CN105414239A - Process for rolling inner-corrugated combined surface metal composite tube - Google Patents
Process for rolling inner-corrugated combined surface metal composite tube Download PDFInfo
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- CN105414239A CN105414239A CN201610050510.9A CN201610050510A CN105414239A CN 105414239 A CN105414239 A CN 105414239A CN 201610050510 A CN201610050510 A CN 201610050510A CN 105414239 A CN105414239 A CN 105414239A
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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
- B21C37/08—Making tubes with welded or soldered seams
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Abstract
The invention provides a process for rolling an inner-corrugated composite surface metal composite tube. The process for rolling the inner-corrugated composite surface metal composite tube comprises the steps: selecting a metal parent tube and a metal coated tube, and manufacturing a tube blank by combining the coated tube outside and the parent tube inside, wherein the deformation resistance of the coated tube is smaller than the deformation resistance of the parent tube; rolling the manufactured composite tube blank in a composite roughing mill, in which a spiral corrugated mandril is mounted, thereby obtaining a composite tubular billet, the inner surface and the composite surface of which have a spiral corrugated shape, wherein the spiral corrugated shape can be circular arc, ellipse, sine wave, triangle, trapezoid or rectangle, the corrugated height is (0.1-10) times of the thickness of the coated tube, and the width of the corrugated is (3-20) times of the height of the corrugated; putting the composite tubular billet in a composite finishing mill, in which a smooth circular hole is formed, to roll the corrugated shape of the inner surface to be level and round till the required tube wall thickness is obtained, thereby obtaining a composite tube. According to the process for rolling the inner-corrugated composite surface metal composite tube, by utilizing corrugated composite surfaces of the roughly rolled coated tube and parent tube, the difference of metal plastic deformation caused by dissimilar metal deformation resistance difference is solved, the composite strength and force of metal layers are increased, and the composite rate is improved.
Description
Technical field
The invention belongs to the preparing technical field of metal composite pipe, be specifically related to ripple faying face metal composite pipe technique in a kind of rolling.
Background technology
Composite bimetal pipe (hereinafter referred to as multiple tube) is also called bimetallic tube or cage walls, is to be made up of 2 kinds of different metal tubes.Combined closely by various distortion and interconnection technique between pipe, during by External Force Acting, inner and outer pipes is out of shape simultaneously and interface is not separated.General design criteria is that base material meets design stress, and cover material can anticorrosive or wearing and tearing etc.Compare with single metal tube, multiple tube makes full use of base tube and covers the optimum performance of pipe, not only has high strength, but also there is excellent corrosion-resistant, abrasion resistance properties, save a large amount of precious metal, reduce production cost, thus the application of composite bimetal pipe is very extensive.
Explosion composite method relies on the pressure of explosive charge generation needed for connection metal, makes two overlap joint surfaces realize Solid-phase welding.Concrete grammar is that the shock wave by explosive charge generation makes interior pipe generation plastic deformation, is close to outer tube first base tube with cover pipe and be assembled into composite pipe blank.
But the multiple tube size that the method is produced is less tubular poor, and lumber recovery is low; And due to high-octane impact of exploding, metallization structure is affected, and environmental pollution is heavier.
Metal forming method refers to that the effect that dissimilar metal is subject to deformation force in plastic history makes contact surface form a large amount of binding site close to atom thick distance, and then diffuses to form firm metallurgical binding.Its blank-making technology and Interface composites mechanism are the principal elements of restriction composite metal pipe quality, output.In press-working method, most study is Rolling compund, has hot rolling, cold rolling, non-isothermal rolling, asymmetrical rolling etc.And Rolling compund energy is lower, different metal materials mechanical property difference is large, and combination interface is more more complicated than Explosion composite.Roll extrusion composite algorithm, the easy to crack and easily work hardening of interior pipe; Spinning composite algorithm, technique is simple, and cost is low, and efficiency is high, but bond strength is low, and processing Large Diameter Pipeline is more difficult.So make dissimilar metal interface cohesion firm, Mass accuracy is high, and variety range is wide, and combined efficiency height is problem demanding prompt solution.
