 pass, core bar thin segment and core bar changeover portion is located inside pass, and the thread segment and chucking mechanism of core bar assemble
Together；It drives chucking mechanism to carry out drawing to core bar 8 by Drawing Force bringing device, makes the thick section of core bar by pass, drive
Strip in razor-thin rolls up 30 and passes through pass, and the rolled deformation completion draw between the thick section of core bar and forming roller 31 of strip in razor-thin volume 30 is compound,
Form seamless tube blank 32；
It is made annealing treatment after seamless tube blank is separated with core bar, cools to room temperature after annealing with the furnace, annealed
Pipe；
Tube reducing is carried out to annealing pipe using stent draw-off gear and subtracts wall, is then rolled on sizing mill, institute is made
Need the seamless pipe of size；
The heating temperature wherein made annealing treatment is 350 DEG C, soaking time 2 hours, cools to room temperature with the furnace；Strip in razor-thin rolls up quilt
Deflection 55% after drawing, according to the diameter of the deflection setting pass of strip in razor-thin volume before and after drawing.
Embodiment 2
With embodiment 1, difference is method:
(1) thickness H is used0The fine copper strip in razor-thin of=0.09mm；Set pre-wound outer diameter D0=12mm；The thick section of core bar it is straight
Diameter D1=8mm, core bar thin segment diameter are the 3/4 of the thick section diameter of core bar；Strip in razor-thin number of plies t=23 need to be rolled；Required strip in razor-thin
Length L=734mm；Graphite paper is not wrapped up when rolling strip in razor-thin volume；
(2) prepare roller and pull out forming device structure as shown in figure 4, the four-roller that wherein molding roller group is made of four hole type rolls
Roller group 25 is formed, the gap that each hole type roll surrounds constitutes pass, and structure is as shown in Figure 7；Fixed and adjustment device includes four-roller board
The bearing of mill 24 and card slot 11, each hole type roll of four-roller molding roller group 25 is assemblied on the bearing block of four-roller memorial archway 24, four-roller board
The two sides in mill 24 are fixed in card slot 11；
(3) the Drawing Force bringing device described in is hydraulic cylinder device, is assemblied in by cylinder body 19, drive end bearing bracket 20 and piston rod 21
It forms together；It is not provided with guide roller, the front end of piston rod 21 is equipped with pulley 22, and 3 one end of wirerope on pulley 22 is fixed to be connected
It connecing on snap ring 6, the other end is fixed in wirerope fixing seat 23 after wirerope 3 bypasses pulley 22, and wirerope fixing seat 23
In molding roller group side；Draw compound tense is carried out, it is mobile to 19 direction of cylinder body by the piston rod 21 of hydraulic cylinder device, it drives and slides
Wheel 22 and strip in razor-thin volume move through pass；
(4) heating temperature made annealing treatment is 650 DEG C, and the time, 5 hours, strip in razor-thin rolled up the deflection 60%. after being drawn
Embodiment 3
With embodiment 1, difference is method:
(1) strip in razor-thin material is aluminium alloy；Graphite paper is not wrapped up when rolling strip in razor-thin volume；
(2) deflection 50% after strip in razor-thin volume is drawn.
Claims (8)
1. a kind of roll up the compound method for preparing seamless pipe using multiple layer metal strip in razor-thin, it is characterised in that the following steps are included:
(1) prepare raw material: the thick section diameter of known core bar, very thin tape thickness and pre-wound outer diameter calculate the strip in razor-thin for rolling
The number of plies, width and length, according to calculated result cut out obtain corresponding size strip in razor-thin；Formula based on calculating is distinguished
Are as follows:
T=D0/2H0-D1/2H0, (1)
L=π t D1+π(t+1)tH0, (2)
With
W0=L3+50mm； (3)
In formula: t is that need to roll the strip in razor-thin number of plies；D0For pre-wound outer diameter, unit mm；D1For the thick section diameter of core bar, unit is
mm；H0For very thin tape thickness, unit mm；L is that need to cut very thin strip length, unit mm；W0For very thin bandwidth need to be cut,
Unit is mm；L3For the length of the thick section of core bar, unit mm；The core bar include the thick section of core bar, core bar thin segment and the two it
Between core bar changeover portion, and the end of core bar thin segment side be equipped with thread segment；Strip in razor-thin cleaning after cutting out degreases,
Then being polishing to surface is hair side, then cleans removal surface debris；The material selection kirsite of the strip in razor-thin, aluminium alloy or
Fine copper；Core bar removing surface is clean；
(2) it rolls strip in razor-thin volume: strip in razor-thin being wound around on core bar along its length and fixed by the setting number of plies, wherein pole
One side of strip and the end part aligning of the thick section of core bar；Then compaction treatment is carried out to strip in razor-thin, makes core bar thin segment and core bar
Changeover portion fits together with strip in razor-thin, then strip in razor-thin outer surface is adhesively fixed with adhesive tape, and strip in razor-thin is made to form strip in razor-thin volume；
(3) draw is compound: inside is enclosed with to pass of the strip in razor-thin volume across molding roller group of core bar, core bar thin segment and core bar mistake
The intersection for crossing section is located inside pass, and thread segment and the chucking mechanism of core bar are assembled together；Pass through Drawing Force bringing device
It drives chucking mechanism to carry out drawing to core bar, makes the thick section of core bar by pass, drive strip in razor-thin volume across pass, strip in razor-thin volume exists
It is compound that it is rolled deformation completion draw between the thick section of core bar and molding roller group, forms seamless tube blank；
(4) it makes annealing treatment: being made annealing treatment after seamless tube blank is separated with core bar, obtain annealing pipe；
(5) cold-drawn subtracts wall sizing: carrying out tube reducing to annealing pipe using stent draw-off gear and subtracts wall, then carries out on sizing mill
Rolling, is made the seamless pipe of required size.