Summary of the invention
The object of the invention is, in order to solve the technical problem that when multiple tube is produced, compound interface binding ability is bad, to provide ripple faying face metal composite pipe technique in a kind of rolling.
The present invention is achieved through the following technical solutions.
1. a ripple faying face metal composite pipe technique in rolling, comprises the steps:
1) slab selection, chooses metal base tube and metal covers pipe, described in cover pipe metal level resistance of deformation be less than the resistance of deformation of base tube metal level, cleaning base tube and cover the surface that pipe carries out compound, until see metallic matrix;
2) base, will cover pipe and base tube closed assembly in order, cover pipe outside, and base tube is interior, and combination base, obtains composite pipe blank;
3) roughing, by composite pipe blank by Y type three roller or two roller compound roughing mills, described compound roughing mill is circular hole y-type rolling mill or circular hole duo mill, makes roll circular hole and covers pipe and contact; Make base tube inner surface and appearance with the core rod touch of helical corrugation, roll out compound hollow billet inner surface and composite surface with helical corrugation shape; The inner surface helical corrugation cross sectional shape of compound hollow billet is circular arc, ellipse, sinusoidal waveform, triangle, trapezoidal or rectangle, and helical corrugation height is (0.1 ~ 10) times of covering tube thickness, and waviness width is wave height (3 ~ 20) times;
4) finish rolling, by compound hollow billet by composite precision milling train, finishing mill is three-high mill or duo mill, and roll is with smooth circular hole; Change a kind of smooth surface plug, compound hollow billet inner surface ripple is offseted, and multiple tube rolls circle, and compound hollow billet is fixed, tube reducing, obtains required pipe thickness, finally obtain multiple tube;
5) finishing, multiple tube finish rolling shut out carries out crop and encloses, heat treatment, aligning, segmentation.
2, wherein, ripple faying face metal composite pipe technique in a kind of rolling, in step 2) in, described tubulation base process is: by the base tube of closed assembly and cover pipe be sent to forcing press compress, circumferentially submerged-arc welding welded encapsulation is carried out at the multiple tube two ends of closed assembly, vacuumize in the multiple tube blank end boring of having welded, then close this hole, obtain composite pipe blank.
3, wherein, in a kind of rolling, ripple faying face metal composite pipe technique, in step 3), for hot rolling, before roughing, is sent to heating furnace by composite pipe blank after the assay was approved, is heated to uniform temperature, and then carry out roughing.
4, wherein, ripple faying face metal composite pipe technique in a kind of rolling, in step 3), or for cold rolling, before roughing, is sent to pickler pickling by the composite plate pipe be up to the standards, and then carries out roughing.
Advantage of the present invention and good effect:
The adhesion that the present invention utilizes base tube helical corrugation and the adhesion covered between pipe helical corrugation to increase base tube and cover between pipe; After utilizing roughing, overall ripple covers pipe and overall corrugated base tube helical corrugation faying face, solves the difference that dissimilar metal resistance of deformation difference causes metal plastic deformation, the problem that namely plastic deformation is inconsistent; Utilize base tube and the helical corrugation composite surface covering pipe, increase base tube and the contact area covering pipe, add the bond strength of metal level, avoid base tube and the cracking phenomena covering pipe in the operation of rolling, improve recombination rate; Ripple faying face metal composite pipe technique in described a kind of rolling, technique is simple, and energy consumption is low, and composite quality, output are high.
Accompanying drawing explanation
Fig. 1 is composite pipe blank schematic diagram;
Fig. 2 is multiple tube roughing schematic diagram;
Fig. 3 is multiple tube finish rolling schematic diagram;
In figure: 1-base tube 2-covers pipe; 3-helical corrugation mandrel; 4-Y type roughing mill roll; 5-Y type milling train finishing roll.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Embodiment: prepare stainless steel and carbon steel multiple tube
Base: choose 304 stainless steel tubes and Q345R carbon steel pipe according to 1 ︰ 3 ratio assembly, carbon steel pipe is of a size of thick 15mm × diameter 250mm × long 2000mm, as covering pipe 1; Stainless steel tube is of a size of thick 5mm × diameter 248mm × long 2000mm, as base tube 2; Cleaning stainless steel inside pipe wall and carbon steel pipe outer wall, until see metallic substrates; Closed assembly covers pipe 1 and base tube 2, be sent to forcing press to compress, postwelding submerged-arc welding welded encapsulation is first put with the carbon steel that 10mm is thick around the composite pipe blank two ends of closed assembly, vacuumize in the multiple tube blank end boring of having welded, then this hole is closed, obtain composite pipe blank, as Fig. 1, the thickness of composite pipe blank is 20mm;
Heating: composite pipe blank is after the assay was approved sent to heating furnace, is heated to 1250 DEG C;
Roughing: the composite pipe blank heated is sent to the rolling of compound roughing mill, described compound roughing mill is three rolls is smooth circular hole profile y-type rolling mill, make the shaping roll 4 of smooth surface cover tube outer surface with carbon steel to contact, the helical corrugation outer surface of plug 3 contacts with stainless steel-based pipe internal surface, along rolling direction, stainless steel and carbon steel composite pipe blank is rolled into the compound hollow billet that stainless steel inside pipe wall is overall circular arc helical corrugation, described compound hollow billet is the roughing compound hollow billet that carbon steel pipe and stainless steel tube composite surface cooperatively interact with circular arc helical corrugation;
Finish rolling: as Fig. 3, be that the compound hollow billet of circular arc helical corrugation is sent to three roller finish rolling y-type rolling mill rollings by the inner surface after roughing, described finishing mill working roll is smooth surface roller, roughing compound hollow billet helical corrugation is arranged along rolling direction, rolling on finishing mill is until compound hollow billet inside spin ripple offsets, compound hollow billet rolls circle, compound hollow billet is fixed, tube reducing, is rolled down to required pipe thickness, obtains Complex steel and stainless steel pipe;
Finishing, multiple tube finish rolling shut out carries out crop end, heat treatment, and aligning, segmentation, makes finished product.
In the present embodiment, the helical corrugation cross sectional shape covering pipe that roughing is formed can be circular arc, ellipse, sinusoidal waveform, triangle, trapezoidal or rectangle, helical corrugation height is (0.1 ~ 10) times of covering tube thickness, and waviness width is wave height (3 ~ 20) times.
The adhesion that above-mentioned example utilizes base tube ripple and the adhesion covered between pipe helical corrugation to increase base tube and cover between pipe; After utilizing roughing one-piece auger corrugated base tube with cover pipe helical corrugation faying face, solve dissimilar metal resistance of deformation difference and cause the difference of metal plastic deformation; Its composite effect is good, the raising of essence that comparatively adopted the bond strength of plain tube Rolling compund to have of the bond strength at metal level interface.
Claims (4)
1. a ripple faying face metal composite pipe technique in rolling, comprises the steps:
1) slab selection, chooses metal base tube and metal covers pipe, described in cover pipe metal level resistance of deformation be less than the resistance of deformation of base tube metal level, cleaning base tube and cover the surface that pipe carries out compound, until see metallic matrix;
2) base, will cover pipe and base tube closed assembly in order, cover pipe outside, and base tube is interior, and combination base, obtains composite pipe blank;
3) roughing, by composite pipe blank by Y type three roller or two roller compound roughing mills, described compound roughing mill is circular hole y-type rolling mill or circular hole duo mill, makes roll circular hole and covers pipe and contact; Base tube inner surface is contacted with the mandrel of appearance with helical corrugation, rolls out compound hollow billet inner surface and composite surface with helical corrugation shape; The inner surface helical corrugation cross sectional shape of compound hollow billet is circular arc, ellipse, sinusoidal waveform, triangle, trapezoidal or rectangle, and wave height is (0.1 ~ 10) times of covering tube thickness, and waviness width is wave height (3 ~ 20) times;
4) finish rolling, by compound hollow billet by composite precision milling train, finishing mill is three-high mill or duo mill, and roll is with smooth circular hole; Change a kind of smooth surface plug, compound hollow billet inner surface ripple is offseted, and multiple tube rolls circle, and compound hollow billet is fixed, tube reducing, obtains required pipe thickness, finally obtain multiple tube;
5) finishing, multiple tube finish rolling shut out carries out crop and encloses, heat treatment, aligning, segmentation.