2. according to claim 1 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
Be the strip in razor-thin with a thickness of 10~300 μm, the thick section diameter of core bar is 3~12mm, and core bar thin segment diameter is that core bar is thick
The 1/2~9/10 of section diameter.
3. according to claim 1 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
The number of plies for being the strip in razor-thin volume is 2~40 layers.
4. according to claim 1 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
It is when the material of strip in razor-thin is kirsite, step (4) annealing is to be first to heat to 300~380 DEG C, and heat preservation 0.1~2 is small
When, cool to room temperature with the furnace；When the material of strip in razor-thin is aluminium alloy, step (4) annealing is to be first to heat to 350~500
DEG C, 2~8 hours are kept the temperature, cools to room temperature with the furnace；When the material of strip in razor-thin is fine copper, step (4) annealing is first to heat
To 600~700 DEG C, 1~2 hour is kept the temperature, cools to room temperature with the furnace.
5. according to claim 1 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
It is in step (3), strip in razor-thin rolls up the deflection after being drawn 50~60%, according to the deflection of strip in razor-thin volume before and after drawing
Set the diameter of pass.
6. according to claim 1 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
Be in step (3), carry out the compound device used of draw pull out molding machine for roller, the device include molding roller group, fixation and
Adjust device, chucking mechanism, Drawing Force bringing device and stage apparatus；The molding roller group is made of multiple hole type rolls, respectively
The gap that hole type roll surrounds constitutes pass；Fixed and adjustment device includes memorial archway and card slot, forms the axis of each hole type roll of roller group
It installs on the bearing block for fitting over memorial archway, the two sides of memorial archway are fixed in card slot；Card slot is bolted on the one of stage apparatus
Side, the other side of stage apparatus are fixed with Drawing Force bringing device；The Drawing Force bringing device is roll device or hydraulic
Cylinder assembly；The roll device is assembled together by threephase asynchronous, speed reducer and reel and is formed；The hydraulic cylinder
Device is assembled together by cylinder body, drive end bearing bracket and piston rod and is formed；Chucking mechanism is located at Drawing Force bringing device and molding roller group
Between, the chucking mechanism is made of snap ring and double thread hole connector, and the snap ring is by ring part and screw portion
It is integrally formed structure, the double thread hole connector both ends are equipped with internal screw thread；Carry out draw compound tense, snap ring and Drawing Force
Bringing device is assembled together, and screw portion and the double thread hole connector of snap ring are connected through a screw thread, double thread hole connector
It is connected through a screw thread with core bar, starting Drawing Force bringing device drives chucking mechanism mobile, and then drives core bar mobile to very thin
It is compound that band volume carries out draw.
7. according to claim 6 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
It is to be equipped with guide roller between reel and chucking mechanism when Drawing Force bringing device is roll device, guide roller is equipped with steel
One end of cord, wirerope is assemblied on reel, and the other end is fixedly connected with the front end of sliding suspension hook, slide the rear end of suspension hook with
Snap ring is nested together；Draw compound tense is carried out, pulls wirerope mobile to reel direction by reel, strip in razor-thin volume is driven to move
It is dynamic.
8. according to claim 6 a kind of the compound method for preparing seamless pipe, feature are rolled up using multiple layer metal strip in razor-thin
It is that the front end of piston rod is equipped with pulley, one section of the wirerope on pulley when Drawing Force bringing device is hydraulic cylinder device
It is fixedly connected on snap ring, the other end is fixed in wirerope fixing seat after wirerope bypasses pulley；Draw compound tense is carried out, is led to
The piston rod for crossing hydraulic cylinder device is mobile to cylinder body direction, band movable pulley and strip in razor-thin volume movement.
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| CN105170652A (en) * | 2015-08-31 | 2015-12-23 | 东北大学 | Preparation method for multilayer dissimilar metal composite ultra-thin strip |
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| CN206104579U (en) * | 2016-08-30 | 2017-04-19 | 天津军星管业集团有限公司 | Mould aluminium stable state equipment forming die |
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|---|---|---|---|---|
| US4928507A (en) * | 1984-09-01 | 1990-05-29 | Kocks Technik Gmbh & Co. | Methods and apparatus for manufacturing seamless tube |
| JP2005282706A (en) * | 2004-03-29 | 2005-10-13 | Steel Kaspi Co Ltd | Method for manufacture of roller |
| CN2749594Y (en) * | 2004-11-29 | 2006-01-04 | 方大集团股份有限公司 | Glass tube drawing machine used for metal multiple-unit tube processing |
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| CN109127771B (en) | 2019-09-03 |
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