2. ripple faying face metal composite pipe technique in a kind of rolling according to claim 1, it is characterized in that, step 2) in, described tubulation base process is: by the base tube of closed assembly and cover pipe be sent to forcing press compress, circumferentially submerged-arc welding welded encapsulation is carried out at the multiple tube two ends of closed assembly, vacuumize in the multiple tube blank end boring of having welded, then close this hole, obtain composite pipe blank.
3. ripple faying face metal composite pipe technique in a kind of rolling according to claim 1, is characterized in that, in step 3), for hot rolling, before roughing, composite pipe blank is after the assay was approved sent to heating furnace, be heated to uniform temperature, and then carry out roughing.
4. ripple faying face metal composite pipe technique in a kind of rolling according to claim 1, is characterized in that, in step 3), or for cold rolling, before roughing, the composite plate pipe be up to the standards is sent to pickler pickling, and then carries out roughing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610050510.9A CN105414239B (en) | 2016-01-26 | 2016-01-26 | Ripple faying face metal composite pipe technique in one kind rolling |
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| CN201610050510.9A CN105414239B (en) | 2016-01-26 | 2016-01-26 | Ripple faying face metal composite pipe technique in one kind rolling |
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| CN105414239A true CN105414239A (en) | 2016-03-23 |
| CN105414239B CN105414239B (en) | 2018-01-16 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439789A (en) * | 2020-10-30 | 2021-03-05 | 太原理工大学 | Forming method of easy-to-demould core rod and metal composite pipe |
| CN112496076A (en) * | 2020-10-30 | 2021-03-16 | 太原理工大学 | Rolling method of inner corrugated metal composite pipe |
| CN112496077A (en) * | 2020-10-30 | 2021-03-16 | 太原理工大学 | Metal composite pipe continuous rolling forming method for transverse and longitudinal crossed inner corrugated joint surface |
| CN112718867A (en) * | 2020-12-09 | 2021-04-30 | 太原理工大学 | Three-roller skew rolling forming method for metal composite pipe with corrugated joint surface |
| CN115592056A (en) * | 2022-12-15 | 2023-01-13 | 太原理工大学（Cn） | Large-thickness-ratio interlayer shell ring rolling compounding method based on local high-temperature strong pressure |
| CN115608900A (en) * | 2022-12-16 | 2023-01-17 | 太原理工大学 | Metal clad material wave-flat radial forging composite equipment and method thereof |
| CN117324416A (en) * | 2023-10-19 | 2024-01-02 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439789A (en) * | 2020-10-30 | 2021-03-05 | 太原理工大学 | Forming method of easy-to-demould core rod and metal composite pipe |
| CN112496076A (en) * | 2020-10-30 | 2021-03-16 | 太原理工大学 | Rolling method of inner corrugated metal composite pipe |
| CN112496077A (en) * | 2020-10-30 | 2021-03-16 | 太原理工大学 | Metal composite pipe continuous rolling forming method for transverse and longitudinal crossed inner corrugated joint surface |
| CN112718867A (en) * | 2020-12-09 | 2021-04-30 | 太原理工大学 | Three-roller skew rolling forming method for metal composite pipe with corrugated joint surface |
| CN112718867B (en) * | 2020-12-09 | 2022-08-26 | 太原理工大学 | Three-roller skew rolling forming method for metal composite pipe with corrugated joint surface |
| CN115592056A (en) * | 2022-12-15 | 2023-01-13 | 太原理工大学（Cn） | Large-thickness-ratio interlayer shell ring rolling compounding method based on local high-temperature strong pressure |
| CN115592056B (en) * | 2022-12-15 | 2023-04-07 | 太原理工大学 | Large-thickness-ratio interlayer shell ring rolling compounding method based on local high-temperature strong pressure |
| CN115608900A (en) * | 2022-12-16 | 2023-01-17 | 太原理工大学 | Metal clad material wave-flat radial forging composite equipment and method thereof |
| CN117324416A (en) * | 2023-10-19 | 2024-01-02 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
| CN117324416B (en) * | 2023-10-19 | 2024-06-11 | 深圳市鑫冠亚科技有限公司 | Preparation method of dissimilar metal composite plate strip |
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